Bryant 580J 08 14D Users Manual 580Jp1 32

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580J*08--14D,F (2--COMPRESSOR)

NOMINAL 7.5 to 12.5 TONS

WITH PURONR(R--410A) REFRIGERANT

Service and Maintenance Instructions

TABLE OF CONTENTS

SAFETY CONSIDERATIONS 1....................

UNIT ARRANGEMENT AND ACCESS 2...........

SUPPLY FAN (BLOWER) SECTION 4..............

COOLING 6....................................

PURONR(R--410A) REFRIGERANT 8..............

COOLING CHARGING CHARTS 10................

CONVENIENCE OUTLETS 16....................

SMOKE DETECTORS 17.........................

PROTECTIVE DEVICES 24.......................

GAS HEATING SYSTEM 25......................

CONDENSER COIL SERVICE 35..................

RTU--MP CONTROL SYSTEM 35..................

ECONOMI$ER SYSTEMS 50......................

WIRING DIAGRAMS 59.........................

PRE--START--UP 62..............................

START--UP, GENERAL 62........................

START--UP, RTU--MP CONTROL 64................

OPERATING SEQUENCES 67.....................

FASTENER TORQUE VALUES 71.................

APPENDIX I. MODEL NUMBER SIGNIFICANCE 72.

APPENDIX II. PHYSICAL DATA 73................

APPENDIX III. FAN PERFORMANCE 75...........

APPENDIX IV. WIRING DIAGRAM LIST 82........

APPENDIX V. MOTORMASTER SENSOR

LOCATIONS 83.................................

UNIT START-UP CHECKLIST 85..................

SAFETY CONSIDERATIONS

Installation and servicing of air-conditioning equipment

can be hazardous due to system pressure and electrical

components. Only trained and qualified service personnel

should install, repair, or service air-conditioning

equipment. Untrained personnel can perform the basic

maintenance functions of replacing filters. Trained service

personnel should perform all other operations.

When working on air-conditioning equipment, observe

precautions in the literature, tags and labels attached to

the unit, and other safety precautions that may apply.

Follow all safety codes. Wear safety glasses and work

gloves. Use quenching cloth for unbrazing operations.

Have fire extinguishers available for all brazing

operations.

Follow all safety codes. Wear safety glasses and work

gloves. Use quenching cloth for brazing operations. Have

fire extinguisher available. Read these instructions

thoroughly and follow all warnings or cautions attached to

the unit. Consult local building codes and National

Electrical Code (NEC) for special requirements.

Recognize safety information. This is the safety--alert

symbol . When you see this symbol on the unit and in

instructions or manuals, be alert to the potential for

personal injury.

Understand the signal words DANGER, WARNING, and

CAUTION. These words are used with the safety--alert

symbol. DANGER identifies the most serious hazards

which will result in severe personal injury or death.

WARNING signifies a hazard which could result in

personal injury or death. CAUTION is used to identify

unsafe practices which may result in minor personal

injury or product and property damage. NOTE is used to

highlight suggestions which will result in enhanced

installation, reliability, or operation.

2

FIRE, EXPLOSION HAZARD

Failure to follow this warning could result in

personal injury, death and/or property damage.

Refer to the User’s Information Manual provided

with this unit for more details.

Do not store or use gasoline or other flammable

vapors and liquids in the vicinity of this or any other

appliance.

What to do if you smell gas:

DO NOT try to light any appliance.

DO NOT touch any electrical switch, or use any

phone in your building.

IMMEDIATELY call your gas supplier from a

neighbor’s phone. Follow the gas supplier’s

instructions.

If you cannot reach your gas supplier, call the fire

department.

!WARNING

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal

injury or death.

Before performing service or maintenance operations

on unit, turn off main power switch to unit. Electrical

shock and rotating equipment could cause injury.

!WARNING

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal

injury or death.

Units with convenience outlet circuits may use

multiple disconnects. Check convenience outlet for

power status before opening unit for service. Locate

its disconnect switch, if appropriate, and open it.

Tag--out this switch, if necessary.

!WARNING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause personal

injury, death and/or equipment damage.

PuronR(R--410A) refrigerant systems operate at

higher pressures than standard R--22 systems. Do not

use R--22 service equipment or components on Puron

refrigerant equipment.

!WARNING

FIRE, EXPLOSION HAZARD

Failure to follow this warning could result in personal

injury or death.

Disconnect gas piping from unit when pressure testing

at pressure greater than 0.5 psig. Pressures greater

than 0.5 psig will cause gas valve damage resulting in

hazardous condition. If gas valve is subjected to

pressure greater than 0.5 psig, it must be replaced

before use. When pressure testing field-supplied gas

piping at pressures of 0.5 psig or less, a unit connected

to such piping must be isolated by closing the manual

gas valve(s).

!WARNING

CUT HAZARD

Failure to follow this caution may result in personal

injury.

Sheet metal parts may have sharp edges or burrs. Use

care and wear appropriate protective clothing, safety

glasses and gloves when handling parts and servicing

air conditioning units.

CAUTION

!

UNIT ARRANGEMENT AND ACCESS

General

Fig. 1 and Fig. 2 show general unit arrangement and

access locations.

FILTER ACCESS PANEL

INDOOR COIL ACCESS PANEL

C06023

Fig. 1 -- Typical Access Panel Locations (Back)

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BLOWER

ACCESS

PANEL

CONTROL BOX

COMPRESSORS

C09239

Fig. 2 -- Typical Access Panel Location (Front)

Routine Maintenance

These items should be part of a routine maintenance

program, to be checked every month or two, until a

specific schedule for each can be identified for this

installation:

Quarterly Inspection (and 30 days after initial start)

SReturn air filter replacement

SOutdoor hood inlet filters cleaned

SBelt tension checked

SBelt condition checked

SPulley alignment checked

SFan shaft bearing locking collar tightness checked

SCondenser coil cleanliness checked

SCondensate drain checked

Seasonal Maintenance

These items should be checked at the beginning of each

season (or more often if local conditions and usage

patterns dictate):

Air Conditioning

SCondenser fan motor mounting bolts tightness

SCompressor mounting bolts

SCondenser fan blade positioning

SControl box cleanliness and wiring condition

SWire terminal tightness

SRefrigerant charge level

SEvaporator coil cleaning

SEvaporator blower motor amperage

Heating

SHeat exchanger flue passageways cleanliness

SGas burner condition

SGas manifold pressure

SHeating temperature rise

Economizer or Outside Air Damper

SInlet filters condition

SCheck damper travel (economizer)

SCheck gear and dampers for debris and dirt

Air Filters and Screens

Each unit is equipped with return air filters. If the unit has

an economizer, it will also have an outside air screen. If a

manual outside air damper is added, an inlet air screen

will also be present.

Each of these filters and screens will need to be

periodically replaced or cleaned.

Return Air Filters

Return air filters are disposable fiberglass media type.

Access to the filters is through the small lift--out panel

located on the rear side of the unit, above the

evaporator/return air access panel. (See Fig. 1.)

To remove the filters:

1. Grasp the bottom flange of the upper panel.

2. Lift up and swing the bottom out until the panel dis-

engages and pulls out.

3. Reach inside and extract the filters from the filter

rack.

4. Replace these filters as required with similar replace-

ment filters of same size.

To re--install the access panel:

1. Slide the top of the panel up under the unit top panel.

2. Slide the bottom into the side channels.

3. Push the bottom flange down until it contacts the top

of the lower panel (or economizer top).

IMPORTANT: DO NOT OPERATE THE UNIT

WITHOUT THESE FILTERS!

Outside Air Hood

Outside air hood inlet screens are permanent

aluminum--mesh type filters. Check these for cleanliness.

Remove the screens when cleaning is required. Clean by

washing with hot low--pressure water and soft detergent

and replace all screens before restarting the unit. Observe

the flow direction arrows on the side of each filter frame.

Economizer Inlet Air Screen

This air screen is retained by spring clips under the top

edge of the hood. (See Fig. 3.)

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22 3/8 (569 mm)

HOOD

DIVIDER

OUTSIDE

AIR

CLEANABLE

ALUMINUM

FILTER

BAROMETRIC

RELIEF FILTER

CAP

FILTER

C08634

Fig. 3 -- Filter Installation

To remove the filter, open the spring clips. Re--install the

filter by placing the frame in its track, then closing the

spring clips.

Manual Outside Air Hood Screen

This inlet screen is secured by a retainer angle across the

top edge of the hood. (See Fig. 4.)

C07156

Fig. 4 -- Screens Installed on Outdoor--Air Hood

(Sizes 7-1/2 to 12-1/2 Tons Shown)

To remove the screen, loosen the screws in the top retainer

and slip the retainer up until the filter can be removed.

Re-install by placing the frame in its track, rotating the

retainer back down and tighten all screws.

SUPPLY FAN (BLOWER) SECTION

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could cause personal

injury or death.

Before performing service or maintenance operations

on the fan system, shut off all unit power and tag--out

the unit disconnect switch. Do not reach into the fan

section with power still applied to unit.

!WARNING

Supply Fan (Belt--Drive)

The supply fan system consists of a forward--curved

centrifugal blower wheel on a solid shaft with two

concentric type bearings, one on each side of the blower

housing. A fixed--pitch driven pulley is attached to the fan

shaft and an adjustable--pitch driver pulley is on the

motor. The pulleys are connected using a “V” type belt.

(See Fig. 5.)

C07087

Fig. 5 -- Belt Drive Motor Mounting

Belt

Check the belt condition and tension quarterly. Inspect the

belt for signs of cracking, fraying or glazing along the

inside surfaces. Check belt tension by using a spring-force

tool (such as Browning’s Part Number “Belt Tension

Checker” or equivalent tool). Tension should be 6-lbs at a

5/8-in. (16 mm) deflection when measured at the

centerline of the belt span. This point is at the center of

the belt when measuring the distance between the motor

shaft and the blower shaft.

NOTE: Without the spring--tension tool, place a straight

edge across the belt surface at the pulleys, then deflect the

belt at mid--span using one finger to a 1/2-in. (13 mm)

deflection.

Adjust belt tension by loosening the motor mounting plate

front bolts and rear bolt and sliding the plate toward the

fan (to reduce tension) or away from fan (to increase

tension). Ensure the blower shaft and the motor shaft are

parallel to each other (pulleys aligned). Tighten all bolts

when finished.

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To replace the belt:

1. Use a belt with same section type or similar size. Do

not substitute a “FHP” type belt. When installing the

new belt, do not use a tool (screwdriver or pry--bar) to

force the belt over the pulley flanges, this will stress

the belt and cause a reduction in belt life.

2. Loosen the motor mounting plate front bolts and rear

bolts.

3. Push the motor and its mounting plate towards the

blower housing as close as possible to reduce the cen-

ter distance between fan shaft and motor shaft.

4. Remove the belt by gently lifting the old belt over

one of the pulleys.

5. Install the new belt by gently sliding the belt over

both pulleys and then sliding the motor and plate

away from the fan housing until proper tension is

achieved.

6. Check the alignment of the pulleys, adjust if neces-

sary.

7. Tighten all bolts.

8. Check the tension after a few hours of runtime and

re--adjust as required.

Adjustable--Pitch Pulley on Motor

The motor pulley is an adjustable--pitch type that allows a

servicer to implement changes in the fan wheel speed to

match as--installed ductwork systems. The pulley consists

of a fixed flange side that faces the motor (secured to the

motor shaft) and a movable flange side that can be rotated

around the fixed flange side that increases or reduces the

pitch diameter of this driver pulley. (See Fig. 6.)

As the pitch diameter is changed by adjusting the position

of the movable flange, the centerline on this pulley shifts

laterally (along the motor shaft). This creates a

requirement for a realignment of the pulleys after any

adjustment of the movable flange. Also reset the belt

tension after each realignment.

Check the condition of the motor pulley for signs of wear.

Glazing of the belt contact surfaces and erosion on these

surfaces are signs of improper belt tension and/or belt

slippage. Pulley replacement may be necessary.

To change fan speed:

1. Shut off unit power supply.

2. Loosen belt by loosening fan motor mounting nuts.

(See Fig. 5.)

3. Loosen movable pulley flange setscrew. (See Fig. 6.)

4. Screw movable flange toward fixed flange to increase

speed and away from fixed flange to decrease speed.

Increasing fan speed increases load on motor. Do not

exceed maximum speed specified.

5. Set movable flange at nearest keyway of pulley hub

and tighten setscrew to torque specifications.

To align fan and motor pulleys:

1. Loosen fan pulley setscrews.

2. Slide fan pulley along fan shaft. Make angular align-

ment by loosening motor from mounting.

3. Tighten fan pulley setscrews and motor mounting

bolts to torque specifications.

4. Recheck belt tension.

C07075

Fig. 6 -- Supply--Fan Pulley Adjustment

Bearings

This fan system uses bearings featuring concentric split

locking collars. The collars are tightened through a cap

screw bridging the split portion of the collar. The cap

screw has a Torx T25 socket head. To tighten the locking

collar: Hold the locking collar tightly against the inner

race of the bearing and torque the cap screw to 65--70

in-lb (7.4--7.9 Nm). (See Fig. 7.)

C08121

Fig. 7 -- Tightening Locking Collar

Motor

When replacing the motor, also replace the external--tooth

lock washer (star washer) under the motor mounting base;

this is part of the motor grounding system. Ensure the

teeth on the lock washer are in contact with the motor’s

painted base. Tighten motor mounting bolts to 120 +/-- 12

in--lbs. (13.5 +/-- 1.3 Nm).

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Changing the Fan Wheel Speed by Changing Pulleys

The horsepower rating of the belt is primarily dictated by

the pitch diameter of the smaller pulley in the drive

system (typically the motor pulley in these units). Do not

install a replacement motor pulley with a smaller pitch

diameter than provided on the original factory pulley.

Change fan wheel speed by changing the fan pulley

(larger pitch diameter to reduce wheel speed, smaller

pitch diameter to increase wheel speed) or select a new

system (both pulleys and matching belt(s).)

Before changing pulleys to increase fan wheel speed,

check the fan performance at the target speed and airflow

rate to determine new motor loading (bhp). Use the fan

performance tables or use the Packaged Rooftop Builder

software program. Confirm that the motor in this unit is

capable of operating at the new operating condition. Fan

shaft loading increases dramatically as wheel speed is

increased.

To reduce vibration, replace the motor’s adjustable pitch

pulley with a fixed pitch pulley (after the final airflow

balance adjustment). This will reduce the amount of

vibration generated by the motor/belt--drive system.

COOLING

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause personal

injury, death and/or equipment damage.

This system uses PuronRrefrigerant which has higher

pressures than R--22 and other refrigerants. No other

refrigerant may be used in this system. Gauge set,

hoses, and recovery system must be designed to

handle Puron refrigerant. If unsure about equipment,

consult the equipment manufacturer.

!WARNING

Condenser Coil

The condenser coil is new NOVATION Heat Exchanger

Technology. This is an all--aluminum construction with

louvered fins over single--depth crosstubes. The

crosstubes have multiple small passages through which

the refrigerant passes from header to header on each end.

Tubes and fins are both aluminum construction.

Connection tube joints are copper. The coil may be

one--row or two--row. Two--row coils are spaced apart to

assist in cleaning. (See Fig. 8.)

TUBES

FINS

MANIFOLD

MICROCHANNELS

C07273

Fig. 8 -- NOVATION Heat Exchanger Coils

Evaporator Coil

The evaporator coil is traditional round--tube, plate--fin

technology. Tube and fin construction is of various

optional materials and coatings (see Model Number

Format). Coils are multiple--row.

Coil Maintenance and Cleaning Recommendation

Routine cleaning of coil surfaces is essential to maintain

proper operation of the unit. Elimination of contamination

and removal of harmful residues will greatly increase the

life of the coil and extend the life of the unit. The

following maintenance and cleaning procedures are

recommended as part of the routine maintenance activities

to extend the life of the coil.

Remove Surface Loaded Fibers

Surface loaded fibers or dirt should be removed with a

vacuum cleaner. If a vacuum cleaner is not available, a

soft non--metallic bristle brush may be used. In either

case, the tool should be applied in the direction of the fins.

Coil surfaces can be easily damaged (fin edges can be

easily bent over and damage to the coating of a protected

coil) if the tool is applied across the fins.

NOTE: Use of a water stream, such as a garden hose,

against a surface loaded coil will drive the fibers and dirt

into the coil. This will make cleaning efforts more

difficult. Surface loaded fibers must be completely

removed prior to using low velocity clean water rinse.

Periodic Clean Water Rinse

A periodic clean water rinse is very beneficial for coils

that are applied in coastal or industrial environments.

However, it is very important that the water rinse is made

with very low velocity water stream to avoid damaging

the fin edges. Monthly cleaning as described below is

recommended.

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Routine Cleaning of NOVATION Condenser Coil

Surfaces

To clean the NOVATION condenser coil, chemicals are

NOT to be used; only water is approved as the cleaning

solution. Only clean potable water is authorized for

cleaning NOVATION condensers. Carefully remove any

foreign objects or debris attached to the coil face or

trapped within the mounting frame and brackets. Using a

high pressure water sprayer, purge any soap or industrial

cleaners from hose and/or dilution tank prior to wetting

the coil.

Clean condenser face by spraying the coil core steadily

and uniformly from top to bottom, directing the spray

straight into or toward the coil face. Do not exceed 900

psig or a 45 degree angle; nozzle must be at least 12 in.

(30 cm) from the coil face. Reduce pressure and use

caution to prevent damage to air centers (fins). Do not

fracture the braze between air centers and refrigerant

tubes. Allow water to drain from the coil core and check

for refrigerant leaks prior to start--up.

NOTE: Please see the NOVATION Condenser Service

section for specific information on the coil.

PERSONAL INJURY HAZARD

Failure to follow this caution may result in personal

injury or equipment damage.

Chemical cleaning should NOT be used on the

aluminum NOVATION condenser. Damage to the coil

may occur. Only approved cleaning is recommended.

CAUTION

!

Routine Cleaning of Evaporator Coil Surfaces

Monthly cleaning with Totaline®environmentally sound

coil cleaner is essential to extend the life of coils. This

cleaner is available from Bryant Replacement parts

division as part number P902--0301 for one gallon

container, and part number P902--0305 for a 5 gallon

container. It is recommended that all round tube coil

cleaner as described below. Coil cleaning should be part

of the unit’s regularly scheduled maintenance procedures

to ensure long life of the coil. Failure to clean the coils

may result in reduced durability in the environment.

Avoid the use of

Scoil brighteners

Sacid cleaning prior to painting

Shigh pressure washers

Spoor quality water for cleaning

Totaline environmentally sound coil cleaner is

non--flammable, hypoallergenic, non--bacterial, and a

USDA accepted biodegradable agent that will not harm

coil or surrounding components such as electrical wiring,

painted metal surfaces, or insulation. Use of

non--recommended coil cleaners is strongly discouraged

since coil and unit durability could be affected.

Totaline Environmentally Sound Coil Cleaner Application

Equipment

S2-1/2 gallon garden sprayer

Swater rinse with low velocity spray nozzle

PERSONAL INJURY HAZARD

Failure to follow this caution may result in corrosion

and damage to the unit.

Harsh chemicals, household bleach or acid or basic

cleaners should not be used to clean outdoor or indoor

coils of any kind. These cleaners can be very difficult

to rinse out of the coil and can accelerate corrosion at

the fin/tube interface where dissimilar materials are in

contact. If there is dirt below the surface of the coil,

use the Totaline environmentally sound coil cleaner as

described above.

CAUTION

!

PERSONAL INJURY HAZARD

Failure to follow this caution may result in reduced

unit performance.

High velocity water from a pressure washer, garden

hose, or compressed air should never be used to clean

a coil. The force of the water or air jet will bend the

fin edges and increase airside pressure drop.

CAUTION

!

Totaline Environmentally Sound Coil Cleaner application

Instructions

1. Proper eye protection such as safety glasses is recom-

mended during mixing and application.

2. Remove all surface loaded fibers and dirt with a vacu-

um cleaner as described above.

3. Thoroughly wet finned surfaces with clean water and

a low velocity garden hose, being careful not to bend

fins.

4. Mix Totaline environmentally sound coil cleaner in a

2 1/2 gallon garden spryer according to the instruc-

tions included with the cleaner. The optimum solution

temperature is 100°F(38°C).

NOTE: Do NOT USE water in excess of 130°F(54°C),

as the enzymatic activity will be destroyed.

5. Thoroughly apply Totaline®environmentally sound

coil cleaner solution to all coil surfaces including

finned area, tube sheets and coil headers.

6. Hold garden sprayer nozzle close to finned areas and

apply cleaner with a vertical, up--and--down motion.

Avoid spraying in horizontal pattern to minimize po-

tential for fin damage.

7. Ensure cleaner thoroughly penetrates deep into finned

areas.

8. Interior and exterior finned areas must be thoroughly

cleaned.

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9. Finned surfaces should remain wet with cleaning

solution for 10 minutes.

10. Ensure surfaces are not allowed to dry before rinsing.

Reapply cleaner as needed to ensure 10--minute satur-

ation is achieved.

11. Thoroughly rinse all surfaces with low velocity clean

water using downward rinsing motion of water spray

nozzle. Protect fins from damage from the spray

nozzle.

Evaporator Coil Metering Devices

The metering devices are multiple fixed--bore devices

(Acutrolt) swaged into the horizontal outlet tubes from

the liquid header, located at the entrance to each

evaporator coil circuit path. These are non--adjustable.

Service requires replacing the entire liquid header

assembly.

To check for possible blockage of one or more of these

metering devices, disconnect the supply fan contactor

(IFC) coil, then start the compressor and observe the

frosting pattern on the face of the evaporator coil. A frost

pattern should develop uniformly across the face of the

coil starting at each horizontal liquid tube. Failure to

develop frost at an outlet tube can indicate a plugged or a

missing orifice.

Refrigerant System Pressure Access Ports

There are two access ports in each compressor--circuit

system -- on the suction tube near the compressor and on

the discharge tube near the compressor. These are brass

fittings with black plastic caps. The hose connection

fittings are standard 1/4 SAE male flare couplings.

The brass fittings are two--piece High Flow valves, with a

receptacle base brazed to the tubing and an integral

spring-closed check valve core screwed into the base. (See

Fig. 9.) This check valve is permanently assembled into

the core body and cannot be serviced separately. Replace

the entire core body if necessary. Service tools are

available from RCD that allow the replacement of the

check valve core without having to recover the entire

system refrigerant charge. Apply compressor refrigerant

oil to the check valve core’s bottom O-ring. Install the

fitting body with 96 +/-- 10 in-lbs (Nm) of torque; do not

overtighten.

PURONR(R--410A) REFRIGERANT

This unit is designed for use with Puron (R--410A)

refrigerant. Do not use any other refrigerant in this

system.

Puron (R--410A) refrigerant is provided in pink (rose)

colored cylinders. These cylinders are available with and

without dip tubes; cylinders with dip tubes will have a

label indicating this feature. For a cylinder with a dip

tube, place the cylinder in the upright position (access

valve at the top) when removing liquid refrigerant for

charging. For a cylinder without a dip tube, invert the

cylinder (access valve on the bottom) when removing

liquid refrigerant.

Because Puron (R--410A) refrigerant is a blend, it is

strongly recommended that refrigerant always be removed

from the cylinder as a liquid. Admit liquid refrigerant into

the system in the discharge line. If adding refrigerant into

the suction line, use a commercial metering/expansion

device at the gauge manifold; remove liquid from the

cylinder, pass it through the metering device at the gauge

set and then pass it into the suction line as a vapor. Do not

remove Puron (R--410A) refrigerant from the cylinder as a

vapor.

Refrigerant Charge

Amount of refrigerant charge is listed on the unit’s

nameplate. Refer to GTAC2--5 Charging, Recovery,

Recycling and Reclamation training manual and the

following procedures.

Unit panels must be in place when unit is operating during

the charging procedure. To prepare the unit for charge

adjustment.

No Charge

Use standard evacuating techniques. After evacuating

system, weigh in the specified amount of refrigerant.

Low--Charge Cooling

Using Cooling Charging Charts (Fig. 10, 11, 12, and 13),

vary refrigerant until the conditions of the appropriate

chart are met. Note the charging charts are different from

the type normally used. Charts are based on charging the

units to the correct superheat for the various operating

conditions. Accurate pressure gauge and temperature

sensing device are required. Connect the pressure gauge to

the service port on the suction line. Mount the temperature

sensing device on the suction line and insulate it so that

outdoor ambient temperature does not affect the reading.

Indoor--air cfm must be within the normal operating range

of the unit.

To Use Cooling Charging Charts

Select the appropriate unit charging chart from Fig. 10,

11, 12, and 13.

SSizes 08D,F and 12D,F each have one cooling charging

chart

SSize 14D,F has two cooling charging charts: Circuit A

and Circuit B

Take the outdoor ambient temperature and read the

suction pressure gauge. Refer to chart to determine what

suction temperature should be. If suction temperature is

high, add refrigerant. If suction temperature is low,

carefully recover some of the charge. Recheck the suction

pressure as charge is adjusted.

For 14D,F size, perform this procedure once for Circuit A

(using the Circuit A chart) and once for Circuit B (using

the Circuit B chart).

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1/2-20 UNF RH

30

0.596

.47

5/8” HEX

SEAT CORE

WASHER DEPRESSOR PER ARI 720

+.01/-.035

FROM FACE OF BODY

7/16-20 UNF RH

O-RING

45

torqued into the seat. Appropriate handling is

required to not scratch or dent the surface.

1/2" HEX

This surface provides a metal to metal seal when

o

o

(Part No. EC39EZ067)

C08453

Fig. 9 -- CoreMax Access Port Assembly

EXAMPLE:

Model 580J*14D

Circuit 1:

Outdoor Temperature 85_F(29_C)..................

Suction Pressure 125 psig (860 kPa).................

Suction Temperature should be 58_F(14_C)..........

Circuit 2:

Outdoor Temperature 85_F(29_C)..................

Suction Pressure 120 psig (830 kPa).................

Suction Temperature should be 60_F(16_C)..........

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COOLING CHARGING CHARTS

C09221

Fig. 10 -- Cooling Charging Charts (08D,F -- Both Circuits)

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COOLING CHARGING CHARTS

C09222

Fig. 11 -- Cooling Charging Charts (12D,F -- Both Circuits)

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COOLING CHARGING CHARTS

12.5 TON CIRCUIT 1

C09240

Fig. 12 -- Cooling Charging Charts (14D,F -- Circuit 1)

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COOLING CHARGING CHARTS

12.5 TON CIRCUIT 2

C09241

Fig. 13 -- Cooling Charging Charts (14D,F -- Circuit 2)

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Table 1 – Cooling Service Analysis

PROBLEM CAUSE REMEDY

Compressor and Condenser

Fan Will Not Start.

Power failure. Call power company.

Fuse blown or circuit breaker tripped. Replace fuse or reset circuit breaker.

Defective thermostat, contactor, transformer,

or control relay. Replace component.

Insufficient line voltage. Determine cause and correct.

Incorrect or faulty wiring. Check wiring diagram and rewire correctly.

Thermostat setting too high. Lower thermostat setting below room temperature.

Compressor Will Not Start But

Condenser Fan Runs.

Faulty wiring or loose connections in

compressor circuit. Check wiring and repair or replace.

Compressor motor burned out, seized, or

internal overload open. Determine cause. Replace compressor.

Defective run/start capacitor, overload, start

relay. Determine cause and replace.

Onelegofthree---phasepowerdead. Replace fuse or reset circuit breaker. Determine

cause.

Compressor Cycles (other

than normally satisfying

thermostat).

Refrigerant overcharge or undercharge. Recover refrigerant, evacuate system, and recharge

to nameplate.

Defective compressor. Replace and determine cause.

Insufficient line voltage. Determine cause and correct.

Blocked condenser. Determine cause and correct.

Defective run/start capacitor, overload, or start

relay. Determine cause and replace.

Defective thermostat. Replace thermostat.

Faulty condenser---fan motor or capacitor. Replace.

Restriction in refrigerant system. Locate restriction and remove.

Compressor Operates

Continuously.

Dirty air filter. Replace filter.

Unit undersized for load. Decrease load or increase unit size.

Thermostat set too low. Reset thermostat.

Low refrigerant charge. Locate leak; repair and recharge.

Leaking valves in compressor. Replace compressor.

Air in system. Recover refrigerant, evacuate system, and recharge.

Condenser coil dirty or restricted. Clean coil or remove restriction.

Excessive Head Pressure.

Dirty air filter. Replace filter.

Dirty condenser coil. Clean coil.

Refrigerant overcharged. Recover excess refrigerant.

Air in system. Recover refrigerant, evacuate system, and recharge.

Condenser air restricted or air short---cycling. Determine cause and correct.

Head Pressure Too Low.

Low refrigerant charge. Check for leaks; repair and recharge.

Compressor valves leaking. Replace compressor.

Restrictioninliquidtube. Remove restriction.

Excessive Suction Pressure.

High head load. Check for source and eliminate.

Compressor valves leaking. Replace compressor.

Refrigerant overcharged. Recover excess refrigerant.

Suction Pressure Too Low.

Dirty air filter. Replace filter.

Low refrigerant charge. Check for leaks; repair and recharge.

Metering device or low side restricted. Remove source of restriction.

Insufficient evaporator airflow. Increase air quantity. Check filter and replace if

necessary.

Temperature too low in conditioned area. Reset thermostat.

Outdoor ambient below 25° F. Install low---ambient kit.

Evaporator Fan Will Not Shut

Off. Time off delay not finished. W a i t f o r 3 0 --- s e c o n d o f f d e l a y.

Compressor Makes Excessive

Noise. Compressor rotating in wrong direction. Reversethe3---phasepowerleads.

580J

15

Compressors

Lubrication

Compressors are charged with the correct amount of oil at

the factory.

UNIT DAMAGE HAZARD

Failure to follow this caution may result in damage to

components.

The compressor is in a PuronRrefrigerant system and

uses a polyolester (POE) oil. This oil is extremely

hygroscopic, meaning it absorbs water readily. POE

oils can absorb 15 times as much water as other oils

designed for HCFC and CFC refrigerants. Avoid

exposure of the oil to the atmosphere.

CAUTION

!

PERSONAL INJURY AND ENVIRONMENTAL

HAZARD

Failure to follow this warning could result in personal

injury or death.

Relieve pressure and recover all refrigerant before

system repair or final unit disposal.

Wear safety glasses and gloves when handling

refrigerants.

Keep torches and other ignition sources away from

refrigerants and oils.

!WARNING

Replacing Compressor

The compressor used with Puron refrigerant contains a

POE oil. This oil has a high affinity for moisture. Do not

remove the compressor’s tube plugs until ready to insert

the unit suction and discharge tube ends.

Compressor mounting bolt torque is 65--75 in-lbs

(7.3--8.5 N-m).

Compressor Rotation

1. Connect service gauges to suction and discharge pres-

sure fittings.

2. Energize the compressor.

3. The suction pressure should drop and the discharge

pressure should rise, as is normal on any start--up.

NOTE: If the suction pressure does not drop and the

discharge pressure does not rise to normal levels:

1. Note that the evaporator fan is probably also rotating

in the wrong direction.

2. Turn off power to the unit.

3. Reverse any two of the unit power leads.

4. Reapply power to the compressor.

The suction and discharge pressure levels should now

move to their normal start--up levels.

NOTE: When the compressor is rotating in the wrong

direction, the unit makes an elevated level of noise and

does not provide cooling.

Filter Drier

Replace whenever refrigerant system is exposed to

atmosphere. Only use factory specified liquid--line filter

driers with working pressures no less than 650 psig. Do

not install a suction--line filter drier in liquid line. A

liquid--line filter drier designed for use with Puron

refrigerant is required on every unit.

Condenser--Fan Adjustment (08D--12D,F size)

1. Shut off unit power supply. Install lockout tag.

2. Remove condenser-fan assembly (grille, motor, and

fan).

3. Loosen fan hub setscrews.

4. Adjust fan height as shown in Fig. 14.

5. Tighten setscrews to 84 in-lbs (9.5 N-m).

6. Replace condenser-fan assembly.

CONDUIT

0.14 in +0.0/-0.03

C08448

Fig. 14 -- Condenser Fan Adjustment (08D--12D,F)

Condenser--Fan Adjustment (14D,F size)

1. Shut off unit power supply. Install lockout tag.

2. Remove condenser fan grille.

3. Loosen fan hub setscrews.

4. Adjust fan height as shown in Fig. 15.

5. Tighten setscrews to 84 in-lbs (9.5 N-m).

6. Replace fan grille.

C09094

Fig. 15 -- Condenser Fan Adjustment (14D,F)

Troubleshooting Cooling System

Refer to Table 1 for additional troubleshooting topics.

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16

CONVENIENCE OUTLETS

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal

injury or death.

Units with convenience outlet circuits may use

multiple disconnects. Check convenience outlet for

power status before opening unit for service. Locate

its disconnect switch, if appropriate, and open it.

Tag--out this switch, if necessary.

!WARNING

Two types of convenience outlets are offered on 580J

models: Non--powered and unit--powered. Both types

provide a 125-volt GFCI (ground--fault circuit--interrupter)

duplex receptacle rated at 15-A behind a hinged

waterproof access cover, located on the end panel of the

unit. (See Fig. 16.)

Pwd-CO Transformer

Conv Outlet

GFCI

Pwd-CO

Fuse

Switch

C08128

Fig. 16 -- Convenience Outlet Location

Installing Weatherproof Cover

A weatherproof while--in--use cover for the

factory--installed convenience outlets is now required by

UL standards. This cover cannot be factory--mounted due

to its depth. It must be installed at unit installation. For

shipment, the convenience outlet is covered with a blank

cover plate.

The weatherproof cover kit is shipped in the unit’s control

box. The kit includes the hinged cover, a backing plate

and gasket.

IMPORTANT: Disconnect all power to unit and

convenience outlet.

1. Remove the blank cover plate at the convenience out-

let; discard the blank cover.

2. Loosen the two screws at the GFCI duplex outlet, un-

til approximately 1/2--in (13 mm) under screw heads

are exposed.

3. Press the gasket over the screw heads. Slip the back-

ing plate over the screw heads at the keyhole slots

and align with the gasket. Tighten the two screws un-

til snug (do not over--tighten).

4. Mount the weatherproof cover to the backing plate as

shown in Fig. 17.

COVER - WHILE-IN-USE

WEATHERPROOF

BASE PLATE FOR

GFCI RECEPTACLE

C09244

Fig. 17 -- Weatherproof Cover Installation

5. Remove two slot fillers in the bottom of the cover to

permit service tool cords to exit the cover. Check for

full closing and latching.

Non--Powered Type

This type requires the field installation of a

general--purpose 125--volt 15--A circuit powered from a

source elsewhere in the building. Observe national and

local codes when selecting wire size, fuse or breaker

requirements and disconnect switch size and location.

Route 125--v power supply conductors into the bottom of

the utility box containing the duplex receptacle.

Unit--Powered Type

A unit--mounted transformer is factory--installed to

stepdown the main power supply voltage to the unit to

115--v at the duplex receptacle. This option also includes a

manual switch with fuse, located in a utility box and

mounted on a bracket behind the convenience outlet;

access is through the unit’s control box access panel. (See

Fig. 16.)

The primary leads to the convenience outlet transformer

are not factory--connected. Selection of primary power

source is a customer--option. If local codes permit, the

transformer primary leads can be connected at the

line--side terminals on a unit--mounted non--fused

disconnect or circuit--breaker switch; this will provide

service power to the unit when the unit disconnect switch

or circuit--breaker is open. Other connection methods will

result in the convenience outlet circuit being de--energized

when the unit disconnect or circuit--breaker is open. (See

Fig. 18.)

580J

17

C08283

UNIT

VOLTAGE

CONNECT

AS

PRIMARY

CONNECTIONS

TRANSFORMER

TERMINALS

208,

230 240 L1: RED +YEL

L2: BLU + GRA

H1 + H3

H2 + H4

460 480

L1: RED

Splice BLU + YEL

L2: GRA

H1

H2 + H3

H4

575 600 L1: RED

L2: GRA

H1

H2

Fig. 18 -- Powered Convenience Outlet Wiring

Duty Cycle

The unit--powered convenience outlet has a duty cycle

limitation. The transformer is intended to provide power

on an intermittent basis for service tools, lamps, etc; it is

not intended to provide 15--amps loading for continuous

duty loads (such as electric heaters for overnight use).

Observe a 50% limit on circuit loading above 8--amps

(i.e., limit loads exceeding 8--amps to 30 minutes of

operation every hour).

Maintenance

Periodically test the GFCI receptacle by pressing the

TEST button on the face of the receptacle. This should

cause the internal circuit of the receptacle to trip and open

the receptacle. Check for proper grounding wires and

power line phasing if the GFCI receptacle does not trip as

required. Press the RESET button to clear the tripped

condition.

Fuse On Powered Type

The factory fuse is a Bussman “Fusetron” T--15,

non--renewable screw--in (Edison base) type plug fuse.

Using Unit--Mounted Convenience Outlets

Units with unit--mounted convenience outlet circuits will

often require that two disconnects be opened to

de--energize all power to the unit. Treat all units as

electrically energized until the convenience outlet power

is also checked and de--energization is confirmed. Observe

National Electrical Code Article 210, Branch Circuits, for

use of convenience outlets.

SMOKE DETECTORS

Smoke detectors are available as factory--installed options

on 580J models. Smoke detectors may be specified for

Supply Air only or for Return Air without or with

economizer or in combination of Supply Air and Return

Air. Return Air smoke detectors are arranged for vertical

return configurations only. All components necessary for

operation are factory--provided and mounted. The unit is

factory--configured for immediate smoke detector

shutdown operation; additional wiring or modifications to

unit terminal board may be necessary to complete the unit

and smoke detector configuration to meet project

requirements.

System

The smoke detector system consists of a four--wire

controller and one or two sensors. Its primary function is

to shut down the rooftop unit in order to prevent smoke

from circulating throughout the building. It is not to be

used as a life saving device.

Controller

The controller includes a controller housing, a printed

circuit board, and a clear plastic cover. (See Fig. 19.) The

controller can be connected to one or two compatible duct

smoke sensors. The clear plastic cover is secured to the

housing with a single captive screw for easy access to the

wiring terminals. The controller has three LEDs (for

Power, Trouble and Alarm) and a manual test/reset button

(on the cover face).

580J

18

Duct smoke sensor

controller

Fastener

(2X)

Controller cover

Conduit nuts

(supplied by installer)

Conduit support plate

Cover gasket

(ordering option)

Conduit couplings

(supplied by installer)

Terminal block cover

Controller housing

and electronics

Alarm Power

Tes t/ re se t

switch

Trouble

C08208

Fig. 19 -- Controller Assembly

Sensor

The sensor includes a plastic housing, a printed circuit

board, a clear plastic cover, a sampling tube inlet and an

exhaust tube. (See Fig. 20.) The sampling tube (when

used) and exhaust tube are attached during installation.

The sampling tube varies in length depending on the size

of the rooftop unit. The clear plastic cover permits visual

inspections without having to disassemble the sensor. The

cover attaches to the sensor housing using four captive

screws and forms an airtight chamber around the sensing

electronics. Each sensor includes a harness with an RJ45

terminal for connecting to the controller. Each sensor has

four LEDs (Power, Trouble, Alarm and Dirty) and a

manual test/reset button (on the left--side of the housing).

Air is introduced to the duct smoke detector sensor’s

sensing chamber through a sampling tube that extends into

the HVAC duct and is directed back into the ventilation

system through a (shorter) exhaust tube. The difference in

air pressure between the two tubes pulls the sampled air

through the sensing chamber. When a sufficient amount of

smoke is detected in the sensing chamber, the sensor

signals an alarm state and the controller automatically

takes the appropriate action to shut down fans and

blowers, change over air handling systems, notify the fire

alarm control panel, etc.

The sensor uses a process called differential sensing to

prevent gradual environmental changes from triggering

false alarms. A rapid change in environmental conditions,

such as smoke from a fire, causes the sensor to signal an

alarm state but dust and debris accumulated over time

does not.

Duct smoke sensor

See

Detail A

Exhaust tube

Plug

Sampling tube

(ordered separately)

Intake

gasket Cover gasket

(ordering option)

TSD-CO2

(ordering option)

Sensor housing

and electronics

Exhaust gasket

Coupling

Sensor cover

Detail A

Magnetic

test/reset

switch

Alarm

Trouble

Power

Dirty

C08209

Fig. 20 -- Smoke Detector Sensor

For installations using two sensors, the duct smoke

detector does not differentiate which sensor signals an

alarm or trouble condition.

Smoke Detector Locations

Supply Air

The Supply Air smoke detector sensor is located to the

left of the unit’s indoor (supply) fan. (See Fig. 21.) Access

is through the fan access panel. There is no sampling tube

used at this location. The sampling tube inlet extends

through the side plate of the fan housing (into a high

pressure area). The controller is located on a bracket to

the right of the return filter, accessed through the lift--off

filter panel.

Smoke Detector Sensor

C08245

Fig. 21 -- Typical Supply Air Smoke Detector

Sensor Location

580J

19

Return Air Without Economizer

The sampling tube is located across the return air opening

on the unit basepan. (See Fig. 22.) The holes in the

sampling tube face downward, into the return air stream.

The sampling tube is connected via tubing to the return air

sensor that is mounted on a bracket high on the partition

between return filter and controller location. (This sensor

is shipped in a flat--mounting location. Installation

requires that this sensor be relocated to its operating

location and the tubing to the sampling tube be connected.

See installation steps.)

Return Air Detector Sampling Tube

Controller module

Return Air Detector module

(shipping position shown)*

*RA detector must be moved from shipping position to operating position by installer

C07307

Fig. 22 -- Typical Return Air Detector Location

Return Air With Economizer

The sampling tube is inserted through the side plates of

the economizer housing, placing it across the return air

opening on the unit basepan. (See Fig. 23.) The holes in

the sampling tube face downward, into the return air

stream. The sampling tube is connected via tubing to the

return air sensor that is mounted on a bracket high on the

partition between return filter and controller location.

(This sensor is shipped in a flat--mounting location.

Installation requires that this sensor be relocated to its

operating location and the tubing to the sampling tube be

connected. See installation steps.)

Return Air

Sampling Tube

C08129

Fig. 23 -- Return Air Sampling Tube Location

Completing Installation of Return Air Smoke

Sensor

1. Unscrew the two screws holding the Return Air

Sensor detector plate. (See Fig. 24.) Save the screws.

2. Remove the Return Air Sensor and its detector plate.

3. Rotate the detector plate so the sensor is facing out-

wards and the sampling tube connection is on the bot-

tom. (See Fig. 25.)

SCREWS

EXHAUST

TUBE

FLEXIBLE

EXTENSION

TUBE

SAMPLING

C08126

Fig. 24 -- Return Air Detector Shipping Position

4. Screw the sensor and detector plate into its operating

position using screws from Step 1. Make sure the

sampling tube connection is on the bottom and the ex-

haust tube is on the top. (See Fig. 24.)

5. Connect the flexible tube on the sampling inlet to the

sampling tube on the basepan.

6. For units with an economizer, the sampling tube is in-

tegrated into the economizer housing but the connec-

tion of the flexible tubing to the sampling tube is the

same.

C08127

Fig. 25 -- Return Air Sensor Operating Position

FIOP Smoke Detector Wiring and Response

All Units

FIOP smoke detector is configured to automatically shut

down all unit operations when smoke condition is

detected. See Fig. 26, Smoke Detector Wiring.

Highlight A

JMP 3 is factory--cut, transferring unit control to smoke

detector.

580J

20

A

E

F

C

D

B

C08246

Fig. 26 -- Typical Smoke Detector System Wiring

Highlight B

Smoke detector NC contact set will open on smoke alarm

condition, de--energizing the ORN conductor.

Highlight C

24--v power signal via ORN lead is removed at Smoke

Detector input on LCTB; all unit operations cease

immediately.

RTU--MP Controls

Unit operating functions (fan, cooling and heating) are

terminated as described above. In addition:

Highlight D

On smoke alarm condition, the smoke detector NO Alarm

contact will close, supplying 24--v power to GRA

conductor.

Highlight E

GRA lead at Smoke Alarm input on LCTB provides 24--v

signal to FIOP DDC control.

RTU--MP

The 24--v signal is conveyed to RTU--MP’s J1--10 input

terminal. This signal initiates the FSD sequence by the

RTU--MP control. FSD status is reported to connected

BAS network.

Using Remote Logic

Five conductors are provided for field use (see Highlight

F) for additional annunciation functions.

Additional Application Data — Refer to Catalog No.

HKRNKA--1XA for discussions on additional control

features of these smoke detectors including multiple unit

coordination. (See Fig. 26.)

Sensor and Controller Tests

Sensor Alarm Test

The sensor alarm test checks a sensor’s ability to signal an

alarm state. This test requires that you use a field provided

SD--MAG test magnet.

OPERATIONAL TEST HAZARD

Failure to follow this caution may result in personnel

and authority concern.

This test places the duct detector into the alarm state.

Unless part of the test, disconnect all auxiliary

equipment from the controller before performing the

test. If the duct detector is connected to a fire alarm

system, notify the proper authorities before

performing the test.

CAUTION

!

Sensor Alarm Test Procedure

1. Hold the test magnet where indicated on the side of

the sensor housing for seven seconds.

2. Verify that the sensor’s Alarm LED turns on.

3. Reset the sensor by holding the test magnet against

the sensor housing for two seconds.

4. Verify that the sensor’s Alarm LED turns off.

580J

21

Controller Alarm Test

The controller alarm test checks the controller’s ability to

initiate and indicate an alarm state.

OPERATIONAL TEST HAZARD

Failure to follow this caution may result in personnel

and authority concern.

This test places the duct detector into the alarm state.

Disconnect all auxiliary equipment from the controller

before performing the test. If the duct detector is

connected to a fire alarm system, notify the proper

authorities before performing the test.

CAUTION

!

Controller Alarm Test Procedure

1. Press the controller’s test/reset switch for seven

seconds.

2. Verify that the controller’s Alarm LED turns on.

3. Reset the sensor by pressing the test/reset switch for

two seconds.

4. Verify that the controller’s Alarm LED turns off.

Dirty Controller Test

The dirty controller test checks the controller’s ability to

initiate a dirty sensor test and indicate its results.

OPERATIONAL TEST HAZARD

Failure to follow this caution may result in personnel

and authority concern.

Pressing the controller’s test/reset switch for longer

than seven seconds will put the duct detector into the

alarm state and activate all automatic alarm responses.

CAUTION

!

Dirty Controller Test Procedure

SPress the controller’s test/reset switch for two seconds.

SVerify that the controller’s Trouble LED flashes.

Dirty Sensor Test

The dirty sensor test provides an indication of the sensor’s

ability to compensate for gradual environmental changes.

A sensor that can no longer compensate for environmental

changes is considered 100% dirty and requires cleaning or

replacing. You must use a field provided SD--MAG test

magnet to initiate a sensor dirty test. The sensor’s Dirty

LED indicates the results of the dirty test as shown in

Table 2.

OPERATIONAL TEST HAZARD

Failure to follow this caution may result in personnel

and authority concern.

Holding the test magnet against the sensor housing for

more than seven seconds will put the duct detector

into the alarm state and activate all automatic alarm

responses.

CAUTION

!

Tabl e 2 – Dirty LED Test

FLASHES DESCRIPTION

10--- 25% dirty. (Typical of a newly installed detector)

225--- 50% dirty

351--- 75% dirty

476--- 99% dirty

Dirty Sensor Test Procedure

1. Hold the test magnet where indicated on the side of

the sensor housing for two seconds.

2. Verify that the sensor’s Dirty LED flashes.

OPERATIONAL TEST HAZARD

Failure to follow this caution may result in personnel

and authority concern.

Changing the dirty sensor test operation will put the

detector into the alarm state and activate all automatic

alarm responses. Before changing dirty sensor test

operation, disconnect all auxiliary equipment from the

controller and notify the proper authorities if

connected to a fire alarm system.

CAUTION

!

Changing the Dirty Sensor Test

By default, sensor dirty test results are indicated by:

SThe sensor’s Dirty LED flashing.

SThe controller’s Trouble LED flashing.

SThe controller’s supervision relay contacts toggle.

The operation of a sensor’s dirty test can be changed so

that the controller’s supervision relay is not used to

indicate test results. When two detectors are connected to

a controller, sensor dirty test operation on both sensors

must be configured to operate in the same manner.

To Configure the Dirty Sensor Test Operation

1. Hold the test magnet where indicated on the side of

the sensor housing until the sensor’s Alarm LED turns

on and its Dirty LED flashes twice (approximately 60

seconds).

2. Reset the sensor by removing the test magnet then

holding it against the sensor housing again until the

sensor’s Alarm LED turns off (approximately 2

seconds).

Remote Station Test

The remote station alarm test checks a test/reset station’s

ability to initiate and indicate an alarm state.

OPERATIONAL TEST HAZARD

Failure to follow this caution may result in personnel

and authority concern.

This test places the duct detector into the alarm state.

Unless part of the test, disconnect all auxiliary

equipment from the controller before performing the

test. If the duct detector is connected to a fire alarm

system, notify the proper authorities before

performing the test.

CAUTION

!

580J

22

SD--TRK4 Remote Alarm Test Procedure

1. Turn the key switch to the RESET/TEST position for

seven seconds.

2. Verify that the test/reset station’s Alarm LED turns

on.

3. Reset the sensor by turning the key switch to the

RESET/TEST position for two seconds.

4. Verify that the test/reset station’s Alarm LED turns

off.

Remote Test/Reset Station Dirty Sensor Test

The test/reset station dirty sensor test checks the test/reset

station’s ability to initiate a sensor dirty test and indicate

the results. It must be wired to the controller as shown in

Fig. 27 and configured to operate the controller’s

supervision relay. For more information, see “Changing

the Dirty Sensor Test.”

1

12

14

13

19

15

2

20

3

Reset/Test

Trouble

Power

Alarm

Supervision relay

contacts [3]

5

4

1

3

2

SD-TRK4

2

1

TB3

18 Vdc ( )

+

18 Vdc ( )

−

Auxiliary

equipment

+

−

Wire must be

added by installer

Smoke Detector Controller

C08247

Fig. 27 -- Remote Test/Reset Station Connections

OPERATIONAL TEST HAZARD

Failure to follow this caution may result in personnel

and authority concern.

If the test/reset station’s key switch is left in the

RESET/TEST position for longer than seven seconds,

the detector will automatically go into the alarm state

and activate all automatic alarm responses.

CAUTION

!

OPERATIONAL TEST HAZARD

Failure to follow this caution may result in personnel

and authority concern.

Holding the test magnet to the target area for longer

than seven seconds will put the detector into the alarm

state and activate all automatic alarm responses.

CAUTION

!

Dirty Sensor Test Using an SD--TRK4

1. Turn the key switch to the RESET/TEST position for

two seconds.

2. Verify that the test/reset station’s Trouble LED

flashes.

Detector Cleaning

Cleaning the Smoke Detector

Clean the duct smoke sensor when the Dirty LED is

flashing continuously or sooner if conditions warrant.

OPERATIONAL TEST HAZARD

Failure to follow this caution may result in personnel

and authority concern.

If the smoke detector is connected to a fire alarm

system, first notify the proper authorities that the

detector is undergoing maintenance then disable the

relevant circuit to avoid generating a false alarm.

CAUTION

!

1. Disconnect power from the duct detector then remove

the sensor’s cover. (See Fig. 28.)

Airow

HVAC duct

Sampling

tube

Retainer

clip

Optic

plate

Optic

housing

Sensor

housing

C07305

Fig. 28 -- Sensor Cleaning Diagram

2. Using a vacuum cleaner, clean compressed air, or a

soft bristle brush, remove loose dirt and debris from

inside the sensor housing and cover.

Use isopropyl alcohol and a lint--free cloth to remove

dirt and other contaminants from the gasket on the

sensor’s cover.

3. Squeeze the retainer clips on both sides of the optic

housing then lift the housing away from the printed

circuit board.

4. Gently remove dirt and debris from around the optic

plate and inside the optic housing.

5. Replace the optic housing and sensor cover.

6. Connect power to the duct detector then perform a

sensor alarm test.

580J

23

INDICATORS

Normal State

The smoke detector operates in the normal state in the

absence of any trouble conditions and when its sensing

chamber is free of smoke. In the normal state, the Power

LED on both the sensor and the controller are on and all

other LEDs are off.

Alarm State

The smoke detector enters the alarm state when the

amount of smoke particulate in the sensor’s sensing

chamber exceeds the alarm threshold value. (See Table 3.)

Upon entering the alarm state:

SThe sensor’s Alarm LED and the controller’s Alarm LED

turn on.

SThe contacts on the controller’s two auxiliary relays

switch positions.

SThe contacts on the controller’s alarm initiation relay

close.

SThe controller’s remote alarm LED output is activated

(turned on).

SThe controller’s high impedance multiple fan shutdown

control line is pulled to ground Trouble state.

The SuperDuct duct smoke detector enters the trouble

state under the following conditions:

SA sensor’s cover is removed and 20 minutes pass before

it is properly secured.

SA sensor’s environmental compensation limit is reached

(100% dirty).

SA wiring fault between a sensor and the controller is

detected.

An internal sensor fault is detected upon entering the

trouble state:

SThe contacts on the controller’s supervisory relay switch

positions. (See Fig. 29.)

SIf a sensor trouble, the sensor’s Trouble LED the

controller’s Trouble LED turn on.

SIf 100% dirty, the sensor’s Dirty LED turns on and the

controller’s Trouble LED flashes continuously.

SIf a wiring fault between a sensor and the controller, the

controller’s Trouble LED turns on but not the sensor’s.

Alarm Power

Test/reset

switch

Trouble

C07298

Fig. 29 -- Controller Assembly

NOTE: All troubles are latched by the duct smoke

detector. The trouble condition must be cleared and then

the duct smoke detector must be reset in order to restore it

to the normal state.

Resetting Alarm and Trouble Condition Trips

Manual reset is required to restore smoke detector systems

to Normal operation. For installations using two sensors,

the duct smoke detector does not differentiate which

sensor signals an alarm or trouble condition. Check each

sensor for Alarm or Trouble status (indicated by LED).

Clear the condition that has generated the trip at this

sensor. Then reset the sensor by pressing and holding the

reset button (on the side) for 2 seconds. Verify that the

sensor’s Alarm and Trouble LEDs are now off. At the

controller, clear its Alarm or Trouble state by pressing and

holding the manual reset button (on the front cover) for 2

seconds. Verify that the controller’s Alarm and Trouble

LEDs are now off. Replace all panels.

Troubleshooting

Controller’s Trouble LED is On

1. Check the Trouble LED on each sensor connected to

the controller. If a sensor’s Trouble LED is on, de-

termine the cause and make the necessary repairs.

2. Check the wiring between the sensor and the control-

ler. If wiring is loose or missing, repair or replace as

required.

Controller’s Trouble LED is Flashing

1. One or both of the sensors is 100% dirty.

2. Determine which Dirty LED is flashing then clean

that sensor assembly as described in the detector

cleaning section.

Sensor’s Trouble LED is On

1. Check the sensor’s Dirty LED. If it is flashing, the

sensor is dirty and must be cleaned.

2. Check the sensor’s cover. If it is loose or missing, se-

cure the cover to the sensor housing.

3. Replace sensor assembly.

Sensor’s Power LED is Off

1. Check the controller’s Power LED. If it is off, de-

termine why the controller does not have power and

make the necessary repairs.

2. Check the wiring between the sensor and the control-

ler. If wiring is loose or missing, repair or replace as

required.

580J

24

Table 3 – Detector Indicators

CONTROL OR INDICATOR DESCRIPTION

Magnetic test/reset switch Resets the sensor when it is in the alarm or trouble state. Activates or tests the sensor when it is in

the normal state.

Alarm LED Indicates the sensor is in the alarm state.

Trouble LED Indicates the sensor is in the trouble state.

Dirty LED Indicates the amount of environmental compensation used by the sensor

(flashing continuously = 100%)

Power LED Indicates the sensor is energized.

Controller’s Power LED is Off

1. Make sure the circuit supplying power to the control-

ler is operational. If not, make sure JP2 and JP3 are

set correctly on the controller before applying power.

2. Verify that power is applied to the controller’s supply

input terminals. If power is not present, replace or re-

pair wiring as required.

Remote Test/Reset Station’s Trouble LED Does Not

Flash When Performing a Dirty Test, but the

Controller’s Trouble LED Does

1. Verify that the remote test/station is wired as shown

in Fig. 27. Repair or replace loose or missing wiring.

2. Configure the sensor dirty test to activate the control-

ler’s supervision relay. See “Changing Sensor Dirty

Test Operation.”

Sensor’s Trouble LED is On, But the Controller’s

Trouble LED is OFF

Remove JP1 on the controller.

PROTECTIVE DEVICES

Compressor Protection

Overcurrent

Each compressor has internal linebreak motor protection.

Reset is automatic after compressor motor has cooled.

Overtemperature

Each compressor has an internal protector to protect it

against excessively high discharge gas temperatures. Reset

is automatic.

High Pressure Switch

Each system is provided with a high pressure switch

mounted on the discharge line. The switch is

stem--mounted and brazed into the discharge tube. Trip

setting is 630 psig +/-- 10 psig (4344 +/-- 69 kPa) when

hot. Reset is automatic at 505 psig (3482 kPa).

Low Pressure Switch

Each system is protected against a loss of charge and low

evaporator coil loading condition by a low pressure switch

located on the suction line near the compressor. The

switch is stem--mounted. Trip setting is 54 psig +/-- 5 psig

(372 +/-- 34 kPa). Reset is automatic at 117 +/-- 5 psig

(807 +/-- 34 kPa).

Supply (Indoor) Fan Motor Protection

Disconnect and lockout power when servicing fan motor.

The supply fan motor is equipped with an overcurrent

protection device. The type of device depends on the

motor size. (See Table 4.)

Table 4 – Supply Fan Motor Protection Devices

Motor Size

(bhp) Overload Device Reset

1.7 Internal Linebreak Automatic

2.4 Internal Linebreak Automatic

2.9 Thermik Automatic

3.7 Thermik Automatic

5.2 External

(Circuit Breaker) Manual

The Internal Linebreak type is an imbedded switch that

senses both motor current and internal motor temperature.

When this switch reaches its trip setpoint, the switch

opens the power supply to the motor and the motor stops.

Reset is automatic when the motor windings cool down.

The Thermik device is a snap--action overtemperature

protection device that is imbedded in the motor windings.

It is a pilot--circuit device that is wired into the unit’s 24--v

control circuit. When this switch reaches its trip setpoint,

it opens the 24--v control circuit and causes all unit

operation to cease. This device resets automatically when

the motor windings cool. Do not bypass this switch to

correct trouble. Determine the cause and correct it.

The External motor overload device is a

specially--calibrated circuit breaker that is UL recognized

as a motor overload controller. It is an overcurrent

device. When the motor current exceeds the circuit

breaker setpoint, the device opens all motor power leads

and the motor shuts down. Reset requires a manual reset

at the overload switch. This device (designated IFCB) is

located on the side of the supply fan housing, behind the

fan access panel.

580J

25

Troubleshooting Supply Fan Motor Overload Trips

The supply fan used in 580J units is a forward--curved

centrifugal wheel. At a constant wheel speed, this wheel

has a characteristic that causes the fan shaft load to

DECREASE when the static pressure in the unit--duct

system increases and to INCREASE when the static

pressure in the unit--duct system decreases (and fan

airflow rate increases). Motor overload conditions

typically develop when the unit is operated with an access

panel removed, with unfinished duct work, in an

economizer--open mode, or a leak develops in the duct

system that allows a bypass back to unit return opening.

Condenser Fan Motor Protection

The condenser fan motor is internally protected against

overtemperature.

Control Circuit, 24--V

The control circuit is protected against overcurrent

conditions by a circuit breaker mounted on control

transformer TRAN. Reset is manual.

GAS HEATING SYSTEM

General

The heat exchanger system consists of a gas valve feeding

multiple inshot burners off a manifold. The burners fire

into matching primary tubes. The primary tubes discharge

into combustion plenum where gas flow converges into

secondary tubes. The secondary tubes exit into the

induced draft fan wheel inlet. The induced fan wheel

discharges into a flue passage and flue gases exit out a

flue hood on the side of the unit. The induced draft fan

motor includes a Hall Effect sensor circuit that confirms

adequate wheel speed via the Integrated Gas Control

(IGC) board. Safety switches include a Rollout Switch (at

the top of the burner compartment) and a limit switch

(mounted through the fan deck, over the tubes). (See Fig.

30 and 31.)

INDUCED-

DRAFT

MOTOR

MOUNTING

PLATE

BURNER

SECTION

INDUCED-

DRAFT MOTOR

MANIFOLD

PRESSURE

TAP

ROLLOUT

SWITCH

FLUE

EXHAUST

VESTIBULE

PLATE

BLOWER

HOUSING

GAS

VALVE

C09153

Fig. 30 -- Burner Section Details

Limit Switch

and Shield

C08284

Fig. 31 -- Limit Switch Location

Fuel Types and Pressures

Natural Gas

The 580J unit is factory--equipped for use with Natural

Gas fuel at elevation under 2000 ft (610 m). See section

Orifice Replacement for information in modifying this

unit for installation at elevations above 2000 ft (610 m).

Gas line pressure entering the unit’s main gas valve must

be within specified ranges. (See Table 5.) Adjust unit gas

regulator valve as required or consult local gas utility.

Table 5 – Natural Gas Supply Line Pressure Ranges

UNIT MODEL UNIT SIZE MIN MAX

580J All 4.0 in. wg

(996 Pa)

13.0 in. wg

(3240 Pa)

Manifold pressure is factory--adjusted for NG fuel use.

(See Table 6.) Adjust as required to obtain best flame

characteristic.

Table 6 – Natural Gas Manifold Pressure Ranges

UNIT

MODEL

UNIT

SIZE

HIGH

FIRE

LOW

FIRE RANGE

580J All 3.5 in. wg

(872 Pa)

1.7 in. wg

(423 Pa)

2.0--- 5.0 in. wg (Hi)

(498--- 1245 Pa)

Liquid Propane

Accessory packages are available for field--installation

that will convert the 580J unit to operate with Liquid

Propane (LP) fuels. These kits include new orifice spuds,

new springs for gas valves and a supply line low pressure

switch. See section on Orifice Replacement for details on

orifice size selections.

Fuel line pressure entering unit gas valve must remain

within specified range. (See Table 7.)

580J

26

Table 7 – Liquid Propane Supply Line Pressure Ranges

UNIT MODEL UNIT SIZE MIN MAX

580J All 11.0 in. wg

(2740 Pa)

13.0 in. wg

(3240 Pa)

Manifold pressure for LP fuel use must be adjusted to

specified range. (See Table 8.) Follow instructions in the

accessory kit to make initial readjustment.

Table 8 – Liquid Propane Manifold Pressure Ranges

UNIT MODEL UNIT SIZE HIGH FIRE LOW FIRE

580J All 10.0 in. wg

(2490 Pa)

5.0 in. wg

(1245 Pa)

Supply Pressure Switch

The LP conversion kit includes a supply low pressure

switch. The switch contacts (from terminal C to terminal

NO) will open the gas valve power whenever the supply

line pressure drops below the setpoint. (See Fig. 32 and

33.) If the low pressure remains open for 15 minutes

during a call for heat, the IGC circuit will initiate a

Ignition Fault (5 flashes) lockout. Reset of the low

pressure switch is automatic on rise in supply line

pressure. Reset of the IGC requires a recycle of unit

power after the low pressure switch has closed.

580JD08 only C08238

All 580J*D except DD08

C08239

Fig. 32 -- LP Low Pressure Switch (Installed)

PNK

W2

TSTAT

GRA

BRN

IGC

J2-12

IGC

J2-11

BRN

CNO

MGV

C

LP LPS

C08285

Fig. 33 -- LP Supply Line Low Pressure Switch Wiring

This switch also prevents operation when the propane tank

level is low which can result in gas with a high

concentration of impurities, additives, and residues that

have settled to the bottom of the tank. Operation under

these conditions can cause harm to the heat exchanger

system. Contact your fuel supplier if this condition is

suspected.

Flue Gas Passageways

To inspect the flue collector box and upper areas of the

heat exchanger:

1. Remove the combustion blower wheel and motor as-

sembly according to directions in Combustion--Air

Blower section. (See Fig. 34.)

2. Remove the flue cover to inspect the heat exchanger.

3. Clean all surfaces as required using a wire brush.

Combustion--Air Blower

Clean periodically to assure proper airflow and heating

efficiency. Inspect blower wheel every fall and

periodically during heating season. For the first heating

season, inspect blower wheel bi--monthly to determine

proper cleaning frequency.

To access burner section, slide the sliding burner partition

out of the unit.

To inspect blower wheel, shine a flashlight into draft hood

opening. If cleaning is required, remove motor and wheel

as follows:

1. Slide burner access panel out.

2. Remove the 7 screws that attach induced--draft motor

housing to vestibule plate. (See Fig. 34.)

3. The blower wheel can be cleaned at this point. If ad-

ditional cleaning is required, continue with Steps 4

and 5.

4. To remove blower from the motor shaft, remove 2

setscrews.

5. To remove motor, remove the 4 screws that hold the

motor to mounting plate. Remove the motor cooling

fan by removing one setscrew. Then remove nuts that

hold motor to mounting plate.

6. To reinstall, reverse the procedure outlined above.

580J

27

HEATER TUBE

ASSEMBLY

SEAL STRIPS,

SPONGE RUBBER

REGULATOR

GASKET

REGULATOR

RETAINER

WIND CAP

ASSEMBLY

(SHOWN

INVERTED,

AS SHIPPED)

BURNER ASSEMBLY

INDUCER FAN-MOTOR ASSEMBLY

SUPPORT INSULATION ASSEMBLY

C08227

Fig. 34 -- Heat Exchanger Assembly

Burners and Igniters

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in

equipment damage.

When working on gas train, do not hit or plug

orifice spuds.

CAUTION

!

Main Burners

To access burners, remove burner access panel and slide

out burner partition. At the beginning of each heating

season, inspect for deterioration or blockage due to

corrosion or other causes. Observe the main burner flames

and adjust, if necessary.

Orifice Projection

Refer to Fig. 35 for maximum projection dimension for

orifice face to manifold tube.

ORIFICE

1.00-in

(25.4 mm)

M

ANIFOLD

PIPE

C08211

Fig. 35 -- Orifice Projection

Removal and Replacement of Gas Train

See Fig. 30, 34, and 36.

1. Shut off manual gas valve.

2. Shut off power to unit.

3. Slide out burner partition.

4. Disconnect gas piping at unit gas valve.

5. Remove wires connected to gas valve. Mark each

wire.

580J

28

MANIFOLD PRESSURE TAP

GAS

VALVE

BURNERS

C09154

Fig. 36 -- Burner Tray Details

6. Remove igniter wires and sensor wires at the Integ-

rated Gas Unit Controller (IGC). (See Fig. 37.)

7. Remove the 2 screws that attach the burner rack to

the vestibule plate. (See Fig. 34.)

8. Slide the burner tray out of the unit. (See Fig. 36.)

9. To reinstall, reverse the procedure outlined above.

Cleaning and Adjustment

1. Remove burner rack from unit as described in Re-

moval and Replacement of Gas Train section.

2. Inspect burners; if dirty, remove burners from rack.

(Mark each burner to identify its position before re-

moving from the rack.)

3. Use a soft brush to clean burners and cross--over port

as required.

4. Adjust spark gap. (See Fig. 38.)

5. If factory orifice has been removed, check that each

orifice is tight at its threads into the manifold pipe

and that orifice projection does not exceed maximum

valve. (See Fig. 35).

6. Reinstall burners on rack in the same locations as

factory--installed. (The outside crossover flame re-

gions of the outermost burners are pinched off to pre-

vent excessive gas flow from the side of the burner

assembly. If the pinched crossovers are installed

between two burners, the flame will not ignite prop-

erly.)

RACEWAY INTEGRATED GAS UNIT

CONTROLLER (IGC)

HOLE IN END PANEL (HIDDEN)

C08454

Fig. 37 -- Unit Control Box/IGC Location

7. Reinstall burner rack as described in Removal and

Replacement of Gas Train section, above.

Gas Valve — All unit sizes are equipped with 2--stage gas

valves. See Fig. 39 for locations of adjustment screws and

features on the gas valves.

To adjust gas valve pressure settings:

IMPORTANT: Leak check all gas connections including

the main service connection, gas valve, gas spuds, and

manifold pipe plug. All leaks must be repaired before

firing unit.

Check Unit Operation and Make Necessary

Adjustments

NOTE: Gas supply pressure at gas valve inlet must be

within specified ranges for fuel type and unit size. (See

Table 5, 6, 7, and 8.)

1. Remove manifold pressure tap plug from manifold

and connect pressure gauge or manometer. (See Fig.

36.)

2. Turn on electrical supply.

3. Turn on unit main gas valve.

4. Set room thermostat to call for heat. Verify high--

stage heat operation before attempting to adjust mani-

fold pressure.

5. When main burners ignite, check all fittings, mani-

fold, and orifices for leaks.

6. Adjust high--stage pressure to specified setting by

turning the plastic adjustment screw clockwise to in-

crease pressure, counter--clockwise to decrease pres-

sure.

7. Set room thermostat to call for low--stage heat. Adjust

low--stage pressure to specified setting.

8. Replace regulator cover screw(s) when finished.

9. With burner access panel removed, observe unit heat-

ing operation in both high stage and low stage opera-

tion. Observe burner flames to see if they are blue in

appearance, and that the flames are approximately the

same for each burner.

10. Turn off unit, remove pressure manometer and re-

place the 1/8 in. pipe fitting on the gas manifold. (See

Fig. 36.)

Limit Switch

Remove blower access panel. Limit switch is located on

the fan deck. (See Fig. 31.)

580J

29

125,000/90,000 BTUH INPUT

180,000/120,000 BTUH INPUT

240,000/180,000 BTUH INPUT

250,000/200,000 BTUH INPUT

C08447

Fig. 38 -- Spark Adjustment (08--14)

Burner Ignition

Unit is equipped with a direct spark ignition 100% lockout

system. Integrated Gas Unit Controller (IGC) is located in

the control box. (See Fig. 37.) The IGC contains a

self--diagnostic LED (light--emitting diode). A single LED

on the IGC provides a visual display of operational or

sequential problems when the power supply is

uninterrupted. (See Fig. 40.) When a break in power

occurs, the IGC will be reset (resulting in a loss of fault

history) and the indoor (evaporator) fan ON/OFF times

will be reset. The LED error code can be observed

through the viewport. During servicing refer to the label

on the control box cover or Table 9 for an explanation of

LED error code descriptions.

If lockout occurs, unit may be reset by interrupting power

supply to unit for at least 5 seconds.

Table 9 – LED Error Code Description*

LED INDICATION ERROR CODE

DESCRIPTION

ON Normal Operation

OFF Hardware Failure

2Flashes Limit Switch Fault

3Flashes Flame Sense Fault

4Flashes 4 Consecutive Limit Switch Faults

5Flashes Ignition Lockout Fault

6Flashes Induced--- Draft Motor Fault

7Flashes Rollout Switch Fault

8Flashes Internal Control Fault

9Flashes Software Lockout

LEGEND

LED --- L i g h t E m i t t i n g D i o d e

* A 3 – second pause exists between LED error code flashes. If

more than one error code exists, all applicable codes will be

displayed in numerical sequence.

IMPORTANT: Refer to Troubleshooting Table 13 and 14

for additional information.

580J

30

C08240

C08241

580J08(D,F)150 only

All 580J*D,F except 150

Fig. 39 -- Gas Valve

Orifice Replacement

This unit uses orifice type LH32RFnnn (where nnn

indicates orifice reference size). When replacing unit

orifices, order the necessary parts via Bryant RCD. See

Table 11 for available orifice sizes. See Table 12 for

orifice sizes for Natural Gas and LP fuel usage at various

elevations above sea level.

Check that each replacement orifice is tight at its threads

into the manifold pipe and that orifice projection does not

exceed maximum value. (See Fig. 35.)

580J

31

Red LED-Status

C08452

Fig. 40 -- Integrated Gas Control (IGC) Board

Table 10 – IGC Connections

TERMINAL LABEL POINT DESCRIPTION SENSOR LOCATION TYPE OF I/O CONNECTION

PIN NUMBER

INPUTS

RT, C Input power from TRAN 1 control box 24 VAC —

SS Speed sensor gas section analog input J1, 1-3

FS, T1 Flame sensor gas section switch input —

WHeat stage 1 LCTB 24 VAC J2, 2

RS Rollout switch gas section switch input J2, 5-6

LS Limit switch fan section switch input J2, 7-8

CS Centrifugal switch (not used) —switch input J2, 9-10

OUTPUTS

L1, CM Induced draft combustion motor gas section line VAC

IFO Indoor fan control box relay J2, 1

GV Gas valve (heat stage 1) gas section relay J2, 11-12

580J

32

Table 11 – Orifice Sizes

ORIFICE

DRILL SIZE

BRYANT

PART NUMBER

DRILL

DIA. (in.)

#30 LH32RF129 0.1285

1/8 LH32RF125 0.1250

#31 LH32RF120 0.1200

#32 LH32RF116 0.1160

#33 LH32RF113 0.1130

#34 LH32RF111 0.1110

#35 LH32RF110 0.1100

#36 LH32RF105 0.1065

#37 LH32RF104 0.1040

#38 LH32RF102 0.1015

#39 LH32RF103 0.0995

#40 LH32RF098 0.0980

#41 LH32RF096 0.0960

#42 LH32RF094 0.0935

#43 LH32RF089 0.0890

#44 LH32RF086 0.0860

#45 LH32RF082 0.0820

#46 LH32RF080 0.0810

#47 LH32RF079 0.0785

#48 LH32RF076 0.0760

#49 LH32RF073 0.0730

#50 LH32RF070 0.0700

#51 LH32RF067 0.0670

#52 LH32RF065 0.0635

#53 LH32RF060 0.0595

#54 LH32RF055 0.0550

#55 LH32RF052 0.0520

#56 LH32RF047 0.0465

#57 LH32RF043 0.0430

#58 LH32RF042 0.0420

Table 12 -- Altitude Compensation* (08--14)

ELEVATION

ft (m)

125,000

BTUH Nominal

250,000

BTUH Nominal

180,000, 224,000

BTUH Nominal

NG Orifice

Size

LP Orifice

Size

NG Orifice

Size

LP Orifice

Size

NG Orifice

Size

LP Orifice

Size

0 --- 2000 (610) 311493†30 463311483

2000 (610) 321503†30 473321493

3000 (914) 321503311473321493

4000 (1219) 331503311483331493

5000 (1524) 331514311483331503

6000 (1829) 341514311483341503

7000 (2134) 351514321493351503

8000 (2438) 361524331493361514

9000 (2743) 372524341503372514

10000 (3048) 382524351503382524

11000 (3353) 392534361514392524

12000 (3658) †41 534372514†41 534

13000 (3962) †42 544382524†42 534

14000 (4267) †43 544†40 534†43 544

LEGEND

NG = Natural Gas LP = Liquid Propane

* As the height above sea level increases, there is less oxygen

per cubic ft. of air. Therefore, heat input rate should be reduced

at higher altitudes.

{Not included in kit. May be purchased separately through

dealer.

1 = CRLPELEV001A00

2 = CRLPELEV002A00

3 = CRLPELEV003A00

4 = CRLPELEV004A00

580J

33

Minimum Heating Entering Air Temperature

When operating on first stage heating, the minimum

temperature of air entering the dimpled heat exchanger is

50_F continuous and 45_F intermittent for standard heat

exchangers and 40_F continuous and 35_F intermittent for

stainless steel heat exchangers. To operate at lower

mixed--air temperatures, a field--supplied outdoor--air

thermostat must be used to initiate both stages of heat

when the temperature is below the minimum required

temperature to ensure full fire operation. Wire the

outdoor--air thermostat OALT (part no. HH22AG106) in

series with the second stage gas valve. (See Fig. 41.) Set

the outdoor--air thermostat at 35_F for stainless steel heat

exchangers or 45_F for standard heat exchangers. This

temperature setting will bring on the second stage of heat

whenever the ambient temperature is below the thermostat

setpoint. Indoor comfort may be compromised when

heating is initiated using low entering air temperatures

with insufficient heating temperature rise.

LCTB

W2

Thermostat

TH1

TH2

W1

W1

W2

OALT

C08442

Fig. 41 -- OATL Connections

Troubleshooting Heating System

Refer to Table 13 and 14 for additional troubleshooting

topics.

Table 13 – Heating Service Analysis

PROBLEM CAUSE REMEDY

Burners Will Not Ignite.

Misaligned spark electrodes. Check flame ignition and sensor electrode positioning.

Adjust as needed.

No gas at main burners.

Check gas line for air, purge as necessary. After purging

gas line of air, allow gas to dissipate for at least 5 minutes

before attempting to relight unit.

Check gas valve.

Water in gas line. Drain water and install drip leg to trap water.

No power to furnace. Check power supply, fuses, wiring, and circuit breaker.

No 24 v power supply to control

circuit.

Check transformer. Transformers with internal overcurrent

protection require a cool down period before resetting.

Miswired or loose connections. Check all wiring and wire nut connections.

Burned ---out heat anticipator in

thermostat. Replace thermostat.

Broken thermostat wires. Run continuity check. Replace wires, if necessary.

Inadequate Heating.

Dirty air filter. Clean or replace filter as necessary.

Gas input to unit too low.

Check gas pressure at manifold. Clock gas meter for input.

If too low, increase manifold pressure, or replace with

correct orifices.

Unit undersized for application. Replace with proper unit or add additional unit.

Restricted airflow. Clean filter, replace filter, or remove any restrictions.

Blower speed too low. Use high speed tap, increase fan speed, or install optional

blower, as suitable for individual units.

Limitswitchcyclesmainburners. Check rotation of blower, thermostat heat anticipator

settings, and temperature rise of unit. Adjust as needed.

Too much outdoor air. Adjust minimum position.

Check economizer operation.

Poor Flame

Characteristics.

Incomplete combustion (lack of

combustion air) results in:

Aldehyde odors, CO, sooting

flame, or floating flame.

Check all screws around flue outlets and burner

compartment. Tighten as necessary.

Cracked heat exchanger.

Overfired unit — reduce input, change orifices, or adjust

gas line or manifold pressure.

Check vent for restriction. Clean as necessary.

Check orifice to burner alignment.

Burners Will Not Turn

Off.

Unit is locked into Heating mode

for a one minute minimum.

Wait until mandatory one---minute time period has elapsed

or reset power to unit.

580J

34

Table 14 – IGC Board LED Alarm Codes

LED

FLASH

CODE

DESCRIPTION ACTION TAKEN BY

CONTROL RESET METHOD PROBABLE CAUSE

On Normal Operation — — —

Off Hardware Failure No gas heating. —

Loss of power to the IGC. Check 5 amp

fuse on IGC, power to unit, 24V circuit

breaker, transformer, and wiring to the

IGC.

2

Flashes Limit Switch Fault

Gas valve and igniter

Off.

Indoor fan and inducer

On.

Limit switch closed,

or heat call (W) Off.

High temperature limit switch is open.

Check the operation of the indoor

(evaporator) fan motor.

Ensure that the supply-air temperature

rise is within the range on the unit

nameplate. Check wiring and limit switch

operation.

3

Flashes Flame Sense Fault Indoor fan and inducer

On.

Flame sense normal.

Power reset for LED

reset.

The IGC sensed a flame when the gas

valve should be closed. Check wiring,

flame sensor, and gas valve operation.

4

Flashes

Four Consecutive Limit

Switch Fault No gas heating.

Heat call (W) Off.

Power reset for LED

reset.

4 consecutive limit switch faults within a

single call for heat. See Limit Switch Fault.

5

Flashes Ignition Fault No gas heating.

Heat call (W) Off.

Power reset for LED

reset.

Unit unsuccessfully attempted ignition for

15 minutes. Check igniter and flame

sensor electrode spacing, gaps, etc.

Check flame sense and igniter wiring.

Check gas valve operation and gas

supply.

6

Flashes

Induced Draft Motor

Fault

If heat off: no gas

heating.

If heat on: gas valve

Off and inducer On.

Inducer sense

normal, or heat call

(W) Off.

Inducer sense On when heat call Off, or

inducer sense Off when heat call On.

Check wiring, voltage, and operation of

IGC motor. Check speed sensor wiring to

IGC.

7

Flashes Rollout Switch Lockout

Gas valve and igniter

Off.

Indoor fan and inducer

On.

Power reset.

Rollout switch has opened. Check gas

valve operation. Check induced-draft

blower wheel is properly secured to motor

shaft.

8

Flashes Internal Control Lockout No gas heating. Power reset.

IGC has sensed internal hardware or

software error. If fault is not cleared by

resetting 24 v power, replace the IGC.

Check gas valve connections to IGC

terminals. BRN lead must be on Pin 11.

9

Flashes

Temporary Software

Lockout No gas heating. 1 hour auto reset, or

power reset.

Electrical interference is disrupting the

IGC software.

LEGEND

IGC --- Integrated Gas Unit Control

LED --- L i g h t --- E m i t t i n g D i o d e

NOTES:

1. There is a 3---second pause between alarm code displays.

2. If more than one alarm code exists, all applicable alarm codes will be displayed in numerical sequence.

3. Alarm codes on the IGC will be lost if power to the unit is interrupted.

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CONDENSER COIL SERVICE

Condenser Coil

The condenser coil is new NOVATION Heat Exchanger

Technology. This is an all--aluminum construction with

louvered fins over single--depth crosstubes. The crosstubes

have multiple small passages through which the

refrigerant passes from header to header on each end.

Tubes and fins are both aluminum construction.

Connection tube joints are copper. The coil may be

one--row or two--row. Two--row coils are spaced apart to

assist in cleaning.

Repairing NOVATION Condenser Tube Leaks

RCD offers service repair kit Part Number 50TJ660007

for repairing tube leaks in the NOVATION coil crosstubes.

This kit includes approved braze materials (aluminum flux

core braze rods), a heat shield, a stainless steel brush,

replacement fin segments, adhesive for replacing fin

segments, and instructions specific to the NOVATION

aluminum coil. See EPIC for instruction sheet

99TA526379.

The repair procedure requires the use of MAPP gas and

torch (must be supplied by servicer) instead of

conventional oxyacetylene fuel and torch. While the

flame temperature for MAPP is lower than that of

oxyacetylene (and thus provides more flexibility when

working on aluminum), the flame temperature is still

higher than the melting temperature of aluminum, so user

caution is required. Follow instructions carefully. Use the

heat shield.

Replacing NOVATION Condenser Coil

The service replacement coil is preformed and is equipped

with transition joints with copper stub tubes. When

brazing the connection joints to the unit tubing, use a wet

cloth around the aluminum tube at the transition joint.

Avoid applying torch flame directly onto the aluminum

tubing.

RTU--MP CONTROL SYSTEM

The RTU--MP controller provides expanded stand--alone

operation of the HVAC system plus connection and

control through communication with several Building

Automation Systems (BAS) through popular third--party

network systems. (See Fig. 42.) The available network

systems are BACnet MP/TP, Modbus and Johnson J2.

Communication with LonWorks is also possible by adding

an accessory interface card to the RTU--MP. Selection of

the communication protocol and baud rate are made at

on--board DIP switches.

Bryant’s diagnostic display tools BACviewer6 Handheld

and Virtual BACview (loaded on a portable PC) must be

used with the RTU--MP controller. Connection to the

RTU--MP board is at the J12 access port. (See Fig. 42.)

The RTU--MP control is factory--mounted in the 48TC

unit’s main control box, to the left of the LCTB. (See Fig.

43.) Factory wiring is completed through harnesses

connected to the LCTB. Field connections for RTU--MP

sensors will be made at the Phoenix connectors on the

RTU--MP board. The factory--installed RTU--MP control

includes the supply--air temperature (SAT) sensor. The

outdoor air temperature (OAT) sensor is included in the

FIOP/accessory EconoMi$er 2 package.

Refer to Table 15, RTU--MP Controller Inputs and

Outputs, for locations of all connections to the RTU--MP

board.

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C07129

Fig. 42 -- RTU--MP Multi--Protocol Control Board

580J

37

C09163

Fig. 43 -- Typical RTU--MP System Control Wiring Diagram

580J

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Table 15 – RTU--MP Controller Inputs and Outputs

POINT NAME BACnet OBJECT

NAME TYPE OF I/O CONNECTION PIN

NUMBERS

INPUTS

Space Temperature Sensor sptsens AI (10K Thermistor) J 2 0 --- 1 , 2

Supply Air Temperature sat AI (10K Thermistor) J 2 --- 1 , 2

Local Outside Air Temperature Sensor oatsens AI (10K Thermistor) J 2 --- 3 , 4

Space Temperature Offset Pot sptopot AI (100K Potentiometer) J 2 0 --- 3

Indoor Air Quality iaq A I ( 4 --- 2 0 m a ) J 4 --- 2 , 3

Outdoor Air Quality oaq A I ( 4 --- 2 0 m a ) J 4 --- 5 , 6

Safety Chain Feedback safety DI (24 VAC) J 1 --- 9

Compressor Safety compstat DI (24 VAC) J 1 --- 2

Fire Shutdown firedown DI (24 VAC) J 1 --- 1 0

Enthalpy Switch enthalpy DI (24 VAC) J 2 --- 6 , 7

Humidistat Input Status humstat DI (24 VAC) J 5 --- 7 , 8

CONFIGURABLE INPUTS*

Space Relative Humidity sprh A I ( 4 --- 2 0 m a ) J4---2,3 or J4---5,6

Outside Air Relative Humidity oarh A I ( 4 --- 2 0 m a )

Supply Fan Status fanstat DI (24 VAC) J 5 --- 1 , 2 o r J 5 --- 3 , 4 o r

J5 5,6 or J5 --- 7,8

Filter Status filtstat DI (24 VAC)

Remote Occupancy Input remocc DI (24 VAC)

OUTPUTS

Economizer Commanded Position econocmd 4 --- 2 0 m a J 2 --- 5

SupplyFanRelayState sf DO Relay (24VAC , 1A) J 1 --- 4

Compressor 1 Relay State comp_1 DO Relay (24VAC , 1A) J 1 --- 8

Compressor 2 Relay State comp_2 DO Relay (24VAC , 1A) J 1 --- 7

Heat Stage 1 Relay State heat_1 DO Relay (24VAC , 1A) J 1 --- 6

Heat Stage 2 Relay State heat_2 DO Relay (24VAC , 1A) J 1 --- 5

Power Exhaust Relay State aux_2 DO Relay (24VAC , 1A) J 1 1 --- 3

Dehumidification Relay State humizer DO Relay (24VAC, 1A) J 1 1 --- 7 , 8

LEGEND

AI --- A n a l o g I n p u t

AO --- A n a l o g O u t p u t

DI --- D i s c r e t e I n p u t

DO --- Discrete Output

* These inputs (if installed) take the place of the default input on the specific channel according to schematic.

P a r a l l e l p i n s J 5 --- 1 = J 2 --- 6 , J 5 --- 3 = J 1 --- 1 0 , J 5 --- 5 = J 1 --- 2 a r e u s e d f o r f i e l d --- i n s t a l l a t i o n .

Refer to the input configuration and accessory sections for more detail.

NOTE: Refer to RTU--MP Controls, Start-Up, Operation,

and Troubleshooting Instructions (Form 48--50H--T--2T)

for complete configuration of RTU--MP, operating

sequences and troubleshooting information. Refer to

RTU--MP 3rd Party Integration Guide for details on

configuration and troubleshooting of connected networks.

Have a copy of these manuals available at unit start--up.

The RTU--MP controller requires the use of a Bryant

space sensor. A standard thermostat cannot be used with

the RTU--MP system.

Supply Air Temperature (SAT) Sensor

On FIOP--equipped 580J unit, the unit is supplied with a

supply--air temperature (SAT) sensor (33ZCSENSAT).

This sensor is a tubular probe type, approx 6--inches (12.7

mm) in length. It is a nominal 10--k ohm thermistor. See

Table 16 for temperature--resistance characteristic.

The SAT is factory--wired. The SAT probe is wire--tied to

the supply--air opening (on the horizontal opening end) in

its shipping position. Remove the sensor for installation.

Re--position the sensor in the flange of the supply--air

opening or in the supply air duct (as required by local

codes). Drill or punch a 1/2--in. hole in the flange or duct.

Use two field--supplied, self--drilling screws to secure the

sensor probe in a horizontal orientation. (See Fig. 43.)

Outdoor Air Temperature (OAT) Sensor

The OAT is factory--mounted in the EconoMi$er 2 (FIOP

or accessory). It is a nominal 10k ohm thermistor attached

to an eyelet mounting ring. See Table 16 for

temperature--resistance characteristic.

580J

39

Table 16 – Thermistor Resistance vs Temperature

Values for Space Temperature Sensor, Supply Air

Temperature Sensor, and Outdoor Air Temperature

Sensor

TEMP

(C)

TEMP

(F)

RESISTANCE

(Ohms)

--- 4 0 --- 4 0 335,651

--- 3 5 --- 3 1 242,195

--- 3 0 --- 2 2 176,683

--- 2 5 --- 1 3 130,243

--- 2 0 --- 4 96,974

--- 1 5 572,895

--- 1 0 14 55,298

--- 5 23 42,315

032 32,651

541 25,395

10 50 19,903

15 59 15,714

20 68 12,494

25 77 10,000

30 86 8,056

35 95 6,530

40 104 5,325

45 113 4,367

50 122 3,601

55 131 2,985

60 140 2,487

65 149 2,082

70 158 1,752

SUPPLY AIR RETURN AIR

SUPPLY AIR

TEMPERATURE

SENSOR

ROOF

CURB

C08200

Fig. 44 -- Typical Mounting Location for Supply Air

Temperature (SAT) Sensor on Small Rooftop Units

EconoMi$er 2

The RTU--MP control is used with EconoMi$er2 (option

or accessory) for outdoor air management. The damper

position is controlled directly by the RTU--MP control;

EconoMi$er 2 has no internal logic device.

Outdoor air management functions can be enhanced with

field--installation of these accessory control devices:

SEnthalpy control (outdoor air or differential sensors)

SSpace CO2sensor

SOutdoor air CO2sensor

Field Connections -- Field connections for accessory

sensors and input devices are made the RTU--MP, at plugs

J1, J2, J4, J5, J11 and J20. All field control wiring that

connects to the RTU--MP must be routed through the

raceway built into the corner post as shown in Fig. 37.

The raceway provides the UL required clearance between

high-- and low--voltage wiring. Pass the control wires

through the hole provided in the corner post, then feed the

wires thorough the raceway to the RTU--MP. Connect to

the wires to the removable Phoenix connectors and then

reconnect the connectors to the board.

Space Temperature (SPT) Sensors

A field--supplied Bryant space temperature sensor is

required with the RTU--MP to monitor space temperature.

There are 3 sensors available for this application:

S33ZCT55SPT, space temperature sensor with override

button

S33ZCT56SPT, space temperature sensor with override

button and setpoint adjustment

S33ZCT59SPT, space temperature sensor with LCD

(liquid crystal display) screen, override button, and

setpoint adjustment

Use 20 gauge wire to connect the sensor to the controller.

The wire is suitable for distances of up to 500 ft. Use a

three--conductor shielded cable for the sensor and setpoint

adjustment connections. If the setpoint adjustment

(slidebar) is not required, then an unshielded, 18 or 20

gauge, two--conductor, twisted pair cable may be used.

Connect T--55

See Fig. 45 for typical T--55 internal connections. Connect

the T--55 SEN terminals to RTU--MP J20--1 and J20--2.

(See Fig. 46.)

2345 61

SW1

SEN

BRN (GND)

BLU (SPT)

RED(+)

WHT(GND)

BLK(-) CCN COM

SENSOR WIRING

C08201

Fig. 45 -- T--55 Space Temperature Sensor Wiring

580J

40

SEN

SEN

J20-1

J20-2

C08460

Fig. 46 -- RTU--MP T--55 Sensor Connections

Connect T--56

See Fig. 47 for T--56 internal connections. Install a jumper

between SEN and SET terminals as illustrated. Connect

T--56 terminals to RTU--MP J20--1, J20--2 and J20--3 per

Fig. 48.

2345 61

SW1

SEN SET

Cool Warm

BRN (GND)

BLU (SPT)

RED(+)

WHT(GND)

BLK(-) CCN COM

SENSOR WIRING

JUMPER

TERMINALS

AS SHOWN

BLK

(T56)

C08202

Fig. 47 -- T--56 Internal Connections

SEN J20-1

J20-2

SEN

SET

Jumper

J20-3

SET

C08461

Fig. 48 -- RTU--MP T--56 Sensor Connections

Connect T--59

The T--59 space sensor requires a separate, isolated power

supply of 24 VAC. See Fig. 49 for internal connections at

the T--59. Connect the SEN terminal (BLU) to RTU--MP

J20--1. Connect the COM terminal (BRN) to J20--2.

Connect the SET terminal (STO or BLK) to J20--3.

OR SET SEN

OPB COM- PWR+

BLU (SPT)

BLK (STO)

24 VAC

SENSOR

WIRING

POWER

WIRING

BRN (COM)

NOTE: Must use a separate isolated transformer.

C07132

Fig. 49 -- Space Temperature Sensor Typical Wiring

(33ZCT59SPT)

Economizer Controls

Outdoor Air Enthalpy Control (PNO HH57AC077)

The enthalpy control (HH57AC077) is available as a

field--installed accessory to be used with the EconoMi$er2

damper system. The outdoor air enthalpy sensor is part of

the enthalpy control. (The separate field--installed

accessory return air enthalpy sensor (HH57AC078) is

required for differential enthalpy control.)

Locate the enthalpy control in the economizer hood.

Locate two GRA leads in the factory harness and connect

these leads to enthalpy control sensors 2 and 3. (See Fig.

50.) Connect the enthalpy control power input terminals to

economizer actuator power leads RED (connect to TR)

and BLK (connect to TR1).

6

7

LCTB

ECON

3

2

Enthalpy

Switch

GRA

GRA

Factory Wiring Harness

C08218

Fig. 50 -- Enthalpy Switch (HH57AC077) Connections

The outdoor enthalpy changeover setpoint is set at the

enthalpy controller.

580J

41

The enthalpy control receives the outdoor air enthalpy

from the outdoor air enthalpy sensor and provides a dry

contact switch input to the RTU--MP controller. A closed

contact indicates that outside air is preferred to the return

air. An open contact indicates that the economizer should

remain at minimum position.

Differential Enthalpy Control

Differential enthalpy control is provided by sensing and

comparing the outside air and return air enthalpy

conditions. Install the outdoor air enthalpy control as

described above. Add and install a return air enthalpy

sensor.

Return Air Enthalpy Sensor

Mount the return--air enthalpy sensor (HH57AC078) in the

return--air duct. The return air sensor is wired to the

enthalpy controller (HH57AC077). (See Fig. 51.)

LED

ABC

D

TR TR1

SO

SR

23

1

+

+

BRN

RED

GRAY/ORN

GRAY/RED

WIRE HARNESS

IN UNIT

BLK

RED

S

+(RETURN AIR

ENTHALPY

SENSOR)

S

+

(OUTDOOR

AIR

ENTHALPY

SENSOR)

ENTHALPY CONTROLLER

NOTES:

1. Remove factory-installed jumper across SR and + before connecting

wires from return air sensor.

2. Switches shown in high outdoor air enthalpy state. Terminals 2 and 3

close on low outdoor air enthalpy relative to indoor air enthalpy.

3. Remove sensor mounted on back of control and locate in outside air-

stream.

C06019

Fig. 51 -- Outside and Return Air Enthalpy

Sensor Wiring

To wire the return air enthalpy sensor, perform the

following:

1. Use a 2--conductor, 18 or 20 AWG, twisted pair cable

to connect the return air enthalpy sensor to the

enthalpy controller.

2. At the enthalpy control remove the factory--installed

resistor from the (SR) and (+) terminals.

3. Connect the field--supplied RED wire to (+) spade

connector on the return air enthalpy sensor and the

(SR+) terminal on the enthalpy controller. Connect

the BLK wire to (S) spade connector on the return air

enthalpy sensor and the (SR) terminal on the enthalpy

controller.

NOTE: The enthalpy control must be set to the “D”

setting for differential enthalpy control to work properly.

The enthalpy control receives the indoor and return

enthalpy from the outdoor and return air enthalpy sensors

and provides a dry contact switch input to the RTU--MP

controller. A closed contact indicates that outside air is

preferred to the return air. An open contact indicates that

the economizer should remain at minimum position.

Indoor Air Quality (CO2Sensor)

The indoor air quality sensor accessory monitors space

carbon dioxide (CO2) levels. This information is used to

monitor IAQ levels. Several types of sensors are available,

for wall mounting in the space or in return duct, with and

without LCD display, and in combination with space

temperature sensors. Sensors use infrared technology to

measure the levels of CO2present in the space air.

The CO2sensors are all factory set for a range of 0 to

2000 ppm and a linear mA output of 4 to 20. Refer to the

instructions supplied with the CO2sensor for electrical

requirements and terminal locations. See Fig. 52 for

typical CO2sensor wiring schematic.

C07134

Fig. 52 -- Indoor/Outdoor Air Quality (CO2)Sensor

(33ZCSENCO2) -- Typical Wiring Diagram

To accurately monitor the quality of the air in the

conditioned air space, locate the sensor near a return--air

grille (if present) so it senses the concentration of CO2

leaving the space. The sensor should be mounted in a

location to avoid direct breath contact.

Do not mount the IAQ sensor in drafty areas such as near

supply ducts, open windows, fans, or over heat sources.

Allow at least 3 ft (0.9 m) between the sensor and any

corner. Avoid mounting the sensor where it is influenced

by the supply air; the sensor gives inaccurate readings if

the supply air is blown directly onto the sensor or if the

supply air does not have a chance to mix with the room air

before it is drawn into the return airstream.

Wiring the Indoor Air Quality Sensor

For each sensor, use two 2--conductor 18 AWG (American

Wire Gauge) twisted--pair cables (unshielded) to connect

the separate isolated 24 vac power source to the sensor

and to connect the sensor to the control board terminals.

580J

42

To connect the sensor to the control, identify the positive

(4 to 20 mA) and ground (SIG COM) terminals on the

sensor. (See Fig. 52.) Connect the 4--20 mA terminal to

RTU--MP J4--2 and connect the SIG COM terminal to

RTU--MP J4--3. (See Fig. 53.)

SEN

COM

J4-2

J4-3

IAQ Sensor

24 VAC

C08462

Fig. 53 -- RTU--MP / Indoor CO2Sensor

(33ZCSENCO2) Connections

Outdoor Air Quality Sensor (PNO 33ZCSENCO2 plus

Weatherproof Enclosure)

The outdoor air CO2sensor is designed to monitor carbon

dioxide (CO2) levels in the outside ventilation air and

interface with the ventilation damper in an HVAC system.

The OAQ sensor is packaged with an outdoor cover. (See

Fig. 54.) The outdoor air CO2sensor must be located in

the economizer outside air hood.

COVER REMOVED SIDE VIEW

C07135

Fig. 54 -- Outdoor Air Quality Sensor Cover

Wiring the Outdoor Air CO2Sensor

A dedicated power supply is required for this sensor. A

two--wire cable is required to wire the dedicated power

supply for the sensor. The two wires should be connected

to the power supply and terminals 1 and 2.

To connect the sensor to the control, identify the positive

(4 to 20 mA) and ground (SIG COM) terminals on the

OAQ sensor. (See Fig. 52.) Connect the 4 to 20 mA

terminal to RTU--MP J4--5. Connect the SIG COM

terminal to RTU--MP J4--6. (See Fig. 55.)

SEN

COM

J4-5

J4-6

OAQ Sensor/RH Sensor

24 VAC

C08463

Fig. 55 -- RTU--MP / Outdoor CO2Sensor

(33ZCSENCO2) Connections

On 580J units equipped with factory--installed Smoke

Detector(s), the smoke detector controller implements the

unit shutdown through its NC contact set connected to the

unit’s LCTB input. The FSD function is initiated via the

smoke detector’s Alarm NO contact set. The RTU--MP

controller communicates the smoke detector’s tripped

status to the BAS building control. See Fig. 26 for unit

smoke detector wiring.

The Fire Shutdown Switch configuration,

MENU

→

Config

→

Inputs

→

input 5, identifies the

normally open status of this input when there is no fire

alarm.

Alarm state is reset when the smoke detector alarm

condition is cleared and reset at the smoke detector in the

unit.

Connecting Discrete Inputs

Filter Status

The filter status accessory is a field--installed accessory.

This accessory detects plugged filters. When installing

this accessory, the unit must be configured for filter status

by setting MENU

→

Config

→

Inputs

→

input3,5,8,or9

to Filter Status and normally open (N/O) or normally

closed (N/C). Input 8 or 9 is recommended for easy of

installation. Refer to Fig. 42 and 43 for wire terminations

at J5.

Fan Status

The fan status accessory is a field--installed accessory.

This accessory detects when the indoor fan is blowing air.

When installing this accessory, the unit must be

configured for fan status by setting

MENU

→

Config

→

Inputs

→

input3,5,8,or9to Fan

Status and normally open (N/O) or normally closed (N/C).

Input 8 or 9 is recommended for easy of installation. Refer

to Fig. 42 and 43 for wire terminations at J5.

580J

43

Remote Occupancy

The remote occupancy accessory is a field--installed

accessory. This accessory overrides the unoccupied mode

and puts the unit in occupied mode. When installing this

accessory, the unit must be configured for remote

occupancy by setting MENU

→

Config

→

Inputs

→

input 3,

5, 8, or 9 to Remote Occupancy and normally open (N/O)

or normally closed (N/C).

Also set MENU

→

Schedules

→

occupancy source to DI

on/off. Input 8 or 9 is recommended for easy of

installation. Refer to Fig. 42 and Table 15 for wire

terminations at J5.

Power Exhaust (output)

Connect the accessory Power Exhaust contactor coil(s) per

Fig. 56.

Power Exhaust

J11-3

C

THERMOSTAT

PEC TAN

GRA

LCTB

C08464

Fig. 56 -- RTU--MP Power Exhaust Connections

Space Relative Humidity Sensor

Space Relative Humidity Sensor -- The RH sensor is not

used with 580J models at this time.

Communication Wiring -- Protocols

General

Protocols are the communication languages spoken by

control devices. The main purpose of a protocol is to

communicate information in the most efficient method

possible. Different protocols exist to provide different

kinds of information for different applications. In the BAS

application, many different protocols are used, depending

on manufacturer. Protocols do not change the function of

a controller; just make the front end user different.

The RTU--MP can be set to communicate on four different

protocols: BACnet, Modbus, N2, and LonWorks. Switch 3

(SW3) on the board is used to set protocol and baud rate.

Switches 1 and 2 (SW1 and SW2) are used to set the

board’s network address. See Fig 57 for the switch setting

per protocol. The 3rd party connection to the RTU--MP is

through plug J19. Refer to the RTU--MP 3rd Party

Integration Guide for more detailed information on

protocols, 3rd party wiring, and networking.

NOTE: Power must be cycled after changing the SW1--3

switch settings.

BACnet MS/TP

BACnet Master Slave/Token Passing (MS/TP) is used for

communicating BACnet over a sub--network of

BACnet--only controllers. This is the default Bryant

communications protocol. Each RTU--MP module acts as

an MS/TP Master. The speed of an MS/TP network can

range from 9600 to 76.8K baud. Physical Addresses can

be set from 01 to 99.

Modbus

The RTU--MP module can speak the Modicon Modbus

RTU Protocol as described in the Modicon Modbus

Protocol Reference Guide, PI--MBUS--300 Rev. J. The

speed of a Modbus network can range from 9600 to 76.8K

baud. Physical Addresses can be set from 01 to 99.

Johnson N2

N2 is not a standard protocol, but one that was created by

Johnson Controls, Inc. that has been made open and

available to the public. The speed of N2 network is

limited to only 9600 baud. Physical Addresses can be set

from 01 to 99.

LonWorks

LonWorks is an open protocol that requires the use of

Echelon’s Neuron microprocessor to encode and decode

the LonWorks packets. In order to reduce the cost of

adding that hardware on every module, a separate

LonWorks Option Card (LON--OC) was designed to

connect to the RTU--MP.

This accessory card is needed for LonWorks and has to be

ordered and connected using the ribbon cable to plug J15.

The RTU--MP’s baud rate must be set to 38.4k to

communicate with the LON--OC. The address switches

(SW1 & SW2) are not used with LonWorks.

Local Access

BACview6Handheld

The BACview6is a keypad/display interface used to

connect to the RTU--MP to access the control information,

read sensor values, and test the RTU. (See Fig. 58.) This is

an accessory interface that does not come with the MP

controller and can only be used at the unit. Connect the

BACview6to the RTU--MP’s J12 local access port. There

are 2 password protected levels in the display (User and

Admin). The user password defaults to 0000 but can be

changed. The Admin password is 1111 and cannot be

changed. There is a 10 minute auto logout if a screen is

left idle. See RTU--MP Controls, Start--Up, Operation, and

Troubleshooting Instructions (Form 48--50H--T--2T),

Appendix A for navigation and screen content.

580J

44

SW3 Protocol Selection

PROTOCOL DS8 DS7 DS6 DS5 DS4 DS3 DS2 DS1

BACnet MS/TP

(Master) Unused OFF OFF OFF ON OFF Select Baud Select Baud

Modbus

(Slave) Unused OFF OFF ON ON OFF Select Baud Select Baud

N2

(Slave) Unused OFF OFF OFF ON ON OFF OFF

LonWorks Unused ON ON OFF ON OFF OFF OFF

NOTE:

DS = Dip Switch

BACnet MS/TP SW3 example shown

Baud Rate Selections

BAUD RATE DS2 DS1

9600 OFF OFF

19,200 ON OFF

38,400 OFF ON

76,800 ON ON

C07166

Fig. 57 -- RTU--MP SW3 Dip Switch Settings

Virtual BACview

Virtual BACview is a freeware computer program that

functions as the BACview6Handheld. The USB Link

interface (USB--L) is required to connect a computer to

the RTU--MP board. The link cable connects a USB port

to the J12 local access port. This program functions and

operates identical to the handheld.

RTU--MP Troubleshooting

Communication LEDs

The LEDs indicate if the controller is speaking to the

devices on the network. The LEDs should reflect

communication traffic based on the baud rate set. The

higher the baud rate the more solid the LEDs will appear.

C07170

Fig. 58 -- BACview6Handheld Connections

580J

45

Table 17 – LEDs

The LEDs on the RTU--MP show the status of certain functions

If this LED is on... Status is...

Power The RTU MP has power

Rx The RTU MP is receiving data from the network segment

Tx The RTU MP is transmitting data over the network segment

DO# The digital output is active

The Run and Error LEDs indicate control module and network status

If Run LED shows... And Error LED shows... Status is...

2 flashes per second Off Normal

2 flashes per second 2flashes,

alternating with Run LED

Five minute auto---restart delay after

system error

2 flashes per second 3flashes,

then off

Control module has just been

formatted

2 flashes per second 4flashes,

then pause

Two or more devices on this network

havethesameARC156networkaddress

2 flashes per second On Exec halted after frequent system errors

or control programs halted

5 flashes per second On Exec start--- up aborted, Boot is running

5 flashes per second Off Firmware transfer in progress, Boot is

running

7 flashes per second 7 flashes per second, alternating with

Run LED

Ten second recovery period after

brownout

14 flashes per second 14 flashes per second,

alternating with Run LED Brownout

On On

Failure. Try the following solutions:

STurn the RTU---MP off, then on.

SF o r m a t t h e R T U --- M P.

SDownload memory to the RTU---MP.

SReplace the RTU---MP.

580J

46

Table 18 – Troubleshooting Alarms

POINT NAME

BACnet

OBJECT

NAME

ACTION TAKEN BY

CONTROL

RESET

METHOD PROBABLE CAUSE

Safety Chain Alarm safety_chain

Alarm Generated

Immediate

Shutdown

Automatic Over load Indoor Fan or Electric Heater overheat.

Fire Shutdown Alarm fire_alarm

Alarm Generated

Immediate

Shutdown

Automatic Smoke detected by smoke detector or

configuration incorrect

Space Temp Sensor

Failure spt_alarm

Alarm Generated

Immediate

Shutdown

Automatic Faulty, shorted, or open thermistor caused by

wiring error or loose connection.

SAT Sensor Alarm sat_alarm

Alarm Generated

Immediate

Shutdown

Automatic Faulty, shorted, or open thermistor caused by

wiring error or loose connection.

High Space Temp Alarm spt_hi Alarm Generated Automatic Thespacetemperaturehasrisenabovethecool

setpoint by more than the desired amount.

Low Space Temp Alarm spt_lo Alarm Generated Automatic The space temperature has dropped below the

heat setpoint by more than the desired amount.

High Supply Air Temp sat_hi Alarm Generated Automatic SAT is greater then 160 degrees for more than 5

minutes.

Low Supply Air Temp sat_lo Alarm Generated Automatic Thesupplyairtemperatureisbelow35_Ffor

more than 5 minutes.

Supply Fan Failed to

Start sf_fail

Alarm Generated

Immediately

disable Operation

Automatic

Tripped Circuit Breaker, Broken belt, Bad indoor

fan motor, Configuration incorrect, Bad fan status

switch.

Supply Fan in Hand sf_hand

Alarm Generated

Ramp down

Operations

Automatic Bad Fan Status Switch, Configuration incorrect.

Compressor Safety

Alarm dx_compstat Alarm Generated Automatic Compressor would not start.

Setpoint Slider Alarm slide_alarm Alarm Generated

Offset set to zero Automatic STOsensorisopenorshortedformorethen5

seconds.

Dirty Filter Alarm filter Alarm Generated

Automatic/re

set timer

when

configured

with or

without

switch

Dirty Filter, supply fan run time exceeded, filter

switch configuration wrong.

Switch Configuration

Alarm sw_cfg_alarm

Alarm Generated

Disable

misconfigured switch

functions

Configure

correctly

More than one binary input is configured for the

same purpose. More then one discrete input is

configured to provide the same function.

Misconfigured Analog

Input an_cfg_alarm

Alarm Generated

Disable 4 selectable

analog inputs

Configure

correctly

More then one analog input is configured to

provide the same function.

OAT Sensor Alarm oat_alarm

Alarm Generated

Economizer and Low

ambient DX cooling

lockout disabled.

Automatic Faulty, shorted, or open thermistor caused by

wiring error or loose connection.

Space RH Sensor Alarm sprh_alarm

Alarm Generated

Dehumidification

disabled

Automatic Sensor reading is out of range. Bad sensor, bad

wiring, or sensor configured incorrectly.

Outdoor RH Sensor

Alarm oarh_alarm Alarm Generated Automatic Sensor reading is out of range. Bad sensor, bad

wiring, or sensor configured incorrectly.

High Space Humidity sprh_hi Alarm Generated Automatic IRH is greater then 70% for more then 10

minutes.

Low Space Humidity sprh_lo Alarm Generated Automatic IRH is less then 35% for more then 10 minutes.

IAQ Sensor Alarm iaq_alarm

Alarm Generated

Disables IAQ

Operation

Economizer moves

to minimum position

Automatic Sensor reading is out of range. Bad sensor, bad

wiring, or sensor configured incorrectly.

OAQ Sensor Alarm oaq_alarm Alarm Generated Set

OAQ to 400 Automatic Sensor reading is out of range. Bad sensor, bad

wiring, or sensor configured incorrectly.

High Carbon Dioxide

Level co2_hi Alarm Generated Automatic CO2 reading is above 1200ppm.

Supply Fan Runtime

Alarm sf_rntm Alarm Generated clear the

timer Supply fan run time exceeded user defined limit.

Compressor 1 Runtime

Alarm dx1_rntm Alarm Generated clear the

timer Compressor run time limit is exceeded.

Compressor 2 Runtime

Alarm dx2_rntm Alarm Generated clear the

timer Compressor run time limit is exceeded.

580J

47

Alarms

Alarms can be checked through the network and/or the

local access. All the alarms are listed in Table 18 with

name, object name, action taken by control, reset method,

and probable cause. There are help screens for each alarm

on the local access display and listed in RTU--MP

Controls, Start--Up, Operation, and Troubleshooting

Instructions (Form 48--50H--T--2T), Appendix A: Help

Screens. Some alarms are explained in detail below.

Safety Chain Alarm

This alarm occurs immediately if the supply--fan internal

overload trips or if an electric--heat limit switch trips. The

Unit Status will be Shutdown and the System Mode will

be Disable. When this happens LCTB (R terminal) will

not have 24 VAC, but the RTU--MP board will still be

powered. All unit operations stop immediately and will

not restart until the alarm automatically clears. There are

no configurations for this alarm; it is all based on internal

wiring. This alarm will never occur if Fire Shutdown

Alarm is active.

Fire Shutdown Alarm

This alarm occurs immediately when the smoke detector

senses smoke. The Unit Status will be Shutdown and the

System Mode will be Disable. All unit operations stop

immediately and will not restart until the alarm

automatically clears. If there is not a smoke detector

installed or the smoke detector did not trip, check input

configurations.

Space Temp Sensor Failure

This alarm occurs if the space sensor wired to the

RTU--MP is disconnected or shorted for more then 10

seconds. When this occurs the Unit Status will be

Shutdown and the System Mode will be Run. Sensor,

sensor connections, wiring, board connection, and

configurations should be checked for faults or errors.

Alarm will reset automatically when cause is fixed.

SAT Sensor Alarm

This alarm occurs immediately when the supply air

temperature sensor wired to the RTU--MP is disconnected

or shorted. When this occurs the Unit Status will be

Shutdown and the System Mode will be Run. Sensor,

sensor connections, wiring, board connection, and

configurations should be checked for faults or errors.

Alarm will reset automatically when cause is fixed.

Switch Configuration Alarm

This occurs if more than one binary input (inputs 3, 5, 8,

and 9) is configured for the same function. When this

happens the two inputs (or more) configured wrong will

be disabled as an inputs. This alarm will automatically be

cleared when configuration is corrected.

An example of this would be: Input 3 = Compressor

Safety, input 5 = Fan Status, input 8 = Fan Status, and

input 9 = Humidistat; the alarm would be active, unit

would run, compressor safety and humidistat would

function normally, and Fan Status (inputs 5 & 8) will be

interpreted as “No Function.”

Misconfigured Analog Input

This occurs if more than one analog input (inputs 1 & 2)

is configured for the same sensor. When this happens the

two inputs will be disabled as inputs. This alarm will

automatically be cleared when configuration is corrected.

An example of this would be: Input 1 = IAQ Sensor, input

2 = IAQ Sensor; the alarm would be active, unit would

run, but the IAQ Sensor (inputs 1 & 2) will be interpreted

as “No Function.”

Third Party Networking

Third party communication and networking

troubleshooting should be done by or with assistance from

the front end 3rd party technician. A Module Status

Report (Modstat) can be run from the BACview6,see

Table 19 to perform. This lists information about the

board status and networking state. For basic

troubleshooting, see Table 20. Refer to the RTU--MP 3rd

Party Integration Guide for additional information.

BACnet MS/TP

1. Verify that the BAS and controller are both set to

speak the BACnet MS/TP protocol. The protocol of

the controller is set via SW3 (switches 3, 4, 5, and 6).

The protocol can also be verified by getting a Modstat

of the controller through the BACview. Hit the “FN”

key and the ’.’ key at the same time to pull up a

Modstat. Scroll to the bottom of the page and there is

a section entitled “Network Communications.” The

active protocol and baud rate will be shown in this

section.

2. Verify that the BAS and controller are set for the

same baud rate. The baud rate of the controller is set

via SW3 (switches 1 and 2). The baud rate can also

be verified via the BACview by obtaining a Modstat.

(See Fig. 59.)

3. Verify that the BAS is configured to speak 2--wire

EIA--485 to the controller. The BAS may have to

configure jumper or DIP switches on their end.

4. Verify that the BAS and the controller have the same

communication settings (8 data bits, No Parity, and 1

stop bit).

5. Verify that the controller has a unique MAC address

on the MS/TP bus. The controller’s MS/TP MAC

address is set by its rotary address switches.

6. Verify proper wiring between the BAS and the

controller.

7. Verify that the BAS is reading or writing to the proper

BACnet objects in the controller. Download the latest

points list for the controller to verify.

8. Verify that the BAS is sending his requests to the

proper MS/TP MAC address of our controller.

9. Present the BAS company with a copy of our

controller’s BACnet PICS so that they know which

BACnet commands are supported.

580J

48

Device Instance: 0160001

1 PRGs loaded. 1 PRGs running.

Module status:

Firmware sections validated in flash memory

============================================

Boot16-H - v2.06:001 Jun 19 2007

RTU-MP DRIVER - v2.09:050 Jun 26 2007

Reset counters:

11 Power failures

0 Brownouts

18 Commanded warm boots

22 Commanded cold boots

0 System errors

0 Watchdog timeouts

System error message history: Type Specific

Warning message history:

Information message history:

POWERUP: BACnet reinitialize warmstart 06/29/07 10:49:40

Menu file not found. 06/29/07 10:48:35

ARC156 reconfigurations during the last hour (cleared upon reset):

Total ....................... 0

Initiated by this node ...... 0

Core board hardware:

Type=147, board=34, manufactured on 05/14/2007, S/N 21A740188N

RAM: 1024 kBytes; FLASH: 1024 kBytes, type = 3

Base board hardware:

Type=147, board=71, manufactured on 05/14/2007, S/N RMP750037N

Largest free heap space = 65536.

Database size = 742082 , used = 352162, free = 389920.

Raw physical switches: 0x01280000

Module Communications:

Network Protocol=BACnet MSTP Master

Network Baud Rate=9600 bps

C07195

Fig. 59 -- Module Status Report (Modstat) Example

10. In certain situations, it may be necessary to tweak the

MS/TP Protocol timing settings through the

BACview6. There are two settings that may be

tweaked:

SMax Masters: Defines the highest MS/TP Master

MAC address on this MS/TP network. For example, if

there are 3 master nodes on an MS/TP network, and

their MAC addresses are 1, 8, and 16, then Max

Masters would be set to 16 (since this is the highest

MS/TP MAC address on the network). This property

optimizes MS/TP network communications by

preventing token passes and “poll for master” requests

to non--existent Master nodes (i.e., in the above

example, MAC address 16 would know to pass the

token back to MAC address 1 instead of counting up to

MAC address 127).

Each MS/TP master node on the network must have

their Max Masters set to this same value. The default is

127.

SMaxInfo Frames: This property defines the maximum

number of responses that will be sent when our

controller gets the token. A valid number is any

positive integer. The default is 10 and should be ideal

for the majority of applications. In cases where the

controller is the target of many requests, this number

could be increased as high as 100 or 200.

NOTE: MS/TP networks can be comprised of both

Master and Slave nodes. Valid MAC addresses for Master

nodes are 0 -- 127 and valid addresses for Slave nodes are

0 -- 254.

NOTE: See RTU--MP 3rd Party Integration Guide (or

alternatively RTU--MP Controls, Start--Up, Operation, and

Troubleshooting Instructions (Form 48--50H--T--2T)

Appendix) for Protocol Maps.

580J

49

Table 19 – Manufacture Date

When troubleshooting, you may need to know a control module’s manufacture date

Obtain the manufacture date from

a...

Notes

Module status report (modstat) To obtain a modstat with BACview6:

1. Press Function (FN) key and hold.

2. Then press period (.)

3. Release both buttons.

ThereportshowsthedateunderMain board hardware.

Sticker on the back of the main control

module board

”Serial No: RMPYMxxxxN”

(Bar Coded & Typed Number)

The serial numbers are unique and contain embedded information:

“RMP” --- These first three digits are unique to RTU--- MP and are used as an identifier.

“YM” --- These two digits identify the last digit of the year and month (in hex, A=10/Oct)

of manufacture. ”74” would represent a date of manufacture of ”April 2007”.

“xxxx” --- These four digits represent the sequential number of units produced for a given

product for the mentioned manufacturing time period.

“N” --- This final digit represents the decade and toggles between ”N” and ”M” every

ten years.

Table 20 – Basic Protocol Troubleshooting

Problem Possible cause Corrective action

No communication with 3rd

party vendor

Incorrect settings on SW1, SW2 and SW3 Verify and correct switch settings. Cycle

powertoRTU---MPafterchangingswitch

settings.

RS485 Port has no voltage output Verify RTU--- MP has correct power supply

(check with RTU---MP disconnected from RS485

communication bus)

Possible bad driver on board.

Bacnet @ 9600/19.2K --- .01 to .045vdc Check RS485 bus for external before

reconnecting to the bus

Bacnet @ 38.4K --- .06 to .09vdc Voltage, shorts or grounding

Bacnet @ 76.8K --- .1vdc before reconnecting to the bus

Modbus @ 9600 --- 76.8K --- .124vdc

N2 @ 9600 --- .124vdc

Verify devices are daisy chained and repeaters and bias

terminators are correctly installed

Check 3rd party vendor RS485

communication wiring guidelines and

troubleshooting procedures

Table 21 – Modbus Exception Codes that May be

Returned From This Controller

CODE NAME MEANING

01 Illegal Function

The Modbus function code used

in the query is not supported by

the controller.

02 Illegal Data Address

The register address used in the

query is not supported by the

controller.

04 SlaveDeviceFailure

The Modbus Master has

attempted to write to a

non--- existent register or a

read--- only register in the

controller.

Modbus

1. Verify that the BAS and controller are both set to

speak the Modbus RTU protocol. The protocol of the

controller is set via SW3 (switches 3, 4, 5, and 6).

The protocol can also be verified by getting a Modstat

of the controller through the BACview. Hit the ”FN”

key and the ’.’ key at the same time to pull up a

Modstat. Scroll to the bottom of the page and there is

a section entitled “Network Communications.” The

active protocol and baud rate will be shown in this

section.

2. Verify that the BAS and controller are set for the

same baud rate. The baud rate of the controller is set

via SW3 (switches 1 and 2). The baud rate can also

be verified via the BACview by obtaining a Modstat

(See Fig. 59).

3. Verify that the BAS is configured to speak 2--wire

EIA--485 to the controller. The BAS may have to

configure jumper or DIP switches on their end.

4. Verify that the BAS and the controller have the same

communication settings (8 data bits, No Parity, and 1

stop bit).

5. Verify that the controller has a unique Modbus slave

address. The controller’s Modbus slave address is set

by its rotary address switches.

6. Verify that the BAS is using the proper Modbus

function codes to access data from our controller.

Supported function codes are shown above.

7. Verify proper wiring between the BAS and the

controller.

8. Verify that the BAS is reading or writing to the proper

Modbus register numbers on the controller. Download

the latest points list for the controller to verify.

9. Verify that the BAS is sending his requests to the

proper slave address of our controller.

580J

50

NOTE: See RTU--MP 3rd Party Integration Guide (or

alternatively RTU--MP 3rd Party Integration Guide (or

alternatively RTU--MP Controls, Start--Up, Operation, and

Troubleshooting Instructions (Form 48--50H--T--2T),

Appendix) for Modbus Protocol Conformance Statement.

N2

1. Verify that the BAS and controller are both set to

speak the N2 protocol. The protocol of the controller

is set via SW3 (switches 3, 4, 5, and 6). The protocol

can also be verified by getting a Modstat of the

controller through the BACview. Hit the “FN” key

and the ’.’ key at the same time to pull up a Modstat.

Scroll to the bottom of the page and there is a section

entitled ”Network Communications.” The active

protocol and baud rate will be shown in this section.

2. Verify that the BAS and controller are set for 9600

baud. The baud rate of the controller is set via SW3

(switches 1 and 2). The baud rate can also be verified

via the BACview by obtaining a Modstat. (See Fig.

59.)

3. Verify that the BAS is configured to speak 2--wire

EIA--485 to the controller. The BAS may have to

configure jumper or DIP switches on their end.

4. Verify that the BAS and the controller have the same

communication settings (8 data bits, No Parity, and 1

stop bit).

5. Verify that the controller has a unique N2 slave

address on the N2 bus. The controller’s N2 slave

address is set by its rotary address switches.

6. Verify proper wiring between the BAS and the

controller.

7. Verify that the BAS is reading or writing to the proper

network point addresses on the controller. Download

the latest points list for the controller to verify.

8. Verify that the BAS is sending his requests to the

proper slave address of our controller.

NOTE: See RTU--MP 3rd Party Integration Guide (or

alternatively RTU--MP 3rd Party Integration Guide (or

alternatively RTU--MP Controls, Start--Up, Operation, and

Troubleshooting Instructions (Form 48--50H--T--2T)

Appendix) for N2 Protocol Conformance Statement.

ECONOMI$ER SYSTEMS

The 580J units may be equipped with a factory--installed

or accessory (field--installed) economizer system. Two

types are available: with a logic control system

(EconoMi$er IV) and without a control system

(EconoMi$er2, for use with external control systems). See

Fig. 60 and Fig. 61 for component locations on each type.

See Fig. 62 and Fig. 63 for economizer section wiring

diagrams.

Both EconoMi$ers use direct--drive damper actuators.

ECONOMI$ER IV

CONTROLLER

WIRING

HARNESS

ACTUATOR

(HIDDEN)

LOW TEMPERATURE

COMPRESSOR

LOCKOUT SWITCH

OUTSIDE AIR

TEMPERATURE SENSOR

(OPERATING LOCATION)

C07367

Fig. 60 -- EconoMi$er IV Component Locations

ECONOMI$ER2

PLUG

BAROMETRIC

RELIEF

DAMPER

OUTDOOR

AIR HOOD

HOOD

SHIPPING

BRACKET

GEAR DRIVEN

DAMPER

C06022

Fig. 61 -- EconoMi$er2 Component Locations

580J

51

C09023

Fig. 62 -- EconoMi$er IV Wiring

4

3

5

2

8

6

7

1

10

11

9

12

PINK

VIOLET

BLACK

BLUE

YELLOW

NOTE 1

NOTE 3

RUN

500 OHM

RESISTOR

50HJ540573

ACTUATOR

ASSEMBLY

RED

WHITE

ECONOMISER2 PLUG

DIRECT DRIVE

ACTUATOR 4-20mA SIGNAL

OAT SENSOR 24 VAC

TRANSFORMER

GROUND

NOTES:

1. Switch on actuator must be in run position for economizer to operate.

50HJ540573 actuator consists of the 50HJ540567 actuator and a harness with 500-ohm resistor.

2.

Fig. 63 -- EconoMi$er2 with 4 to 20 mA Control Wiring

C09223

580J

52

Table 22 – EconoMi$er IV Input/Output Logic

INPUTS OUTPUTS

Demand Control

Ventilation (DCV)

Enthalpy*

Y1 Y2

Compressor NTerminal†

Outdoor Return Stage

1

Stage

2

Occupied Unoccupied

Damper

Below set

(DCV LED Off)

High

(Free Cooling LED

Off)

Low

On On On On

Minimum position ClosedOn Off On Off

Off Off Off Off

Low

(Free Cooling LED

On)

High

On On On Off Modulating** (between

min. position and

full-open)

Modulating**

(between closed and

full-open)

On Off Off Off

Off Off Off Off Minimum position Closed

Above set

(DCV LED On)

High

(Free Cooling LED

Off)

Low

On On On On Modulating†† (between

min. position and DCV

maximum)

Modulating††

(between closed and

DCV

maximum)

On Off On Off

Off Off Off Off

Low

(Free Cooling LED

On)

High

On On On Off

Modulating*** Modulating†††On Off Off Off

Off Off Off Off

* For single enthalpy control, the module compares outdoor enthalpy to the ABCD setpoint.

† Power at N terminal determines Occupied/Unoccupied setting: 24 vac (Occupied), no power (Unoccupied).

** Modulation is based on the supply-air sensor signal.

†† Modulation is based on the DCV signal.

*** Modulation is based on the greater of DCV and supply-air sensor signals, between minimum position and either maximum position (DCV)

or fully open (supply-air signal).

††† Modulation is based on the greater of DCV and supply-air sensor signals, between closed and either maximum position (DCV) or fully

open (supply-air signal).

C06053

Fig. 64 -- EconoMi$er IV Functional View

EconoMi$er IV

Table 22 provides a summary of EconoMi$er IV.

Troubleshooting instructions are enclosed.

A functional view of the EconoMi$er is shown in Fig. 64.

Typical settings, sensor ranges, and jumper positions are

also shown. An EconoMi$er IV simulator program is

available from Bryant to help with EconoMi$er IV

training and troubleshooting.

EconoMi$er IV Standard Sensors

Outdoor Air Temperature (OAT) Sensor

The outdoor air temperature sensor (HH57AC074) is a 10

to 20 mA device used to measure the outdoor-air

temperature. The outdoor-air temperature is used to

determine when the EconoMi$er IV can be used for free

cooling. The sensor is factory-installed on the

EconoMi$er IV in the outdoor airstream. (See Fig. 60.)

The operating range of temperature measurement is 40_to

100_F(4_to 38_C). (See Fig. 67.)

580J

53

Supply Air Temperature (SAT) Sensor

The supply air temperature sensor is a 3 K thermistor

located at the inlet of the indoor fan. (See Fig. 65.) This

sensor is factory installed. The operating range of

temperature measurement is 0°to 158_F(--18_to 70_C).

See Table 16 for sensor temperature/resistance values.

SUPPLY AIR

TEMPERATURE

SENSOR

MOUNTING

LOCATION

SUPPLY AIR

TEMPERATURE

SENSOR

C06033

Fig. 65 -- Supply Air Sensor Location

The temperature sensor looks like an eyelet terminal with

wires running to it. The sensor is located in the “crimp

end” and is sealed from moisture.

Outdoor Air Lockout Sensor

The EconoMi$er IV is equipped with an ambient

temperature lockout switch located in the outdoor

airstream which is used to lock out the compressors below

a42_F(6_C) ambient temperature. (See Fig. 60.)

EconoMi$er IV Control Modes

IMPORTANT: The optional EconoMi$er2 does not

include a controller. The EconoMi$er2 is operated by a 4

to 20 mA signal from an existing field-supplied controller.

See Fig. 63 for wiring information.

Determine the EconoMi$er IV control mode before set up

of the control. Some modes of operation may require

different sensors. (See Table 22.) The EconoMi$er IV is

supplied from the factory with a supply-air temperature

sensor and an outdoor-air temperature sensor. This allows

for operation of the EconoMi$er IV with outdoor air dry

bulb changeover control. Additional accessories can be

added to allow for different types of changeover control

and operation of the EconoMi$er IV and unit.

Outdoor Dry Bulb Changeover

The standard controller is shipped from the factory

configured for outdoor dry bulb changeover control. The

outdoor air and supply air temperature sensors are

included as standard. For this control mode, the outdoor

temperature is compared to an adjustable setpoint selected

on the control. If the outdoor-air temperature is above the

setpoint, the EconoMi$er IV will adjust the outside air

dampers to minimum position. If the outdoor-air

temperature is below the setpoint, the position of the

outside air dampers will be controlled to provided free

cooling using outdoor air. When in this mode, the LED

next to the free cooling setpoint potentiometer will be on.

The changeover temperature setpoint is controlled by the

free cooling setpoint potentiometer located on the control.

(See Fig. 66.)

The scale on the potentiometer is A, B, C, and D. See Fig.

63 for the corresponding temperature changeover values.

C06034

Fig. 66 -- EconoMi$er IV Controller Potentiometer

and LED Locations

LED ON

LED ON

LED ON

LED ON

LED OFF

19

18

LED OFF

LED OFF

LED OFF

17

16

15

14

13

12

11

10

9

40 45 50 55 60 65 70 75 80 85 90 95 100

DEGREES FAHRENHEIT

mA

D

C

B

A

C06035

Fig. 67 -- Outside Air Temperature Changeover

Setpoints

0

5

10

15

20

25

30

0.13 0.20 0.22 0.25 0.30 0.35 0.40 0.45 0.50

STATIC PRESSURE (in. wg)

FLOW IN CUBIC FEET PER MINUTE (cfm)

C06031

Fig. 68 -- Outdoor--Air Damper Leakage

580J

54

Differential Dry Bulb Control

For differential dry bulb control the standard outdoor dry

bulb sensor is used in conjunction with an additional

accessory dry bulb sensor (part number

CRTEMPSN002A00). The accessory sensor must be

mounted in the return airstream. (See Fig. 69.) Wiring is

provided in the EconoMi$er IV wiring harness. (See Fig.

62.)

ECONOMI$ERIV

ECONOMI$ERIV

CONTROLLER

GROMMET

RETURN AIR

SENSOR

RETURN DUCT

(FIELD-PROVIDED)

C07085

Fig. 69 -- Return Air Temperature or Enthalpy Sensor

Mounting Location

In this mode of operation, the outdoor-air temperature is

compared to the return-air temperature and the lower

temperature airstream is used for cooling. When using this

mode of changeover control, turn the enthalpy setpoint

potentiometer fully clockwise to the D setting. (See Fig.

66.)

Outdoor Enthalpy Changeover

For enthalpy control, accessory enthalpy sensor (part

number HH57AC078) is required. Replace the standard

outdoor dry bulb temperature sensor with the accessory

enthalpy sensor in the same mounting location. (See Fig.

69.) When the outdoor air enthalpy rises above the

outdoor enthalpy changeover setpoint, the outdoor-air

damper moves to its minimum position. The outdoor

enthalpy changeover setpoint is set with the outdoor

enthalpy setpoint potentiometer on the EconoMi$er IV

controller. The setpoints are A, B, C, and D. (See Fig. 70.)

The factory-installed 620-ohm jumper must be in place

across terminals SRand SR+ on the EconoMi$er IV

controller.

CONTROL

CURVE

A

B

C

D

CONTROL POINT

APPROX.

deg. F (deg. C)

AT 50% RH

73 (23)

70 (21)

67 (19)

63 (17)

12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46

90

100

80

70

60

50

40

30

20

10

ENTHALPY BTU PER POUND DRY AIR

85

(29)

90

(32)

95

(35)

100

(38)

105

(41)

110

(43)

35

(2)

35

(2)

40

(4)

40

(4)

105

(41)

110

(43)

45

(7)

45

(7)

50

(10)

50

(10)

55

(13)

55

(13)

60

(16)

60

(16)

65

(18)

65

(18)

70

(21)

70

(21)

75

(24)

75

(24)

80

(27)

80

(27)

85

(29)

90

(32)

95

(35)

100

(38)

A

A

B

B

C

C

D

D

RELATIVE HUMIDITY (%)

HIGH LIMIT

CURVE

APPROXIMATE DRY BULB TEMPERATURE--degrees F (degrees C)

C06037

Fig. 70 -- Enthalpy Changeover Setpoints

580J

55

TR1

24 Vac

COM

TR

24

Va c

HOT

12

34

5

EF EF1

+_

P1

T1

P

T

N

EXH

2V 10V

EXH

Set

Set

2V 10V

2V 10V

DCV

DCV

Free

Cool

BC

AD

SO+

SR+

SR

SO

AQ1

AQ

DCV

Min

Pos

Open

Max

N1

C06038

Fig. 71 -- EconoMi$er IV Control

Differential Enthalpy Control

For differential enthalpy control, the EconoMi$er IV

controller uses two enthalpy sensors (HH57AC078 and

CRENTDIF004A00), one in the outside air and one in the

return air duct. The EconoMi$er IV controller compares

the outdoor air enthalpy to the return air enthalpy to

determine EconoMi$er IV use. The controller selects the

lower enthalpy air (return or outdoor) for cooling. For

example, when the outdoor air has a lower enthalpy than

the return air, the EconoMi$er IV opens to bring in

outdoor air for free cooling.

Replace the standard outside air dry bulb temperature

sensor with the accessory enthalpy sensor in the same

mounting location. (See Fig. 60.) Mount the return air

enthalpy sensor in the return air duct. (See Fig. 69.)

Wiring is provided in the EconoMi$er IV wiring harness.

(See Fig. 62.) The outdoor enthalpy changeover setpoint is

set with the outdoor enthalpy setpoint potentiometer on

the EconoMi$er IV controller. When using this mode of

changeover control, turn the enthalpy setpoint

potentiometer fully clockwise to the D setting.

Indoor Air Quality (IAQ) Sensor Input

The IAQ input can be used for demand control ventilation

control based on the level of CO2measured in the space

or return air duct.

There is both a factory-installed (FIOP) CO2option

(sensor 8001B with no display, which is mounted on the

side of the EconoMi$er) and a field-installed CO2option

(sensor 8002 with display, which is mounted on the return

air duct). While performing the same function, they differ

in their ability to be configured. The FIOP version is

preset and requires no changes in most applications. If a

configuration change is required, service kit #UIP2072

(software CD, cables, and instructions) and a laptop PC

are required. The field-installed version with display can

be configured stand-alone. (See section “CO2Sensor

Configuration”).

Mount the accessory IAQ sensor according to

manufacturer specifications. The IAQ sensor should be

wired to the AQ and AQ1 terminals of the controller.

Adjust the DCV potentiometers to correspond to the DCV

voltage output of the indoor air quality sensor at the

user-determined setpoint. (See Fig. 72.)

0

1000

2000

3000

4000

5000

6000

2345678

800 ppm

900 ppm

1000 ppm

1100 ppm

RANGE CONFIGURATION (ppm)

DAMPER VOLTAGE FOR MAX VENTILATION RATE

CO SENSOR MAX RANGE SETTING

2

C06039

Fig. 72 -- CO2Sensor Maximum Range Settings

If a separate field-supplied transformer is used to power

the IAQ sensor, the sensor must not be grounded or the

EconoMi$er IV control board will be damaged.

When using demand ventilation, the minimum damper

position represents the minimum ventilation position for

VOC (volatile organic compounds) ventilation

requirements. The maximum demand ventilation position

is used for fully occupied ventilation.

When demand ventilation control is not being used, the

minimum position potentiometer should be used to set the

occupied ventilation position. The maximum demand

ventilation position should be turned fully clockwise.

Exhaust Setpoint Adjustment

The exhaust setpoint will determine when the exhaust fan

runs based on damper position (if accessory power

exhaust is installed). The setpoint is modified with the

Exhaust Fan Setpoint (EXH SET) potentiometer. (See Fig.

66.) The setpoint represents the damper position above

which the exhaust fans will be turned on. When there is a

call for exhaust, the EconoMi$er IV controller provides a

45 ±15 second delay before exhaust fan activation to

allow the dampers to open. This delay allows the damper

to reach the appropriate position to avoid unnecessary fan

overload.

Minimum Position Control

There is a minimum damper position potentiometer on the

EconoMi$er IV controller. (See Fig. 66.) The minimum

damper position maintains the minimum airflow into the

building during the occupied period.

When using demand ventilation, the minimum damper

position represents the minimum ventilation position for

VOC (volatile organic compound) ventilation

requirements. The maximum demand ventilation position

is used for fully occupied ventilation.

When demand ventilation control is not being used, the

minimum position potentiometer should be used to set the

occupied ventilation position. The maximum demand

ventilation position should be turned fully clockwise.

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56

Adjust the minimum position potentiometer to allow the

minimum amount of outdoor air, as required by local

codes, to enter the building. Make minimum position

adjustments with at least 10_F temperature difference

between the outdoor and return-air temperatures.

To determine the minimum position setting, perform the

following procedure:

1. Calculate the appropriate mixed air temperature

using the following formula:

(TOx

OA )+(TRxRA )=T

M

100 100

TO= Outdoor-Air Temperature

OA = Percent of Outdoor Air

TR= Return-Air Temperature

RA = Percent of Return Air

TM= Mixed-Air Temperature

As an example, if local codes require 10% outdoor

air during occupied conditions, outdoor-air

temperature is 60_F, and return-air temperature is

75_F.

(60 x .10) + (75 x .90) = 73.5_F

2. Disconnect the supply air sensor from terminals T

and T1.

3. Ensure that the factory-installed jumper is in place

across terminals P and P1. If remote damper

positioning is being used, make sure that the

terminals are wired according to Fig. 62 and that the

minimum position potentiometer is turned fully

clockwise.

4. Connect 24 vac across terminals TR and TR1.

5. Carefully adjust the minimum position

potentiometer until the measured mixed air

temperature matches the calculated value.

6. Reconnect the supply air sensor to terminals T and

T1.

Remote control of the EconoMi$er IV damper is desirable

when requiring additional temporary ventilation. If a

field-supplied remote potentiometer (Honeywell part

number S963B1128) is wired to the EconoMi$er IV

controller, the minimum position of the damper can be

controlled from a remote location.

To control the minimum damper position remotely,

remove the factory-installed jumper on the P and P1

terminals on the EconoMi$er IV controller. Wire the

field-supplied potentiometer to the P and P1 terminals on

the EconoMi$er IV controller. (See Fig. 62.)

Damper Movement

Damper movement from full open to full closed (or vice

versa) takes 2-1/2minutes.

Thermostats

The EconoMi$er IV control works with conventional

thermostats that have a Y1 (cool stage 1), Y2 (cool stage

2), W1 (heat stage 1), W2 (heat stage 2), and G (fan). The

EconoMi$er IV control does not support space

temperature sensors. Connections are made at the

thermostat terminal connection board located in the main

control box.

Demand Control Ventilation (DCV)

When using the EconoMi$er IV for demand controlled

ventilation, there are some equipment selection criteria

which should be considered. When selecting the heat

capacity and cool capacity of the equipment, the

maximum ventilation rate must be evaluated for design

conditions. The maximum damper position must be

calculated to provide the desired fresh air.

Typically the maximum ventilation rate will be about 5 to

10% more than the typical cfm required per person, using

normal outside air design criteria.

A proportional anticipatory strategy should be taken with

the following conditions: a zone with a large area, varied

occupancy, and equipment that cannot exceed the required

ventilation rate at design conditions. Exceeding the

required ventilation rate means the equipment can

condition air at a maximum ventilation rate that is greater

than the required ventilation rate for maximum

occupancy. A proportional-anticipatory strategy will cause

the fresh air supplied to increase as the room CO2level

increases even though the CO2setpoint has not been

reached. By the time the CO2level reaches the setpoint,

the damper will be at maximum ventilation and should

maintain the setpoint.

In order to have the CO2sensor control the economizer

damper in this manner, first determine the damper voltage

output for minimum or base ventilation. Base ventilation

is the ventilation required to remove contaminants during

unoccupied periods. The following equation may be used

to determine the percent of outside air entering the

building for a given damper position. For best results there

should be at least a 10 degree difference in outside and

return-air temperatures.

(TOx

OA )+(TRxRA )=T

M

100 100

TO= Outdoor-Air Temperature

OA = Percent of Outdoor Air

TR= Return-Air Temperature

RA = Percent of Return Air

TM= Mixed-Air Temperature

Once base ventilation has been determined, set the

minimum damper position potentiometer to the correct

position.

580J

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The same equation can be used to determine the occupied

or maximum ventilation rate to the building. For example,

an output of 3.6 volts to the actuator provides a base

ventilation rate of 5% and an output of 6.7 volts provides

the maximum ventilation rate of 20% (or base plus 15 cfm

per person). Use Fig. 72 to determine the maximum

setting of the CO2sensor. For example, an 1100 ppm

setpoint relates to a 15 cfm per person design. Use the

1100 ppm curve on Fig. 72 to find the point when the CO2

sensor output will be 6.7 volts. Line up the point on the

graph with the left side of the chart to determine that the

range configuration for the CO2sensor should be 1800

ppm. The EconoMi$er IV controller will output the 6.7

volts from the CO2sensor to the actuator when the CO2

concentration in the space is at 1100 ppm. The DCV

setpoint may be left at 2 volts since the CO2sensor

voltage will be ignored by the EconoMi$er IV controller

until it rises above the 3.6 volt setting of the minimum

position potentiometer.

Once the fully occupied damper position has been

determined, set the maximum damper demand control

ventilation potentiometer to this position. Do not set to the

maximum position as this can result in over-ventilation to

the space and potential high humidity levels.

CO2Sensor Configuration

The CO2sensor has preset standard voltage settings that

can be selected anytime after the sensor is powered up.

(See Table 23.)

Use setting 1 or 2 for Bryant equipment. (See Table 23.)

1. Press Clear and Mode buttons. Hold at least 5

seconds until the sensor enters the Edit mode.

2. Press Mode twice. The STDSET Menu will appear.

Table23–CO

2Sensor Standard Settings

SETTING EQUIPMENT OUTPUT

VENTILATION

RATE

(cfm/Person)

ANALOG

OUTPUT

CO2

CONTROL

RANGE

(ppm)

OPTIONAL

RELAY SETPOINT

(ppm)

RELAY

HYSTERESIS

(ppm)

1

Interface w/Standard

Building Control System

Proportional Any 0 --- 1 0 V

4 --- 2 0 m A 0---2000 1000 50

2Proportional Any 2 --- 1 0 V

7 --- 2 0 m A 0---2000 1000 50

3Exponential Any 0 --- 1 0 V

4 --- 2 0 m A 0---2000 1100 50

4

Economizer

Proportional 15 0 --- 1 0 V

4 --- 2 0 m A 0---1100 1100 50

5Proportional 20 0 --- 1 0 V

4 --- 2 0 m A 0 --- 9 0 0 900 50

6Exponential 15 0 --- 1 0 V

4 --- 2 0 m A 0---1100 1100 50

7Exponential 20 0 --- 1 0 V

4 --- 2 0 m A 0 --- 9 0 0 900 50

8Health & Safety Proportional —0 --- 1 0 V

4 --- 2 0 m A 0---9999 5000 500

9Parking/Air Intakes/

Loading Docks Proportional —0 --- 1 0 V

4 --- 2 0 m A 0---2000 700 50

580J

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Table 24 – EconoMi$er IV Sensor Usage

APPLICATION

ECONOMI$ER IV WITH OUTDOOR AIR DRY

BULB SENSOR

Accessories Required

Outdoor Air

Dry Bulb

None. The outdoor air dry bulb sensor is

factory installed.

Differential

Dry Bulb CRTEMPSN002A00*

Single Enthalpy HH57AC078

Differential

Enthalpy HH57AC078 and CRENTDIF004A00*

CO2for DCV

Control using a

Wall-Mounted

CO2Sensor

33ZCSENCO2

CO2for DCV

Control using a

Duct-Mounted

CO2Sensor

33ZCSENCO2† and

33ZCASPCO2**

O

RCRCBDIOX005A00††

* CRENTDIF004A00 and CRTEMPSN002A00 accessories are

used on many different base units. As such, these kits may

contain parts that will not be needed for installation.

† 33ZCSENCO2 is an accessory CO2sensor.

** 33ZCASPCO2 is an accessory aspirator box required for

duct-mounted applications.

†† CRCBDIOX005A00 is an accessory that contains both

33ZCSENCO2 and 33ZCASPCO2 accessories.

3. Use the Up/Down button to select the preset

number. (See Table 23.)

4. Press Enter to lock in the selection.

5. Press Mode to exit and resume normal operation.

The custom settings of the CO2sensor can be changed

anytime after the sensor is energized. Follow the steps

below to change the non-standard settings:

1. Press Clear and Mode buttons. Hold at least 5

seconds until the sensor enters the Edit mode.

2. Press Mode twice. The STDSET Menu will appear.

3. Use the Up/Down button to toggle to the NONSTD

menu and press Enter.

4. Use the Up/Down button to toggle through each of

the nine variables, starting with Altitude, until the

desired setting is reached.

5. Press Mode to move through the variables.

6. Press Enter to lock in the selection, then press Mode

to continue to the next variable.

Dehumidification of Fresh Air with DCV (Demand

Controlled Ventilation) Control

If normal rooftop heating and cooling operation is not

adequate for the outdoor humidity level, an energy

recovery unit and/or a dehumidification option should be

considered.

EconoMi$er IV Preparation

This procedure is used to prepare the EconoMi$er IV for

troubleshooting. No troubleshooting or testing is done by

performing the following procedure.

NOTE: This procedure requires a 9--v battery, 1.2

kilo--ohm resistor, and a 5.6 kilo--ohm resistor which are

not supplied with the EconoMi$er IV.

IMPORTANT: Be sure to record the positions of all

potentiometers before starting troubleshooting.

1. Disconnect power at TR and TR1. All LEDs should

be off. Exhaust fan contacts should be open.

2. Disconnect device at P and P1.

3. Jumper P to P1.

4. Disconnect wires at T and T1. Place 5.6 kilo--ohm

resistor across T and T1.

5. Jumper TR to 1.

6. Jumper TR to N.

7. If connected, remove sensor from terminals SO and +.

Connect 1.2 kilo--ohm 4074EJM checkout resistor

across terminals SO and +.

8. Put 620--ohm resistor across terminals SR and +.

9. Set minimum position, DCV setpoint, and exhaust

potentiometers fully CCW (counterclockwise).

10. Set DCV maximum position potentiometer fully CW

(clockwise).

11. Set enthalpy potentiometer to D.

12. Apply power (24 vac) to terminals TR and TR1.

Differential Enthalpy

To check differential enthalpy:

1. Make sure EconoMi$er IV preparation procedure has

been performed.

2. Place 620--ohm resistor across SO and +.

3. Place 1.2 kilo--ohm resistor across SR and +. The

Free Cool LED should be lit.

4. Remove 620--ohm resistor across SO and +. The Free

Cool LED should turn off.

5. Return EconoMi$er IV settings and wiring to normal

after completing troubleshooting.

Single Enthalpy

To check single enthalpy:

1. Make sure EconoMi$er IV preparation procedure has

been performed.

2. Set the enthalpy potentiometer to A (fully CCW). The

Free Cool LED should be lit.

3. Set the enthalpy potentiometer to D (fully CW). The

Free Cool LED should turn off.

4. Return EconoMi$er IV settings and wiring to normal

after completing troubleshooting.

DCV (Demand Controlled Ventilation) and Power

Exhaust

To check DCV and Power Exhaust:

1. Make sure EconoMi$er IV preparation procedure has

been performed.

2. Ensure terminals AQ and AQ1 are open. The LED for

both DCV and Exhaust should be off. The actuator

should be fully closed.

3. Connect a 9--v battery to AQ (positive node) and AQ1

(negative node). The LED for both DCV and Exhaust

should turn on. The actuator should drive to between

90 and 95% open.

4. Turn the Exhaust potentiometer CW until the Exhaust

LED turns off. The LED should turn off when the

potentiometer is approximately 90%. The actuator

should remain in position.

580J

59

5. Turn the DCV setpoint potentiometer CW until the

DCV LED turns off. The DCV LED should turn off

when the potentiometer is approximately 9--v. The

actuator should drive fully closed.

6. Turn the DCV and Exhaust potentiometers CCW until

the Exhaust LED turns on. The exhaust contacts will

close 30 to 120 seconds after the Exhaust LED turns

on.

7. Return EconoMi$er IV settings and wiring to normal

after completing troubleshooting.

DCV Minimum and Maximum Position

To check the DCV minimum and maximum position:

1. Make sure EconoMi$er IV preparation procedure has

been performed.

2. Connect a 9--v battery to AQ (positive node) and AQ1

(negative node). The DCV LED should turn on. The

actuator should drive to between 90 and 95% open.

3. Turn the DCV Maximum Position potentiometer to

midpoint. The actuator should drive to between 20

and 80% open.

4. Turn the DCV Maximum Position potentiometer to

fully CCW. The actuator should drive fully closed.

5. Turn the Minimum Position potentiometer to

midpoint. The actuator should drive to between 20

and 80% open.

6. Turn the Minimum Position Potentiometer fully CW.

The actuator should drive fully open.

7. Remove the jumper from TR and N. The actuator

should drive fully closed.

8. Return EconoMi$er IV settings and wiring to normal

after completing troubleshooting.

Supply--Air Sensor Input

To check supply--air sensor input:

1. Make sure EconoMi$er IV preparation procedure has

been performed.

2. Set the Enthalpy potentiometer to A. The Free Cool

LED turns on. The actuator should drive to between

20 and 80% open.

3. Remove the 5.6 kilo--ohm resistor and jumper T to

T1. The actuator should drive fully open.

4. Remove the jumper across T and T1. The actuator

should drive fully closed.

5. Return EconoMi$er IV settings and wiring to normal

after completing troubleshooting.

EconoMi$er IV Troubleshooting Completion

This procedure is used to return the EconoMi$er IV to

operation. No troubleshooting or testing is done by

performing the following procedure.

1. Disconnect power at TR and TR1.

2. Set enthalpy potentiometer to previous setting.

3. Set DCV maximum position potentiometer to

previous setting.

4. Set minimum position, DCV setpoint, and exhaust

potentiometers to previous settings.

5. Remove 620--ohm resistor from terminals SR and +.

6. Remove 1.2 kilo--ohm checkout resistor from

terminals SO and +. If used, reconnect sensor from

terminals SO and +.

7. Remove jumper from TR to N.

8. Remove jumper from TR to 1.

9. Remove 5.6 kilo--ohm resistor from T and T1.

Reconnect wires at T and T1.

10. Remove jumper from P to P1. Reconnect device at P

and P1.

11. Apply power (24 vac) to terminals TR and TR1.

WIRING DIAGRAMS

See Fig. 73 and 74 for typical wiring diagrams.

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C09156

Fig. 73 -- 580J Typical Unit Wiring Diagram -- Power (08D,F, 208/230--3--60)

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C09157

Fig. 74 -- 580J Typical Unit Wiring Diagram -- Control (08--12D,F, 208/230--3--60)

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PRE--START--UP

PERSONAL INJURY HAZARD

Failure to follow this warning could result in personal

injury or death.

1. Follow recognized safety practices and wear

protective goggles when checking or servicing

refrigerant system.

2. Do not operate compressor or provide any electric

power to unit unless compressor terminal cover is

in place and secured.

3. Do not remove compressor terminal cover until

all electrical sources are disconnected.

4. Relieve all pressure from system before touching

or disturbing anything inside terminal box if

refrigerant leak is suspected around compressor

terminals.

5. Never attempt to repair soldered connection while

refrigerant system is under pressure.

6. Do not use torch to remove any component.

System contains oil and refrigerant under

pressure. To remove a component, wear

protective goggles and proceed as follows:

a. Shut off electrical power and then gas to unit.

b. Recover refrigerant to relieve all pressure from

system using both high--pressure and low

pressure ports.

c. Cut component connection tubing with tubing

cutter and remove component from unit.

d. Carefully unsweat remaining tubing stubs

when necessary. Oil can ignite when exposed

to torch flame.

!WARNING

ELECTRICAL OPERATION HAZARD

Failure to follow this warning could result in personal

injury or death.

The unit must be electrically grounded in accordance

with local codes and NEC ANSI/NFPA 70 (American

National Standards Institute/National Fire Protection

Association).

!WARNING

Proceed as follows to inspect and prepare the unit for

initial start--up:

1. Remove all access panels.

2. Read and follow instructions on all WARNING,

CAUTION, and INFORMATION labels attached to,

or shipped with, unit.

PERSONAL INJURY AND ENVIRONMENTAL

HAZARD

Failure to follow this warning could result in personal

injury or death.

Relieve pressure and recover all refrigerant before

system repair or final unit disposal.

Wear safety glasses and gloves when handling

refrigerants.

Keep torches and other ignition sources away from

refrigerants and oils.

!WARNING

3. Make the following inspections:

a. Inspect for shipping and handling damages such

as broken lines, loose parts, or disconnected

wires, etc.

b. Inspect for oil at all refrigerant tubing

connections and on unit base. Detecting oil

generally indicates a refrigerant leak. Leak--test

all refrigerant tubing connections using

electronic leak detector, halide torch, or

liquid--soap solution.

c. Inspect all field--wiring and factory--wiring

connections. Be sure that connections are

completed and tight. Be sure that wires are not

in contact with refrigerant tubing or sharp edges.

d. Inspect coil fins. If damaged during shipping and

handling, carefully straighten fins with a fin

comb.

4. Verify the following conditions:

a. Make sure that condenser--fan blade are correctly

positioned in fan orifice. See Condenser--Fan

Adjustment section for more details.

b. Make sure that air filter(s) is in place.

c. Make sure that condensate drain trap is filled

with water to ensure proper drainage.

d. Make sure that all tools and miscellaneous loose

parts have been removed.

START--UP, GENERAL

Unit Preparation

Make sure that unit has been installed in accordance with

installation instructions and applicable codes.

Gas Piping

Check gas piping for leaks.

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UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could result in personal

injury or death.

Disconnect gas piping from unit when leak testing at

pressure greater than 1/2 psig. Pressures greater than

1/2 psig will cause gas valve damage resulting in

hazardous condition. If gas valve is subjected to

pressure greater than 1/2 psig, it must be replaced

before use. When pressure testing field--supplied gas

piping at pressures of 1/2 psig or less, a unit connected

to such piping must be isolated by manually closing

the gas valve.

!WARNING

Return--Air Filters

Make sure correct filters are installed in unit (see

Appendix II -- Physical Data). Do not operate unit without

return--air filters.

Outdoor--Air Inlet Screens

Outdoor--air inlet screen must be in place before operating

unit.

Compressor Mounting

Compressors are internally spring mounted. Do not loosen

or remove compressor hold down bolts.

Internal Wiring

Check all factory and field electrical connections for

tightness. Tighten as required.

Refrigerant Service Ports

Each unit system has two 1/4” SAE flare (with check

valves) service ports: one on the suction line, and one on

the compressor discharge line. Be sure that caps on the

ports are tight.

Compressor Rotation

On 3--phase units with scroll compressors, it is important

to be certain compressor is rotating in the proper

direction. To determine whether or not compressor is

rotating in the proper direction:

1. Connect service gauges to suction and discharge

pressure fittings.

2. Energize the compressor.

3. The suction pressure should drop and the discharge

pressure should rise, as is normal on any start--up.

If the suction pressure does not drop and the discharge

pressure does not rise to normal levels:

1. Note that the evaporator fan is probably also rotating

in the wrong direction.

2. Turn off power to the unit and install lockout tag.

3. Reverse any two of the unit power leads.

4. Re--energize to the compressor. Check pressures.

The suction and discharge pressure levels should now

move to their normal start--up levels.

NOTE: When the compressor is rotating in the wrong

direction, the unit will make an elevated level of noise

and will not provide cooling.

Cooling

Set space thermostat to OFF position. To start unit, turn on

main power supply. Set system selector switch at COOL

position and fan switch at AUTO. position. Adjust

thermostat to a setting approximately 5_F(3_C) below

room temperature. Both compressors start on closure of

contactors.

Check unit charge. Refer to Refrigerant Charge section.

Reset thermostat at a position above room temperature.

Both compressors will shut off. Evaporator fan will shut

off immediately.

To shut off unit, set system selector switch at OFF

position. Resetting thermostat at a position above room

temperature shuts unit off temporarily until space

temperature exceeds thermostat setting.

Main Burners

Main burners are factory set and should require no

adjustment.

To check ignition of main burners and heating controls,

move thermostat setpoint above room temperature and

verify that the burners light and evaporator fan is

energized. Check heating effect, then lower the thermostat

setting below the room temperature and verify that the

burners and evaporator fan turn off.

Refer to Table 11 for the correct orifice to use at high

altitudes.

Heating

1. Purge gas supply line of air by opening union ahead

of the gas valve. If gas odor is detected, tighten union

and wait 5 minutes before proceeding.

2. Turn on electrical supply and manual gas valve.

3. Set system switch selector at HEAT position and fan

switch at AUTO. or ON position. Set heating

temperature lever above room temperature.

4. The induced--draft motor will start.

5. After a call for heating, the main burners should light

within 5 seconds. If the burner does not light, then

there is a 22--second delay before another 5--second

try. If the burner still does not light, the time delay is

repeated. If the burner does not light within 15

minutes, there is a lockout. To reset the control, break

the 24 v power to W1.

6. The evaporator--fan motor will turn on 45 seconds

after burner ignition.

7. The evaporator--fan motor will turn off in 45 seconds

after the thermostat temperature is satisfied.

8. Adjust airflow to obtain a temperature rise within the

range specified on the unit nameplate.

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NOTE: The default value for the evaporator--fan motor

on/off delay is 45 seconds. The Integrated Gas Unit

Controller (IGC) modifies this value when abnormal limit

switch cycles occur. Based upon unit operating conditions,

the on delay can be reduced to 0 seconds and the off delay

can be extended to 180 seconds.

If the limit switch trips at the start of the heating cycle

during the evaporator on delay, the time period of the on

delay for the next cycle will be 5 seconds less than the

time at which the switch tripped. (Example: If the limit

switch trips at 30 seconds, the evaporator--fan on delay for

the next cycle will occur at 25 seconds.) To prevent

short--cycling, a 5--second reduction will only occur if a

minimum of 10 minutes has elapsed since the last call for

heating.

The evaporator--fan off delay can also be modified. Once

the call for heating has ended, there is a 10--minute period

during which the modification can occur. If the limit

switch trips during this period, the evaporator--fan off

delay will increase by 15 seconds. A maximum of 9 trips

can occur, extending the evaporator-fan off delay to 180

seconds.

To restore the original default value, reset the power to the

unit.

To shut off unit, set system selector switch at OFF

position. Resetting heating selector lever below room

temperature will temporarily shut unit off until space

temperature falls below thermostat setting.

Ventilation (Continuous Fan)

Set fan and system selector switches at ON and OFF

positions, respectively. Evaporator fan operates

continuously to provide constant air circulation. When the

evaporator-fan selector switch is turned to the OFF

position, there is a 30--second delay before the fan turns

off.

START--UP, RTU--MP CONTROL

Field Service Test, explained below, will assist in proper

start--up. Configuration of unit parameters, scheduling

options, and operation are also discussed in this section.

Field Service Test

The Field Service Test function can be used to verify

proper operation of compressors, heating stages, indoor

fan, power exhaust fans, economizer, and

dehumidification. Use of Field Service Test is

recommended at initial system start up and during

troubleshooting. See RTU--MP Controls, Start--Up,

Operation, and Troubleshooting Instructions (Form

48--50H--T--2T), Appendix A for Field Service Test Mode

table.

Field Service Test mode has the following changes from

normal operation:

SOutdoor air temperature limits for cooling circuits,

economizer, and heating are ignored.

SNormal compressor time guards and other staging delays

are ignored.

SThe status of Alarms (except Fire and Safety chain) is

ignored but all alerts and alarms are still broadcasted on

the network.

Field Service Test can be turned ON/OFF at the unit

display or from the network. Once turned ON, other

entries may be made with the display or through the

network. To turn Field Service Test on, change the value

of Test Mode to ON, to turn Field Service Test off, change

the value of Test Mode to OFF.

NOTE: Service Test mode is password protected when

accessing from the display. Depending on the unit model,

factory--installed options, and field--installed accessories,

some of the Field Service Test functions may not apply.

The independent outputs (IndpOutputs) submenu is used

to change output status for the supply fan, economizer,

and Power Exhaust. These independent outputs can

operate simultaneously with other Field Service Test

modes. All outputs return to normal operation when Field

Service Test is turned off.

The Cooling submenu is used to change output status for

the individual compressors and the dehumidification relay.

Compressor starts are not staggered. The fans and heating

service test outputs are reset to OFF for the cooling

service test. Indoor fans and outdoor fans are controlled

normally to maintain proper unit operation. All normal

cooling alarms and alerts are functional.

NOTE: Circuit A is always operated with Circuit B due

to outdoor fan control on Circuit A. Always test Circuit A

first, and leave it on to test other Circuits.

The Heating submenu is used to change output status for

the individual heat stages, gas or electric. The fans and

cooling service test outputs are reset to OFF for the

heating service test. All normal heating alarms and alerts

are functional.

Configuration

The RTU--MP controller configuration points affect the

unit operation and/or control. Review and understand the

meaning and purpose of each configuration point before

changing it from the factory default value. The submenus

containing configuration points are as follows: Unit,

Cooling, Heating, Inputs, Economizer, IAQ, Clock--Set,

and User Password (USERPW). Each configuration point

is described below under its according submenu. See

RTU--MP Controls, Start--Up, Operation, and

Troubleshooting Instructions (Form 48--50H--T--2T),

Appendix for display tables.

Unit

Start Delay

This refers to the time delay the unit will wait after power

up before it pursues any specific operation.

Factory Default = 5 sec

Range = 0--600 sec

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Filter Service Hours

This refers to the timer set for the Dirty Filter Alarm.

After the number of runtime hours set on this point is

exceeded the corresponding alarm will be generated, and

must be manually cleared on the alarm reset screen after

the maintenance has been completed. The timer will then

begin counting its runtime again for the next maintenance

interval.

Factory Default = 600 hr

NOTE: Setting this configuration timer to 0, disables the

alarm.

Supply Fan Service Hours

This refers to the timer set for the Supply Fan Runtime

Alarm. After the number of runtime hours set on this point

is exceeded the corresponding alarm will be generated,

and must be manually cleared on the alarm reset screen

after the maintenance has been completed. The timer will

then begin counting its runtime again for the next

maintenance interval.

Factory Default = 0 hr

NOTE: Setting this configuration timer to 0, disables the

alarm.

Compressor1 Service Hours

This refers to the timer set for the Compressor 1 Runtime

Alarm. After the number of runtime hours set on this point

is exceeded the corresponding alarm will be generated,

and must be manually cleared on the alarm reset screen

after the maintenance has been completed. The timer will

then begin counting its runtime again for the next

maintenance interval.

Factory Default = 0 hr

NOTE: Setting this configuration timer to 0, disables the

alarm.

Compressor2 Service Hours

This refers to the timer set for the Compressor 2 Runtime

Alarm. After the number of hours set on this point is

exceeded the corresponding alarm will be generated, and

must be manually cleared on the alarm rest screen after

the maintenance has been completed. The timer will then

begin counting its runtime again for the next maintenance

interval

Factory Default = 0 hr

NOTE: Setting this configuration timer to 0, disables the

alarm.

Cooling

Number of Compressor Stages

This refers to the number of mechanical cooling stages

available on a specific unit. Set this point to “One Stage”

if there is one compressor in the specific unit, set to “Two

Stage” if there are two compressors in the unit, and set to

“None” if economizer cooling ONLY is desired.

Factory Default = One Stage for 1 compressor units

Two Stage for 2 compressor units

Cooling/Econ SAT Low Setpt

The supply air temperature must remain above this value

to allow cooling with the economizer and/or compressors.

There is 5_F plus and minus deadband to this point. If the

SAT falls below this value during cooling, all compressors

will be staged off. The economizer will start to ramp

down to minimum position when the SAT = this

configuration +5_F.

Factory Default = 50_F

Range = 45--75_F

Cooling Lockout Temp

This defines the minimum outdoor air temperature that

cooling mode can be enabled and run. If the OAT falls

below this threshold during cooling, then compressor

cooling will not be allowed.

Factory Default = 45_F

Range = 0--65_F

Heating

Heating SAT High Setpt

The supply air temperature must remain below this value

to allow heating. There is 5_F plus and minus deadband to

this point. If the SAT rises above this value during heating

the heat stages will begin to decrease until the SAT has

dropped below this value.

Factory Default = 120_F

Range = 95--150_F

Heating Lockout Temp

This defines the maximum outdoor air temperature that

heating mode can be enabled and run. If the OAT rises

above this threshold during heating, then heating will not

be allowed.

Factory Default = 65_F

Range = 49--95_F

Inputs

NOTE: For installation of inputs and field installed

accessories, refer to the appropriate sections.

Input 3

This input is a discrete input and can be configured to be

one of five different inputs: No Function, Compressor

Safety, Fan Status, Filter Status, or Remote Occupancy.

This input can also be configured to be either Normally

Open (N/O) or Normally Closed (N/C). Input 3 is factory

wired to pin J1--2. Field accessories get wired to its

parallel pin J5--5. Do not connect inputs to both locations,

one function per input.

Factory Default = Compressor Safety and N/O

NOTE: Compressor Safety input comes from the CLO

board. J1--2 is always factory wired to TB1--8 (X) terminal

on the unit. If the unit has a CLO board, do not configure

input 3 for anything but Compressor Safety.

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Input 5

This input is a discrete input and can be configured to be

one of five different inputs: No Function, Fire Shutdown,

Fan Status, Filter Status, or Remote Occupancy. This

input can also be configured to be either Normally Open

(N/O) or Normally Closed (N/C). Input 5 is factory wired

to pin J1--10. Field accessories get wired to its parallel pin

J5--3. Do not connect inputs to both locations, one

function per input.

Factory Default = Fire Shutdown and N/C

NOTE: Fire Shutdown input comes from TB4--7. J1--10

is always factory wired to TB4--7. Only change input 5s

function if absolutely needed.

Input 8

This input is a discrete input and can be configured to be

one of five different inputs: No Function, Enthalpy

Switch, Fan Status, Filter Status, or Remote Occupancy.

This input can also be configured to be either Normally

Open (N/O) or Normally Closed (N/C). Input 8 is factory

wired to pin J2--6. Field accessories get wired to its

parallel pin J5--1. Do not connect inputs to both locations,

one function per input.

Factory Default = No Function and N/O

Input 9

This input is a discrete input and can be configured to be

one of five different inputs: No Function, Humidistat, Fan

Status, Filter Status, or Remote Occupancy. This input can

also be configured to be either Normally Open (N/O) or

Normally Closed (N/C). Input 9 is factory and field wired

to pin J5--7. Do not connect inputs to both locations, one

function per input.

Factory Default = Humidistat and N/O

Space Sensor Type

This tells the controller what type of space sensor is

installed to run the unit. The three types that can be used

are the T55 space sensor, the T56 space sensor, or the RS

space sensor.

Factory Default = T55 Type

Input 1 Function

This input is an analog input and can be configured to be

one of five different inputs: No Sensor, IAQ Sensor, OAQ

Sensor, Space RH Sensor, or Outdoor RH Sensor. Input 1

iswiredtopinJ4--5.

Factory Default = No Sensor

Input 2 Function

This input is an analog input and can be configured to be

one of five different inputs: No Sensor, IAQ Sensor, OAQ

Sensor, Space RH Sensor, or Outdoor RH Sensor. Input 2

iswiredtopinJ4--2.

Factory Default = No Sensor

Setpoint Slider Range

This sets the slider range of the space sensor (with this

built in function). The slider is used to offset the current

control setpoint.

Factory Default = 5 n_F

Range = 0--15 n_F

T55/56 Override Duration

This sets the occupancy override duration when the

override button is pushed on the space sensor.

Factory Default = 1 hr

Range = 0--24 hr

IAQ Low Reference @ 4mA

This is used when an IAQ sensor is installed on Input 1 or

2. This value is displayed and used when 4mA is seen at

the input.

Factory Default = 0 PPM

Range = 0--400 PPM

IAQ High Reference @ 20mA

This is used when an IAQ sensor is installed on Input 1 or

2. This value is displayed and used when 20mA is seen at

the input.

Factory Default = 2000 PPM

Range = 0--5000 PPM

NOTE: IAQ low Reference @ 4mA and IAQ High

Reference @ 20mA are used to set the linear curve of mA

vs. PPM.

OAQ Low Reference @ 4mA

This is used when an OAQ sensor is installed on Input 1

or 2. This value is displayed and used when 4mA is seen

at the input.

Factory Default = 0 PPM

Range = 0--400 PPM

OAQ High Reference @ 20mA

This is used when an OAQ sensor is installed on Input 1

or 2. This value is displayed and used when 20mA is seen

at the input.

Factory Default = 2000 PPM

Range = 0--5000 PPM

NOTE: OAQ low Reference @ 4mA and OAQ High

Reference @ 20mA are used to set the linear curve of mA

vs. PPM.

Economizer

Economizer Exists

This point tells the controller if there is an economizer

installed on the unit.

Factory Default = NO if no economizer

YES if there is an economizer installed

Economizer Minimum Position

This defines the lowest economizer position when the

indoor fan is running and the building is occupied.

Factory Default = 20%

Range = 0--100 %

Economizer High OAT Lockout

If the outdoor air temperature rises above this value,

economizer cooling will be disabled and dampers will

return and stay at minimum position.

Factory Default = 75_F

Range = 55--80_F

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Power Exhaust Setpt

When the economizer damper position opens above this

point the power exhaust operation will begin. When the

damper position falls 10% below the setpoint, the power

exhaust will shutdown.

Factory Default = 50%

Range = 20--90 %

NOTE: This point is only used when Continuous Occ

Exhaust = NO

Continuous Occ Exhaust

This point tells the controller when to run the power

exhaust if equipped on the unit. If set to YES, the power

exhaust will be on all the time when in occupied mode

and will be off when in unoccupied mode. If set to NO the

power exhaust will be controlled by the Power Exhaust

Setpoint.

Factory Default = NO

IAQ

Max Differential CO2Setpt

If the difference between indoor an outdoor air quality

becomes greater then this value the damper position will

stay at the IAQ Greatest Min Dmpr Pos. configuration

point

Factory Default = 650 PPM

Range = 300--950 PPM

IAQ Greatest Min Dmpr Pos.

This is the greatest minimum position the economizer will

open to while trying to control the indoor air quality, CO2

differential.

Factory Default = 50% open

Range = 10--60% open

Clockset

This submenu screen allows you to set the date and time

manually. The Daylight Savings Time (DST) can also be

changed here. The date and time is automatically set when

ever software is downloaded. The clock is a 24 hour clock

and not am/pm. The time should be verified (and maybe

changed) according to unit location and time zone.

Factory Default = Eastern Standard Time

USERPW

This submenu screen allows you to change the user

password to a four number password of choice. The User

password change screen is only accessible with the

Administrator Password (1111). The ADMIN password

will always override the user password.

OPERATING SEQUENCES

Base Unit Controls

Cooling, Units Without Economizer

When thermostat calls for Stage 1 cooling, terminals G

and Y1 are energized. The indoor--fan contactor (IFC),

outdoor fan contactor (OFC) and Compressor 1 contactor

(C1) are energized and indoor-fan motor, outdoor fan and

Compressor 1 start. The outdoor fan motor runs

continuously while unit is in Stage 1 or Stage 2 cooling.

(08D,F and 12D,F units have two outdoor fans; both run

while unit is in Stage 1 or Stage 2 cooling.)

If Stage 1 cooling does not satisfy the space load, the

space temperature will rise until thermostat calls for Stage

2 cooling (Y2 closes). Compressor 2 contactor (C2) is

energized; Compressor 2 starts and runs.

Heating, Units Without Economizer

When the thermostat calls for heating, terminal W1 is

energized. To prevent thermostat short-cycling, the unit is

locked into the Heating mode for at least 1 minute when

W1 is energized. The induced-draft motor is energized

and the burner ignition sequence begins. The indoor

(evaporator) fan motor (IFM) is energized 45 seconds

after a flame is ignited.

If Stage 1 heating does not satisfy the space load, the

space temperature will fall until thermostat calls for Stage

2 heating (W2 closes). Terminal W2 is energized and the

high-fire solenoid on the main gas valve (MGV) is

energized. Firing rate increases to high-fire. When space

load is partially satisfied, terminal W2 is de--energized;

the high-fire solenoid is de--energized and heating

operation continues on low--fire.

When the space heating load is fully satisfied, thermostat

terminal W1 is also deenergized. All heating operations

cease. The IFM stops after a 45-second time off delay.

Cooling, Unit With EconoMi$er IV

For Occupied mode operation of EconoMi$er IV, there

must be a 24-v signal at terminals TR and N (provided

through PL6-3 from the unit’s IFC coil). Removing the

signal at N places the EconoMi$er IV control in

Unoccupied mode.

During Occupied mode operation, indoor fan operation

will be accompanied by economizer dampers moving to

Minimum Position setpoint for ventilation. If indoor fan is

off, dampers will close. During Unoccupied mode

operation, dampers will remain closed unless a Cooling

(by free cooling) or DCV demand is received.

When free cooling using outside air is not available, the

unit cooling sequence will be controlled directly by the

space thermostat as described above as Cooling, Unit

Without Economizer. Outside air damper position will be

closed or Minimum Position as determined by occupancy

mode and fan signal.

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When free cooling is available as determined by the

appropriate changeover command (dry bulb, outdoor

enthalpy, differential dry bulb or differential enthalpy), a

call for cooling (Y1 closes at the thermostat) will cause

the economizer control to modulate the dampers open and

closed to maintain the unit supply air temperature at 50 to

55_F. Compressor will not run.

During free cooling operation, a supply air temperature

(SAT) above 50_F will cause the dampers to modulate

between Minimum Position setpoint and 100% open. With

SAT from 50_Fto45_F, the dampers will maintain at the

Minimum Position setting. With SAT below 45_F, the

outside air dampers will be closed. When SAT rises to

48_F, the dampers will re-open to Minimum Position

setting.

Should 100% outside air not be capable of satisfying the

space temperature, space temperature will rise until Y2 is

closed. The economizer control will call for compressor

operation. Dampers will modulate to maintain SAT at 50

to 55_F concurrent with Compressor 1 operation. The

Low Ambient Lockout Thermostat will block compressor

operation with economizer operation below 42_F outside

air temperature.

When space temperature demand is satisfied (thermostat

Y1 opens), the dampers will return to Minimum Damper

position if indoor fan is running or fully closed if fan is

off.

If accessory power exhaust is installed, the power exhaust

fan motors will be energized by the economizer control as

the dampers open above the PE-On setpoint and will be

de--energized as the dampers close below the PE-On

setpoint.

Damper movement from full closed to full open (or vice

versa) will take between 1-1/2 and 2-1/2 minutes.

Heating With EconoMi$er IV

During Occupied mode operation, indoor fan operation

will be accompanied by economizer dampers moving to

Minimum Position setpoint for ventilation. If indoor fan is

off, dampers will close. During Unoccupied mode

operation, dampers will remain closed unless a DCV

demand is received.

When the room temperature calls for heat (W1 closes), the

heating controls are energized as described in Heating,

Unit Without Economizer above.

Demand Controlled Ventilation

If a field-installed CO2sensor is connected to the

Economize IV control, a Demand Controlled Ventilation

strategy will operate automatically. As the CO2 level in

the space increases above the setpoint (on the EconoMi$er

IV controller), the minimum position of the dampers will

be increased proportionally, until the Maximum

Ventilation setting is reached. As the space CO2level

decreases because of the increase in fresh air, the

outdoor-damper will follow the higher demand condition

from the DCV mode or from the free-cooling mode.

DCV operation is available in Occupied and Unoccupied

periods with EconoMi$er IV. However, a control

modification will be required on the 580J unit to

implement the Unoccupied period function.

Supplemental Controls

Compressor Lockout Relay (CLO) -- The CLO is available

as a factory-installed option or as a field--installed

accessory. Each compressor has a CLO. The CLO

compares the demand for compressor operation (via a

24-v input from Y at CLO terminal 2) to operation of the

compressor (determined via compressor current signal

input at the CLO’s current transformer loop); if the

compressor current signal is lost while the demand input

still exists, the CLO will trip open and prevent the

compressor from restarting until the CLO has been

manually reset. In the lockout condition, 24-v will be

available at terminal X. Reset is accomplished by

removing the input signal at terminal 2; open the

thermostat briefly or cycle the main power to the unit.

Phase Monitor Relay (PMR) -- The PMR protects the unit

in the event of a loss of a phase or a reversal of power line

phase in the three--phase unit power supply. In normal

operation, the relay K1 is energized (contact set closed)

and red LED indicator is on steady. If the PMR detects a

loss of a phase or a phase sequence reversal, the relay K1

is energized, its contact set is opened and unit operation is

stopped; red LED indicator will blink during lockout

condition. Reset of the PMR is automatic when all phases

are restored and phase sequence is correct. If no 24--v

control power is available to the PMR, the red LED will

be off. Smoke Detectors -- Factory--installed smoke

detectors are discussed in detail starting on page 17.

RTU--MP Sequence of Operation

The RTU--MP will control the compressor, economizer

and heating outputs based on its own space temperature

input and setpoints. An optional CO2IAQ sensor mounted

in the space can influence the economizer minimum

position. The RTU--MP has its own hardware clock that is

set automatically when the software is installed on the

board. The RTU--MP’s default is to control to occupied

setpoints all the time, until a type of occupancy control is

set. Occupancy types are described in the scheduling

section. The following sections describe the operation for

the functions of the RTU--MP. All point objects that are

referred to in this sequence will be in reference to the

objects as viewed in BACview6Handheld.

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Scheduling

Scheduling is used to start heating or cooling (become

occupied) based upon a day of week and a time period and

control to the occupied heating or cooling setpoints.

Scheduling functions are located under occupancy

determination and the schedule menu accessed by the

Menu softkey (see Appendix -- for menu structure). Your

local time and date should be set for these functions to

operate properly. Five scheduling functions are available

by changing the Occupancy Source to one of the

following selections:

Always Occupied (Default Occupancy)

The unit will run continuously. RTU--MP ships from the

factory with this setting.

Local Schedule

The unit will operate according to the schedule configured

and stored in the unit. The local schedule is made up of

three hierarchy levels that consist of two Override

schedules, twelve Holiday and four Daily schedules, and

are only accessible by the BACview screen (handheld or

virtual).

The Daily schedule is the lowest schedule in the hierarchy

and is overridden by both the Holiday and Override

schedule. It consists of a start time, a stop time (both in 24

hour mode) and the seven days of the week, starting with

Monday and ending in Sunday. To select a daily schedule

scroll to the Schedules menu off of the Menu selection.

Enter the User password and change the Occupancy

Source to Local Schedule. Scroll down and over to the

Daily menu and press enter. Choose one of the four Daily

schedules by pressing the Next softkey and change the

Use? point from NO to YES by selecting the point and

pressing the INCR or DECR softkey. Press the OK softkey

and scroll to the start and stop times. Edit these times

following the same steps as the Use? point. Finally scroll

down to the Days: section and highlight the days required

for the Daily schedule by INCR or DECR softkeys and

press OK softkey.

The Holiday schedule is created to override the Daily

schedule and identify a specific day and month of the year

to start and stop the unit and change control to the

unoccupied heating and cooling setpoints. Follow the

same steps to turn on one of the twelve Holiday schedules

and start and stop times. Next, select one out of the twelve

months and one out of the thirty--one days of that month.

The RTU--MP will now ignore the Daily schedule for the

specific day and time you selected and follow the Holiday

Schedule for this period.

The Override schedules primary purpose is to provide a

temporary change in the occupied heating and cooling

setpoints and force the unit to control to the unoccupied

heating and cooling setpoints. This would occur on a set

day in a particular month and last during the start and stop

time configured. The Override schedule is enabled by

following the same steps to create the Holiday schedule.

NOTE: Push button override is only available when

running a local or BACnet Schedule.

BACnet Schedule

For use with a Building Automation System that supports

native BACnet scheduling is scheduling the unit. With the

Occupancy Source set to BACnet schedule the BAS will

control the unit through network communication and it’s

own scheduling function.

BAS On/Off

The Building Automation System is scheduling the unit

via an On/Off command to the BAS ON/OFF software

point. The Building Automation System can be speaking

BACnet, Modbus, or N2 and is writing to the BAS On/Off

point in the open protocol point map.

NOTE: If the BAS supports NATIVE BACnet

scheduling, then set the Occupancy Source to BACnet

schedule. If the BAS is BACnet but does NOT support

NATIVE BACnet scheduling, then set the Occupancy

Source to BAS On/Off.

DI On/Off

A hard--wired input on the RTU--MP will command the

unit to start/stop. Inputs 3, 5, 8, and 9 on plug J5 can be

hard--wired to command the unit to start/stop.

NOTE: Scheduling can either be controlled via the unit

or the BAS, but NOT both.

Indoor Fan

The indoor fan will be turned on whenever any one of the

following conditions is true:

SIt is in the occupied mode. This will be determined by its

own internal occupancy schedule.

SWhenever there is a demand for cooling or heating in the

unoccupied mode.

SWhenever the remote occupancy switch is closed during

DI On/Off schedule type or if occupancy is forced

occupied by the BAS during BAS On/Off schedule type.

When transitioning from unoccupied to occupied, there

will be a configured time delay of 5 to 600 seconds before

starting the fan. The fan will continue to run as long as

compressors, heating stages, or the dehumidification

relays are on when transitioning from occupied to

unoccupied with the exception of Shutdown mode. If Fire

Shutdown, safety chain, SAT alarm or SPT alarm are

active; the fan will be shutdown immediately regardless of

the occupancy state or demand.

The RTU--MP has an optional Supply Fan Status input to

provide proof of airflow. If this is enabled, the point will

look for a contact closure whenever the Supply Fan Relay

is on. If it is not enabled then it will always be the same

state as the Supply Fan Relay. The cooling, economizer,

heating, dehumidification, CO2and power exhaust

routines will use this input point for fan status.

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Cooling

The compressor outputs are controlled by the Cooling

Control PID Loop and Cooling Stages Capacity algorithm.

They will be used to calculate the desired number of

stages needed to satisfy the space by comparing the Space

Temperature (SPT) to the Occupied Cool Setpoint plus the

T56 slider offset when occupied and the Unoccupied Cool

Setpoint (UCSP) plus the T56 slider offset, if unoccupied.

The economizer, if available, will be used for cooling in

addition to the compressors. The following conditions

must be true in order for this algorithm to run:

SIndoor Fan has been ON for at least 30 seconds.

SHeat mode is not active and the time guard between

modes equals zero.

SIf occupied and the SPT >(occupied cool setpoint plus

the T56 slider offset).

SSpace Temperature reading is available.

SIf it is unoccupied and the SPT > (unoccupied cool

setpoint plus the T56 slider offset). The indoor fan will be

turned on by the staging algorithm.

SIf economizer is available and active and economizer

open > 85% and SAT > (SAT low limit + 5_F) and SPT >

effective setpoint + 0.5_F.

OR

Economizer is available, but not active

OR

Economizer is not available

SOAT > DX Lockout temperature.

If all of the above conditions are met, the compressors

will be energized as required, otherwise they will be

de--energized.

There is a fixed 3--minute minimum on time and a

5--minute off time for each compressor output and a

3--minute minimum time delay between staging up or

down.

Any time the compressors are running the RTU--MP will

stage down the compressors if the SAT becomes less than

the cooling low supply air setpoint.

After a compressor is staged off, it may be started again

after a normal time--guard period and the supply air

temperature has increased above the low supply air

setpoint.

Economizer

The Economizer dampers are used to provide free cooling

and Indoor Air Quality, if optional CO2sensor is installed,

when the outside conditions are suitable.

The following conditions must be true for economizer

operation:

SIndoor Fan has been on for at least 30 seconds.

SEnthalpy is Low if the Enthalpy input is enabled.

SSAT reading is available.

SOAT reading is available.

SSPT reading is available.

SOAT <= High OAT economizer lockout configuration

(default = 75).

SOAT <= SPT

If any of the mentioned conditions are not true, the

economizer will be set to its configured minimum

position. The minimum damper position can be

overridden by the IAQ routine described later in this

section.

If the above conditions are true, the Economizer Control

Master Loop will calculate a damper position value based

on the following calculation:

Damper Position = minimum position + PID (SPT -- econ

setpoint). Econ setpoint is half way between the effective

cool and heat setpoints. If the SAT drops below the

cooling low supply air setpoint (+ 5_F), the economizer

will ramp down to minimum position.

Power Exhaust

If RTU--MP is also controlling an exhaust fan, it can be

enabled based on damper position or by occupancy. If

configured for continuous occupied operation, it will be

energized whenever the controller is in the occupied mode

and disabled when in the unoccupied mode. If configured

for damper position control, it will be energized whenever

the economizer exceeds the power exhaust setpoint and

disabled when the economizer drops below the setpoint by

a fixed hysteresis of 10%.

Heating

The heating outputs are controlled by the Heating Control

PID Loop and Heating Stages Capacity algorithm. They

will be used to calculate the desired number of stages

needed to satisfy the space by comparing the SPT to the

Occupied Heat Setpoint plus the T56 slider offset when

occupied and the Unoccupied Heat Setpoint plus the T56

slider offset if unoccupied. The following conditions must

be true in order for this algorithm to run:

SIndoor Fan has been ON for at least 30 seconds.

SCool mode is not active and the time guard between

modes equals zero.

SIf occupied and SPT <(occupied heat setpoint plus T56

slider offset)

SSPT reading is available

SIf it is unoccupied and the SPT < (unoccupied heat

setpoint plus T56 slider offset). The indoor fan will be

turned on by the staging algorithm.

SOAT <High OAT lockout temperature.

If all of the above conditions are met, the heating outputs

will be energized as required, otherwise they will be

de--energized. If the SAT begins to exceed the high supply

air setpoint, a ramping function will cause the Heat Stages

Capacity algorithm to decrease the number of stages until

the SAT has dropped below the setpoint.

There is a fixed one minute minimum on time and a one

minute off time for each heat output. Heat staging has a 3

minute stage up and 30 second stage down delay.

580J

71

Indoor Air Quality

If the optional indoor air quality sensor is installed, the

RTU--MP will maintain indoor air quality within the space

at the user configured differential setpoint. The setpoint is

the difference between the indoor air quality and an

optional outdoor air quality sensor. If the outdoor air

quality is not present then a fixed value of 400ppm is

used. The following conditions must be true in order for

this algorithm to run:

SThe mode is occupied.

SIndoor Fan has been ON for at least 30 seconds.

SIndoor Air Quality sensor has a valid reading

As air quality within the space changes, the minimum

position of the economizer damper will be changed thus

allowing more or less outdoor air into the space depending

on the relationship of the indoor air quality to the

differential setpoint. If all the above conditions are true,

the IAQ algorithm will run and calculates an IAQ

minimum position value using a PID loop. The IAQ

minimum damper position is then compared against the

user configured economizer minimum position and the

greatest value becomes the final minimum damper

position of the economizer output.

If the calculated IAQ minimum position is greater than

the IAQ maximum damper position configuration then it

will be clamped to the configured value.

Demand Limit

If the RTU--MP receives a level 1 (one degree offset), 2

(two degree offset), or a 3 (4 degree offset) to the BACnet

demand limit variable, the controller will expand the

heating and cooling setpoints by the configured demand

limit setpoint value and remain in effect until the BACnet

demand limit variable receives a 0 value.

FASTENER TORQUE VALUES

See Table 25 for torque values.

Table 25 – Torque Values

Supply fan motor mounting 120 ¦12 in --- lbs 13.5 ¦1.4 Nm

Supply fan motor adjustment plate 120 ¦12 in ---lbs 13.5 ¦1.4 Nm

Motor pulley setscrew 72 ¦5 i n --- l b s 8.1 ¦0.6 Nm

Fan pulley setscrew 72 ¦5 i n --- l b s 8.1 ¦0.6 Nm

Blower wheel hub setscrew 72 ¦5 i n --- l b s 8.1 ¦0.6 Nm

Bearing locking collar setscrew 65 to 70 in---lbs 7.3 to 7.9 Nm

Compressor mounting bolts 65 to 75 in--- lbs 7.3 to 7.9 Nm

Condenser fan motor mounting bolts 20 ¦2 i n --- l b s 2.3 ¦0.2 Nm

Condenser fan hub setscrew 84 ¦1 2 i n --- l b s 9.5 ¦1.4 Nm

580J

72

APPENDIX I. MODEL NUMBER SIGNIFICANCE

Model Number Nomenclature

123456789101112131415161718

5 8 0 J E 0 8 D 1 2 5 A 1 A 0 A A --

____________ ______ ________ ______

Unit Type Design Revision

580J = Cooling/Gas Heat RTU --- = First Revision

Voltage Packaging

E = 4 6 0 --- 3 --- 6 0 A=Standard

P = 208/230--- 3--- 60 B=LTL

T = 5 7 5 --- 3 --- 6 0

Factory Installed Options

Cooling Tons 0A = None

08 = 7.5 Ton

12 = 10 Ton Intake/Exhaust Options

14 = 12.5 Ton A=None

B=Tempeconow/barorelief

Refrig. System/Gas Heat Options E=Tempeconow/barorelief&CO

2

D = 2 --- S t a g e C o m p r e s s o r / A l H X H = Enthalpy econo w/ baro relief

F = 2 --- S t a g e C o m p r e s s o r / S S H X L = Enthalpy econo w/ baro relief & CO2

Q = Motorized 2 pos damper

Heat Level

125 = 125,000 Indoor Fan Options

150 = 150,000 1 = Standard static option

180 = 180,000 2 = Medium static option

224 = 224,000 3 = High static option

250 = 250,000

2 --- S t a g e C o o l i n g C o i l O p t i o n s ( O u t d o o r --- I n d o o r )

G = Al/Al --- Al/ Cu

T = A l / A l --- A l/ C u --- L o u v e r e d H a i l G u a r d s

Serial Number Format

POSITION NUMBER 12345678910

TYPICAL 1209G12345

POSITION DESIGNATES

1--- 2 Week of manufacture (fiscal calendar)

3--- 4 Year of manufacture (“09” = 2009)

5 Manufacturing location (G = ETP, Texas, USA)

6--- 10 Sequential number

580J

73

APPENDIX II. PHYSICAL DATA

Physical Data (Cooling) 7.5 -- 12.5TONS

580J*08D,F 580J*12D,F 580J*14D,F

Refrigeration System

#Circuits/#Comp./Type 2/2/Scroll 2/2/Scroll 2/2/Scroll

PuronRrefrig. (R--- 410A) charge per

c i r c u i t A / B ( l b s --- o z ) 4 --- 6 / 4 --- 6 6 --- 0 / 6 --- 0 7 --- 6 / 8 --- 0

Oil A/B (oz) 42 / 42 42 / 42 56 / 56

Metering Device Accutrol Accutrol Accutrol

High---press. Trip / Reset (psig) 630 / 505 630 / 505 630 / 505

Low---press. Trip / Reset (psig) 54 / 117 54 / 117 54 / 117

Evaporator Coil

Material Cu / Al Cu / Al Cu / Al

Coil type 3/8” RTPF 3/8” RTPF 3/8” RTPF

Rows / FPI 3 / 15 4/15 4/15

To t al Fa c e A r ea ( f t 2)8.9 11.1 11.1

Condensate Drain Conn. Size 3/4” 3/4” 3/4”

Evaporator Fan and Motor

Standard Static

3phase

Motor Qty / Drive Type 1/Belt 1/Belt 1/Belt

Max BHP 1.7 2.4 2.9*

RPM Range 489--- 747 591---838 652--- 843

Motor Frame Size 56 56 56

Fan Qty / Type 1/Centrifugal 1/Centrifugal 1/Centrifugal

Fan Diameter (in) 15 x 15 15 x 15 15 x 15

Medium Static

3phase

Motor Qty / Drive Type 1/Belt 1/Belt 1/Belt

Max BHP 2.9* 3.7 3.7

RPM Range 733--- 949 838---1084 838--- 1084

Motor Frame Size 56 56 56

Fan Qty / Type 1/Centrifugal 1/Centrifugal 1/Centrifugal

Fan Diameter (in) 15 x 15 15 x 15 15 x 15

High Static

3phase

Motor Qty / Drive Type 1/Belt 1/Belt 1/Belt

Max BHP 4.7 4.7 4.7

RPM Range 909---1102 1022--- 1240 1022---1240

Motor Frame Size 145TY 145TY 145TY

Fan Qty / Type 1/Centrifugal 1/Centrifugal 1/Centrifugal

Fan Diameter (in) 15 x 15 15 x 15 15 x 15

Condenser Coil

Material Al / Al Al / Al Al / Al

Coil type NOVATION ™NOVATION ™NOVATION ™

Rows / FPI 1 / 20 1/20 2/20

To t al Fa c e A r ea ( f t 2) 20.5 25.1 25.1

Condenser fan / motor

Qty / Motor Drive Type 2/ Direct 2/Direct 1/ Direct

Motor HP / RPM 1/4 / 1100 1/4 / 1100 1 / 1175

Fan diameter (in) 22 22 30

Filters

RAFilter#/Size(in) 4/16x20x2 4/20x20x2 4/20x20x2

OA inlet screen # / Size (in) 1/20x24x1 1/20x24x1 1/20x24x1

AI / AI: Aluminum Tube / Aluminum Fin

Cu / AI: Copper Tube / Aluminum Fin

RTPF: Round Tube / Plate Fin

*575V motor utilizes 3.7 BHP

580J

74

APPENDIX II. PHYSICAL DATA (cont.)

Physical Data (Heating) 7.5 -- 12.5TONS

580J**08 580J**12 580J**14

Gas Connection

#ofGasValves 111

Nat. gas supply line press (in. w.g.)/(PSIG) 4 --- 1 3 / 0 . 1 8 --- 0 . 4 7 4 --- 1 3 / 0 . 1 8 --- 0 . 4 7 4 --- 1 3 / 0 . 1 8 --- 0 . 4 7

LP supply line press (in. w.g.)/(PSIG) 11--- 13 / 0.40---0.47 11--- 13 / 0.40---0.47 11--- 13 / 0.40---0.47

Heat Anticipator Setting (Amps)

1st stage 0.14 0.14 0.14

2nd stage 0.14 0.14 0.14

Natural Gas Heat, Liquid Propane Heat

#ofstages/#ofburners(total) 1/3 2/4 2/4

LOW

Connection size 1/2” NPT 3/4” NPT 3/4” NPT

Rollout switch opens / Closes 195 / 115 195 / 115 195 / 115

Temperature rise (min/max) 20 --- 50 25 --- 65 25 --- 65

#ofstages/#ofburners(total) 2/4 2/5 2/5

MED

Connection size 3/4” NPT 3/4” NPT 3/4” NPT

Rollout switch opens / Closes 195 / 115 195 / 115 195 / 115

Temperature rise (min/max) 35 --- 65 30 --- 65 25 --- 65

#ofstages/#ofburners(total) 2/5 2/5 2/5

HIGH

Connection Size 3/4” NPT 3/4” NPT 3/4” NPT

Rollout switch opens / Closes 195 / 115 195 / 115 195 / 115

Temperature rise (min/max) 45 --- 75 35 --- 70 35 --- 70

580J

75

APPENDIX III. FAN PERFORMANCE

580J**08 3 PHASE 7.5 TON HORIZONTAL SUPPLY

CFM

AVAILABLEEXTERNALSTATICPRESSURE(in.wg)

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Standard Static Option Medium Static Option

2250 505 0.52 586 0.73 657 0.97 722 1.22 782 1.50

2438 533 0.62 610 0.85 679 1.09 742 1.36 800 1.65

2625 562 0.74 635 0.98 701 1.23 762 1.51 819 1.81

2813 591 0.88 661 1.13 725 1.39 783 1.68 839 1.98

3000 621 1.03 688 1.29 749 1.57 806 1.87 859 2.18

3188 652 1.21 715 1.48 774 1.77 829 2.07 881 2.40

3375 682 1.40 743 1.68 800 1.98 853 2.30 903 2.63

3563 713 1.61 772 1.91 826 2.22 878 2.55 927 2.89

3750 745 1.85 801 2.15 853 2.48 903 2.82 951 3.18

CFM

AVAILABLEEXTERNALSTATICPRESSURE(in.wg)

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Medium Static Option High Static Option

2250 838 1.81 891 2.12 941 2.46 988 2.82 1033 3.19

2438 854 1.96 906 2.28 955 2.63 1001 2.99 1046 3.37

2625 872 2.12 922 2.46 970 2.81 1016 3.17 1060 3.56

2813 890 2.31 940 2.65 986 3.01 1031 3.38 1074 3.77

3000 910 2.51 958 2.86 1004 3.23 1048 3.61 1090 4.01

3188 930 2.74 977 3.10 1022 3.47 1065 3.86 1107 4.261

3375 951 2.99 997 3.35 1041 3.74 1083 4.13 1124 4.54

3563 973 3.26 1018 3.63 1061 4.02 1103 4.43 -- --

3750 996 3.55 1040 3.93 1082 4.34 -- -- -- --

NOTE: For more information, see General Fan Performance Notes.

Boldface indicates field--supplied drive is required.

1. Recommend using field--supplied fan pulley (part no. KR11AZ002) and belt (part no. KR29AF054).

580J**08 3 PHASE 7.5 TON VERTICAL SUPPLY

CFM

AVAILABLEEXTERNALSTATICPRESSURE(in.wg)

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Standard Static Option Medium Static Option

2250 513 0.54 595 0.76 665 1.01 728 1.27 786 1.56

2438 541 0.65 620 0.89 688 1.14 750 1.42 806 1.71

2625 570 0.77 645 1.02 712 1.29 772 1.58 827 1.88

2813 600 0.91 672 1.18 736 1.46 794 1.76 848 2.07

3000 629 1.07 699 1.35 761 1.64 818 1.95 871 2.28

3188 660 1.25 726 1.54 787 1.85 842 2.17 894 2.51

3375 690 1.45 754 1.75 813 2.07 867 2.41 917 2.76

3563 721 1.67 783 1.98 840 2.32 892 2.67 941 3.03

3750 752 1.91 812 2.24 867 2.59 918 2.95 966 3.32

CFM

AVAILABLEEXTERNALSTATICPRESSURE(in.wg)

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Medium Static Option High Static Option

2250 839 1.86 889 2.18 935 2.52 980 2.87 1022 3.23

2438 858 2.02 907 2.35 953 2.70 997 3.06 1039 3.43

2625 878 2.20 926 2.54 972 2.89 1015 3.26 1056 3.64

2813 899 2.40 946 2.75 991 3.11 1033 3.49 1074 3.88

3000 920 2.62 966 2.98 1010 3.35 1052 3.74 1093 4.14

3188 942 2.86 987 3.23 1031 3.61 1072 4.01 1112 4.421

3375 964 3.12 1009 3.50 1052 3.89 1093 4.30 -- --

3563 988 3.41 1032 3.80 1074 4.20 1114 4.61 -- --

3750 1011 3.71 1054 4.11 1096 4.53 -- -- --- ---

NOTE: For more information, see General Fan Performance Notes.

Boldface indicates field--supplied drive is required.

1. Recommend using field--supplied fan pulley (part no. KR11AZ002) and belt (part no. KR29AF054).

580J

76

FAN PERFORMANCE (cont.)

580J**12 3 PHASE 10 TON HORIZONTAL SUPPLY

CFM

AVAILABLEEXTERNALSTATICPRESSURE(in.wg)

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

F i e l d --- S u p p l i e d D r i v e 1Standard Static Option Medium Static Option

3000 579 0.70 660 0.89 732 1.09 799 1.29 860 1.50

3250 613 0.85 690 1.06 760 1.27 823 1.49 883 1.71

3500 648 1.03 721 1.25 788 1.48 850 1.71 907 1.95

3750 683 1.23 753 1.47 817 1.71 877 1.96 933 2.21

4000 719 1.45 786 1.71 848 1.97 905 2.23 959 2.50

4250 756 1.71 819 1.98 879 2.26 934 2.53 987 2.81

4500 792 1.99 853 2.28 910 2.57 964 2.87 1015 3.16

4750 830 2.31 888 2.62 943 2.92 995 3.23 1044 3.54

5000 867 2.66 923 2.98 976 3.30 1026 3.63 1074 3.95

CFM

AVAILABLEEXTERNALSTATICPRESSURE(in.wg)

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Medium Static Option High Static Option

3000 917 1.70 970 1.91 1021 2.13 1070 2.34 1117 2.56

3250 938 1.93 991 2.16 1041 2.38 1089 2.61 1134 2.85

3500 961 2.18 1013 2.42 1062 2.66 1108 2.91 1153 3.15

3750 985 2.46 1035 2.71 1083 2.97 1129 3.23 1173 3.49

4000 1011 2.76 1059 3.03 1106 3.30 1151 3.58 1194 3.85

4250 1037 3.09 1084 3.38 1130 3.66 1174 3.95 1216 4.24

4500 1064 3.46 1110 3.76 1155 4.06 1198 4.36 1239 4.66

4750 1091 3.85 1137 4.16 1180 4.48 -- -- -- --

5000 1120 4.28 1164 4.61 -- -- --- --- --- ---

NOTE: For more information, see General Fan Performance Notes.

Boldface indicates field--supplied drive is required.

1. Recommend using field--supplied fan pulley (part no. KR11AD912) and belt (part no. KR29AF051).

2. Recommend using field--supplied motor pulley (part no. KR11HY410).

580J**12 3 PHASE 10 TON VERTICAL SUPPLY

CFM

AVAILABLEEXTERNALSTATICPRESSURE(in.wg)

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Standard Static Option Medium Static Option

3000 616 0.79 689 0.97 757 1.16 821 1.36 882 1.57

3250 655 0.96 724 1.16 788 1.37 849 1.58 907 1.80

3500 695 1.17 760 1.38 821 1.60 879 1.83 934 2.06

3750 736 1.41 797 1.63 855 1.86 910 2.10 963 2.35

4000 777 1.68 834 1.91 889 2.16 942 2.41 993 2.67

4250 818 1.98 873 2.23 925 2.49 976 2.75 1025 3.02

4500 860 2.32 912 2.58 962 2.85 1010 3.13 1057 3.41

4750 902 2.69 951 2.97 999 3.26 1046 3.55 1091 3.84

5000 944 3.11 991 3.40 1037 3.70 1082 4.00 1125 4.31

CFM

AVAILABLEEXTERNALSTATICPRESSURE(in.wg)

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Medium Static Option High Static Option

3000 939 1.79 994 2.01 1047 2.24 1098 2.47 1147 2.71

3250 962 2.03 1015 2.26 1066 2.50 1115 2.75 1163 3.00

3500 987 2.30 1038 2.54 1088 2.80 1135 3.05 1181 3.32

3750 1014 2.60 1063 2.86 1111 3.12 1157 3.39 1202 3.66

4000 1042 2.93 1090 3.20 1136 3.48 1180 3.76 1224 4.04

4250 1072 3.30 1118 3.58 1162 3.87 1205 4.16 -- --

4500 1103 3.70 1147 4.00 1190 4.29 1232 4.60 -- --

4750 1135 4.14 1177 4.45 -- -- -- -- --- ---

5000 1167 4.63 -- -- --- --- --- --- --- ---

NOTE: For more information, see General Fan Performance Notes.

Boldface indicates field--supplied drive is required.

1. Recommend using field--supplied motor pulley (part no. KR11HY410).

580J

77

580J**14 3 PHASE 12.5 TON HORIZONTAL SUPPLY

CFM

Available External Static Pressure (in. wg)

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Standard Static Option Medium Static Option

3438 639 0.98 713 1.20 781 1.43 843 1.65 901 1.88

3750 683 1.23 753 1.47 817 1.71 877 1.96 933 2.21

4063 728 1.52 794 1.78 855 2.04 912 2.31 966 2.57

4375 774 1.85 836 2.13 894 2.41 949 2.70 1001 2.98

4688 820 2.23 879 2.53 935 2.83 987 3.14 1037 3.44

5000 867 2.66 923 2.98 976 3.30 1026 3.63 1074 3.95

5313 914 3.15 967 3.49 1018 3.83 1066 4.17 1112 4.52

5625 962 3.69 1012 4.05 1061 4.42 -- -- -- --

5938 1009 4.30 1058 4.68 -- -- -- -- -- --

6250 -- -- -- -- -- -- -- -- -- --

CFM

Available External Static Pressure (in. wg)

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Medium Static Option High Static Option

3438 955 2.12 1007 2.35 1056 2.59 1103 2.83 1148 3.08

3750 985 2.46 1035 2.71 1083 2.97 1129 3.23 1173 3.49

4063 1017 2.84 1066 3.12 1112 3.39 1157 3.67 1200 3.95

4375 1050 3.27 1097 3.56 1142 3.86 1186 4.15 1228 4.45

4688 1084 3.75 1130 4.06 1174 4.37 1216 4.68 1257 5.00

5000 1120 4.28 1164 4.61 -- -- 1248 5.27 1288 5.60

5313 -- -- -- -- -- -- -- -- -- --

5625 -- -- -- -- -- -- -- -- -- --

5938 -- -- -- -- -- -- -- -- -- --

6250 -- -- -- -- -- -- -- -- -- --

NOTE: For more information, see General Fan Performance Notes.

Boldface indicates field--supplied drive is required.

580J

78

580J**14 3 PHASE 12.5 TON VERTICAL SUPPLY

CFM

Available External Static Pressure (in. wg)

0.2 0.4 0.6 0.8 1.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Standard Static Option Medium Static Option

3438 685 1.12 751 1.32 813 1.54 871 1.76 927 1.99

3750 736 1.41 797 1.63 855 1.86 910 2.10 963 2.35

4063 787 1.75 844 1.99 898 2.24 951 2.49 1001 2.75

4375 839 2.14 892 2.40 943 2.67 993 2.94 1041 3.21

4688 891 2.60 941 2.87 990 3.15 1037 3.44 1082 3.73

5000 944 3.11 991 3.40 1037 3.70 1082 4.00 1125 4.31

5313 997 3.69 1042 4.00 1085 4.32 1128 4.64 -- --

5625 1051 4.34 1093 4.67 -- -- -- -- -- --

5938 -- -- -- -- -- -- -- -- -- --

6250 -- -- -- -- -- -- -- -- -- --

CFM

Available External Static Pressure (in. wg)

1.2 1.4 1.6 1.8 2.0

RPM BHP RPM BHP RPM BHP RPM BHP RPM BHP

Medium Static Option High Static Option

3438 981 2.23 1032 2.47 1082 2.72 1130 2.97 1177 3.23

3750 1014 2.60 1063 2.86 1111 3.12 1157 3.39 1202 3.66

4063 1049 3.02 1097 3.29 1142 3.57 1186 3.85 1230 4.14

4375 1087 3.49 1132 3.78 1176 4.08 1218 4.37 1260 4.68

4688 1126 4.03 1169 4.33 1211 4.64 -- -- -- --

5000 1167 4.63 -- -- -- -- -- -- -- --

5313 -- -- -- -- -- -- -- -- -- --

5625 -- -- -- -- -- -- -- -- -- --

5938 -- -- -- -- -- -- -- -- -- --

6250 -- -- -- -- -- -- -- -- -- --

NOTE: For more information, see General Fan Performance Notes.

Boldface indicates field--supplied drive is required.

General fan performance notes:

1. Interpolation is permissible. Do not extrapolate.

2. External static pressure is the static pressure difference between the return duct and the supply duct plus the static

pressure caused by any FIOPs or accessories.

3. Tabular data accounts for pressure loss due to clean filters, unit casing, and wet coils. Factory options and accessories

may add static pressure losses. Selection software is available, through your salesperson, to help you select the best

motor/drive combination for your application.

4. The Fan Performance tables offer motor/drive recommendations. In cases when two motor/drive combinations would

work, Bryant recommended the lower horsepower option.

5. For information on the electrical properties of Bryant motors, please see the Electrical information section of this

book.

6. For more information on the performance limits of Bryant motors, see the application data section of this book.

580J

79

APPENDIX III. FAN PERFORMANCE (cont.)

Pulley Adjustment

UNIT MOTOR/DRIVE

COMBO

MOTOR PULLEY TURNS OPEN

0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5 4.0 4.5 5.0

08

3phase

Standard Static 747 721 695 670 644 618 592 566 541 515 489

Medium Static 949 927 906 884 863 841 819 798 776 755 733

High Static 1102 1083 1063 1044 1025 1006 986 967 948 928 909

12

3phase

Standard Static 838 813 789 764 739 715 690 665 640 616 591

Medium Static 1084 1059 1035 1010 986 961 936 912 887 863 838

High Static 1240 1218 1196 1175 1153 1131 1109 1087 1066 1044 1022

14

3phase

Standard Static 838 813 789 764 739 715 690 665 640 616 591

Medium Static 1084 1059 1035 1010 986 961 936 912 887 863 838

High Static 1240 1218 1196 1175 1153 1131 1109 1087 1066 1044 1022

NOTE: Do not adjust pulley further than 5 turns open.

-- Factory settings

580J

80

ELECTRICAL INFORMATION

580J*08D,F 2---Stage Cooling 7.5 Tons

V --- P h --- H z

VOLTAGE

RANGE

COMP (Cir 1) COMP (Cir 2) OFM (ea) IFM

RLA LRA RLA LRA WATTS FLA TYPE Max

WATTS

Max

AMP Draw EFF at Full Load FLA

MIN MAX

2 0 8 --- 3 --- 6 0 187 253 13.6 83 13.6 83 325 1.5

STD 1448 5.5 80% 5.2

MED 2278 7.9 81% 7.5

HIGH 4400 15.0 81% 15.0

2 3 0 --- 3 --- 6 0 187 253 13.6 83 13.6 83 325 1.5

STD 1448 5.5 80% 5.2

MED 2278 7.9 81% 7.5

HIGH 4400 15.0 81% 15.0

4 6 0 --- 3 --- 6 0 414 506 6.1 41 6.1 41 325 0.8

STD 1448 2.7 80% 2.6

MED 2278 3.6 81% 3.4

HIGH 4400 7.4 81% 7.4

5 7 5 --- 3 --- 6 0 518 633 4.2 33 4.2 33 325 0.6

STD 1379 2.5 80% 2.4

MED 3775 2.9 81% 2.8

HIGH 4400 5.9 81% 5.6

580J*12D,F 2---Stage Cooling 10 Tons

V --- P h --- H z

VOLTAGE

RANGE

COMP (Cir 1) COMP (Cir 2) OFM (ea) IFM

RLA LRA RLA LRA WATTS FLA TYPE Max

WATTS

Max

AMP Draw EFF at Full Load FLA

MIN MAX

2 0 8 --- 3 --- 6 0 187 253 15.6 110 15.9 110 325 1.5

STD 2120 5.5 80% 5.2

MED 3775 10.5 81% 10.0

HIGH 4400 15.0 81% 15.0

2 3 0 --- 3 --- 6 0 187 253 15.6 110 15.9 110 325 1.5

STD 2120 5.5 80% 5.2

MED 3775 10.5 81% 10.0

HIGH 4400 15.0 81% 15.0

4 6 0 --- 3 --- 6 0 414 506 7.7 52 7.7 52 325 0.8

STD 2120 2.7 80% 2.6

MED 3775 4.6 81% 4.4

HIGH 4400 7.4 81% 7.4

5 7 5 --- 3 --- 6 0 518 633 5.8 39 5.7 39 325 0.6

STD 1390 2.1 80% 2.0

MED 3775 2.9 81% 2.8

HIGH 4400 5.9 81% 5.6

580J*14D,F 2---Stage Cooling 12.5 Tons

V --- P h --- H z

VOLTAGE

RANGE

COMP (Cir 1) COMP (Cir 2) OFM (ea) IFM

RLA LRA RLA LRA WATTS FLA TYPE Max

WATTS

Max

AMP Draw EFF at Full Load FLA

MIN MAX

2 0 8 --- 3 --- 6 0 187 253 19.0 123 22.4 149 1288 6.2

STD 2615 7.9 81% 7.5

MED 3775 10.5 81% 10.0

HIGH 4400 15.0 81% 15.0

2 3 0 --- 3 --- 6 0 187 253 19.0 123 22.4 149 1288 6.2

STD 2615 7.9 81% 7.5

MED 3775 10.5 81% 10.0

HIGH 4400 15.0 81% 15.0

4 6 0 --- 3 --- 6 0 414 506 9.7 62 10.6 75 1288 3.1

STD 2615 3.6 81% 3.4

MED 3775 4.6 81% 4.4

HIGH 4400 7.4 81% 7.4

5 7 5 --- 3 --- 6 0 518 633 7.4 50 7.7 54 1288 2.5

STD 3775 2.9 81% 2.8

MED 3775 2.9 81% 2.8

HIGH 4400 5.9 81% 5.6

580J

81

MCA/MOCP DETERMINATION NO C.O. OR UNPWRD C.O.

UNIT

NOM.

V --- P h --- H z

IFM

TYPE

COMBUSTION

FAN MOTOR

FLA

POWER

EXHAUST

FLA

NO C.O. or UNPWRD C.O.

NO P.E. w/ P.E. (pwrd fr/ unit)

MCA MOCP DISC. SIZE MCA MOCP DISC. SIZE

FLA LRA FLA LRA

580J*08D,F

208/230--- 3--- 60

STD

0.48 3.8

43.6 50 46 198 47.4 60 51 202

MED 45.9 50 49 235 49.7 60 53 239

HIGH 53.8 60 58 261 57.6 70 62 265

4 6 0 --- 3 --- 6 0

STD

0.25 1.8

20.1 25 21 97 21.9 25 23 99

MED 20.9 25 22 116 22.7 25 24 118

HIGH 25.3 30 27 129 27.1 30 29 131

5 7 5 --- 3 --- 6 0

STD

0.24 3.8

14.8 20 16 79 18.6 20 20 83

MED 15.2 20 16 94 19.0 25 21 98

HIGH 18.3 20 19 108 22.1 25 24 112

580J*12D,F

208/230--- 3--- 60

STD

0.48 3.8

48.5 60 51 263 52.3 60 56 267

MED 53.3 60 57 306 57.1 70 61 310

HIGH 58.3 70 62 315 62.1 70 67 319

4 6 0 --- 3 --- 6 0

STD

0.25 1.8

23.7 30 25 125 25.5 30 27 127

MED 25.5 30 27 147 27.3 30 29 149

HIGH 28.5 35 31 151 30.3 35 33 153

5 7 5 --- 3 --- 6 0

STD

0.24 3.8

17.9 20 19 95 21.7 25 23 99

MED 18.7 25 20 106 22.5 25 24 110

HIGH 21.5 25 23 120 25.3 30 27 124

580J*14D,F

208/230--- 3--- 60

STD 0.48 3.8 65.5 80 69 365 69.3 80 73 369

MED 68.0 80 72 382 71.8 80 76 386

HIGH Model not available due to high amperage draw.

4 6 0 --- 3 --- 6 0

STD

0.25 1.8

31.7 40 33 183 33.5 40 35 185

MED 32.7 40 35 192 34.5 45 37 194

HIGH 35.7 45 38 196 37.5 45 40 198

5 7 5 --- 3 --- 6 0

STD

0.24 3.8

24.0 30 25 144 27.8 30 30 148

MED 24.0 30 25 144 27.8 30 30 148

HIGH 26.8 30 29 158 30.6 35 33 162

LEGEND:

CO --- Convenient outlet

DISC --- Disconnect

FLA --- Full load amps

IFM --- Indoor fan motor

LRA --- Locked rotor amps

MCA --- Minimum circuit amps

MOCP --- Maximum over current protection

P E --- P o w e r e x h a u s t

UNPWRD CO --- Unpowered convenient outlet

NOTES:

1. In compliance with NEC requirements for multimotor and

combination load equipment (refer to NEC Articles 430 and

440), the overcurrent protective device for the unit shall be

fuse or HACR breaker. Canadian units may be fuse or circuit

breaker.

2. Unbalanced 3-Phase Supply Voltage

Never operate a motor where a phase imbalance in supply

voltage is greater than 2%. Use the following formula to

determine the percentage of voltage imbalance.

% Voltage Imbalance = 100 x

max voltage deviation from average voltage

average voltage

Example: Supply voltage is 230-3-60

AB = 224 v

BC = 231 v

AC = 226 v

Average Voltage =

(224 + 231 + 226)

=

681

33

= 227

Determine maximum deviation from average voltage.

(AB) 227 – 224 = 3 v

(BC) 231 – 227 = 4 v

(AC) 227 – 226 = 1 v

Maximum deviation is 4 v.

Determine percent of voltage imbalance.

% Voltage Imbalance = 100 x

4

227

= 1.76%

This amount of phase imbalance is satisfactory as it is below the

maximum allowable 2%.

IMPORTANT: If the supply voltage phase imbalance is more than

2%, contact your local electric utility company immediately.

580J

82

APPENDIX IV. WIRING DIAGRAM LIST

Wiring Diagrams

580J

SIZE VOLTAGE CONTROL POWER

08D,F

208/230---3---60 48TM501325 48TM501326

460---3---60 48TM501325 48TM501326

575---3---60 48TM501325 48TM501327

12D,F

208/230---3---60 48TM501325 48TM501326

460---3---60 48TM501325 48TM501326

575---3---60 48TM501325 48TM501327

14D,F

208/230---3---60 48TM501379 48TM501380

460---3---60 48TM501379 48TM501380

575---3---60 48TM501379 48TM501381

All RTU---MP* 48TM500988

NOTE: Component arrangement on Control; Legend on Power Schematic

* RTU--MP control labels overlay a portion of the base unit control label. The base unit label drawing and the control option drawing are required to

provide a complete unit control diagram.

580J

83

APPENDIX V. MOTORMASTER SENSOR LOCATIONS

580/558J-D08

580/558J-D12

C09226

Fig. 75 -- 580J*08--12D,F Outdoor Circuiting

NOTE: The low ambient kit for the 12.5 ton unit utilizes a pressure transducer, and therefore there is no Motormaster

temperature sensor location for this unit.

Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without incurring obligations.

E2009 Bryant Heating & Cooling Systems D7310 W. Morris St. DIndianapolis, IN 46231 Printed in U.S.A. Edition Date: 5/09

Replaces: NEW

Catalog No.SM580J---02

580J

84

580J

85

UNIT START-UP CHECKLIST

I. PRELIMINARY INFORMATION:

MODEL NO.:

DATE: ______________

SERIAL NO: _____________________________________

TECHNICIAN: ___________________________________

BUILDING LOCATION:____________________________

II. PRE-START-UP (insert check mark in box as each item is completed):

jVERIFY THAT ALL PACKAGING MATERIALS HAVE BEEN REMOVED FROM UNIT

jVERIFY THAT CONDENSATE CONNECTION IS INSTALLED PER INSTALLATION INSTRUCTIONS

jVERIFY THAT FLUE HOOD IS INSTALLED

jCHECK ALL ELECTRICAL CONNECTIONS AND TERMINALS FOR TIGHTNESS

jCHECK TO ENSURE NO WIRES ARE TOUCHING REFRIGERANT TUBING OR SHARP EDGES

jCHECK GAS PIPING FOR LEAKS

jCHECK THAT RETURN--AIR FILTER IS CLEAN AND IN PLACE

jVERIFY THAT UNIT INSTALLATION IS LEVEL

jCHECK FAN WHEEL AND PROPELLER FOR LOCATION IN HOUSING/ORIFICE AND VERIFY SETSCREW IS TIGHT

jVERIFY PULLEY ALIGNMENT AND BELT TENSION ARE CORRECT

III. START-UP

ELECTRICAL

SUPPLY VOLTAGE L1-L2 L2-L3 L3-L1

COMPRESSOR 1 L1 L2 L2

COMPRESSOR 2 L1 L2 L2

INDOOR FAN AMPS L1 L2 L2

TEMPERATURES

OUTDOOR-AIR TEMPERATURE DB WB

RETURN-AIR TEMPERATURE DB WB

COOLING SUPPLY AIR DB WB

GAS HEAT SUPPLY AIR DB

PRESSURES

GAS INLET PRESSURE IN. WG

GAS MANIFOLD PRESSURE IN. WG (LOW FIRE) IN. WG (HI FIRE)

REFRIGERANT SUCTION CIR 1 PSIG TEMP _F

CIR 2 PSIG TEMP _F

REFRIGERANT DISCHARGE CIR 1 PSIG TEMP _F

CIR 2 PSIG TEMP _F

jVERIFY REFRIGERANT CHARGE USING CHARGING CHARTS

jVERIFY THAT 3--PHASE SCROLL COMPRESSORS ARE ROTATING IN CORRECT DIRECTION

580J