CARRIER Air Handler (indoor Blower&evap) Manual L0210273

User Manual: CARRIER CARRIER Air Handler (indoor blower&evap) Manual CARRIER Air Handler (indoor blower&evap) Owner's Manual, CARRIER Air Handler (indoor blower&evap) installation guides

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Installation Instructions

Direct Expansion

Fan Coil for Puron® Refrigerant

002, 003, 005, 006

FV4A

______-_

Fig. 1--Model FV4A

A98023

NOTE: Read the entire instruction manual before starting the installation.

This symbol --->indicates a change since the last issue.

SAFETY CONSIDERATIONS

Improper installation, adjustment, alteration, service, maintenance, or use can cause explosion, fire, electrical shock, or other conditions which may

cause personal injury or property damage. Consult a qualified installer, service agency, or your distributor or branch for information or assistance.

The qualified installer or agency must use factory-authorized kits or accessories when modifying this product. Refer to the individual insmlctioas

packaged with kits or accessories when installing.

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/K. When you see this symbol on the unit and in instructions manuals, be alert to

the potential for personal injury.

Understand the signal words DANGER, WARNING, CAUTION, and NOTE. These words are used with the safety-alert symbol. DANGER

identifies the most serious hazards which will result in severe personal injury of death. WARNING signifies hazards which could result in personal

Form: IM-FV4A-05 Cancels: IM-FV4A-04 Printed in U.S.A. 3-02 Catalog No. 63FV-4A4

injury or death. CAUTION is used to identify unsafe practices which would 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.

WARNING: Before installing or servicing unit, always turn off all power to unit There may be more than 1 disconnect

switch. Turn off accessory heater power if applicable. Electrical shock can cause personal injury or death.

INTRODUCTION

Model FV4A Fan Coil units are designed for flexibility and can be used for upflow, horizontal, or downfhiw (kit required and manufactured and

mobile home) applications. These units are designed specifically for Puron (R410A) and must be used only with Puron air conditioners and heat

pumps as shipped.

These units are available for application in systems of 24,000 through 60,000 Btuh nominal cooling capacities. Factory-anthorized, field-installed

electric heater packages are available in 5 through 30 kw. See Product Data for available accessory kits.

INSTALLATION

PROCEDURE I_HECK EQUIPMENT

Unpack unit and move to final location. Remove carton taking cam not to damage unit.

Inspect equipment for damage prior to installation. File claim with shipping company if shipment is damaged or incomplete. Locate unit rating

plate which contains proper installation information. Check rating plate to be sure unit matches job specifications.

PROCEDURE 2--MOUNT FAN COIL

Unit can stand or lie on floor, or hang from ceiling or wall. Allow space for wiring, piping, and servicing uniL

IMPORTANT: When unit is installed over a finished ceiling and/or living area, building codes may require a field-supplied secondary condensate

pan to be installed under the entire unit. Some localities may allow the alterative of running a separate, secondary condensate line. Consult local

codes for additional restrictions or precautions.

When installing any fan coil over a finished ceiling and/or living area, installation of a secondary drain pan under entire unit to avoid damage to

ceiling is recommended.

FV4A Fan Coils can be installed for upflow and horizontal-leR applications as factory shipped. (See Fig. 2, 4and 8.) Units can be installed for

horizontal-right applications with field modifications. Units may be converted for downfiow applications using factory-authorized accessory kit.

NOTE: To ensure proper drainage for horizontal installations, unit must be installed so it is within 1/8 in. level of the length and width of unit.

A. Upflow Installation

If return air is to be ducted, install duct flush with floor. Set unit on floor over opening.

Only use return-air opening provided. All return air must pass through the coil. (See Fig. 2.)

002-005 21-1N.

006 24_1N. FRONT SERVICE

CLEARANCE

UPFLOW/DOWNFLOW --

SECONDARY DRAIN

UPFLOW/DOWNFLOW --

PRIMARY DRAIN

UPFLOW/DOWNFLOW

SECONDARY DRAIN "_

UPFLOW/DOWNFLOW j

PRIMARY DRAIN

SUPPLY DUCT

ENTRY

OPTIONS

A

[ UNIT [ 191n. I0O3

1/2-

FIELD MODIFIED

A SIDE RETURN

LOCATION FOR

SLOPE COIL

UNITS ONLY

FIELD SUPPLIED

RETURN PLENUM

A00091

Fig. 2--Slope Coil Unit in Upflow Application

--2_

r

-2SCREWS I

I

I

BLOWER BOX

BRACKET

COIL BOX

2SCREWS

A95293

Fig. 3_Modular Unit Assembly

B. Modular Units

The FV4A Fan Coil in size 006 is a 2-piece modular unit. Modular construction allows installer to disassemble unit into 2 components, coil box

and blower box, for ease of installation. (See Fig. 3.)

To disassemble unit, remove rear comer brackets by removing 2 screws which secure brackets. (See Fig. 3.) Remove either 2 screws in each front

comer of coil box, or 2 screws in blower box. Do not remove all 4 screws in each comer. (See Fig. 3.) Sections may now be separated by lifting

top section from lower section.

To reassemble, reverse above procedure. Be certain to reinstall all fasteners when reassembling.

C. Horizontal Installations

Be sure installation compiles with all applicable building codes that may require installation of a secondary condensate pan.

1. Arrange support for unit by setting it in or above secondary condensate pan.

2. When suspending unit from ceiling dimples in casing indicate proper location of screws for mounting metal support straps. (See Fig. 4.)

D. Horizontal-Right Conversion of Units with Slope Coils

To convert units for horizontal fight installations:

1. Remove blower and coil access panels and fitting panel. (See Fig. 5.)

2. Remove screw securing coil assembly to right side casing flange.

3. Remove coil assembly.

4. Lay fan coil on its fight side and reinstall coil assembly with condensate pan down. (See Fig. 5.)

5. Attach coil to casing flange using previously removed coil mounting screw.

6. Reinstall access panels and fitting panel, aligning boles with tubing connections and condensate pan connections.

Make sure liquid and suction tube grommets are in place to prevent air leaks and cabinet sweating. Install grommets after brazing.

E. Horizontal Right Conversion of Units With A-Coil

To convert units for horizontal right instanations:

1. Remove blower and coil access panels. (See Fig. 6.)

2. Remove metal clip securing fitting panel to condensate pan. Remove fitting panel.

3. Remove 2 snap-in clips securing A-coil in unit.

4. Slide coil and pan assembly out of unit.

5. Remove horizontal drain pan support bracket from coil support rail on left side of unit and reinstall on coil support rail on right side of unit.

6. Convert air-seal assembly for horizontal righL

a. Remove nir-seal assembly from coil by removing 4 screws. (See Fig. 6.)

b. Remove air apiltter (B) from coil seal assembly by removing 3screws. (See Fig. 6-factuty-shippod inset.)

--3--

LOW VOLT

ENTRY

OPTIONS

SJk L, D

HANGING

STRAPS

UNIT

POWER

ENTRY OPTIONS

_RILONTAL LEFT

FIELD _

HANGING

STRAPS

'!RIMARY

DRAIN

002_05 21 -iN.

006 24-1N.

FRONT SERVICE

CLEARANCE

(FULL FACE

OF UNIT)

W

1 3/4 IN

SECONDARY

DRAIN

FILTER ACCESS

CLEARANCE

Fig. €--Slope Coil in Horizontal-Left Application (Factory Ready)

COIL MOUNTING BLOWER

ASSEMBLY

CONNECTIONS

A00096

COIL

RAIL

SLOPE COIL

SKI

..-).

"PRIMARY DRAIN

-OVERFLOW HOLE

;ECONDARY DRAIN

A02002

Fig. 5_Slope Coil in Horizontal Right Application

c. Remove filler plate (A) and install air splitter (B) in place of filler plate.

d. Install filler plate (A) as shown in horizontal tight application.

e. Remove condensate _oughs (C) and install on opposite tube sheets.

f. Install hose onto plastic spout.

7. Install hofizontaI pan on fight side of coil assembly.

8. Slide coil assembly into casing. Be sure coil bracket on each comer of vertical pan engages coil support rails.

9. Reinstall 2 snap-in clips to correctly position and secure coil assembly in unit. Be sure clip with large offset is nsc.d on fight side of unit

to secure horizontal pan.

---4---

CONNECTIONS HORIZONTAL

RIGHT

._ APPLICATION

SUPPORT

RAIL

DRAIN PAN

SUPPORT _

BRACKET

COIL_

SUPPORT

RAIL

BRACKET

DRAIN pAN

HORIZONTAL RIGHT

SECONDARY DRAIN

HORIZONTAL RIGHT

Fig. _--A-Coil in Horizon_l-Right Application

A00071

10. Remove 2 oval coil access panel plugs and reinstall into holes on left side of coil access panel and fitting panel.

11. Remove insulation knockouts on right side of coil access panel.

12. Reinstall access and fitting panels, aligning holes with tubing connections and condensate pan connections. Be sure to reinstall metal clip

between fitting panel and vertical condensate pan.

Make sure liquid and suction tube grommets axe in place to prevent air leaks and cabinet sweating.

F. Downflow Installations

To convert units for downflow applications, refer to Installation Instructions supplied with kit for proper installation. For FV4A unit size 003, use

kit Part No. KFADC02OISLP. For FV4A unit sizes 002, 005, and 006 use kit Part No. KFADC0401ACL. Use fireproof resilient gasket, 1/8- to

l/4-in, thick, between duct, unit, and floor.

G. Manufactured and Mobile Home Housing Applications

1. Fan coil unit must be secured to the structure using field-supplied hardware.

2. Allow a minimum of 24" clearance from access panels.

3. Recommended method of securing for typical applications

a. If fan coil is away from wall, attach pipe sa'ap to top of fan coil using No. 10 self tapping screws. Angle strap down and away from back

of fan coil, remove all slack, and fasten to wall stud of structure using 5/16-in. lag screws. Typical both sides of fan coil.

b. If fan coil is against wall, secure fan coil to wall stud using li8-in, thick right-angle brackets. Attach brackets to fan coil using No. 10

self tapping screws and to wall stud using 5/16-in. lag screws. (See Fig. 7.)

PROCEDURE 3---AIR DUCTS

Connect supply-air duct over outside of 3/4-in, flange provided on supply-air opening. Secure duct to flange with proper fasteners for type of duct

used, and seal duct-to-unit joint.

Duct connection flanges are provided on unit air discharge connection,

When using FV4A units with 20-, 24-, and 30-kw electric heaters, maintain a I-in. clearance from combustible materials to discharge plenum and

ductwork for _ distance of 36 in. from unit. Use accessory downflow base to maintain proper clearance on dowrdlow installations.

Use flexible connectors between ductwork and unit to prevent transmission of vibration. When electric heater is installed, use heat resistant material

for flexible connector between ductwork and unit at discharge connection. Doctwork passing through unconditioned space must be insulated and

covered with vapor barrier.

Ductwork Acoustical Teeatment

Metal duct systems that do not have a 90° elbow and I0 ft of main duct to fast branch takeoff may requite internal acoustical insulation lining.

As an alternative, fibrous ductwork may be used if constructed and installed in accordance with the latest edition of SMACNA construction

standard on fibrous glass ducts. Both acoustical lining andfibrous ductwock shall comply with National Fire Protection Association Standards 90A

or B as tested by UL Standard 181 for Class 1 air ducts.

--5--

4" MAX

SECURE FAN COILTO STRUCTURE

UNIT AWAY FROM WALL

PIPE STRAP

(TYPICAL BOTH SIDES)

_'_ OR

UNIT AGAINST WALL

1/8-lB. THICK ANGLE

MOUNTING BRACKET

(TYPICAL BOTH SLOES)

.--)

4"MAX

DOWN FLOW

(KFACB)

SECURE UNITTO FLOOR

ANGLE BRACKET OR PIPE STRAP

Fig. 7--A-Coil

A02003

FACTORY SHIPPED

HORIZONTALLEFT

APPLICATION

COIL

COIL

SUPPORT

RAIL

DRAIN PAN

SUPPORT

BRACKET

COIL

HORIZONTAL

DRAIN PAN

AIR SEAL

ASSEMBLY.

PRIMARY DRAIN

HORIZONTAL LEFT

SECONDARY DRAIN

HORIZONTAL LEFT

REFRIGERANT

CONNECTIONS A00072

Fig. 8--A-Coil in Horizontal Left Application (Factory Reedy)

PROCEDURE 4---ELECTRICAL CONNECTIONS

On units with a factory installed disconnect with pull-out removed, service and maintenance can be safely performed on only the load side of the

control package.

A_ WARNING: Field wires on the line side of the disconnect found in the fan coil unit remain live, even when the pull-out

is removed. Service and maintenance to incoming wiring can not be performed until the main disconnect switch (remote to

the unit) is turned off. Failure to do so will result in electrical shock causing personal injury ordeath.

A. Line-Voltage Connections

If unit contains an electric heater, remove and discard power plug from fan coil and connect male plug from heater to female plug from unit wiring

harness. (See Electric Heater Installation Instructions.)

For units without electric beat:

1. Connect 208/230v power leads from field disconnect to yellow and black s_dpped leads.

---6--

2. Connect ground wire to unit ground lug.

NOTE: Units installed without electric heat should have a field-supplied sheet metal block-off plate coveting the heater opening. This will reduce

air leakage and formation of exterior condensation.

Check all factory wiling per unit wiring diagram and inspect factory wiring connections to be sure none were loosened in _ansit or installation.

/tx WARNING: Before installing or servicing system, always turn off all power to system. There may be more than 1

disconnect switch. Turn off accessory heater power if applicable. Electrical shock can cause personal injury or death.

AX CAUTION: If a disconnect switch is to be mounted on the unit, select a location where drill or fastener will not contact

electrical or refrigerant components. Electrical shock can cause personal injury or death.

NOTE: Before proceeding with electrical connections, make cemain that supply voltage, frequency, and phase are as specified on unit rating plate.

Be sure that electrical service provided by the utility is sufficient to handle the additional load imposed by this equipment. See unit wiring label

for proper field high- and low-voltage wiring. Make all electrical connections in accordance with NEC and any local codes or ordinances that may

apply. Use copper wire only. The unit must have a separate branch electric circuit with a field-supplied disconnect switch located within sight from,

and readily accessible from the unit.

B. 24-V Control System Connections to Unit Printed-Circuit Board (PCB)

Refer to unit wiring instructions for recommended wiring procedures. Use No. 18 AWG color-coded, insulated (35°C minimum) wires to make

low-voltage counections between thermostat and unit. If thermostat is located more than 100 ft from unit (as measured along the low-voltage

wires), use No. 16 AWG color-coded, insulated (35°C minimum) wires. PCB is circuited for single-stage heater operation. When additional heater

staging is desired using outdoor thermostats or Intelligent Heat Staging, remove Jumper J2 on PCB to enable staging.

Connect low-voltage leads to thermostat and outdoor unit. (See Fig. 9, 10, 11, or 12.)

INDOOR CONTROL

HEAT STAGE 2

HEAT STAGE 1

COOL STAGE 1

FAN [_

24 VAC HOT

DEHUMIDIFY

24VACCOMM [_

HUMIDIFY

I--';--]

OUTDOOR

SENSOR

FAN COIL 1-SPEED

AIR CONDITIONER

.... .i

"REMOVE J2 JUMPER

I Y1 II "_ FOR HEAT STAGING

I

HUMIDIFIER

SENSOR

A98477

Fig. 9_FV4A Fan Coil Wiring with 1-Speed Air Conditioner

C. Intelligent Heat Staging Option

Intelligent Heat staging of the electric heat package is possible when the FV4A is installed as a part of a single-speed heat pump system using

a corporate 2-speed programmable thermostat (model TSTATXXP2S01-B), Thermidistat TM Control, or capable zoning control and any 1of the

following electric heat packages:

Relay heaters _FCEHI401N09, KFCEH1501FI5, KFCEHI701CI5, KFCEH180 IF20, KFCEH 1901C20, KFCEH2101F24, OR KFCEH2201F30.

Complete system low-voltage wiring as shown in Fig. 9, 10, 11, or 12.

NOTE: Where local codes require thermostat wiring be routed through conduit or raceways, splices can be made inside the fan coil unit. All

wiring must be NEC Class 1and must be separated from incoming power leads.

A factory-anthotized disconnect kit is available for installation of 0- through 10-kw applications. When electric heat packages with circuit breakers

are installed, the circuit breaker can be used as a disconnect. Transformer is factory wired for 230-v operation. For 208-v applications, disconnect

black wire from 230-v terminal on transformer and connect it to 208-v terminaL (See Fig. 13.)

The secondary circuit of transformer is protected by a 5-amp fiise mounted on printed-circuit board.

IMPORTANT: Do not use outdoor thermostat with Intelligent Heat Staging.

--7--

INDOOR CONTROL

HEAT STAGE 2

HEAT STAGE 1

COOL STAGE 1

COOL STAGE 2 _-_

FAN

24 VAC HOT _-

DEHUMIDIFY

24 VAC COMM

HUMIDIFY

NIA

OUTC<_ORI--I--_"_

.

FAN COIL 2"SPEED

AIR CONDITIONER

.... "_ "-'J" RE!OVE J2 JU!PER

.... _ • FOR HEAT STAGING

-D REMOVE

[] J'J1 JUMPERFOR

DEHUMIDIFY

._'MOqES

....

....7__.-:__-____

HUMIDIFIER /

-----_ (24VAC)_--

--- SENSOR

Fig. IO--FV4A Fan Coil Wiring with 2-Speed Air Conditioner

A98478

INDOOR CONTROL FAN COIL 1-SPEED

HEAT PUMP

RVS COOLING

HEAT STAGE 3

HEAT STAGE 2 [_

HEAT/COOL

STAGE 1

24 VAC HOT

DEHUMIDIFY _-

24 VAC COMM

HUMIDIFY

RVS HEATING

OUTERFI- '

.... i

._. REMOVE J2 JUMPER.... "_,FOR HEAT STAGING

REMOVE

]'Jt JUMPER FOR

' DEHUMIDIFY

.... ._ MODES

J

L(24VAC) j

OUTDOOR "-,

............. J

Fig. 11--FV4A Fan Coil Wiring with 1-Speed Heat Pump

A98475

D. Ground Connections

Ax WARNING: The cabinet must have an uninterrupted or unbroken ground according to NEC, ANSI/NFPA 70 and local

codes to minimize personal injury if an electrical fault should occur. The ground may consist of electrical wire or metal

conduit when installed in accordance with existing electrical codes. (See Ground/Conduit Note below.) Failure to follow this

warning could result in an electrical shock, fire, or death.

NOTE: Use UL listed conduit and conduit connector to connect supply wiro(s) to unit and obtain proper grounding. If conduit connection uses

reducing washers, a separate ground wire must be used. Grounding may also be accomplished by using grounding lug provided in control box.

Use of dual or multiple supply circuits will require grounding of each circuit to ground lugs provided on unit and heaters.

----8---

--)

INDOOR CONTROL

RVS cOOLING

HEAT/COOL [_

STAGE1

HEATSTAGE3

HEAT/COOL

STAGE2

F_ [__

24 VAC HOT

DEHUMIDIFY

24VAC COMM [_

HUMIDIFY ['_.

RVS HEATING

OUT.OR

FAN COIL 2-SPEED

HEAT PUMP

....

....;

L..t --

REMOVEJt FOR

DEHUMIDIFY

.... MODES

....

HUMIDIFIER /

---"_ (24 VAC)

............. .J

Fig. 12_4A Fan Coil Wiring with 2-Speed Puron Heat Pump

A02005

BLK

A94067

Fig. 13_Transformer Connections

PROCEDURE 5_REFRIGERANT TUBING CONNECTION AND EVACUATION

Use accessory tubing package or field-supplied tubing of refiigerant grade. Insulate entire suction tube ff field-supplied tubing is used. Tubing

package has an insulated suction tube. Do not use damaged, dirty, or contaminated tubing because it may plug refrigerant flow contlol device.

When tubing package is used and sweat connections are made within 60 sec, coil and tubing system does not require evacuation. Always evacuate

coil and field-supplied tubing to 500 microns before opening outdoor unit service valves.

CAUTION: A brazing shield MUST be used when tubing sets are being brazed to the unit connections to prevent

damage to the unit surface. Braze with SiI-Fos or Phos-copper on copper to copper joints. Wrap s wet cloth around rear of

fitting to prevent damage to TXV.

CAUTION: To prevent damage to thermostatic expansion valve, remove sensor bulb from vapor tube while brazing

vapor connections. Units have sweat suction and liquid tube connections, Make suction tube connection first.

Units have sweat suction and fiquid tube connections. Make suction tubeconnection first.

1. Cut tubing to correct length.

2. Insert tube into sweat connection on unit until it bottoms.

3. Braze with Sil-Fos or Phos-oopper.

/_ CAUTION: Wrap swet cloth around rear of fitting to prevent damage to factory-made joints.

4. Evacuate coil and tubing system to 500 microns using deep vacuum method.

PROCEDURE 6_CONDENSATE DRAIN

Units are equipped with primary and secondary 3/4-in. _ drain connections. For proper condensate line installation see Fig. 2, 4, 5, 6, and 8.

To prevent property damage and achieve optimum drainage performance, BOTH primary and secondary drain lines shoald be installed and include

properly-sized condensate traps. (See Fig. 14 and 16.) Factory-approved condensate traps are available. Be sure to install plastic push-in plugs in

unused condensate drain fittings. It is recommended that PVC fittings be used on the plastic condensate pan. Do not over-tighten. Finger-tighten

plus 1-1/2 turns. Use pipe dope.

UNIT

-->

2" M]N

Fig. 14_Recommended Condensate Trap

A02006

DO NOT USE SHALLOW RUNNING TRAPS!

Rg. 15--Insufficient Condensate Trap

A95320

/_ CAUTION: Shallow running traps are inadequate and DO NOT allow proper condensate drainage. (See Fig. 15.)

NOTE: When connecting condensate drain lines avoid blocking filter access panel. Prime both primary and secondary condensate traps after

cormecfing to drain pan.

NOTE: If unit is located in or above a living space where damage may result from condensate overflow, a field-supplied external condensate pan

should be installed underneath the entire uniL and asecondary condensate line (with appropriate trap) should be run from the unit into the pan.

Any condensate in this external condensate pan should be drained to a noticeable place. As an alternative to using an external condensate pan, some

localities may allow the use of a separate 3/4-in. condensate line (with appropriate trap) to a place where the condensate will be noticeable. The

owner of the structure must be informed that when condensate flows from the secondary drain or external condensate pan, the unit requires

servicing, or water damage will occur.

Install traps in the condensate lines as close to the coil as possible. (See Fig. 16.) Make sure that the outlet of each trap is below its connection

to the condensate pan to prevent condensate from overflowing the drain pan. Prime all traps, test for leaks, and insulate traps if located above a

living area.

Condensate drain lines should be pitched downward at a minimum of 1 in. for every 10 ft. of length. Consult local codes for additional restrictions

or precautions.

z_ CAUTION: Never operate unit without a filter or with filter access door removed. Damage to blower motor or coil can

mulL

IMPORTANT: Factory authorized tilters must be used when locating the filter inside the unit. (See Table 1.) For those applications where access

to an internal filter is impractical, afield-suppfied filter must be installed in the return duct system.

PROCEDURE 7---UNIT START-UP

Refer to outdoor unit Installation Instructions for system start-up inst_mctions and refrigerant charging method details.

--I0_

FILTER KIT

(12 PACK)

Table l_iltsr Kits

PART NUMBER

KFAFK0212MED

KFAFK0312LRG

KFAFK0412XXL

SIZE USED WITH

002,

003. 005

006

o

ACCESS

PANEL

PRIMARY TRAP REOUIRED_

(USE FACTORY KIT OR

FIELD-SUPPLIED TRAP OF

SUFFICIENT DEPTH.

STANDARD PRIMARY TRAPS

ARE NOT SUFFICIENT, SEE

FIGURE OF RECOMMENEDED

CONDENSATE TRAP)

SECONDARY DRAIN REQUIRED

(USE FACTORY KIT OR

FIELD-SUPPLIED TRAP)

A_0_

--) Fig. 16--Condensate Trap and Unit

PROCEDURE 8---EASY SELECT CONFIGURATION TAPS

Easy Select TM taps are used by the installer to configure a system. ICM2 motor uses the selected taps to modify its operation to a pre-programmed

table of airflows. (See Table 3 and 4.) Airflows are based on system size or mode of operation and those airflows are modified in response to other

inputs such as the need for de-humidification, (See Fig, 17 and 18,)

The FV4A Fan Coil most be configured to operate properly with system components with which it is installed. To successfully configure a basic

system (see information printed on circuit board label located next to select pins), move the 6 select wires to the pins which match the components

used.

A. AUX HEAT KWICFM -Select heater range for size of electric heater installed

Installer must select the auxiliary heat airflow approved for application with kw size heater installed. If no heater is installed, this step can be

skipped. Each select pin is marked with a range of heaters for which airflow, also marked, is approved. For increased comfort select the narrownst

kw range matching the heater size, for example, 0-10 for 10-kw heater. This airflow must be greater than the minimum CFM for electric heater

application with the size system installed for safe and continuous operation. (See Table 5 and 6 for airflow delivery and minimum CFM.) Note

that airflow marked is the airflow which will be supplied in emergency heat mode and heating mode on air conditioners when electric heat is the

primary beating source. In heat pump heating mode when electric heaters are energized, the ICM2 will run the higher of heat pump heating airflow

and electric heater airflow to ensure safe heater operation. The factory selection is the largest heater range approved. (See Fig. 17, A as indicated.)

B. AC/HP SIZE - Select system size installed

The factory setting for air conditioner or heat pump size is the largest unit meant for application with the model of fan coil purchased. Installer

needs to select air conditioner or heat pump size to ensure that airflow delivered falls within proper range for the size unit installed. This applies

to all operational modes with the exception of electric heat modes. (See Fig. 17, B as indicated.)

C. SYSTEM TYPE -Select system type installed AC or HP

The type of system must be selected:

1. AC -Air conditioner

2. HP-COMFORT - Heat Pump Comfort provides approximately 315 CFM per ton for higher normal heating air delivery temperature.

Provid6s approximately 350 CFM per ton cooling airflow for good humidity removal.

3. HP-EFF - Heat Pump Efficiency provides same airflow for heating and cooling modes to increase overall HP efficiency; approximately 350

CFM per ton,

The factory setting is AC. (See Fig. 17, C as indicated.)

D. ACtHP CFM ADJUST - Select Medium, Low, or High Airflow

To provide airflow at rates described above, the AC/HP ADJUST select is factory set to the nominal(nom) tap. The adjust selections HIA,O will

regulate airflow supplied for all operational modes, except non-heat pump heating modes. HI provides 15 percent airflow over nominal unit size

selected and IX) provides 10 percent airflow below nominal unit size selected. Adjust selection options are provided to adjust airflow supplied to

meet individual installation needs for such things as noise, comfort, and humidity removal. (See Fig. 17, D as indicated.)

mll--

LOW VOLTAGETERMINAL BLOCK"_

PRINTED CIRCUIT BOARD--'___

AuxHEATION/CFM R

•SYSTEM TYPE

C o_ _, _ _

L.,!_!..,,L

•AC*_PCF_A[_JUSTI " II{¢u_I G

71 I

O_OFF DELAy

_5275

Fig. 17--Detail of FV4A Printed-Circuit Board

E. ON/OFF DELAY -Select desired time delay profile

Four motor operationdelay profdesare provided to customizeand enhancesystemoperation.(See Fig. 17, Eas iadicated)

Selection optionsare:

1. The standard 90 sec off delay (Factory setting) at 100 percent airflow.

2. No delay option used for servicing unit or when a thermostat is utilized to perform delay functions.

3. A 30 sec on delay with no airflow/90 sec off delay at 100 percent airflow profile is used when it is desirable to allow system coils time

to heat-up/cool-down in conjunction with the airflow.

4. ENH, enhanced selection, provides a 30 sec on delay with no airflow/pins 150 sec at 70 percent airflow/no off delay for added comfort.

This profile will minimize cold blow in heat pump operation and could enhance system efficiency.

F. CONTINUOUS FAN -Select desirecl fan speed when thermostat is set on continuous fan

NOTE: If installed with a 2-speed outdoor uniL do not select HI speed continuous fan. If HI is selected, low speed compression will also run HI

speed possibly resulting in insufficient dehumidification.

1. LO speed - factory setting, 50 percent cooling mode airflow.

2. MED speed - move connector to MED, 65 percent cooling mode airflow.

3. HI speed - move connector of HI, 100 percent cooling mode airflow. (See Fig. 17, F as indicated.)

G. Low-Voltage Circuit Fusing and Reference

The low-voltage circuit is fused by a board-mounted 5-amp automotive fuse placed in series with the transformer SEC2 and the R circuit. The C

circuit of the transformer is referenced to chassis ground through a printed circuit run at SECt connected to metal standoff marked with ground

symbol.

H. Basic Fan Coil Configuration

The following basic configuration of the fan coil will provide ARI rated performance of the heat pump:

1. AUX HEAT KW/CFM - Select the heater range for the size electric heater installed.

2. AC/HP SIZE - Select system size installed.

3. SYSTEM TYPE - Select system type HP-EFF.

4. AC/HP CFM ADJUST - Select NOM.

5. ON/OFF DELAY - Select 0/90 profile.

6. CONTINUOUS FAN - Select desired fan speed when thermostat is set to continuous fan.

L COMFORT OPTIONS - WARMER HEATING AND SUPER DEHUMIDIFY (See Fig. 21 for Quick Reference Guide)

The FV4A Fan Coll provides better than average humidity control and heated air temperature. This configuration will improve the comfort

provided by the heat pump system ff more humidity removal or ff warmer heating air is desired. While providing this improved comfort, the heat

pump system will operate efficiently, but not at the published HSPF or ARI SEER efficiency.

m12--

ELECTRIC HEAT CONNECTOR

A95275

Fig. 18_PCB Wiring Arrangement

The following fan coil configuration is recommended for maximum heating and cooling/dehumidifying comfort: (See Fig. 17.)

1. AUX HEAT KW/CFM -Select narrowest heater range to match size of electric heater installed (skip this step if no heater is installed).

2. AC/HP SIZE - Select system size installed.

3. SYSTEM TYPE - Select system type HP-COMFORT (for heat pump system) or AC (for air conditioner system).

4. AC!HP CFM ADJUST -Select LO.

5. ON/OFF DELAY -Select ENH profile.

6. CONTINUOUS FAN - Select desired fan speed when thermostat is set to continuous fan.

7. If the fan coil is installed with Intelligent Heat Staging capable electric heaters, remove jumper J2. (See Fig. 17.)

NOTE: If configuring to run warmer heating, do not remove jumper J2 when using 5-, 8-, or 10-kw heaters.

8. Remove jumper J1 to activate dehumidify modes.

9. Wire low voltage connections as shown in Fig. 9, 10, I I, or 12.

10. Configure Thermidistat (or capable zoning system) following its installation instructions for Super Dehumidify operation.

This configuration provides die following comfort enhancements:

a. A 30 second blower on delay with 150 seconds at 70 percent airflow to allow die indoor coil to warm up or cool down before the blower

is asked to deliver 100 percent airflow reducing the cold blow sensation at start upin heating and allowing the indoor coil to more quickly

reach wet coil operating conditions in cooling.

b. No blower off delay eliminates cold blow winch may be associated with running die blower after shut down of the compressor and avoids

re-evaporation of condensed moisture after cooling/dehumidifying operation.

c. Lower airflow while the compressor is running to reduce draft effects and increase heating air temperature and hnproved humidity cona'ol

daring cooling operation.

--13---

d.Intelligent Staging of the electric heater elements to more closely match heating load _;luiroments and provide more consistent heating

air temperatures.

PROCEDURE g--ACCESSORY INSTALLATION

A. Accessory Electric Heaters

Electric heaters may be installed with the FV4A Fan Coil per instructions supplied with electric heater package. See unit rating plate for

factory-approved electric heater kits.

NOTE: Units installed without electric heat should have a field-supplied sheet metal block-off plate covering the heater opening. This reduces

air leakage and formation of exterior condensation.

B. Auxiliary Terminals

The AUX and HUM terminals on the Easy Select Board are tied direcdy to the G terminal, and provide a 24-vac signal whenever the G terminal

is energized. (See Fig. 17 and 18.) During Superdehumidify mode, the G signal is not present and the auxiliary terminals are not energized. If the

installation includes the use of this operating mode, do not use these terminals to control accessories. See Electronic Air Cleaner and Humidifier

sections for further information.

C. Electronic Air Cleaner Connections

The AUXI and AUX2 terminals are not always energized during blower operation, as described above. When using an electronic air cleaner with

the FV4A Fan Coil, use Airflow Sensor part No. KEAAC0101AAA. The airflow sensor turns on electronic air cleaner when the fan coil blower

is operating.

D. Humidifier/Humidistat Connections

Easy Select Board terminals HUM1 and HUM2 are provided for direct connection to the low-voltage control of a humidifier through astandard

humidistat. (See Fig. 19.) These terminals are energized with 24vac when G thermostat signal is present. (See Fig. 20.) Alternately, the 24-vac

signal may be sourced from the W and C terminal block connections when electric heaters are used as primary heating source. When using a

Thermidistat TM Control, Zone Perfect Plus or Comfort Zone II, the 24-vac signal may be sourced directly from the Thermidistat HUM terminal.

(See Fig. 9, 10, 11, and 12.)

HUMIDISTAT

HUM 1

(c)

HUM 2

(G)

2_VAC tTO HUMIDIFIER

HUMIDIFIER WIRING

A95317

Fig. 19_Humidifier Wiring

EASY SELECT

BOARD TERMINAL

BLOCK

J1

REMOVE -_

JUMPER

IUI4 I----

IR;----

.... 1

---- HUMIDISTAT

I

.... J

A95316

Fig. 20_Humidistat Wiring for De-Humidify Mode

E. Dehumidify Capability with Standard Humidistat Connection

Latent capacities for systems using the FV4A Fan Coil are better than average systems. If increased latent capacity is an application requirement,

the field wiring terminal block provides connection terminals for use of a standard humidistat. The FV4A Fan Coil will detect the humidistat

contacts opening on increasing humidity and reduce its airflow to approximately 80 percent of nominal cooling mode airflow. This reduction will

increase the system latent capacity until the humidity falls to a level which causes the humidistat to close its contacts. When the contacts close,

the airflow will return to 100 percent of the selected cooling airflow. To activate this mode, remove Jumper Jl and wire in a standard humidistat.

(See Fig. 20.)

F. Dehumidify and Super Dehumidify Capabilities

This model fan coil is capable of responding to asignal from indoor system control (thermostaL Thermidistat, zoning control) to operate in comfort

control modes such as Super Dehumidify Mode. Consult literature provided with indoor system control to determine if these operating modes are

available, and to see control set up instructions. No special setup or wiring of fan coil is required.

PROCEDURE 10_FV4A FAN COIL SEQUENCE OF OPERATION

The FV4A will supply airflow in a range which is more than twice the range of a standard fan coil. It is designed to provide nominal cooling

capacities at a50°F evaporator tempemtare and the required airflow which enables it to match with 4 air conditioner or heat pump system sizes.

Table 2outlines the CFM range for the different FV4A Fan Coil sizes.

--14--

FAN COIL SIZE

FV4ANF002

FV4ANF003

FV4ANF005

FV4ANB006

Table 2_FM Range for FV4A Units

SYSTEM SIZES CFM RANGE

024, 030, 036 450-1275

024, 030, 036, 042 525-1475

036, 042, 048 550-1700

042, 048, 050 550-2150

A. Continuous Fan

• Thermostat closes circuit R to G.

•The blower runs at continuous fan airflow.

B. Cooling Mode - Single speed

If indoor temperature is above temperature set point and humidity is below humidity set poinL thermostat closes circuits R to G, R to Y/Y2

and R to O.

•The fan coil delivers single speed cooling airflow.

C. Cooling Mode - Dehumidification

• If indoor temperatam is above temperature set point and humidity is above humidity set point, thermostat or Thernlidistat TM closes circuits R

to G, R to O, and R to Y/Y2, and humidistat or Tbermidistat opens R to DH.

•The fan coil delivers airflow which is approximately 80 percent of the nominal cooling airflow to increase the latent capacity of the system.

D. Cooling Mode -Super Dehumidify Operation (See Fig. 22 for Quick Reference Guide)

NOTE: The indoor control used, such as ThermidistaL must be capable of providing Super Dehumidify operation mode and control must be

configured as outlined in its installation instructions. Consult indoor control literature to determine if control is capable of providing Super

Dehumidify inputs and for configuration instructions.

If the indoor temperature is below the temperature set point and the humidity is above the humidity set point, the Thermidistat closes circuit R

to O, opens circuits R to DH and R to G, and cycles circuit R to Y/Y2 (for single speed system R to YI, or R to YI and Y/Y2 for 2-speed system).

The ICM2 motor reads the G signal to the fan coil while the heat pump is operating, (circuit R to Y/Y2 for single speed system, R to Y1 or R

to Y1and Y/Y2 for 2-speed system), closed (24 vac). If circuit R to G is closed (24 vac), the motor will deliver airflow at the full cooling or cooling

plus dehumidify mode requested value. If circuit R to G is open (0 vac) for super dehumidify mode, the motor delivers reduced airflow to maximize

the humidity removal of the system while minimizing overeooling.

E. Electric Heat Heating Mode

•Thermostat closes circuit R to W/WL or W2.

• The fan coil delivers the selected electric heat airflow.

g. Heat Pump Heating Mode - Single speed

• Thermostat closes circuits Rto G and R to Y/Y2.

• The fan coil delivers single speed heat pump heating airflow.

G. Heat Pump Heating with Auxiliary Electric Heat

Thermostat closes circuits R to G, R to Y/Y2 and/or R to Y1 with R to W/W1 or W2 (and R to O in the case of defrost).

In the event that electric heating is called for by the thermostat while the beat pump is also operating in either heating or defrost modes, the motor

will modify its airflow output, if necessary, to provide an airflow which is def'med as safe for the operation of the electric beater during heat pump

operation. That airflow is the greater of the heat pump beating airflow and the electric heater only airflow.

PROCEDURE 11--TROUBLESHOOTING ICM MOTOR AND CONTROLS

CAUTION: High voltage is always present at motor. Disconnect power to unit before removing or replacing

connectors or servicing motor. Wait at least 5 min after disconnecting power before opening motor.

The ICM motor used with this product contains two parts: the control module and motor winding section. Do not assume the motor or module

is defective if it will not start. Go through the steps described below before replacing control module, Easy Select Board or entire motor. The

control module is available as a replacement part.

A. If motor turns slowly:

i

1. Replace panel. Motor may appear to run slowly if access panel is removed.

2. It is normal operation to run noticeably slower if G terminal is not energized in cooling or beat-pump modes.

B. ff motor does not run:

Turn off power and check the following:

1. Check 5 amp fuse on Easy Select Board.

2. Check for 24vac on SEC1 and SEC2. If no voltage is present, check transformer.

3. Check all plugs and receptacles for any deformation which could cause loose connections. Be sure plugs are fully seated.

--15---

Table 3_FV4A Fan Coil Airflow Delivery (CFM) in Cooling Mode

tlN1T

SIZE

002

003

005

0O6

NOTE

OUTDOOR

UNIT

CAPACITY

018

024

030

036

024

030

036

042

030

036

042

048

036

042

048

060

Single-Speed

Application

Nominal A/C

A/C Cooling

Cooling Dehumidity

525 420

700 560

875 700

1050 840

700 560

875 700

1050 840

1225 980

875 700

1050 840

1225 980

1400 1120

1050 840

1225 980

1400 1120

1750 1400

OPERATING MODE

Two-Speed

Application

High Speed

Nominal A/C

A/C Cooling

Cooling Dehumidity

1100 880

1100 880

1100 880

1470 1175

11130 880

1470 1175

1835 1470

Low Speed

Nominal A/C

A/C Cooling

Cooling Dehumldity

680 545

680 545

680 545

910 725

745 595

995 795

1240 995

1. The abovealrltews result withthe AC/HP CFM ADJUST selectjumperseton NOM.

2. Airflowcanbe adjusted+15 percentor-10 percent by selectingHI or LO respectivelyfor all modes exceptfan only.

3. Dry coilat 230 voltsand with10kwheater andfl_terirtstalled.

4. Airflowsshownare at standardairconditions.

Table 4---FV4A Fan Coil Airflow Delivery (CFM) in Heat Pump Only Heating Mode

OPERATING MODE

Two-Speed

Application

FAN ONLY

LO/MED/HI

350/350/525

350/455/700

440/570/875

525/680/1050

4151455/700

440/570/875

525/680/1050

610/795/1225

440/570/875

525/680/1050

610/795/1225

700191011400

525/745/1050

610187011225

700/995/1400

87511240/1750

UNIT

SIZE

0O2

0O3

005

O06

OUTDOOR

UNIT

CAPACITY

018

024

030

036

024

O30

036

042

030

036

042

048

036

042

048

060

Single-Speed

Application

Heat Pump Heat Pump

Comfort Efficiency

525 420

700 560

875 700

1050 840

700 560

875 700

1050 840

1225 980

875 700

1050 840

1225 980

1400 1120

1050 840

1225 980

1400 1120

1750 1400

High Speed

Heat Pump Heat Pump

Comfort Efficiency

990 1100

990 1100

990 ll00

1320 1470

990 It00

1325 1470

1655 1835

Low Speed

Heat Pump Heat Pump

Comfort Efficiency

615 680

615 680

615 680

820 910

670 745

895 995

1120 1240

NOTE

1. The above airflows result with the AC/HP CFM ADJUST select jumper set on NOM.

2. Airflow can be adjusted +15 percent or -10 peccent by selecting HI or LO respectively fo¢ ell modes except fan only.

3. Dry coil at 230 volts and with t0kw heater and filter installed.

4. Airflows shown are at standard air conditions.

FAN ONLY

LO/MEDtHI

350/350/470

350/410/630

440/510/785

525/615/945

41514151630

440/510/785

525/615/945

610/715/1100

440/510/785

525/615/945

610/715/1100

700/820/1260

525/670/945

610/780/1100

700/895/1260

875/1120/1575

4. Verify that approximately 230vac is present at motor.

5. Verify low-voltage control signals to motor. The motor receives its control signals through the 12-pin plug (PL-I) on Easy Select Board

and 16-pin plug on wiring harness. (See Troubleshooting Example.) The combinations of pins energized will determine motor speed. (See

Fig. 20.) See Table 7for circuit board, low-voltage screw terminals energized and for voltage present at each pin on 12-pin plug (PL-I).

See Table 7 for pin number on 16-pin plug which should have voltage when Easy Select Board screw ternunals have 24vae.

C. Use following procedure to check control signals:

THERMOSTAT

1. Remove all thermostat wires from Easy Select Board.

2. Jumper screw terminals (I at a time): R-G, R-Y/Y2. R-Y I, R-WI. If motor mns in all cases, thermostat is miswired, contignredincmrecfly

or defective. If motor runs in some cases, but not others, continue to check wiring harness and circuit board.

--1_-

Table 5--F'V4A Airflow Delivery (CFM)

OUTDOOR

FAN UNIT

UNIT CAPACITY

SIZE BTUH

18,000

24,000

002 30.(300

36.000

24,000

30,000

003 36,000

42,000

OUTDOOR

FAN UNIT

UNIT CAPACITY

SIZE BTUH

30,0_0

36,000

005 42,000

48.000

36.000

42,000

006 48.000

60,000

ELECTRIC HEATER KW RANGE

0-5 0-10 0-15 0-20

LO NOM HI LO NOM HI LO NOM HI LO NOM HI

625 625 625 675 675 675 * * * * * *

650 725 835 * 725 835 875 875 875 * * *

815 905 1040 *905 1040 900 900 1040 1100 1100 1100

980 1085 1250 980 1085 1250 980 1085 1250 I100 1100 1250

675 725 835 875 875 * * * * *

815 905 1040 875 905 1040 11130 1100 1100 * * *

980 1085 1250 980 1085 1250 1100 11(30 1250 1225 1225 1250

1140 1270 1460 1140 1270 1460 1140 1270 1460 1225 1270 1460

ELECTRIC HEATER KW RANGE

0-10 0-15 0-20 0-30

LO NOM HI LO NOM HI LO NOM HI LO NOM HI

975 975 1040 1100 1100 1100 * * *** *

980 1085 1250 1100 1100 1250 1250 1250 1250 * * *

1140 1270 t460 1140 1270 1460 1250 1270 1460 1500 1500 1500

1305 1450 1665 1305 1450 1665 1305 1450 1665 1500 1500 1665

1100 1100 1250 1350 1350 t350 ******

1140 1270 1460 1350 1350 1460 1525 1525 1525 * * *

1305 1450 1665 1350 1450 1665 1525 1525 1665 1750 1750 1750

1630 1810 2085 1630 1810 2085 1630 1810 2085 1750 1810 2085

* AiR,ow not recommended for heater/system size.

NOTE: LO, NOM, and HI refer to AC/HPCFM ADJUST selection.

FAN

COIL

UNIT

002

003

005

OO6

NOTES:

Table 6---FV4A Minimum CFM for Electric Heater Application

ItEAT PUMP

UNIT

SIZE

Heater Only

018

024

030

036

Heater Only

024

030

036

042

Heater Only

030

036

042

048

Heater Only

036

042

048

060

5

625

625

650

80O

970

675

675

800

975

1125

675

8OO

975

1125

1305

1050

1100

1125

1300

t625

CFM

HEATER SIZE KW

8, 9, 10 15

625 725

625

725 875

875 875

970 970

700 1050

875 1050

875 1100

975 1100

1125 1125

700 1050

875 11(30

975 11130

1125 1125

1305 1305

1050 1050

1100 1350

1125 1350

1300 1350

1625 1625

18,20

875

1040

1040

1050

1225

1225

1050

1225

1225

1305

1050

1350

1350

1465

1750

24, 30

1400

1400

1750

1750

1750

ml7D

1. Heater Only-Air conditioner with electric heater application.

2. 111ese airflows are minimum acceptable airflows as OL listed. ActuaJ airflow delivered will be per airflow delivery chart for Electric Heating Modes.

WIRING HARNESS

1. Shut off power to unit; wait 5rain.

2. Remove 5-pin plug from motor.

3. Remove 16-pin from motor.

4. Replace 5-p'm plug and turn power on.

5. Check for appropriatevoltageson 16-pin connector with screw terminals jumperod. (See Table 7 for values and see examples below.)

If signals check correctly and motor does not run, inspect wiring harness for loose pins or damagedplastic that could cause poor connections. If

connections are good, either control module or motor is defective.If proper signals are not present, check circuit board using procedure below:

PIN 12

J1 JUMPER - PULL FOR

DEHUMIDIFiCATiON CONTROL--

J2 JUMPER - PULL FOR--

HEATSTAGING

EASY SELECT TM

AUX HEAT I,;WK_M

AC_P S_

;I 71;I °i tl

sysn_M lly,t_E

zIW'lw'

I_oo_"_ ooo"_ oo_'"_ _

'_ ____

12-PIN CONNECTOR \

(PL-1) PIN 1

i OW VOLTAGE SCREW TERMINALS

-- DEHUMIDIFICATION INPUT

--Z ZEATSTAGEt

-- AUXILIARY HEAT STAGE 2

-- LOW SPEED COMPRESSOR

-- SINGLE OR HI SPEED COMPRESSOR

_RFALRSING VALVE

-- COMMON

%I IBIT1DITII I

I_ J

16-PIN PLUG

Fig. 21_Control Signals (Easy Select Board & 16-Pin Plug)

A00114

Table 7--Wiring Connections of FV Fan Coil Wiring Harness

I6-LNPLUG ON WIRING HARNESS TO MOTOR WIRING HARNESS CONNECTION TO EASY SELECT BOARD

Signal on Pin with

Pin 3 on 12-Pin Plug Wire Color Screw Terminal

Pin # on 16-Pln Plug Description or Set-up Selection JILrllpei'ed to R*

1Cowmon Pin 9on PL-I Brown

2WI Auxiliary Heat Stage 1 Pin 7 on PL-I Violet 24VAC**

3Common Pin l0 on PL-1 Orange

4 On/Off Delay Selection On/Off Delay Selection White

5AC/HP Size Selection AC/HP Size Selection Blue

6 YI Low Speed AC or HP pin 3on PL-1 Black (-) 12VDC**

AC/HP CFM Adjust AC/HP CFM Adjust Black

7 Selection Selection

8Not Used N/A Not Used

9System Type Selection System Type Selection Orange

10 Dehumidify Pin 12 on PL-I Gray 0V (24VAC on no call)

Aux Heat Size Aux Heat Size

11 Violet

Selection Selection

12 24v AC Pin 8 on PL-I Red 24VAC continuous

13 W2 Auxiliary Heat Stage 2 Pin 4on PL-I White 24VAC**

Single Speed AC or

14 Y/Y2 HP, High Speed Pin 2 on PL-I Yellow (-) 12VDC**

2-Speed AC or HP

15 G Fan Pin I on PL-1 Green 24VAC**

16 Not Used N/A Hot Used

"Check voltages with 16-Pin Plug disconnected from motor.

"* These signals will start motor.

12-PIN PLUG (PL-1) ON EASY SELECT BOARD

1. Unplug harness from board.

2. Check for appropriate voltages on pins with Easy SelectBoardscrew terminals jumpered. (See Table7for values and see example below.)

If proper signals am not present, replaceEasy Select Board. If present at board and not at 16-pin connector, wiring harnessis defective.

TROUBLESHOOTING EXAMPLE:

Motor is not runningon a call for beat-pump heating.System is asingle-speed beat pump.

I. After performing checks in Thermostatsection, follow steps 1 thai 5 in WiringHarnesssection. Thenproceed with example.

--18---

_/

LOW VOLTAGE TERMINAL BLOCK "_.

EASY SELECT TM IIll _

AC_HP CFM AOJUST G

C_F _v 0

F "_! •uoL_FAN

/.MOLEX 12-PIN CONNECTOR

I.ConfigurationT aps

(See InstallationInsuuctions,fordetailed description.)

A. AUX HEAT - Set for beater size (Ex: 0-10 for 10 kw)

B. AC/HP SIZE - Set for size of outdoor unit

C. SYSTEM TYPE - Select "HP COMFORT"

D. ACfliP CFM ADJUST - Sel_t "LO"

E. ON/OFF DELAY -Select "ENH"

F. CONTINUOUS FAN - Select desLmd speed

2. [nslall heater with Intelligent Heat Staging.. and remove

Jumper J2. except when using 5-. 8-. or 10-kw bearer.

3. Remove Jumper Jlm acdvate all dehumidify modes.

4. Complete wiring and install outdoor temperature sensor

according to Installation Instructions.

I. Set "DIP Switches" -Set the dip switches (back of Tbermidistat

Control Board) appropriately for specific system being installed.

2. Tbemaidistat Control Coatimgunradons

(See"rhernuths_{TM Contro]lnstalJadon [.sL,1lellons for

detailed description.)

•Option 5(Variable Speed Motors) - set to ON

• Opdon 7(Super Dehumidifyt ÷set to ON

-Opdon 9 (Intelligent Heat) -set to ON if installing with

asingle speed heat pump

• option 12 (Heaters during De fros0 - setting "2" is

suggested for all heaters

• opdon 16 - On R-22 systems set to ON for warmer heat

below 40 ° F. For Puron appHcatlons, set to OFF.

•Option 17 -Select progranmaable or non-programmable mode.

3. Set desired humidity level on front of Thetmldistat

(50 to 55% RH recomn_ndggl). For dehumidification in

cooling, both "dhu" and "cool" must be displayed. J

A98510

Fig. 22_et-Up Instructions for Warmer Heating Temperatures and Super Humidity Control in Cooling

2. With all thermostat wires removed from Easy Select Board, place a jumper wire between R and Y/Y2 low-voltage screw terminals on the

Easy Select board.

3. Check Table 7 for pin number on 16-pin connector associated with the Y/Y2 signal. The correct pin is #14. The far fight column shows

that (-) 12vdc should be present between pin #14 and pin #1 (common) on the 16-pin connector.

4. Set meter to read DC voltage. Place meter between pins #1 and #14 and cheek for (-) 12vdc (common side of meter on pin #1). If signal

is present, the problem is in the module or motor. If signal is not, problem is either in wiring harness or Easy Select Board.

These steps can be repeated for other modes of operation.

To check Easy Select Board:

1. Leave jumper wire in place between R and Y/Y2.

2. Check Table 7 under "Wiring Harness Connection to Easy Select Board" column and row for pin #14 to see pin# on Easy Select Board

that should have voltage. The correct pin is #2. The column on far fight will show voltage that should be present between pin #2 and #9

(or #10 common).

3. Place meter between pins #2 and #9 on Easy Select Board and check for (-) 12vdc.

4. If voltage is present, the wiring harness is bad; if not, the Easy Select Board is had.

D. Verify Motor Winding Section:

Before proceeding with module replacement, check the following to ensure motor winding section is functional. With control module removed

and unplugged from winding section:

1. The resistance between any 2motor leads should be similar.

2. The resistance between any motor lead and the unpainted motor end plate should be greater than 100K ohms.

If motor winding section fails one of these tests, it is defective and must be replaced.

START-UP PROCEDURES

Refer to outdoor unit InstallationInstructions for system start-upinstructions and refrigerant chargingmethoddetails.

m19--

CARE AND MAINTENANCE

For continuing high performance, and to minimize possible equipment failure, it is essential that periodic maintenance be performed on this

equipment. The only required maintenance that may be performed by the consumer is f'flter maintenance.

Z_ WARNING: Disconnect all power to unit before servicing field wires or removing control package. The disconnect

(when used) on access panel does not disconnect power to the line side of disconnect, but does allow safe service to all

other parts of unit. If unit does not have a disconnect, disregard the foregoing. Instead, make sure that adisconnecting

means is within sight from, and is readily accessible from, the unit. Disconnect all electrical power to unit before performing

any maintenance or service on it. A failure to follow this warning can cause electrical shock, fire, personal injury, or death.

The minimum maintenance requirements for this equipment are as follows:

1. Inspect and clean or replace air tilter each month or as required.

2. Inspect cooling coil, drain pan, and condensate drain each cooling season for cleanliness. Clean as necessary. An inspection port is provided

on all A-coil delta plates. Remove plastic plug to inspect.

3. Inspect blower motor and wheel for cleanliness each heating and cooling season. Clean as necessary.

4. Inspect electrical connections for tightness and controls for proper operation each heating and cooling season. Service as necessary.

Consult Fan Coil Service Manual available from equipment distributor for maintenance procedures.

Z_ WARNING: As with any mechanical equipment, personal injury can result from sharp metal edges, etc, therefore, care

should be taken when removing parts.

Using the Owner's/User Manual furnished in outdoor uniL the installing technician should explain system operation to the consumer with particular

emphasis on indoor fan coil operation sounds and filter maintenance.

PURON® QUICK REFERENCE GUIDE FOR INSTALLERS AND TECHNICIANS

•Puron refrigerant operates at 50-70 percent higher pressures than R-22. Be sure that servicing equipment and replacement components are

designed to operate with Puron.

•Puron refrigerant cylinders are rose colored.

•Recovery cylinder service pressure rating must be 400 psig, DOT 4BA400 or DOT BW400.

• Puron systems should be charged with liquid refrigerant.

•Use a commercial type metering device in the manifold hose.

Manifold sets should be 750 psig high-side and 200 psig low-side with 520 psig low-side retard.

Use hoses with 750 psig service pressure rating.

Leak detectors should be designed to detect HFC refrigerant.

Puron, as other HFC's, is only compatible with POE oils.

Vacuum pumps will not remove moisture from oil.

Do not use liquid-line filter driers with rated working pressures less than 600 psig.

Do not install a suction-line fdter drier in liquid line.

POE oils absorb moisture rapidly. Do not expose oil to atmosphere.

POE oils may cause damage to certain plastics and roofing materials.

Wrap all filter driers and service valves with wet cloth when brazing.

A liquid-line filter drier is required on every unit.

Do not use an R-22 TXV.

If indoor unit is equipped with an R-22 TXV, it must be changed to a Puron TXV.

Never open system to atmosphere while it is under a vacuum.

When system must be opened for service, break vacuum with dry nitrogen and replace filter driers.

DO not vent Puron into the a_anosphere.

Do not use capillary tube indoor coils.

Observe all warnings, cautions and bold text.

O2002 CAC/BDP 7310 W. Monis St., Indianapolis. IN 46231 imfv4a05 --20--- Book/Tab: 1/4,3di2e Catalog No. 63FV-4A4