CARRIER Package Units(both Units Combined) Manual L0912106

User Manual: CARRIER CARRIER Package Units(both units combined) Manual CARRIER Package Units(both units combined) Owner's Manual, CARRIER Package Units(both units combined) installation guides

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Page Count: 44

Irn ®

to the Expertg_

Installation Instructions

NOTE: Read the entire instruction manual before starting

the installation

TABLE OF CONTENTS

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

INSTALLATION ............................... 5

Step 1 - Plan for Unit Location .................. 5

Step 2 - Plan for Sequence of Unit Installation ...... 6

Step 3 - Inspect Unit ........................... 6

Step 4 - Provide Unit Support ................... 6

Step 5 - Field Fabricate Ductwork ................ 8

Step 6 - Rig and Place Unit ..................... 8

Step 7 - Convert to Horizontal and Connect

Ductwork ............................ 9

Step 8 - Install Outside Air Hood ................ 9

Step 9 - Install Flue Hood ..................... 10

Step 10 - Install Gas Piping .................... 11

Step 11 - Install External Condensate Trap

and Line ........................... 13

Step 12 - Make Electrical Connections ........... 13

Step 13 - Humidi-MiZer TM--

Space RH Controller .................. 37

Step 14 - Adjust Factory-Installed Options ........ 43

Step 15 - Install Accessories ................... 43

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

instructions packaged with the kits or accessories when

installing.

Follow all safety codes. Wear safety glasses and work

gloves. Use quenching cloths for brazing operations and

have a fire extinguisher available. Read these instructions

thoroughly and follow all warnings or cautions attached to

the unit. Consult local building codes and appropriate

national electrical codes (in USA, ANSI/NFPA70,

National Electrical Code (NEC); in Canada, CSA C22.1)

for special requirements.

It is important to recognize safety information. This is the

safety-alert symbol A'x. 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,

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 or

death. WARNING signifies hazards 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.

FIRE,EXPLOSIONHAZARD

Failuretofollowthiswarningcouldresultinpersonal

injuryordeath.

Disconnectgaspipingfromunitwhenleaktestingat

pressuregreaterthan0.5psig(3450Pa).Pressures

greaterthan0.5psig(3450Pa)will causegasvalve

damageresultinginhazardouscondition.If gasvalve

is subjectedto pressuregreaterthan0.5psig(3450

Pa),it mustbereplacedbeforeuse.Whenpressure

testingfield-suppliedgaspipingat pressuresof 0.5

psig(3450Pa)orless,aunitconnectedto suchpiping

mustbeisolatedbyclosingthemanualgasvalve.

ELECTRICALSHOCKHAZARD

Failure to follow this warning could cause personal

injury or death.

Before performing service or maintenance operations

on unit, always turn oft" main power switch to unit and

install lockout tag. Unit may have more than one

power switch.

PERSONAL INJURY AND ENVIRONMENTAL

HAZARD

Failure to follow this warning could cause personal

injury or death.

Relieve pressure and recover all refrigerant before

system repair or final unit disposal.

Ware safety glasses and gloves when handling

refrigerants. Keep torches and other ignition sources

away from refrigerants and oils.

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

equipment.

UNIT OPERATION AND SAFETY HAZARD

Failure to follow this warning could cause personal

injury, death and/or equipment damage.

Puron ® (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.

NOTES:

1 DIMENSIONS ARE IN INCHES, DIMENSIONS

IN [ ] ARE IN MILLIMETERS

2 _ CENTER OF GRAVITY

3 _ DIRECTION OF AIR FLOW

44

[111_]

18 f

[41

16 !/8 14 1/4 12 //4

[411] [563] [512]

N _L 4 B/8

/[1/8]

fELECTRICAL

DISCONNECT

32 1/4

[818]

Lc

,Z

[lO0]

53 3/8

E848]

ECONOMIZER HOOD

(OPTIONAL}

ik RE'TURN AIR

2B 5/8

[652]

E ALT l_iil l

CONDENSATE

GRAIN OPENING

IN 8ASERAN

6 1/4

I 12 1/8

_FLUE [307]

HOOD _ 18 !/2

TOP E_Yo]

f

16

[406]

10 718

[277] _

RETURN

AIR

26 //2 [747] SUPPLY

[B71B]IAR

B 3/B

[85]

B 3/4

[95]

[1!87]

LEFT

CONTROL BOX INDOOR 8LOWER

ACCESS PANEL ACCESS

DISCONNEcTOPTIONAL--'__FACTORY

INSTALLED

_oo _ __ _: "

Bs/B-- I_ HANDLE_ LBs,8

[67] [213]

TYP

CURB _ 30 1/8

[1888]

o6

FRONT

AIR RIGHT AIR

BAROMETRICRELIEF FLOW

FILTER ACCESS PANEL

(TOOL LESS} COMP

ACCESS CONDENSER

COIL

PANEL

INDOOR COIL

ACCESS PANEL

BACK

Vertical Connections /Economizer

!1 B/8

[289]

B //8

[155]

t

E1 E1

_oo " :_ _ 'DO

Horizontal Connections /Economizer

CONNECTION SIZES

A 3/8 II [55] DIA FIELD POWER SUPPLY HOLE

8 2" [BO] BIA POWER SUPPLY NROCNOUT

C 3/4" [B1] DIA GAUGE ACCESS PLUG

D7/811 [22] DIA FIEL8 CONTROL WIRING HOLE

E 314" 14 NPT cONDENSATE DRAIN

F liB" 14 NPT GAS CONNECTION

8 B llZ II [64] 81A POWER sUPPLY NNOCK OUT

THRU THE BASE CHART

THESE HOLES REQUIRED FOR USE CRBTMPWROOIAOl, OOBAOl

THREADED CONDUIT SIZE WINE USE REQ'D HOLE SIZES (MAX)

lIB II A_C 7/8" [22Z]

1/211 24V //811 [222]

Y¢ 3/411 (OO/,OO3) POWER / !/8" [284]

Z@* {003) ]12 II FPT GAS 1 3116 II [300]

FOR "THRU THE BASEPAN" FACTORY OPTION,

FITTINGS FOR ONLY ×,Y, & Z ARE PROVIDE8

SELECT EITHER B/4" OR I/2"

÷ FOR POWER, DEPENDING OR WIRE SIZE

÷÷ (OOl} PROVIGES 3/4" FPT THRU CURB

FLANGE & FITTIRG

UNIT !8 %/8

48TC AB4 [B47] [472]

_urcA0__L?,';,%18

Fig. 11Unit Dimensional Drawing

C09303

STD UNIT CORNER CORNER CORNER CORNER C.G. HEIGHT

UNIT WEIGHT WEIGHT (A) WEIGHT (B) WEIGHT (C) WEIGHT (D)

LBS. KG, LBS. KO. LBS. KG. LBS, KG. LBS, KG. X Y Z

48TC-A04 483 219 111 50 125 57 131 59 116 53 59 [991] 25 [584] 16 3/8 [416]

48TC-AO5 557 244 124 56 I39 63 145 66 129 59 59 [991] 23 [584] 17 [432]

48TC-A06 569 258 131 59 147 67 154 70 137 62 59 [991] 25 [584] 17 1/4 [458]

48TC-A07 652 296 150 68 169 76 176 80 157 71 39 [991] 23 [584] 20 1/8 [511]

CORNER A CORNERB

CORNERO

L@,

0

@

" CORNERC

× --

TOP

,:]oo

E_

FRONT

Fig. 1-Unit Dimensional Drawing (cont.)

1

i

C09304

INSTALLATION

Jobsite Survey

Complete the following checks before installation.

1. Consult local building codes and the NEC (National

Electrical Code) ANSI/NFPA 70 for special installa-

tion requirements.

2. Determine unit location (from project plans) or select

unit location.

3. Check for possible overhead obstructions which may

interfere with unit lifting or rigging.

Step 1 -- Plan for Unit Location

Select a location for the unit and its support system (curb

or other) that provides for the minimum clearances

required for safety. This includes the clearance to

combustible surfaces, unit performance and service access

below, around and above unit as specified in unit

drawings. See Fig. 2.

<

_42" (1067) J

J

_. jJ

.//

1 Required bottom condensate drain connection.

Otherwise, 36" (914mm) for condensate connection.

C07459

Fig. 2 - Service Clearance Dimensional Drawing

NOTE: Consider also the effect of adjacent units.

Be sure that unit is installed such that snow will not block

the combustion intake or flue outlet.

Unit may be installed directly on wood flooring or on

Class A, B, or C roof-covering material when roof curb is

used.

Do not install unit in an indoor location. Do not locate air

inlets near exhaust vents or other sources of contaminated

air. For proper unit operation, adequate combustion and

ventilation air must be provided in accordance with

Section 5.3 (Air for Combustion and Ventilation) of the

National Fuel Gas Code, ANSI Z223.1 (American

National Standards Institute) and NFPA (National Fire

Protection Association) 54 TIA--54--84--1. In Canada,

installation must be in accordance with the CANl--B149

installation codes for gas burning appliances.

Although unit is weatherproof, avoid locations that permit

water from higher level runoff and overhangs to fall onto

the unit.

Locate mechanical draft system flue assembly at least 4 ft

(1.2 m) from any opening through which combustion

products could enter the building, and at least 4 ft (1.2 m)

from any adjacent building (or per local code). Locate the

flue assembly at least 10 ft (3.05 m) from an adjacent

unit's fresh air intake hood if within 3 ft (0.91 m) of same

elevation (or per local code). When unit is located

adjacent to public walkways, flue assembly must be at

least 7 ft (2.1 m) above grade.

Select a unit mounting system that provides adequate

height to allow installation of condensate trap per

requirements. Refer to Step 11 -- Install External

Condensate Trap and Line - for required trap dimensions.

Roof mount --

Check building codes for weight distribution

requirements. Unit operating weight is shown in Table 1.

Table 1-Operating Weights

48TC UNITS LB (KG)

Component A04 A05 A08 A07

Base Unit 483 (219) 537 (244) 569 (258) 852 (298)

Economizer

Vertical 50 (23) 50 (23) 50 (23) 50 (23)

Horizontal 80 (38) 80 (38) 80 (38) 80 (38)

Humidi-MiZer T_System 27 (10) 34 (13) 34 (13) 41 (15)

Cu Fins 25 (11) 43 (20) 56 (25) 73 (33)

Powered Outlet 32 (15) 32 (15) 32 (15) 32 (15)

Curb

14-in/356 mm 110 (50) 110 (50) 110 (50) 110 (50)

24-in/610 mm 145 (66) 145 (66) 145 (66) 145 (66)

Step 2 1 Plan for Sequence of Unit Installation

The support method used for this unit will dictate different

sequences for the steps of unit installation. For example,

on curb-mounted units, some accessories must be

installed on the unit before the unit is placed on the curb.

Review the following for recommended sequences for

installation steps.

Curb-mounted installation i

Install curb

Install field-fabricated ductwork inside curb

Install accessory thru-base service connection package

(affects curb and unit) (refer to accessory installation

instructions for details)

Prepare bottom condensate drain connection to suit

planned condensate line routing (refer to Step 11 for

details)

Rig and place unit

Install outdoor air hood

Install flue hood

Install gas piping

Install condensate line trap and piping

Make electrical connections

Install other accessories

Pad-mounted installation i

Prepare pad and unit supports

Check and tighten the bottom condensate

connection plug

Rig and place unit

Convert unit to side duct connection arrangement

Install field-fabricated ductwork at unit duct openings

Install outdoor air hood

Install flue hood

Install gas piping

Install condensate line trap and piping

Make electrical connections

Install other accessories

drain

Frame-mounted installation i

Frame-mounted applications generally follow the

sequence for a curb installation. Adapt as required to

suit specific installation plan.

Step 3 1 Inspect unit

Inspect unit for transportation damage. File any claim

with transportation agency.

Confirm before installation of unit that voltage, amperage

and circuit protection requirements listed on unit data

plate agree with power supply provided.

Step 41Provide Unit Support

Roof Curb Mount i

Accessory roof curb details and dimensions are shown in

Fig. 3. Assemble and install accessory roof curb in

accordance with instructions shipped with the curb.

NOTE: The gasketing of the unit to the roof curb is

critical for a watertight seal. Install gasket supplied with

the roof curb as shown in Fig. 3. Improperly applied

gasket can also result in air leaks and poor unit

performance.

Curb should be level. This is necessary for unit drain to

function properly. Unit leveling tolerances are show in

Fig. 4. Refer to Accessory Roof Curb Installation

Instructions for additional information as required.

Install insulation, cant strips, roofing felt, and counter

flashing as shown. Ductwork ntust be attached to curb and

not to the unit. The accessory thru-the-base power and

gas connection package must be installed before the unit

is set on the roof curb. If field-installed thru-the-roof

curb gas connections are desired, use factory-supplied

1/2-in. pipe coupling and gas plate assembly to mount the

thru-the-roof curb connection to the roof curb. Gas

connections and power connections to the unit must be

field installed after the unit is installed on the roof curb.

If electric and control wiring is to be routed through the

basepan, attach the accessory thru-the-base service

connections to the basepan in accordance with the

accessory installation instructions.

Slab Mount (Horizontal Units Only) i

Provide a level concrete slab that extends a minimum of

6 in. (150 mm) beyond unit cabinet. Install a gravel apron

in front of condenser coil air inlet to prevent grass and

foliage from obstructing airflow.

NOTE: Horizontal units may be installed on a roof curb

if required.

Alternate Unit Support (In Lieu of Curb or Slab

Mount) i

A non-combustible sleeper rail can be used in the unit

curb support area. If sleeper rails cannot be used, support

the long sides of the unit with a minimum of 3 equally

spaced 4-in. x 4-in. (102 mm x 102 mm) pads on each

side.

CONNECTOR

PKG. ACCY.

CRBTMPWROO1A01

CRBTMPWROO3A01

D ALT

B C DRAIN

HOLE

1'-9W16" 1'-4" lS//'

[551] [406] [44.5]

GAS

3/4"[_9}

NPT

1/2" [12.7]

NPT

POWER

3//, [19]

NPT

CONTROL

1/2" [12.7]

NPT

ACCESSORY

POWER

1_,, [12.7]

NPT

ROOFCURB I A I UNIT SIZE

ACCESSORY

CRRFCURB001A01 48TC

2'-0"

CRRFCURB002A01 _ A04-A07

o" B"

[TB]

0'3"

[78]

1" I 7/18" I

[34/] I

T _

O" 0 7/16"

[/1]

(BOLT HEADS)

O" 0 7/16"

LT [11]

A HEAl)}

C

_II "1

I

C#\ j %%

! \ _)4- \ I --- "11

I I _ ii

I

\\ #_#

\1 t. # #

SUPPLY AIR l

OPENING

1" 7 13/16" 1"1 1/8"

EBo_o_;+

I

I

I

I

I

I

I

I

I

I

If

i/

I

I- ..... q

I

I

I

I 2" 7 518"

I [8

I

I

I

I

' F

O' 0 7/+B"

E++]

(BOLT HEM)S)

O' 0 7//6"

++E+U iA

(BOLT

O' 0 I/4"[?]

8

SUPPLY AIR

@

RETURN AIR _.

VIEW "A-A"

#

#

NOTES:

1. Roof curb accessory is shipped disassembled.

2. Insulated panels.

3. Dimensions in [ ] are in millimeters.

4. Roof curb: galvanized steel.

5. Attach ductwork to curb (flanges of duct rest on curb).

6. Service clearance: 4 ft on each side.

Direction of airflow.

7.

8. Connector package CRBTMPWROO1A01 is for

thru-the-curb type gas.

CRBTMPWROO3A01 is for thru-the-base type

gas connections.

TYPICAL (4) S[OES

o' 7/+B _

R[D]D ]NSbLATION

(F]ELD SUPPLIED)

OPENING FOR BABEPAN ENTRY

SERVICE (SEE NOTE #8)

/ O" 2112"

//4 =

1' 4 13/15"

_ [427]

HEAD OF BOLT TO BE ON

INSIDE OF FLANGE

)

Fig. 3 - Roof Curb Details

S' ?SIS" /

[I 705]

NOTE= CAMBR]DGEPORT +SURE LOCK" CORNER

FASTENING DEV]CE IB ACCEPTABLE

ALTERNATE CONSTRUCTION.

C07503

c

UM ALLOWABLE

-"'_--_ DIFFERENCE IN. (MM)

8A-B I B-c [ A-C

0.5" (13) J_ 1.0" (25) [ 1.0" (25)

Fig. 4 - Unit Leveling Tolerances

C06110

Step 5 -- Field Fabricate Ductwork

NOTE: Cabinet return-air static pressure (a negative

condition) shall not exceed 0.35 in. wg (87 Pa) with

economizer or 0.45 in. wg (112 Pa) without economizer.

For vertical ducted applications, secure all ducts to roof

curb and building structure. Do not connect ductwork to

unit.

Insulate and weatherproof all external ductwork, joints,

and roof openings with counter flashing and mastic in

accordance with applicable codes.

Ducts passing through unconditioned spaces must be

insulated and covered with a vapor barrier.

If a plenum return is used on a vertical unit, the return

should be ducted through the roof deck to comply with

applicable fire codes.

A minimum clearance is not required around ductwork.

Step 6-- Rig and Place Unit

Keep unit upright and do not drop. Spreader bars are not

required if top crating is left on unit. Rollers may be used

to move unit across a roof. Level by using unit frame as a

reference. See Table 1 and Fig. 5 for additional

information.

Lifting holes are provided in base rails as shown in Fig. 5.

Refer to rigging instructions on unit.

UNIT DAMAGE HAZARD

Failure to follow this caution may result in

equipment damage.

All panels must be in place when rigging. Unit is not

designed for handling by fork truck.

If using top crate as spreader bar, once unit is set,

carefully lower wooden crate off building roof top to

ground. Ensure that no people or obstructions are

below prior to lowering the crate.

36"- 54"

(914-1371)

SEE DETAIL

POSITION ALL SEAL STRIPS IN PLACE

BEFORE INSTALLING UNIT ON ROOF CURB

AS CLOSE TO THIS END AS POSSIBLE.

"A"

<

DETAIL "A"

UNIT MAX WEIGHT

LB KG IN IN

48TC-A04 520 236 74.38 33.38

48TC-A05 575 261 74.38 33.38

48TC-A06 605 274 74.38 33.38

48TC-A07 690 313 74.38 41.38

A

IVllVl

1888

1888

1888

1888

DIMENSIONS

B

IN MM

39 991

39 991

39 991

39 991

C06005

C

MM

848

848

848

1051

NOTES:

1. Dimensions in ( ) are in millimeters.

2. Hook rigging shackles through holes in base rail, as shown in detail "A." Holes in base rails are centered around the

unit center of gravity. Use wooden top to prevent rigging straps from damaging unit.

3. Unit weights do not include economizer.

Fig. 5- Rigging Details

Before setting the unit onto the curb, recheck gasketing on

curb.

Positioning on Curb --

Position unit on roof curb so that the following clearances

are maintained: 1/4 in. (6.4 ram) clearance between the

roof curb and the base rail inside the front and rear, 0.0 in.

clearance between the roof curb and the base rail inside on

the duct end of the unit. This will result in the distance

between the roof curb and the base rail inside on the

condenser end of the unit being approximately equal to

Fig. 3, section C-C.

Although unit is weatherproof, guard against water from

higher level runoff and overhangs.

UNIT DAMAGE HAZARD

Failure to follow this caution may result in

equipment damage.

All panels must be in place when rigging. Unit is not

designed for handling by fork truck.

Flue vent discharge must have a minimum horizontal

clearance of 4 f! (1220 mm) from electric and gas meters,

gas regulators; and gas relief equipment. Minimum

distance between unit and other electrically live parts" is

48 inches (1220 mm).

Flue gas can deteriorate building materials. Orient unit

such that flue gas will not affect building materials.

Locate mechanical draft system flue assembly at least 48

in. (1220 ram) from an adjacent building or combustible

material.

NOTE: Installation of accessory flue discharge deflector

kit will reduce the minimum clearance to combustible

material to 18 in. (460 ram).

After unit is in position, remove rigging skids and

shipping materials.

Step 7 -- Convert to Horizontal and Connect

Ductwork (when required)

Unit is shipped in the vertical duct configuration. Unit

without factory-installed economizer or return air smoke

detector option may be field-converted to horizontal ducted

configuration. To convert to horizontal configuration,

remove screws from side duct opening covers and remove

covers. Using the same screws, install covers on vertical

duct openings with the insulation-side down. Seals around

duct openings must be tight. See Fig. 6.

Field-supplied flanges should be attached to horizontal

duct openings and all ductwork should be secured to the

flanges. Insulate and weatherproof all external ductwork,

joints, and roof or building openings with counter flashing

and mastic in accordance with applicable codes.

Do not cover or obscure visibility to the unit's informative

data plate when insulating horizontal ductwork.

\\

\\

\\

_M_ REMOVABLE ItORIZONTAL

SUPPLY DUCI OPENING COVER

Fig. 6 -Horizontal Conversion Panels

C06108

Step 8-- Install Outside Air Hood

The outdoor hood components are shipped in a box

located in the unit return air compartment behind the

outdoor-ar opening access panel (or economizer). Access

is through the filter access panel. See Fig. 7.

FILTER ACCESS PANEL

COMPRESSOR

ACCESS PANEL

OUTDOOR-AIR OPENING AND

INDOOR COILACCESS PANEL

C06023

Fig. 7-Typical Access Panel Locations

1. To remove the existing unit filter access panel, raise

the panel and swing the bottom outward. The panel is

now disengaged from the track and can be removed.

2. To remove the component box from its shipping posi-

tion, remove the screw holding the hood box bracket

to the top of the economizer. Slide the hood box out

of the unit. See Fig. 8.

HOOD BOX

BRACKET

/

/

/

/

iI

i I

iI

ii

i I

iI

I

II

/I

i /

I I

0

Fig. 8-Hood Box Removal

C06024

Motorized 2-Position Damper Hood i

1. Assemble outdoor-air hood top and side plates as

shown in Fig. 9. Install seal strips on hood top and

sides. Put aside screen retainer and screws for later

assembly.

2. Fasten hood top and side plate assembly to unit with

screws provided. See Fig. 9.

3. Slide outdoor-air inlet screen into screen track on

hood side plates. While holding screen) in place,

fasten screen retainer to hood using screws provided.

4. Replace filter access panel. See Fig. 7.

SEAL STRIP"-,--,q_ _ SCREEN

RETAINER

HOOD TOP _ _,,,,.,4.,,,,._HOOD SIDE

SEAL STRIP_ _ I _) SCREEN

Ull)j TRACKS

HOO D,,,.,..-,--,-""T_ _ J

S,OE //_

OUTDOOR AIR INLET SCREEN

OUTDOOR-AIR HOOD UNASSEMBLED

HOOD

SIDE

TRACKS FOR AIR

;REEN

HOOD SIDES AND TOP ASSEMBLED

Fig. 9 - Outdoor-Air Hood Details

C07504

2. Swing out indoor coil access panel and insert the

hood sides under the panel (hood top). Use the screws

provided to attach the hood sides to the hood top. Use

screws provided to attach the hood sides to the unit.

See Fig. 11.

33/8"

HOOD DIVIDER

C06026

Fig. 11 - Economizer Hood Construction

3. Remove the shipping tape holding the economizer ba-

rometric relief damper in place.

4. Insert the hood divider between the hood sides. See

Fig. 11 and 12. Secure hood divider with 2 screws on

each hood side. The hood divider is also used as the

bottom filter rack for the aluminum filter.

5. Open the filter clips which are located underneath the

hood top. Insert the aluminum filter into the bottom

filter rack (hood divider). Push the filter into position

past the open filter clips. Close the filter clips to lock

the filter into place. See Fig. 12.

Economizer Hood i

NOTE: If the power exhaust accessory is to be installed

on the unit, the hood shipped with the unit will not be

used and must be discarded. Save the aluminum filter for

use in the power exhaust hood assembly.

1. The indoor coil access panel will be used as the top of

the hood. Remove the screws along the sides and bot-

tom of the indoor coil access panel. See Fig. 10. ALUMINUM

FILTER

SiDE

PANEL

iNDOOR

COIL

ACCESS

PANEL

TOP

PANEL

INDOOR

COiL

PANEL

C06025

Fig. 10 - Indoor Coil Access Panel Relocation

BAROMETRIC

RELIEF

FILTER

CLIP

C06027

Fig. 12 - Economizer Filter Installation

6. Caulk the ends of the joint between the unit top panel

and the hood top.

7. Replace the filter access panel.

Step 9 1 Install Flue Hood

Flue hood is shipped screwed to the basepan beside the

burner compartment access panel. Remove from shipping

location and using screws provided, install flue hood and

screen in location shown in Fig. 13.

10

FLUE OPENING

BLOWER

ACCESS

PANEL

Fig. 13 - Flue Hood Details

C07081

Step 10 -- Install Gas Piping

Installation of the gas piping must be accordance with

local building codes and with applicable national codes.

In U.S.A., refer to NFPA 54/ANSI Z223.1 National Fuel

Gas Code (NFGC). In Canada, installation must be

accordance with the CAN/CSA B149.1 and CAN/CSA

B149.2 installation codes for gas burning appliances.

This unit is factory equipped for use with Natural Gas fuel

at elevations up to 2000 ft (610 m) above sea level. Unit

may be field converted for operation at elevations above

2000 ft (610 m) and/or for use with liquefied petroleum

fuel. See accessory kit installation instructions regarding

these accessories.

For natural gas applications, gas pressure at unit gas

connection must not be less than 4 in. wg (996 Pa) or

greater than 13 in. wg (3240 Pa) while the unit is

operating. On 48TCFA04-A06 (high-heat) units, the gas

pressure at unit gas connection must not be less than 5 in.

wg (1245 Pa) or greater than 13 in. wg (3240 Pa) while

the unit is operating. For liquified petroleum applications,

the gas pressure must not be less than 11 in. wg (2740 Pa)

or greater than 13.6 in. wg (3390 Pa) at the unit

connection.

The gas supply pipe enters the unit at the burner access

panel on the front side of the unit, through the long slot at

the bottom of the access panel. The gas connection to the

unit is made to the 1/2-in. FPT gas inlet port on the unit

gas valve

EQUIPMENT DAMAGE HAZARD

Failure to follow this caution may result in damage

to equipment.

When connecting the gas line to the unit gas valve,

the installer MUST use a backup wrench to prevent

damage to the valve.

Install a gas supply line that runs to the unit heating

section. Refer to the NFPA 54/NFGC or equivalent code

for gas pipe sizing data. Do not use a pipe size smaller

than 1/2-in. Size the gas supply line to allow for a

maximum pressure drop of 0.5-in wg (124 Pa) between

gas regulator source and unit gas valve connection when

unit is operating at high-fire flow rate.

The gas supply line can approach the unit in three ways:

horizontally from outside the unit (across the roof),

thru-curb/under unit basepan (accessory kit required) or

through unit basepan (factory-option or accessory kit

required). Consult accessory kit installation instructions

for details on these installation methods.

Factory- Option Thru-Base Connections --

This service connection kit consists of a 1/2-in NPT gas

adapter fitting (brass), a 1/2-in electrical bulkhead

connector and a 3/4-in electrical bulkhead connector, all

factory-installed in the embossed (raised) section of the

unit basepan in the condenser section.

LOW VOLTAGE

CONNECTOR

HIGH VOLTAGE

CONDUIT

CONNECTOR

BRASS FITTING FOR 3 TO 6 TON UNITS.

STAINLESS STEEL FITTING FOR 7 1/2 TO 12 1/2 TON.

C08015

Fig. 14 - Fittings

The thru-base gas connector has male and female threads.

The male threads protrude above the basepan of the unit;

the female threads protrude below the basepan.

Check tightness of connector lock nuts before connecting

gas piping.

Install a 1/2-in NPT street elbow on the thru-base gas

fitting. Attach a 1/2-in pipe nipple with minimum length

of 16-in (406 mm) (field-supplied) to the street elbow

and extend it through the access panel at the gas support

bracket. See Fig. 15.

EMBOSSMENT BRASS FITTING SUPPORT

FOR 3-6 TON UNITS BRACKET

C08016

Fig. 15 - Gas Line Piping for 3 to 6 Ton Units Only

Other hardware required to complete the installation of

the gas supply line will include a manual shutoff valve, a

sediment trap (drip leg) and a ground-joint union. A

pressure regulator valve may also be required (to convert

gas pressure from pounds to inches of pressure). The

manual shutoff valve must be located within 6-ft (1.83 m)

11

of the unit. The union, located in the final leg entering the

unit, must be located at least 9-in (230 mm) away from

the access panel to permit the panel to be removed for

service. If a regulator valve is installed, it must be located

a minimum of 4-fl (1220 mm) away from the unit's flue

outlet. Some municipal codes require that the manual

shutoff valve be located upstream of the sediment trap.

See Figures 16 and 17 for typical piping arrangements for

gas piping that has been routed through the sidewall of the

curb. See Fig. 18 for typical piping arrangement when

thru-base is used. Ensure that all piping does not block

access to the unit's main control box or limit the required

working space in front of the control box.

_mm) rain

Thru-Curb Adapter Jnion

Shut Off

Valve

\

Unit Base Rail

_/Drip

Leg

Fig. 16 - Gas Piping

C07469

Burner

Access

Panel

Thru-Curb Adapter

min

Union

Unit Bas_e Rail

/

Shut Off

Valve

Fig. 17 - Gas Piping

Drip

Leg

C07470

C08018

Fig. 18 - Gas Piping Thru-Base Connections

When installing the gas supply line, observe local codes

pertaining to gas pipe installations. Refer to the NFPA

54/ANSI Z223.1 NFGC latest edition (in Canada,

CAN/CSA B149.1). In the absence of local building

codes, adhere to the following pertinent

recommendations:

1. Avoid low spots in long runs of pipe. Grade all pipe

1/4-in. in every 15 fl (7 mm in every 5 m) to prevent

traps. Grade all horizontal runs downward to risers.

Use risers to connect to heating section and to meter.

2. Protect all segments of piping system against physical

and thermal damage. Support all piping with appro-

priate straps, hangers, etc. Use a minimum of one

hanger every 6 fl (1.8 m). For pipe sizes larger than

1/2-in., follow recommendations of national codes.

3. Apply joint compound (pipe dope) sparingly and only

to male threads of joint when making pipe connec-

tions. Use only pipe dope that is resistant to action of

liquefied petroleum gases as specified by local and/or

national codes. If using PTFE (Teflon) tape, ensure

the material is Double Density type and is labeled for

use on gas lines. Apply tape per manufacturer's in-

structions.

4. Pressure-test all gas piping in accordance with local

and national plumbing and gas codes before connect-

ing piping to unit.

NOTE: Pressure test the gas supply system after the gas

supply piping is connected to the gas valve. The supply

piping must be disconnected from the gas valve during the

testing of the piping systems when test pressure is in

excess of 0.5 psig (3450 Pa). Pressure test the gas supply

piping system at pressures equal to or less than 0.5 psig

(3450 Pa). The unit heating section must be isolated from

the gas piping system by closing the external main manual

shutoff valve and slightly opening the ground-joint union.

Check for gas leaks at the field-installed and

factory-installed gas lines after all piping connections

have been completed. Use soap-and-water solution (or

method specified by local codes and/or regulations).

12

FIRE OR EXPLOSION HAZARD

Failure to follow this warning could result in personal

injury, death and/or property damage.

• Connect gas pipe to unit using a backup wrench to

avoid damaging gas controls.

• Never purge a gas line into a combustion chamber.

• Never test for gas leaks with an open flame. Use a

commercially available soap solution made

specifically for the detection of leaks to check all

connections.

• Use proper length of pipe to avoid stress on gas

control manifold.

NOTE: If orifice hole appears damaged or it is suspected

to have been redrilled, check orifice hole with a numbered

drill bit of correct size. Never redrill an orifice. A

burr-free and squarely aligned orifice hole is essential for

proper flame characteristics.

Fig. 19 - Orifice Hole

A93059

Step 11 -- Install External Condensate Trap

and Line

The unit has one 3/4-in. condensate drain connection on

the end of the condensate pan and an alternate connection

on the bottom. See Fig. 20. Unit airflow configuration

does not determine which drain connection to use. Either

drain connection can be used with vertical or horizontal

applications.

When using the standard side drain connection, ensure the

red plug in the alternate bottom connection is tight. Do

this before setting the unit in place. The red drain pan can

be tightened with a ]/2-in. square socket drive extension.

To use the alternate bottom drain connection, remove the

red drain plug from the bottom connection (use a ]/2-in.

square socket drive extension) and install it in the side

drain connection.

The piping for the condensate drain and external trap can

be completed after the unit is in place. See Fig. 21.

CONDENSATE PAN (SIDE VIEW)

ALTERNATE

STANDARD DRAIN PLUG

SIDE DRAIN BOTTOM DRAIN

(FACTORY-INSTALLED)

Fig. 20 -Condensate Drain Pan (Side View)

C08021

MINIMUM PITCH

TO ROOF

DRAIN

2" (54) MIN

DRAIN PLUG

SEE NOTE

_'---..ROOF

CURB

NOTE: Trap should be deep enough to offset maximum unit static

difference. A 4" (102) trap is recommended

C08022

Fig. 21 - Condensate Drain Piping Details

All units" must have an external trap for condensate

drainage. Install a trap at least 4-in. (102 mm) deep and

protect against freeze-up. If drain line is installed

downstream from the external trap, pitch the line away

from the unit at i-in. per 10 f! (25 mm in 3 in) of run. Do

not use a pipe size smaller than the unit connection

(-%-in.).

Step 12 -- Make Electrical Connections

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personal

injury or death.

Do not use gas piping as an electrical ground. Unit

cabinet must have an uninterrupted, unbroken

electrical ground to minimize the possibility of

personal injury if an electrical fault should occur. This

ground may consist of electrical wire connected to

unit ground lug in control compartment, or conduit

approved for electrical ground when installed in

accordance with NEC (National Electrical Code);

ANSI/NFPA 70, latest edition (in Canada, Canadian

Electrical Code CSA [Canadian Standards

Association] C22.1), and local electrical codes.

NOTE: Check all factory and field electrical connections

for tightness. Field-supplied wiring shall conform with

the limitations of 63°F (33°C) rise.

13

Field Power Supply --

If equipped with optional Powered Convenience Outlet:

The power source leads to the convenience outlet's

transformer primary are not factory connected. Installer

must connect these leads according to required operation

of the convenience outlet. If an always-energized

convenience outlet operation is desired, connect the

source leads to the line side of the unit-mounted

disconnect. (Check with local codes to ensure this method

is acceptable in your area.) If a de-energize via unit

disconnect switch operation of the convenience outlet is

desired, connect the source leads to the load side of the

unit disconnect. On a unit without a unit-mounted

disconnect, connect the source leads to compressor

contactor C and indoor fan contactor IFC pressure lugs

with unit field power leads.

Refer to Fig. 26 for power transformer connections and

the discussion on connecting the convenience outlet on

page 15.

Field power wires are connected to the unit at line-side

pressure lugs on compressor contactor C and indoor fan

contactor IFC (see wiring diagram label for control box

component arrangement) or at factory-installed option

non-fused disconnect switch. Max wire size is #2 AWG

(copper only). (See Fig. 22.)

Units Without Disconnect Option

C

79

J I

.=L=.L= I

I Disconnect a

aper a

INEC a

_-i--7-a

208/230-1-60

9 C?tFC_ (+)

I I I"--

=J=-L-J=_

I Disconnect I

I per I

I NEC I

-7--T--I--

L1 L2 L3

208/230-3-60

460-3-60

375-3-60

575-3-60

(1-ph

IFM)

Units With Disconnect Option

LI

L2 ....

L3 ....

,q> }

,@ o,°2i!i'o,

ZDisconnect factory test leads; discard.

Fig. 22 -Power Wiring Connections

C07494

NOTE: TEST LEADS - Unit may be equipped with

short leads (pigtails) on the field line connection points on

contactor C or optional disconnect switch. These leads are

for factory run-test purposes only; remove and discard

before connecting field power wires to unit connection

points. Make field power connections directly to line

connection pressure lugs only.

Units with Factory-Installed Disconnect --

The factory-installed option disconnect switch is located

in a weatherproof enclosure located under the main

control box. The manual switch handle is accessible

through an opening in the access panel. Discard the

factory test leads (see Fig. 22).

FIRE HAZARD

Failure to follow this warning could result in

intermittent operation or performance satisfaction.

Do not connect aluminum wire between disconnect

switch and 48TC unit. Use only copper wire.

(See Fig. 23.)

ELECTRIC

DISCONNECT

SWITCH WIRE ONLY

@

Fig. 23 - Disconnect Switch and Unit

A93033

Units Without Factory-Installed Disconnect --

When installing units, provide a disconnect switch per

NEC (National Electrical Code) of adequate size.

Disconnect sizing data is provided on the unit informative

plate. Locate on unit cabinet or within sight of the unit per

national or local codes. Do not cover unit informative

plate if mounting the disconnect on the unit cabinet.

All units --

All field wiring must comply with NEC and all local

codes. Size wire based on MCA (Minimum Circuit Amps)

on the unit informative plate. See Fig. 22 and the unit

label diagram for power wiring connections to the unit

power terminal blocks and equipment ground. Maximum

wire size is #2 ga AWG per pole.

Provide a ground-fault and short-circuit over-current

protection device (fuse or breaker) per NEC Article 440

(or local codes). Refer to unit informative data plate for

MOCP (Maximum Over-current Protection) device size.

All field wiring must comply with the NEC and local

requirements.

All units except 208/230-v units are factory wired for the

voltage shown on the nameplate. If the 208/230-v unit is"

to be connected to a 208-v power suppl); the control

transformer must be rewired by moving the black wire

with the 1/4-in. female spade connector from the 230-v

connection and mowng it to the 200-v 1/4-in. male

terminal on the primary side of the transformen Refer to

unit label diagram for additional information. Field power

wires will be connected line-side pressure lugs on the

power terminal block or at factory-installed option

non-fused disconnect.

NOTE: Check all factory and field electrical connections

for tightness. Field-supplied wiring shall conform with

the limitations of 63°F (33°C) rise.

14

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.

Two types of convenience outlets are offered on 48TC

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. 24.

Pwd-CO

Convenience Transformer

Outlet S

GFCI

Pwd-CO

Fuse

'_ Control Box

Access Panel

C08128

Fig. 24 - 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

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.

DISCONNECT ALL POWER TO UNIT AND

CONVENIENCE OUTLET.

Remove the blank cover plate at the convenience outlet;

discard the blank cover.

Loosen the two screws at the GFCI duplex outlet, until

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

exposed. Press the gasket over the screw heads. Slip the

backing plate over the screw heads at the keyhole slots

and align with the gasket; tighten the two screws until

snug (do not over-tighten).

Mount the weatherproof cover to the backing plate as

shown in Fig. 25. 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.

COVER - WHILE-IN-USE

WEATHERPROOF RECEPTACLE

NOTINCLUDED

BASE PLATE FOR

GFCIRECEPTACLE

C09022

Fig. 25 -Weatherproof Cover Installation

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 l15-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. 24.

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 the unit-mounted non-fused

disconnect or HACR breaker switch; this will provide

service power to the unit when the unit disconnect switch

or HACR switch is open. Other connection methods will

result in the convenience outlet circuit being de-energized

when the unit disconnect or HACR switch is open. See

Fig. 26.

15

S?HE aTIfl ..,_1 E IEi/CE C,'TLET

460,/

i_ D ' U Gi!_

....E".M3

T_N4 ........

SECC, ND;R}

120V

BLL

7GR_ C0N_ECT _>E[_

RE{}¸ LOCAL (109E

_EL

I..... _ _ED'ELBLJ G:¢!_I

_, {}i), 'x£ ,}

o, ;o ;q2#U

6FI CO

,IbG_ 'EL

S_/ITCH FSE LK ,,HT

C08283

UNIT CONNECT PRIMARY TRANSFORMER

VOLTAGE AS CONNECTIONS TERMINALS

208, LI: RED+YEL H1 + H3

240

230 L2: BLU + GRA H2 + H4

L1: RED H1

460 480 Splice BLU + YEL H2 + H3

L2: GRA H4

L1: RED H1

575 600 L2: GRA H2

Fig. 26 - Powered Convenience Outlet Wiring

Fuse on power type: The factory fuse is a Bussman

"Fusetron" T-15, non-renewable screw-in (Edison base)

type plug fuse.

Convenience Outlet Utilization

Maximum Intermittent use : 15 Amps 2 to 3 Hours

Maximum Continuous use : 8 Amps 24/7

I 50HJ542739 13.0

A9225

Fig. 27 -Convenience Outlet Utilization Notice Label

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.

Convenience outlet usage rating:

Continuous usage: 8 amps maximum

Intermittent usage: up to 15 amps maximum for

up to 2 hours maximum

Test the GFCI receptacle by pressing the TEST button on

the face 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.

Factory- Option Thru-Base Connections --

This service connection kit consists of a 1/2-in NPT gas

adapter fitting (brass), a 1/2-in electrical bulkhead

connector and a 3/4-in electrical bulkhead connector, all

factory-installed in the embossed (raised) section of the

unit basepan in the condenser section. The 3/4-in

bulkhead connector enables the low-voltage control wires

to pass through the basepan. The 1/2-in electrical

bulkhead connector allows the high-voltage power wires

to pass through the basepan. See Fig. 21.

Check tightness of connector lock nuts before connecting

electrical conduits.

Field-supplied and field-installed liquid tight conduit

connectors and conduit may be attached to the connectors

on the basepan. Pull correctly rated high voltage and low

voltage through appropriate conduits. Connect the power

conduit to the internal disconnect (if unit is so equipped)

or to the external disconnect (through unit side panel). A

hole must be field cut in the main control box bottom on

the left side so the 24-v control connections can be made.

Connect the control power conduit to the unit control box

at this hole.

Units without Thru-Base Connections --

1. Install power wiring conduit through side panel open-

ings. Install conduit between disconnect and control

box.

2. Install power lines to terminal connections as shown

in Fig. 22.

Voltage to compressor terminals during operation must be

within voltage range indicated on unit nameplate. See

Table 9. On 3-phase units, voltages between phases must

be balanced within 2% and the current within 10%. Use

the formula shown in the legend for Table 9, Note 2 to

determine the percent of voltage imbalance. Operation on

improper line voltage or excessive phase imbalance

constitutes abuse and may cause damage to electrical

components. Such operation would invalidate any

applicable Carrier warranty.

Field Control Wiring --

The 48TC unit requires an external temperature control

device. This device can be a thermostat (field-supplied)

or a PremierLink controller (available as factory-installed

option or as field-installed accessory, for use on a Carrier

Comfort Network or as a stand alone control) or the

RTU-MP Controller for Building Management Systems

using non-CCN protocols (RTU-MP is available as a

factory-installed option only).

Thermostat i

Install a Carrier-approved accessory thermostat according

to installation instructions included with the accessory.

For complete economizer function, select a two-stage

cooling thermostat. Locate the thermostat accessory on a

solid wall in the conditioned space to sense average

temperature in accordance with the thermostat installation

instructions.

16

If the thermostat contains a logic circuit requiring 24-v

power, use a thermostat cable or equivalent single leads of

different colors with minimum of seven leads. If the

thermostat does not require a 24-v source (no "C"

connection required), use a thermostat cable or equivalent

with minimum of six leads. Check the thermostat

installation instructions for additional features which

might require additional conductors in the cable.

Using unit-mounted convenience outlets: Units with

unit-mounded 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.

For wire runs up to 50 ft. (15 m), use no. 18 AWG

(American Wire Gage) insulated wire [35°C (95°F)

minimum]. For 50 to 75 ft. (15 to 23 m), use no. 16 AWG

insulated wire [35°C (95°F) minimum]. For over 75 ft.

(23 m), use no. 14 AWG insulated wire [35°C (95°F)

minimum]. All wire sizes larger than no. 18 AWG cannot

be directly connected to the thermostat and will require a

junction box and splice at the thermostat.

Typical

Thermostat

Connections

©

@

@

G

(Note 1)

©

®

(Note 2)

Central

Terminal

Board

FwSl

%

%

Fq

T

H

E

R

M

O

S

T

A

T

Note 1 :

Note 2:

mmm

Typical multi4unction marking. Follow manufacturer's configuration

instructions to select Y2.

Y2 to Y2 connection required on single-stage cooling units when

integrated economizer function is desired.

Field Wiring

C08069

Fig. 28 - Low-Voltage Connections

Unit without thru-base connection kit --

Pass the thermostat control wires through the hole

provided in the corner post; then feed the wires through

the raceway built into the corner post to the control box.

Pull the wires over to the terminal strip on the upper-left

corner of the Controls Connection Board. See Fig. 29.

NOTE: If thru-the-bottom connections accessory is

used, refer to the accessory installation instructions for

information on routing power and control wiring.

RACEWAY

HOLE IN END PANEL (HIDDEN)

C08027

Fig. 29 - Field Control Wiring Raceway

Heat Anticipator Settings --

Set heat anticipator settings at 0.14 amp for the first stage

and 0.14 amp for second-stage heating, when available.

Smoke Detectors --

Smoke detectors are available as factory-installed options

on 48TC 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.

Units equipped with factory-optional Return Air smoke

detectors require a relocation of the sensor module at unit

installation. See "Completing Installation of Return Air

Smoke Sensor:" on page 19 for details.

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 (see Fig. 30) includes a controller housing,

a printed circuit board, and a clear plastic cover. 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).

17

Duct smoke sensor

controller

Controller housing

and electronics

Conduit couplings J

(supplied by installer)

Fastener J

(2x)

Conduit nuts

_ (supplied by installer)

Conduitsupport plate

;_Terminalblockcover Covergasket

F(ordefing option)

_ Controller cover

Trouble

Fig. 30 - Controller Assembly

C08208

Sensor

The sensor (see Fig. 31) includes a plastic housing, a

printed circuit board, a clear plastic cover, a sampling

tube inlet and an exhaust tube. 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 (for 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.

For installations using two sensors, the duct smoke

detector does not differentiate which sensor signals an

alarm or trouble condition.

/Exhausttube

t

See

Detail A

Intake /

j Exhaustgasket Sensorhousing

F and electronics

\\\\\\\

gasket \\

\ \ \ \ \ Cover gasket

\\ /(ordering option)

\ \\\ \\\\\

// Plug \_\\ \\ ff Sensor cover

Magnetic I_l_ .....

.......JjL ......

rou e ir

T bl D ty

Fig. 31 -Smoke Detector Sensor

C08209

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. 32. 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. 32 - Typical Supply Air Smoke Detector Sensor

Location

18

Return Air without Economizer -- The sampling tube is

located across the return air opening on the unit basepan.

See Fig. 33. 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 "Completing

Installation of Return Air Smoke Sensor:" for details.)

Return Air Detector module

_ (shipping position shown)*

Return Air Detector Sampling Tube

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

C07307

Fig. 33 - 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. 34. 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 the following

installation procedure.)

Completing Installation of Return Air Smoke

Sensor:

1. Unscrew the two screws holding the Return Air

Sensor detector plate. See Fig. 35. 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. 36.

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. 36.

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

sampling tube on the basepan.

Exhaust Tubes

Sample Tube

C08126

Fig. 35 -Return Air Detector Shipping Position

C08127

Fig. 36 -Return Air Sensor Operating Position

Additional Application Data -- Refer to Catalog No.

HKRNKA-1XA for discussions on additional control

features of these smoke detectors including multiple unit

coordination.

_/< Return Air

Sampling Tube

C08129

Fig. 34 - Return Air Sampling Tube Location

19

PremierLink (Factory-Option) --

HVAC SENSOR INPUTS

SPACE TEMP _._

SET POINT ._

SUPPLY AIR TEMP -__

OUTDOOR TEMP _--_

INDOOR AIR QUALITY -_

OUTDOOR AIR QUALITY

DUAL MODE SENSOR!STAT

COMP SAFETY (Y1) 7

FIRE SHUTDOWN (Y2) /_

SUPPLY FAN STATUS (Wl)

NOT USED (W2) _'_

..I

ENTHALPY STATUS (ENTH)

o c

_ 8_mu{Z_°AJ .............................

TSTATC_ ]

8tU s_r Gm ,_ _¢ I

_N Am ! C t& t_m Paff Nt_be_ 330SPREMLK

2;_1oi PremcerL_nk _,.... --

.m__ [

lII=, .....-..............°tt

\ k_Jl,_0'l| 'I 'I &° '1 'i '1

/f/t",..

CCN/LEN NAVIGATOR 4-20MA INDOOR COMPR HEAT EXHAUST

PORT PORT ECONOMIZER FAN MOTOR 1 & 2 LOW/HIGH RVS VALVE

OUTPUTS

Fig. 37 - PremierLink Controller

C08199

The PremierLink controller (see Fig. 37) is compatible

with Carrier Comfort Network ® (CCN) devices. This

control is designed to allow users the access and ability to

change factory-defined settings, thus expanding the

function of the standard unit control board. CCN service

access tools include System Pilot (TM), Touch Pilot (TM)

and Service Tool. (Standard tier display tools Navigator TM

and Scrolling Marquee are not suitable for use with latest

PremierLink controller (Version 2.x).)

The PremierLink control is factory-mounted in the 48TC

unit's main control box to the left of the Central Terminal

Board (CTB). Factory wiring is completed through

harnesses connected to the CTB thermostat. Field

connections are made at a 16-pole terminal block (TB1)

located on the bottom shelf of the unit control box in front

of the PremierLink controller. The factory-installed

PremierLink control includes the supply-air temperature

(SAT) sensor. The outdoor air temperature (OAT) sensor is

included in the FIOP/accessory EconoMi$er TM 2 package.

The PremierLink controller requires the use of a Carrier

electronic thermostat or a CCN connection for time

broadcast to initiate its internal timeclock. This is

necessary for broadcast of time of day functions

(occupied/unoccupied).

NOTE: PremierLink controller is shipped in Sensor

mode. To be used with a thermostat, the PremierLink

controller must be configured to Thermostat mode. Refer

to PremierLink Configuration instructions for Operating

Mode.

Supply Air Temperature (SAT) Sensor -- On

FlOP-equipped 48TC 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.

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. 38.

\

SENSOR _ SUPPLYAIR

m

RETURN AIR

C08200

Fig. 38 - Typical Mounting Location for Supply Air

Temperature (SAT) Sensor on Small Rooftop Units

NOTE: Refer to Form 33CS-58SI for complete

PremierLink configuration, operating sequences and

troubleshooting information. Have a copy of this manual

available at unit start-up.

NOTE: The sensor must be mounted in the discharge

airstream downstream of the cooling coil and any heating

devices. Be sure the probe tip does not come in contact

with any of the unit's heater surfaces.

2O

Fig. 39 - PremierLink Wiring Schematic

21

C09300

Outdoor Air Temperature (OAT) Sensor I The OAT is

factory-mounted in the EconoMi$er2 (FIOP or

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

an eyelet mounting ring.

EconoMi$er2 I The PremierLink control is used with

EconoMiSer2 (option or accessory) for outdoor air

management. The damper position is controlled directly

by the PremierLink control; EconoMi$er2 has no internal

logic device.

Outdoor air management functions can be enhanced with

field-installation of these accessory control devices:

Enthalpy control (outdoor air or differential sensors)

Space CO: sensor

Outdoor air CO: sensor

Refer to Table 2 for accessory part numbers.

Field connections I Field connections for accessory

sensor and input devices are made at the 16-pole terminal

block (TB1) located on the control box bottom shelf in

front of the PremierLink control (See Fig. 39). Some input

devices also require a 24-vac signal source; connect at

CTB terminal R at "THERMOSTAT" connection strip for

this signal source. See connections figures on following

pages for field connection locations (and for continued

connections at the PremierLink board inputs).

Table 3 provides a summary of field connections for units

equipped with Space Sensor. Table 4 provides a summary

of field connections for units equipped with Space

Thermostat.

Space Sensors -The PremierLink controller is

factory-shipped configured for Space Sensor Mode. A

Carrier T-55 or T-56 space sensor must be used. T-55

space temperature sensor provides a signal of space

temperature to the PremierLink control. T-56 provides

same space temperature signal plus it allows for

adjustment of space temperature setpoints from the face of

the sensor by the occupants.

s_

©

_ .\ 5,,_ 0Ep(+)j.

_, _ _W_HL(Q_N_)L',

\ BL@)t]

Wl

\ / BRN (GND& [ ',

@

4:b,

©

CCN COM

SENSOR WIRING

C08201

Fig. 40 -T-55 Space Temperature Sensor Wiring

Connect T-55 -See Fig. 40 for typical T-55 internal

connections. Connect the T-55 SEN terminals to TB1

terminals 1 and 3 (see Fig. 41).

TB1 PL

C08212

Fig. 41 - PremierLink T-55 Sensor

Connect T-56 -See Fig. 42 for T-56 internal

connections. Install a jumper between SEN and SET

terminals as illustrated. Connect T-56 terminals to TB1

terminals 1, 3 and 5 (see Fig. 43).

©

©

CCN COM

SENSOR WIRING

JUMPER

TERM INALS

AS SHOWN

Fig. 42 -T-56 Internal Connections

C08202

<NA>

!_l'---Jumper

TB1

D

TB1

%

PL

PL

D

C08213

Fig. 43 -PremierLink T-56 Sensor

Connect Thermostat I A 7-wire thermostat connection

requires a 24-v power source and a common connection.

Use the R and C terminals on the CTB's THERMOSTAT

connection strip for these. Connect the thermostat's Y1,

Y2, W1, W2 and Gterminals to PremierLink TB1 as

shown in Fig. 44.

If the 48TC unit is equipped with factory-installed smoke

detector(s), disconnect the factory BLU lead at TB1-6

(Y2) before connecting the thermostat. Identify the BLU

lead originating at CTB-DDC-1; disconnect at TB1-6

and tape off. Confirm that the second BLU lead at TB1-6

remains connected to PremierLink J4-8.

22

SPACE CTB

THERMOSTAT THERMOSTAT

D

TB1 PL

42D E]

(Z) %

CTB

THERMOSTAT

Fig. 44 - Space Thermostat Connections

C08119

Table 2-PremierLink Sensor Usage

OUTDOOR AIR RETURN AIR OUTDOOR AIR RETURN AIR

APPLICATION TEMPERATURE TEMPERATURE ENTHALPY SENSOR ENTHALPY SENSOR

SENSOR SENSOR

Differential Dry Bulb

Temperature with

PremierLink

(PremierLink requires

4- 20 mA Actuator)

Single Enthalpy with

PremierLink

(PremierLink requires

4- 20mA Actuator)

Differential Enthalpy

with PremierLink

(PremierLink requires

4- 20mA Actuator)

Included -

CRTEMPSNOO1AO0

Included -

Not Used

Included -

Not Used

Required -

33ZCT55SPT

or equivalent

Requires -

33CSENTHSW

Requires -

33CSENTHSW

or equivalent

NOTES:

CO 2 Sensors (Optional):

33ZCSENC02 - Room sensor (adjustable). Aspirator box is required for duct mounting of the sensor.

33ZCASPC02 - Aspirator box used for duct-mounted CO 2 room sensor.

33ZCT55C02 - Space temperature and CO2 room sensor with override.

33ZCT56C02 - Space temperature and CO2 room sensor with override and setpoint.

Requires -

33CSENTSEN

or equivalent

23

Table 3 - Space Sensor Mode

TB1 TERMINAL

1

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

LEGEND:

T55

T56

CCN

CMPSAFE -

FILTER

FIELD CONNECTION INPUT SIGNAL

T55- SEN/T56- SEN Analog (1Okthermistor)

RMTOCC Discrete, 24VAC

T55- SEN/T56- SEN Analog (1Okthermistor)

CMPSAFE Discrete, 24VAC

T56- SET Analog (1Okthermistor)

FSD Discrete, 24VAC

LOOP- PWR Analog, 24VDC

SPS Discrete, 24VAC

IAQ-SEN Analog, 4-20mA

FILTER Discrete, 24VAC

IAQ- COM/OAQ- COM/RH- COM Analog, 4-20mA

CCN + (RED) Digital,, 5VDC

OAQ-SEN/RH-SEN Analog, 4-20mA

CCN Gnd (WriT) Digital, 5VDC

AUX OUT(Power Exhaust) (Output)Discrete 24VAC

CCN - (BLK) Digital, 5VDC

Space Temperature Sensor

Space Temperature Sensor

Carrier Comfort Network (communication bus)

Compressor Safety

Dirty Filter Switch

FSD - Fire Shutdown

IAQ - Indoor Air Quality (C02)

OAQ- Outdoor Air Quality (C02)

RH - Relative Humidity

SFS - Supply Fan Status

Table 4 - Thermostat Mode

TB1 TERMINAL FIELD CONNECTION INPUT SIGNAL

1 RAT SEN Analog (10k thermistor)

2 G Discrete, 24VAC

3 RAT SEN Analog (1Ok thermistor)

4 Y1 Discrete, 24VAC

5

6 Y2 Discrete, 24VAC

7 LOOP- PWR Analog, 24VDC

8 Wl Discrete, 24VAC

9 IAQ-SEN Analog, 4-20mA

10 W2 Discrete, 24VAC

11 IAQ- COM/OAQ- COM/RH-COM Analog, 4- 20mA

12 CCN + (RED) Digital, 5VDC

13 OAQ - SEN/RH - SEN Analog, 4- 20mA

14 CCN Gnd (WriT) Digital, 5VDC

15 AUX OUT (Power Exhaust) (Output) Discrete 24VAC

16 CCN - (BLK) Digital, 5VDC

LEGEND:

CCN -

G

IAQ -

OAQ -

RAT -

Carrier Comfort Network (communication bus)

Thermostat Fan

Indoor Air Quality (C02)

Outdoor Air Quality (C02)

Return Air Temperature

RH - Relative Humidity

Wl - Thermostat Heat Stage 1

W2 - Thermostat Heat Stage 2

Y1 - Thermostat Cool Stage 1

Y2 - Thermostat Cool Stage 2

24

If the 48TC unit has an economizer system and

free-cooling operation is required, a sensor representing

Return Air Temperature must also be connected

(field-supplied and installed). This sensor may be a T-55

Space Sensor (see Fig. 40) installed in the space or in the

return duct, or it may be sensor PNO 33ZCSENSAT,

installed in the return duct. Connect this sensor to TBI-1

and TB1-3 per Fig. 41.

Configure the unit for Thermostat Mode I Connect to the

CCN bus using a CCN service tool and navigate to

PremierLink Configuration screen for Operating Mode.

Default setting is Sensor Mode (value 1). Change the

value to 0 to reconfigure the controller for Thermostat

Mode.

When the PremierLink is configured for Thermostat

Mode, these functions are not available: Fire Shutdown

(FSD), Remote Occupied (RMTOCC), Compressor Safety

(CMPSAFE), Supply Fan Status (SFS), and Filter Pressure

Switch (FILTER).

Economizer controls i

Return Air Enthalpy Sensor I Mount the return-air

enthalpy sensor (33CSENTSEN) in the return-air section

of the economizer. The return air sensor is wired to the

enthalpy controller (33CSENTHSW). See Fig. 46.

-4-20

Main

+ VDC

Out

+ 24-36

VDC In

-4-20 Main

Out

|

24V ? RED --'_ECONO

GND T| BLK .JMOTOR

LOW 1- GRA _

C09027

Fig. 46 - Outside and Return Air Enthalpy Sensor

Wiring

Outdoor Air Enthalpy Control (PNO 33CSENTHSW) -

The enthalpy control (33CSENTHSW) 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 (33CSENTSEN) is

required for differential enthalpy control. See Fig. 45.)

Enthalpy

Switch

=RED '_ECONO

BLK ,JMOTOR

GRA_ E__ CTB

ECON

m Factory Wiring Harness

C09026

Fig. 45 -Enthalpy Switch (33CSENTHSW) Connections

Locate the enthalpy control in the economizer next to the

Actuator Motor. Locate two GRA leads in the factory

harness and connect the gray lead labeled "ESL" to the

terminal labeled "LOW". See Fig. 45. Connect the

enthalpy control power input terminals to economizer

actuator power leads RED (connect to 24V) and BLK

(connect to GND).

The outdoor enthalpy changeover setpoint is set at the

enthalpy controller.

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 enthal-

py controller.

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

connector on the return air enthalpy sensor and the

(+) terminal on the enthalpy controller. Connect the

BLK wire to (-) spade connector on the return air en-

thalpy sensor and the (-) terminal on the enthalpy

controller.

Indoor Air Quality (CO2 sensor) I 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 CO2 present in the space air.

The CO2 sensors 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 CO2 sensor for electrical

requirements and terminal locations. See Fig. 47 for

typical CO2 sensor wiring schematic.

Differential Enthalpy Control I 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.

25

0

H

2 1 O 87654321

J3 J4

Q0q0VDC

® SIG COM

® 4-20mA

NC '} ALARM

COM_, RELAY

NO J CONTACTS

O

C08635

Fig. 47 - 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 Gage) 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.

To connect the sensor to the control, identify the positive

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

sensor. See Fig. 47. Connect the 4-20 mA terminal to

terminal TB1-9 and connect the SIG COM terminal to

terminal TBI-ll. See Fig. 48.

IAQ Sensor

TB1 PL

TB1

<gg> []

24 VAC

C08636

Fig. 48 - Indoor CO2 Sensor (33ZCSENCO2)

Connections

Refer to Form 33CS-58SI, PremierLink Installation,

Start-up, and Configuration Instructions, for detailed

configuration information

Outdoor Air Quality Sensor (PNO 33ZCSENCO2 plus

weatherproof enclosure) -- The outdoor air CO2 sensor 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. 49. The outdoor air CO2

sensor must be located in the economizer outside air hood.

61t2"

_1-- 41/4" ......................t_

_4_---- 33/4" --_b,,]

© @

@

@

@

COVER REMOVED

--,--

7u

...... 3.5" ........

OC

O

OO

SIDE VIEW

C07135

Fig. 49 - Outdoor Air Quality Sensor Cover

Wiring the Outdoor Air CO2 Sensor -- 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. 47. Connect the 4 to 20 mA

terminal to the TB1-13 terminal of the 48TC. Connect the

SIG COM terminal to the TBI-ll terminal of the 48TC.

See Fig. 50.

OAQ Sensor/RH Sensor TB1 PL

TB1

@ Fq

24 VAC

C08275

Fig. 50 - Outdoor CO 2 Sensor Connections

Smoke Detector/Fire Shutdown (FSD) -- This function is

available only when PremierLink is configured for

(Space) Sensor Mode. The unit is factory-wired for

PremierLink FSD operation when PremierLink is

factory-installed.

26

On 48TC 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 CTB input. The FSD function is initiated via the

smoke detector's Alarm NO contact set. The PremierLink

communicates the smoke detector's tripped status to the

CCN building control. See Fig. 39, the PremierLink

wiring schematic.

Filter Status Switch I This function is available only

when PremierLink is configured for (Space) Sensor Mode.

PremierLink control can monitor return filter status in two

ways: By monitoring a field-supplied/installed filter

pressure switch or via supply fan runtime hours.

Using switch input: Install the dirty filter pressure switch

according to switch manufacturer's instructions, to

measure pressure drop across the unit's return filters.

Connect one side of the switch's NO contact set to CTB's

THERMOSTAT-R terminal. Connect the other side of the

NO contact set to TBI-10. Setpoint for Dirty Filter is set

at the switch. See Fig. 51.

Filter Switch (NO, close on rising pressure (high drop))

CTB

Thermostat

TB1 PL

--o D 427

C08216

Fig. 51 - PremierLink Filter Switch Connection

When the filter switch's NO contact set closes as filter

pressure drop increases (indicating dirt-laden filters), the

input signal to PremierLink causes the filter status point to

read "DIRTY".

Using Filter Timer Hours: Refer to Form 33CS-58SI for

instructions on using the PremierLink Configuration

screens and on unit alarm sequence.

Supply Fan Status Switch I The PremierLink control can

monitor supply fan operation through a

field-supplied/installed differential pressure switch. This

sequence will prevent (or interrupt) operation of unit

cooling, heating and economizer functions until the

pressure switch contacts are closed indicating proper

supply fan operation.

Install the differential pressure switch in the supply fan

section according to switch manufacturer's instructions.

Arrange the switch contact to be open on no flow and to

close as pressure rises indicating fan operation.

Connect one side of the switch's NO contact set to CTB's

THERMOSTAT-R terminal. Connect the other side of the

NO contact set to TB1-8. Setpoint for Supply Fan Status

is set at the switch. See Fig. 52.

Fan (Pressure) Switch (NO, close on rise in pressure)

CTB

Thermostat

o[]

L@o- TB1

--0 []

C08118

Fig. 52 -PremierLink Wiring Fan Pressure Switch

Connection

Remote Occupied Switch I The PremierLink control

permits a remote timeclock to override the control's

on-board occupancy schedule and place the unit into

Occupied mode. This function may also provide a "Door

Switch" time delay function that will terminate cooling

and heating functions after a 2-20 minute delay.

Connect one side of the NO contact set on the timeclock

to CTB's THERMOSTAT-R terminal. Connect the other

side of the timeclock contact to the unit's TB1-2 terminal.

Remote Occupied CTB

Thermostat

c----o []

I

TB1 PL

Time Clock T 0 _ @

C08214

Fig. 53 - PremierLink Wiring Remote Occupied

Refer to Form 33CS-58SI for additional information on

configuring the PremierLink control for Door Switch

timer function.

Power Exhaust (output) - Connect the accessory Power

Exhaust contactor coils(s) per Fig. 54.

Power Exhaust TB1

_TAN D

OTB

THERMOSTAT

L GRA D

PL

C08120

Fig. 54 -PremierLink Power Exhaust Output

Connection

CCN Communication Bus I The PremierLink controller

connects to the bus in a daisy chain arrangement.

Negative pins on each component must be connected to

respective negative pins, and likewise, positive pins on

each component must be connected to respective positive

pins. The controller signal pins must be wired to the signal

ground pins. Wiring connections for CCN must be made

at the 3-pin plug.

27

At any baud (9600, 19200, 38400 baud), the number of

controllers is limited to 239 devices maximum. Bus length

may not exceed 4000 It, with no more than 60 total

devices on any 1000-ft section. Optically isolated RS-485

repeaters are required every 1000 ft.

NOTE: Carrier device default is 9600 band.

COMMUNICATION BUS WIRE SPECIFICATIONS --

The CCN Communication Bus wiring is field-supplied

and field-installed. It consists of shielded 3-conductor

cable with drain (ground) wire. The cable selected must

be identical to the CCN Communication Bus wire used for

the entire network.

See Table 5 for recommended cable.

Table 5-Recommended Cables

MANUFACTURER CABLE PART NO.

Alpha 2413 or 5463

American A22503

Belden 8772

Columbia 02525

NOTE: Conductors and drain wire must be at least 20

AWG, stranded, and tinned copper. Individual conductors

must be insulated with PVC, PVC/nylon, vinyl, Teflon, or

polyethylene. An aluminum/polyester 100% foil shield

and an outer jacket of PVC, PVC/nylon, chrome vinyl, or

Teflon with a minimum operating temperature range of

-20°C to 60°C is required. Do not run communication

wire in the same conduit as or next to any AC voltage

wiring.

The communication bus shields must be tied together at

each system element. If the communication bus is entirely

within one building, the resulting continuous shield must

be connected to ground at only one single point. If the

communication bus cable exits from one building and

enters another building, the shields must be connected to

the grounds at a lightning suppressor in each building (one

point only).

Connecting CCN bus:

NOTE: When connecting the communication bus cable,

a color code system for the entire network is

recommended to simplify installation and checkout. See

Table 6 for the recommended color code.

Table 6-Color Code Recommendations

CCN BUS WIRE CCN PLUG PIN

SIGNAL TYPE COLOR NUMBER

+ Red 1

Ground White 2

- Black 3

Connect the CCN (+) lead (typically RED) to the unit's

TBI-12 terminal. Connect the CCN (ground) lead

(typically WHT) to the unit's TBI-14 terminal. Connect

the CCN (-) lead (typically BLK) to the unit's TBI-16

terminal. See Fig. 55.

CCN Bus

TB1 PL

+ (RED) "D

TB1

GND (WHT) '[l"_m

TB1

C08276

Fig. 55 -PremierLink CCN Bus Connections

28

RTU-MP control system --

The RTU-MP controller, see Fig. 56, 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. The available

network systems are BACnet MP/TR 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.

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

unit's main control box, to the left of the CTB. See

Fig. 57. Factory wiring is completed through harnesses

connected to the CTB. 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$er2 package.

Refer to Table 7, RTU-MP Controller Inputs and Outputs

for locations of all connections to the RTU-MP board.

J4 J1 J2 >

o

Board Power "-

(AO-I)

0-10VDC

J3

Iv =

B B

or_ =

J5

DO_ (H)

(Humidistat)

--_J DO-7 (Spare)

DO=8 (PE)

Power Exhaust)

Jll

J14

Protocol Selector *Remove Input j0 (T-55 Accy) BACnet

both for 0-SV InpuL11 (T_ Accy) or Net

Comm

Fig. 56 -RTU-MP Multi-Protocol Control Board

C0712g

RTU-MP

FIOP

DDC

]+

+

TERMINAL BOARD

I . + UNIT 0_L¥

+

I_c_ss_S-_:

Fig. 57 -48TC Control Box Component Locations

C09299

29

illl iii

Fig. 58 - RTU-MP System Control Wiring Diagram

3O

C09301

Table 7-RTU-MP Controller Inputs and Outputs

POINT NAME BACnet OBJECT TYPE OF I/O CONNECTION PIN

NAME NUMBERS

INPUTS

Space Temperature Sensor sptsens AI (10K Thermistor) J20-1,2

Supply Air Temperature sat AI (10K Thermistor) J2-1,2

Local Outside Air Temperature Sensor oatsens AI (10K Thermistor) J2-3, 4

Space Temperature Offset Pot sptopot AI (lOOK Potentiometer) J20-3

Indoor Air Quality iaq AI (4-20 ma) J4-2, 3

Outdoor Air Quality oaq AI (4-20 ma) J4-5, 6

Safety Chain Feedback safety DI (24 VAC) J1-9

Compressor Safety compstat DI (24 VAC) J1-2

Fire Shutdown firedown DI (24 VAC) J1 - 10

Enthatpy Switch enthatpy DI (24 VAC) J2-6, 7

Humidistat Input Status humstat DI (24 VAC) J5-7, 8

CONFIGURABLE INPUTS*

Space Relative Humidity sprh AI (4-20 ma) J4-2,3 or J4-5,6

Outside Air Relative Humidity oarh AI (4-20 ma)

Supply Fan Status fanstat DI (24 VAC)

Filter Status filtstat DI (24 VAC) J5-1,2 or J5-3,4 or

J5 5,6 or J5-7,8

Remote Occupancy Input remocc DI (24 VAC)

OUTPUTS

econocmd 4-20ma J2-5

sf DO Relay (24VAC, 1A) J1-4

comp_l DO Relay (24VAC, 1A) J1-8

comp_2 DO Relay (24VAC, 1A) J1-7

heat_l DO Relay (24VAC, 1A) J1-6

heat_2 DO Relay (24VAC, 1A) J1-5

aux_2 DO Relay (24VAC, 1A) J11-3

humizer DO Relay (24VAC, 1A) J11-7, 8

Economizer Commanded Position

Supply Fan Relay State

Compressor 1 Relay State

Compressor 2 Relay State

Heat Stage 1 Relay State

Heat Stage 2 Relay State

Power Exhaust Relay State

Dehumidification Relay State

LEGEND

AI - Analog Input

AO - Analog Output

DI - Discrete Input

DO - Discrete Output

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

Parallel pins J5-1 = J2-6, J5-3 = J1-10, J5-5 = J1-2 are used for field-installation.

The RTU-MP controller requires the use of a Carrier

space sensor. A standard thermostat cannot be used with

the RTU-MP system.

Supply Air Temperature (SAT) Sensor - On

FIOP-equipped 48TC 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.

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. 38.

Outdoor Air Temperature (OAT) Sensor - The OAT is

factory-mounted in the EconoMi$er2 (FIOP or

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

an eyelet mounting ring.

EconoMi$er2 The RTU-MP control is used with

EconoMiSer2 (option or accessory) for outdoor air

management. The damper position is controlled directly

by the RTU-MP control; EconoMi$er2 has no internal

logic device.

Outdoor air management functions can be enhanced with

field-installation of these accessory control devices:

Enthalpy control (outdoor air or differential sensors)

Space CO2 sensor

Outdoor air CO2 sensor

Field Connections Field connections for accessory

sensors and input devices are made the RTU-MR at plugs

J1, J2, J4, J5, Jll 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. 29.

31

8The 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-MR

Connect to the wires to the removable Phoenix connectors

and then reconnect the connectors to the board.

Space Temperature (SPT) Sensors

A field-supplied Carrier space temperature sensor is

required with the RTU-MP to monitor space temperature.

There are 3 sensors available for this application:

• 33ZCT55SPT, space temperature sensor with override

button

• 33ZCT56SPT, space temperature sensor with override

button and setpoint adjustment

• 33ZCT59SPT, 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. 40 for typical T-55 internal

connections. Connect the T-55 SEN terminals to

RTU-MP J20-1 and J20-2. See Fig. 59.

C08460

Fig. 59 -RTU-MP T-55 Sensor Connections

Connect T-56 See Fig. 42 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. 60.

"i,_---Jumper

C08461

Fig. 60 - 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. 61

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.

BRN (COM)

BLK (STO)

I

I BLU (SPT)

I I

I I

I I

OR SET SEN

iooo

OPB COM- PWR+

ooo

/I I

........... J I

i 24 VAC

I

SENSOR

WIRING

POWER

WIRING

NOTE: Must use a separate isolated transformer.

C07132

Fig. 61 - Space Temperature Sensor Typical Wiring

(33ZCT59SPT)

Economizer controls --

Outdoor Air Enthalpy Control (PNO 33CSENTHSW) -

The enthalpy control (33CSENTHSW) 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 (33CSENTSEN) is

required for differential enthalpy control. See Fig. 45.)

Locate the enthalpy control in the economizer next to the

Actuator Motor. Locate two GRA leads in the factory

harness and connect the gray lead labeled "ESL" to the

terminal labeled "LOW". See Fig. 45. Connect the

enthalpy control power input terminals to economizer

actuator power leads RED (connect to 24V) and BLK

(connect to GND).

The outdoor enthalpy changeover setpoint is set at the

enthalpy controller.

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 (33CSENTSEN) in the return-air section

of the economizer. The return air sensor is wired to the

enthalpy controller (33CSENTHSW). See Fig. 46.

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 enthal-

py controller.

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

connector on the return air enthalpy sensor and the

32

(+) terminal on the enthalpy controller. Connect the

BLK wire to (-) spade connector on the return air en-

thalpy sensor and the (-) terminal on the enthalpy

controller.

Indoor Air Quality (CO 2 sensor) -- 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 CO2 present in the space air.

The CO2 sensors 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 CO2 sensor for electrical

requirements and terminal locations. See Fig. 47 for

typical CO2 sensor wiring schematic.

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 Gage) 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.

To connect the sensor to the control, identify the positive

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

sensor. See Fig. 47. Connect the 4-20 mA terminal to

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

RTU-MP J4-3. See Fig. 62.

IAQ Sensor

24 VAC

C08462

Fig. 62 - RTU-MP /Indoor CO 2 Sensor

(33ZCSENCO2) Connections

Outdoor Air Quality Sensor (PNO 33ZCSENCO2 plus

weatherproof enclosure) -- The outdoor air CO2 sensor 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. 49. The outdoor air CO2

sensor must be located in the economizer outside air hood.

Wiring the Outdoor Air CO2 Sensor -- 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. 47. Connect the 4 to 20 mA

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

terminal to RTU-MP J4-6.

OAQ Sensor/Fill Sensor

24 VAC

C08463

Fig. 63 - RTU-MP /Outdoor CO 2 Sensor

(33ZCSENCO2) Connections

On 48TC 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 CTB 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. 58, the

RTU-MP System Control wiring schematic.

The Fire Shutdown Switch configuration,

MENU _Config-_Inputs-+input 5, identifies the

normally open status of this input when there is no fire

alarm.

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--_onfig-_Inputs-,qnput 3, 5, 8, or 9

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. 56 and Fig. 58 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-_onfig-_Inputs-+input 3, 5, 8, or 9 to 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. 56 and Fig. 58 for wire terminations at J5.

33

Remote Occupancy Communication Wiring - Protocols

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-Hnputs--,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. 56 and Table 7 for wire

terminations at J5.

Power Exhaust (output)

Connect the accessory Power Exhaust contactor coil(s) per

Fig. 64.

Power Exhaust

TAN

CTB

THERMOSTAT

GRA

C08464

Fig. 64 -RTU-MP Power Exhaust Connections

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 (SWl and SW2) are used to set the

board's network address. See Fig. 65 for the switch setting

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

through plug J19.

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

switch settings.

Refer to the RTU-MP 3rd Part)' Integration Guide for

more detailed information on protocols, 3rd party wiring,

and networking.

SW3 Protocol Selection

PROTOCOL DS8 DS7 DS6 DS5 DS4 DS3 DS2 DS1

BACnet MS/'FP Unused OFF OFF OFF ON OFF Select Baud Select Baud

(Master)

Modbus Unused OFF OFF ON ON OFF Select Baud Select Baud

(Slave)

N2 Unused OFF OFF OFF ON ON OFF OFF

(Slave)

LonWorks Unused ON ON OFF ON OFF OFF OFF

NOT E: C_a_ _(

DS = Dip Switch O_t_ S_ _ NSTP 3&4_

BAOnet MS/TP SW6 example shown j J [ i

Baud Rate Selections

BAUD RATE DS2 DS1

9600 OFF OFF

19,200 ON OFF

38,400 OFF ON

76,800 ON ON

Fig. 65 - RTU-MP SW3 Dip Switch Settings

C07166

34

Local Access

BACview 6 Handheld

The BACview 6 is 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. 66. This is

an accessory interface that does not come with the MP

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

BACview 6 to the RTU-MP's J12 local access port. There

are 2password protected levels in the display (User and

Admin). The user password is defaulted 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

idle. See Form 48-50H-T-2T, Appendix A for navigation

and screen content.

Virtual BACview

Virtual BACview is a freeware computer program that

functions as the BACview 6 Handheld. 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.

Port

P1

J12

PI

Protocol Selector

RTU-MP

Cable P5 P5

BACview sLoca| Access CaNe

Fig. 66 -BACview 6 Handheld Connections

C07170

35

Table 8-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,

2 flashes per second alternating with Run LED Five minute auto-restart delay after system error

3 flashes, Control module has just been formatted

2 flashes per second then off

4 flashes, Two or more devices on this network have the

2 flashes per second then pause same ARC156 network address

Exec halted after frequent system errors or

2 flashes per second On 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 Ten second recovery period after brownout

Run LED

14 flashes per second, Brownout

14 flashes per second alternating with Run LED

On On

Failure. Try the following solutions:

• Turn the RTU-MP off, then on.

• Format the RTU- MR

• Download memory to the RTU-MR

• Replace the RTU- MR

NOTE: Refer to Form 48-50H-T-2T for complete

configuration of RTU-ME 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.

36

Step 13 -- Humidi-MiZer TM -

Space RH Controller --

The Humidi-MiZer dehumidification system requires a

field-supplied and -installed space relative humidity

control device. This device may be aseparate humidistat

control (contact closes on rise in space RH above control

setpoint) or a combination thermostat-humidistat control

device such as Carrier's EDGE (n_Pro Thermidistat with

isolated contact set for dehumidification control. The

humidistat is normally used in applications where a

temperature control is already provided (units with

PermierLink TM control).

To connect the Carrier humidistat (HL38MG029):

1. Route the humidistat 2-conductor cable (field-sup-

plied) through the hole provided in the unit corner

post.

2. Feed wires through the raceway build into the corner

post (see Fig. 29) to the 24-v barrier located on the

left side of the control box. The raceway provides the

UL-required clearance between high-voltage and

low-voltage wiring.

3. Use wire nuts to connect humidistat cable to two

PINK leads in the low-voltage wiring as shown in

Fig. 69.

To connect the Thermidistat device (33CS2PPRH-01):

1. Route the Thermidistat multi-conductor thermostat

cable (field-supplied) through the hole provided in

the unit corner post.

2. Feed wires through the raceway build into the corner

post (see Fig. 29) to the 24-v barrier located on the

left side of the control box. The raceway provides the

UL-required clearance between high-voltage and

low-voltage wiring.

3. The Thermidistat has dry contacts at terminals DI

and D2 for dehumidification operation (see Fig. 70).

The dry contacts must be wired between CTB

terminal R and the PINK lead to the LTLO switch

with field-supplied wire nuts. Refer to the installation

instructions included with the Carrier Edge

Thermidistat device (Form 33CS-65SI or latest) for

more information.

4O

_o E-31-

L:IT

LL

C09295

Fig. 67 - Accessory Field-Installed Humidistat

IC

actualtemp

59

outside temp

P _mU I

Fig. 68 -EDGE Pro Thermidistat

C09296

37

r,_m

CONTROL i

WIRING

r

_ __ ,_HT

P,4K

YEL

_LU

WH

_H

A

%

}

%

(}

:i.... I

FC (PH OL}

CLOlTERMBB

Fig. 69 -Typical Humidi-MiZer Adaptive Dehumidification System Humidistat Wiring

C09297

EDGE Pro THERMIDISTAT

Rc ....

Rh Q

Wl ....

G ....

Y2 .........

C ....

O/W2/B ....

Y1 ....

OAT Q

RRS Q

SRTN @

HUM @

D1 ....

D2

V+

Vg

I

l q

I

I I

l H 1

I I

I I

_ l l ll 1

I I

-- i-

___4__

I

I

Unit CTB

THERMOSTAT

Q X*

i...... _ C

I

I

]-- l Q G

I

l I ---- W2

I

Wl

I

I

I_ Y2

_1

Y1

-- R

HumidilMiZer TM FlOP

I............................ 7

'

..... PNI_ I l _ THERMOSTAT i

q i LTLO i

-i- -PNK -- -- <_1/'o _ REHEAT I

'_ CONTROL

I...................... u__J

*Connection not required.

Fig. 70 -Typical Rooftop Unit with Humidi-MiZer Adaptive Dehumidification System

with EDGE Pro Thermidistat Device

C09298

38

---- NOM. IFM FANMOTOR

V-Ph-Hz TYPE FLA

Table 9 -Unit Wire/MOCP Sizing Data

NO C.O. or UNPWRD C.O.

COMBUSTION POWER NORE. w/RE, (pwrdfr/unit)

DISC. SIZE

EXHAUST

FLA

1.9

1.9

1.0

1.9

1.9

1.9

1.0

1.9

MCA

27.6

27.6

19.9

19.9

20.2

10.4

10.4

10.9

7.5

7.5

7.6

34.1

34.1

24.0

24.0

24.6

10.9

10.9

11.4

7.5

7.5

7.6

DISC. SIZE

MOCP FLA LRA

40.0 27 97

40.0 27 97

30.0 20 91

30.0 20 91

30.0 20 109

15.0 10 47

15.0 10 47

15.0 11 56

15.0 8 45

15.0 8 45

15.0 8 51

50.0 33 135

50.0 33 135

30.0 24 101

30.0 24 101

30.0 24 119

15.0 11 50

15.0 11 50

15.0 11 59

15.0 8 45

15.0 8 45

15.0 8 51

MCA

29.5

29.5

21.8

21.8

22.1

11.4

11.4

11.9

9.4

9.4

9.5

36.0

36.0

25.9

25.9

26.2

11.9

11.9

12.4

9.4

9.4

9.5

MOCP

45.0

45.0

30.0

30.0

30.0

15.0

15.0

15.0

15.0

15.0

15.0

50.0

50.0

30.0

30.0

30.0

15.0

15.0

15.0

15.0

15.0

15.0

STD

208/260-1 - 60 0.48

MED

STD

208/260- 3- 60 MED 0.48

o HIGH

-k

O STD

460-6-60 MED 0.25

HIGH

STD

575-6-60 MED 0.24

HIGH

STD

208/260-1 - 60 0.48

MED

STD

208/260- 3- 60 MED 0.48

It)

o HIGH

-k

O STD

460-6-60 MED 0.25

HIGH

STD

575-6-60 MED 0.24

HIGH

FLA LRA

29 99

29 99

22 96

22 96

22 111

11 48

11 48

12 57

10 47

10 47

10 53

35 137

35 137

26 103

26 103

26 121

12 51

12 51

12 60

10 47

10 47

10 53

1Fuse or breaker

LEGEND:

CO -Convenient outlet v Q US

DISC - Disconnect

FLA -Full load amps

IFM - Indoor fan motor

LRA - Locked rotor amps

MCA - Minimum circuit amps

MOCP - Maximum over current protection

PE - Power exhaust

UNPWR 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 de-

termine the percentage of voltage imbalance.

max voltage deviation from average voltage

% Voltage imbalance = 1O0 x average voltage

Example: Supply voltage is 260-3-60

AB = 224 v

BC = 231 v

AC = 226 v

(224 + 231 + 226)

Average Voltage = 3

681

=3

= 227

Determine maximum deviation from average voltage.

(AB) 227 - 224 = 3 v

(BC) 261 - 227 = 4 v

(AC) 227- 226 = 1 v

Maximum deviation is 4 v.

Determine percent of voltage imbalance.

4

% Voltage imbalance = 100 x 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.

39

(D

?

-k

O

NOM. IFM FAN MOTOR

V-Ph-Hz TYPE FLA

Table 9 -- Unit Wire/MOCP Sizing Data (cont)

NO C.O. or UNPWRD C.O.

COMBUSTION POWER NORE. w/RE, (pwrdfr/unit)

DISC. SIZE

EXHAUST

FLA

1.9

1.9

1.0

1.9

1.9

1.0

1.9

MCA

69.6

41.7

26.4

26.7

29.0

12.8

13.6

14.1

10.0

10.9

10.9

30.9

33.2

33.2

15.8

16.6

17.6

12.1

12.9

12.9

DISC. SIZE

MOCP FLA LRA

60.0 68 152

60.0 40 177

40.0 26 128

40.0 26 146

40.0 29 172

20.0 12 61

20.0 16 70

20.0 14 86

15.0 10 47

15.0 11 64

15.0 11 64

45.0 30 159

50.0 33 185

50.0 33 185

25.0 15 80

25.0 16 96

25.0 17 102

15.0 12 64

20.0 16 75

20.0 16 75

MCA

41.5

46.6

28.6

28.6

30.9

16.8

14.6

15.1

11.9

12.8

12.8

32.8

35.1

35.1

16.8

17.6

18.6

14.0

14.8

14.8

MOCP

60.0

60.0

40.0

40.0

45.0

20.0

20.0

20.0

15.0

15.0

15.0

50.0

50.0

50.0

25.0

25.0

25.0

20.0

20.0

20.0

STD

208/260-1 - 60 0.48

MED

STD

208/260- 6- 60 MED 0.48

HIGH

STD

460-6-60 MED 0.25

HIGH

STD

575-6-60 MED 0.24

HIGH

STD

208/260- 6- 60 MED 0.48

HIGH

STD

460-6-60 MED 0.25

HIGH

STD

575-6-60 MED 0.24

HIGH

FLA LRA

40 154

46 179

28 130

28 148

61 174

14 62

14 71

15 84

12 49

13 66

13 66

32 161

35 187

35 187

17 81

17 94

19 103

14 66

15 77

15 77

1Fuse or breaker

LEGEND:

CO -Convenient outlet v Q US

DISC - Disconnect

FLA - Full load amps

IFM - Indoor fan motor

LRA - Locked rotor amps

MCA - Minimum circuit amps

MOCP - Maximum over current protection

PE - Power exhaust

UNPWR 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 de-

termine the percentage of voltage imbalance.

max voltage deviation from average voltage

% Voltage imbalance = 100 x average voltage

Example: Supply voltage is 260-3-60

AB =224 v

BC = 261 v

AC = 226 v

(224 + 231 + 226)

Average Voltage = 3

681

=3

= 227

Determine maximum deviation from average voltage.

(AB) 227 - 224 =3 v

(BC) 261 - 227 =4 v

(AC) 227- 226 =1 v

Maximum deviation is 4 v.

Determine percent of voltage imbalance.

4

% Voltage imbalance = 100 x 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.

40

I-- NOM. IFM FAN MOTOR

V-Ph-Hz TYPE FLA

208/230-1 -60

208/230- 3- 60

?

460- 3- 60

575- 3- 60

208/230-1 - 60

208/230- 3- 60

It)

?

460- 3- 60

575- 3- 60

Table 9 -- Unit Wire/MOCP Sizing Data (cont)

w/PWRD C.O.

COMBUSTION POWER NO RE.

EXHAUST

FLA

1.9

1.9

1.0

1.9

1.9

1.9

1.0

1.9

MCA

32.4

32.4

24.7

24.7

25.0

12.6

12.6

13.1

9.2

9.2

9.3

38.9

38.9

28.8

28.8

29.1

13.1

13.1

13.6

9.2

9.2

9.3

DISC. SIZE

MOCP FLA LRA

45.0 33 102

45.0 33 102

30.0 25 96

30.0 25 96

30.0 26 114

15.0 13 49

15.0 13 49

15.0 13 58

15.0 9 47

15.0 9 47

15.0 10 53

60.0 39 140

60.0 39 140

40.0 29 106

40.0 29 106

40.0 30 124

15.0 13 52

15.0 13 52

20.0 14 61

15.0 9 47

15.0 9 47

15.0 10 53

MCA

34.3

34.3

26.6

26.6

26.9

13.6

13.6

14.1

11.1

11.1

11.2

40.8

40.8

30.7

30.7

31.0

14.1

14.1

14.6

11.1

11.1

11.2

w/RE. (pwrd fr/unit)

DISC. SIZE

MOCP FLA LRA

50.0 35 104

50.0 35 104

30.0 28 98

30.0 28 98

30.0 28 116

20.0 14 50

20.0 14 50

20.0 15 59

15.0 12 49

15.0 12 49

15.0 12 55

60.0 41 142

60.0 41 142

40.0 31 108

40.0 31 108

40.0 32 126

20.0 14 53

20.0 14 53

20.0 15 62

15.0 12 49

15.0 12 49

15.0 12 55

STD 0.48

MED

STD

MED 0.48

HIGH

STD

MED 0.25

HIGH

STD

MED 0.24

HIGH

STD 0.48

MED

STD

MED 0.48

HIGH

STD

MED 0.25

HIGH

STD

MED 0.24

HIGH

1Fuse or breaker

LEGEND:

CO

DISC

FLA

IFM

LRA

MCA

MOCP

PE

UNPWR CO -

NOTES:

Example: Supply voltage is 230-3-60

C°nvenient°utlet QUS _

Disconnect AB = 224 v

Full load amps C BC = 231 v

Indoor fan motor AC = 226 v

Locked rotor amps

Minimum circuit amps (224 + 231 +226)

Maximum over current protection Average Voltage =

Power exhaust 3

Unpowered convenient outlet

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 de-

termine the percentage of voltage imbalance.

max voltage deviation from average voltage

% Voltage imbalance = 1O0 x average voltage

681

=3

= 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.

4

% Voltage imbalance = 100 x 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.

41

_D

?

-k

0

NOM.

V-Ph-Hz

IFM FAN MOTOR

TYPE FLA

Table 9 -- Unit Wire/MOCP Sizing Data (cont)

w/PWRD C.O.

COMBUSTION POWER NO RE.

EXHAUST

FLA

1.9

1.9

1.0

1.9

1.9

1.0

1.9

MCA

44.4

46.5

31.2

31.5

36.8

15.0

15.5

16.6

11.7

12.6

12.6

35.7

38.0

38.0

18.0

18.8

19.8

13.8

14.6

14.6

DISC. SIZE

MOCP FLA LRA

60.0 44 157

60.0 46 182

45.0 31 133

45.0 32 151

45.0 34 177

20.0 15 63

20.0 16 72

20.0 17 85

15.0 12 49

15.0 13 66

15.0 13 66

50.0 36 164

50.0 38 190

50.0 38 190

25.0 18 82

25.0 19 95

25.0 20 104

20.0 14 66

20.0 15 77

20.0 15 77

MCA

46.3

48.4

33.1

33.4

35.7

16.0

16.5

17.3

13.6

14.5

14.5

37.6

39.9

39.9

19.0

19.8

20.8

15.7

16.5

16.5

w/RE. (pwrd fr/unit)

DISC. SIZE

MOCP FLA LRA

60.0 46 159

60.0 48 184

45.0 34 165

45.0 34 156

50.0 67 179

20.0 16 64

20.0 17 76

20.0 18 86

20.0 14 51

20.0 15 68

20.0 15 68

50.0 68 166

50.0 40 192

50.0 40 192

25.0 19 86

25.0 20 96

60.0 21 105

20.0 16 68

20.0 17 79

20.0 17 79

STD

208/260-1 - 60 0.48

MED

STD

208/260- 3- 60 MED 0.48

HIGH

STD

460-6-60 MED 0.25

HIGH

STD

575-6-60 MED 0.24

HIGH

STD

208/260- 3- 60 MED 0.48

HIGH

STD

460-6-60 MED 0.25

HIGH

STD

575-6-60 MED 0.24

HIGH

1Fuse or breaker

LEGEND:

CO

DISC

FLA

IFM

LRA

MCA

MOCP

PE

UNPWR CO -

NOTES:

Example: Supply voltage is 260-3-60

C°nvenient°utlet QUS _

Disconnect AB = 224 v

Full load amps CBC = 231 v

Indoor fan motor AC = 226 v

Locked rotor amps

Minimum circuit amps (224 + 231 +226)

Maximum over current protection Average Voltage =

Power exhaust 3

Unpowered convenient outlet

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 de-

termine the percentage of voltage imbalance.

max voltage deviation from average voltage

% Voltage imbalance = 1O0 x average voltage

681

=3

= 227

Determine maximum deviation from average voltage.

(AB) 227 - 224 = 3 v

(BC) 261 - 227 = 4 v

(AC) 227- 226 = 1 v

Maximum deviation is 4 v.

Determine percent of voltage imbalance.

4

% Voltage imbalance = 100 x 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.

42

POTENTIOMETER DEFAULTS SETTINGS:

POWER EXH MIDDLE

MINIMUM POS FULLY CLOSED

DCV MAX MIDDLE

DCV SET MIDDLE

ENTHALPY C SETTING

I (ACCESSORY) 1

REMOTE MIN

POSITION POT

_rF_SA_C_Ri;

AO SENSOR

BLU F

"OATTE--'%7

E,_,ALPYSERSOR

BLK --RED

IRAT/ENTHALPY SENSOF

B'L,

.pNK_ TI T_

EXH

SET

2V IOV

NIN0 POS

T-_--J-

OPE_

DCV

MAX

SO 2V I OV

COOL

o c

ECONOMIZER

PNI<

VEO-

[D B

ECONOMIZER NOTES:

l 620 OHM, l WATT 5% RESISTER SHOULD BE REMOVED ONLY WHEN --I

USING DIFFERENTIAL ENTHALPY OR DRY BULB i

2 IF A SEPERATE FIELD SUPPLIED 24V TRANSFORMER IS USED FOR THE TAN

IAO SENSOR POWER SUPPLY, IT CANNOT HAVE THE SECONDARY OF THE I

TRANSFORMER GROUNDED A

3 FOR FIELD INSTALLED REMOTE MINIMUM POSITION POT,

REMOVE BLACK WIRE JUMPER BETWEEN P AND Pl AND SET TO PWR EXHAUST

CONTROL MINIMUM POSITION POT TO THE MINIMUM POSITION ACCESSORY

(FIOPIACCESSORY)

BRN--

RED--

"GRA--

"ORN--

(NOT USED)

PL6-R

L<

E_

:<

12 I

-<

_.J

Fig. 71 -EconoMi$er IV Wiring

C09302

Step 14 -- Adjust Factory-Installed Options

Smoke Detectors --

Smoke detector(s) will be connected at the Controls

Connections Board, at terminals marked "Smoke

Shutdown". Cut jumper JMP 3 when ready to energize

unit.

EconoMi$er IV Occupancy Switch --

Refer to Fig. 71 for general EconoMi$er IV wiring.

External occupancy control is managed through a

connection on the Controls Connections Board.

If external occupancy control is desired, connect a time

clock or remotely controlled switch (closed for Occupied,

open for Unoccupied sequence) at terminals marked

OCCUPANCY. Cut jumper JMP 2 to complete the

installation.

Step 15 -- Install Accessories

Available accessories include:

Curb

Thru-base connection kit (must be installed before unit

is set on curb)

LP conversion kit

Manual outside air damper

Two-Position motorized outside air damper

EconoMi$er IV (with control)

EconoMi$er2 (without control/for external signal)

Barometric relief

Power Exhaust

Differential dry-bulb sensor (EconoMi$er IV)

Outdoor enthalpy sensor

Differential enthalpy sensor

CO2 sensor

Smoke detector (Return Air and/or Supply Air)

DDC interface (PremierLink)

4-Inch filter tracks

Louvered hail guard

Hood-type hail guard

UV-C lamp kit

Phase monitor control

Refer to separate installation instructions for information

on installing these accessories.

Pre-Start and Start-Up --

This completes the mechanical installation of the unit.

Refer to the unit's Service Manual for detailed Pre-Start

and Start-Up instructions.

43

Copyright 2009 Carrier Corp. •7310 W. Morris St. • Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 06/09

Manufacturer reserves the right to change, at any time, specification8 and design8 without notice and without obligations,

Catalog No:48TC-05SI

Replaces: 48T0- lSl

44