CRHEATER101A00 --CRHEATER119A00,CRHEATER125A00,CRHEATER364A00 --CRHEATER369A00,CRSINGLE001A00 --CRSINGLE053A00

Installation Instructions

SMALL ROOFTOP UNITSACCESSORY ELECTRIC HEATER

AND SINGLE POINT BOXELECTRIC COOLING AND HEAT PUMP

2 to 121/2 TONS

TABLE OF CONTENTSSAFETY CONSIDERATIONS 1. . . . . . . . . . . . . . . . . . . .

INSTALLATION 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

IMPORTANT: Read these instructions completely beforeattempting to install this accessory.

PACKAGE CONTENTS--ELECTRIC HEATER

QTY CONTENTS1 Heater module4 Screws1 Wiring label1 Red wire (10 gauge)*1 Splice connector*1 Wire tie*

* Supplied with electric heater packages CRHEATER101A00,CRHEATER102A00, CRHEATER103A00, and CRHEATER104A00 only.

PACKAGE CONTENTS--SINGLE POINT KIT*

QTY CONTENTS1 Single point box1 Bushing5 Screws1 Bracket and conduit drip boot assembly

1 Tube clamp (used only on 3 and 4 tonheat pump units)

2 Terminal Blocks (TB10A and TB10B)**2 Screws (for TB10’s)**

* Single point kit not required on standard efficiency, 2 to 6 ton coolingunits with an MOCP of 60 or lower. Heater wires are to be terminatedinside unit control box.

** Supplied with single point boxes CRSINGLE039A00, 045, 049, and 051only.

SAFETY CONSIDERATIONSInstallation and servicing of air--conditioning equipmentcan be hazardous due to system pressure and electricalcomponents. Only trained and qualified service personnelshould install, repair, or service air-conditioningequipment.

Untrained personnel can perform the basic maintenancefunctions. All other operations should be performed bytrained service personnel. When working onair-conditioning equipment, observe precautions in theliterature, tags and labels attached to the unit, and othersafety precautions that may apply.

Follow all safety codes. Wear safety glasses and workgloves.

Recognize safety information. This is the safety--alert

symbol . When you see this symbol on the unit and ininstructions or manuals, be alert to the potential forpersonal injury.

Understand the signal words DANGER, WARNING, andCAUTION. These words are used with the safety--alertsymbol. DANGER identifies the most serious hazardswhich will result in severe personal injury or death.WARNING signifies a hazard which could result inpersonal injury or death. CAUTION is used to identifyunsafe practices which may result in minor personalinjury or product and property damage. NOTE is used tohighlight suggestions which will result in enhancedinstallation, reliability, or operation.

ELECTRICAL SHOCK HAZARD

Failure to follow this warning could result in personalinjury or death.

Turn off power to unit and install lockout tag.

! WARNING

2

INSTALLATION1. Remove electric heater modules and single pointbox from packaging and inspect for damage.

NOTE: If there is a “1” or a “3” in the ninth position ofthe heater part number, it indicates that the heater is in acarton. For example, CRHEATER105A00 is heaterCRHEATER005A00 in a carton, and CRHEATER364A00is heater CRHEATER264A00 in a carton.

2. Remove indoor and outdoor access panel. (See Fig.1 and 2.) Save panels and screws.

DISCONNECT MOUNTINGLOCATION

UNIT BLOCK-OFFPANEL

OUTDOORACCESS PANEL

INDOORACCESSPANEL

C08133

Fig. 1 -- Typical Access Panel Location(2 to 6 Ton Units)

DISCONNECT MOUNTINGLOCATION

UNITBLOCK-OFFPANEL

OUTDOORACCESS PANEL

INDOORACCESSPANEL

C08416

Fig. 2 -- Typical Access Panel Location(71/2 to 121/2 Ton Units)

3. Remove control box cover and center post. Savescrews. (See Fig. 3)

4. Remove the single point box cover. Secure singlepoint box to the underside of the control box withthe 2 screws provided. (See Fig. 4.)

S On R--410A units, which use single point boxesCRSINGLE037A00 through CRSINGE053A00,all bushings in the area of the control box where thesingle point box (SPB) mounts must be removedprior to securing the SPB to the control box (seeFig. 5). Also, for units installed in the Snow Belt,all unplugged holes in the bottom of the control boxwhich are not used must be plugged beforeinstalling the SPB. Use foil tape or reinstall thebushings from the outside of the control box priorto securing the SPB (see Fig. 6). Reinstall bushingon the SPB pigtails (see Fig. 6).

DISCONNECT MOUNTING LOCA TION

EM T OR RIGID CONDUIT (FIELD-SUPPLIED)

SINGLE POINT (NOT SHIPPED WITH UNIT)

BO X CENTER POST

HEA TER COVERS

HEA TER MOUNTING BRACKET

HEA TER MODULE (LOCA TION 2)

HEA TER MODULE (LOCA TION 1)

SINGLE POINT BO X MOUNTING SCREW

BRACKET AND CONDUIT DRIP BOOT

MAIN CONTROL BO X

CONTRO L WIRE TERMINAL BLOCK

MANUAL RESET LIMIT SWITCH

C08451

Fig. 3 -- Typical Component Location(2 to 6 Ton R--22 Unit Shown)

ALLIED PA

MODEL NO.

ERIAL NO.

CORP.

1113

2123

OD

22.2

3123

ISTED AIRNDITIONINGUIP ACCESS 346N.

P / N 2- 5610-4 REV

1113

2123

CONTROLBOX

BUSHING

SINGLEPOINT BOXMOUNTINGSCREWS

FOAMBUSHING

DRIP BOOTBRACKETMOUNTINGSCREWS

HEATERRELAYS

POWERWIRES

HEATERMOUNTINGSCREWS

C08136

Fig. 4 -- Typical Single Point Kit Installation

S On R--410A units with an MOCP > 60, which usesingle point boxes CRSINGLE039A00, 045A00,049A00, and 051A00, two terminal blocks (TB10Aand TB10B) and two attachment screws areprovided. Install the two terminal block into thecontrol box and terminate the two -- 3 wire powerpigtails as follows (see Fig. 7):

— Pigtail #1 (from top fuse block; long bluewire with female terminal) — Connectblack wire to C1--11 screw terminal,connect yellow wire to C1--13 screwterminal, connect blue wire to TB10Aterminal block andmoveCompressor 1 bluewire from IFC--13 to TB10A terminalblock.

— Pigtail #2 (from second fuse block; longyellow wire with female terminal) —Connect black wire to IFC--11 screwterminal, connect blue wire to IFC--13screw terminal, connect yellow wire toTB10B terminal block and move ID Fanyellowwire from C1--13 to TB10B terminalblock.

— Remove black jumper wire from C1--11 toIFC--11.

3

C09005

Fig. 5 -- Control Box -- Bushings to RemoveC09006

Fig. 6 -- Bushings Replaced from Outside Control Box

C09007

Fig. 7 -- Wiring Diagram

5. Secure the conduit drip boot bracket assembly to theback of the single point box with 2 of the screwsprovided. (See Fig. 4.) The channel portion of thebracket assembly extends to the top panel behindthe control box. Secure all wires to bracket withfield--supplied wire tie as shown. (See Fig. 8.)

NOTE: The conduit drip boot and bracket are not usedon standard efficiency 2 to 6 ton electric cooling units andR--410A 3--6 ton electric cooling units.

6. Remove heater cover(s) from heater mounting.bracket. Save screws. Install single module electricheat option in location 1 (nearest the single pointbox). (See Fig. , Fig. 9, and Fig. 10.)

4

NOTE: Modules CRHEATER105A00, CRHEATER109A00, CRHEATER112A00, CRHEATER114A00,CRHEATER115A00, and CRHEATER119A00 are keyedand must be installed in location 1 even when used as partof a 2--module option. (See Fig. 9 for 2 to 6 ton units orFig. 10 for 71/2 to 121/2 ton units.)

NOTE: Modules (480--v) CRHEATER265A00 throughCRHEATER269A00 are keyed and must be installed inlocation 2. In addition, these modules are always used as asingle module option. (See Fig. 11; R--410A 6 ton highefficiency units only.)

7. To install module, engage flange on heater withtrack in unit and slide heater through mountingbracket opening. Fasten heater module to heatermounting bracket with the 4 screws saved fromStep 6. (See Fig. 4.)

CONDUIT CONDUITDRIP BOOT

WIRE TIE

C—

CO

MM

30V—

OR

200V—

RD

OV

—Y

LD

24V 75VA

BD

236BN

—T

RA

N 3O

—B

V2075

E 60 H

Z 30-8703

C08417

Fig. 8 -- Typical Conduit Installation

NOTE: All 208/230--v heaters (except CRHEATER105A00) are factory--wired for 3--phase applications butcan be converted to single--phase by changing one wire asdescribed in Step 8.

Three--phase applications: Skip to Step 9.

8. On single--phase applications, rewire the heater asfollows (Fig. 13 and Fig, 14):

a. Connect 10--gauge red wire to splice connector.

b. Remove yellow wire from heater contactorterminal 11 and connect to splice connector.

c. Using the wire tie provided, fasten red wire toheater power wire harness near existing wire tieon heater module. This provides strain relief forthe red wire.

KEY FOR MODULE LOCATON 1

C09010

Fig. 9 -- Typical Electric Heat Installation(2 to 6 Ton Units)

TRACK

FLANGE

KEY FOR MODULE LOCATION 1 (71/2 TO 121/2 TON UNITS)

C09009

Fig. 10 -- Typical Module Installation(71/2 to 121/2 Ton Units)

KEYWAY FOR MODULE LOCATION 2(R-410A 6 TON HIGH EFFCIENCY UNITS ONLY)

C09008

Fig. 11 -- Heater Bracket Keyway(R--410A 6 Ton High Efficiency Units Only)

5

9. Route power wires from heater module(s) throughthe foam bushing in the center partition and into thesingle point box. (See Fig. 4.) If no single point boxis required for the unit and heater combination, runthe heater high voltage power wiring through thegrommet holes to the field--supplied disconnect (oroptional factory--supplied 80 amp disconnect).Heater control wiring should be run to the controlbox section.

10. Install bushing in hole between control box andsingle point box. Route unit power pigtails throughbushing. (See Fig. 4.)

MODEL NO.

ERIAL NO.

1113

2123

OD

3123

ISTED AIRNDITIONINGUIP ACCESS 346N.

P / N 2- 5610-4 REV

C08137

Fig. 12 -- Typical 3--Phase Wiring Installed

LEGENDHR -- Heater RelayHTR -- HeaterLS -- Limit Switch

C08419

Fig. 13 -- Single--Phase Heater Wiring

MODEL NO.

ERIAL NO.

1113

2123

OD

22.2

3123

ISTED AIRNDITIONINGUIP ACCESS 346N.

P / N 2- 5610-4 REV

RED WIRE

SPLICECONNECTOR

HEATERPOWERWIREHARNESS

C08420

Fig. 14 -- Typical Single--Phase Wiring Installed

11. All fuses are 60 amp, time delay type, except forCRSINGLE025A00 which are 30 amps. All heatersare single bank heaters except CRHEATER011A00and 012A00 which are dual bank heaters. TheCRHEATER011A00 and 012A00 will be wired astwo heaters (i.e., 6 leads). Fusing is shown pictori-ally on the unit wiring schematic label.

The optional factory--supplied disconnect has amaximum rating of 80 amps. Above 80 amps afield--supplied disconnect is required.

Single point boxes CRSINGLE001A00, 006A00,011A00, 037A00, 042A00, and 047A00 do notinclude fuses and fuses are not required per theNational Electric Code in these single point boxessince sub--fusing is not required below 60 amps.Field--supplied pressure connectors are required toconnect wires on CRSINGLE001A00, 006A00, and011A00, R--410A single point boxesCRSINGLE037A00, 042A00, and 047A00 have a ter-minal block for heater termination..

12. Run control wires from heater module(s) to thecontrol wire terminal block located next to theheater module(s). Connect the control wires as fol-lows:

S Heat Pump Units

— The electric heat is internally wired as thesecond stage of heat.

S Electric Cooling Units

— Electric cooling units with 2 electric heatermodules can be wired for one-- or 2--stageoptions as shown on the unit wiringschematic label. Connect single moduleheater option control wire (violet) to TB4terminal 1.

13. Replace the center post and secure the single pointbox to the center post with one screw. (See Fig. 3.)

6

14. Remove knockouts for appropriate size conduitfrom unit block--off panel and single point box.Install conduit (rigid or electro--metallic tubing)through conduit drip boot as shown. (See Fig. 8.)Drip boot will accept conduit sizes 3/4--in. to 1--1/2inches. The drip boot eliminates the need forwater--tight conduit fittings at the single point box.

NOTE: Supply wiring must comply with NEC (NationalElectric Code) and all local requirements.

15. Place adhesive--backed wiring label on flanged sideof heater cover.

16. Fasten heater cover to heater module with 2 screwsprovided with heater. Flanges of cover should faceout.

17. Set manual reset limit switch by depressing buttonlocated between the terminals on the switch. (SeeFig. 3.)

18. Close single point box cover and secure with onescrew.

19. Replace control box cover, using remainder ofscrews saved from Step 3.

20. Replace indoor and outdoor panels with screwssaved from Step 2.

21. Turn on unit power.

22. Mark the appropriate block on the unit nameplatefor the accessory heater kW installed.

7

8

Copyright 2009 Carrier Corp. D 7310 W. Morris St. D Indianapolis, IN 46231 Printed in U.S.A. Edition Date: 01/09

Manufacturer reserves the right to change, at any time, specifications and designs without notice and without obligations.

Catalog No: IIK---CRHTRSIN01---02

Replaces: IIK---CRHTRSIN01---01