Carrier Crheater

SMALL ROOFTOP UNITS ACCESSORY ELECTRIC HEATER AND SINGLE POINT BOX ELECTRIC COOLING AND HEAT PUMP 2 to 121/2 TONS

CRHEATER101A00 CRHEATER119A00, CRHEATER125A00, CRHEATER364A00 CRHEATER369A00, CRSINGLE001A00 CRSINGLE053A00

Installation Instructions TABLE OF CONTENTS

SAFETY CONSIDERATIONS

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

Installation and servicing of air-- conditioning equipment can be hazardous due to system pressure and electrical components. Only trained and qualified service personnel should install, repair, or service air-conditioning equipment. Untrained personnel can perform the basic maintenance functions. All other operations should be performed by trained service personnel. When working on air-conditioning equipment, observe precautions in the literature, tags and labels attached to the unit, and other safety precautions that may apply.

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2 IMPORTANT: Read these instructions completely before attempting to install this accessory.

PACKAGE CONTENTS-ELECTRIC HEATER QTY

CONTENTS

1

Heater module

4

Screws

1

Wiring label

1

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

CONTENTS

1

Single point box

1

Bushing

5

Screws

1

Bracket and conduit drip boot assembly

1

Tube clamp (used only on 3 and 4 ton heat 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 cooling units with an MOCP of 60 or lower. Heater wires are to be terminated inside unit control box. ** Supplied with single point boxes CRSINGLE039A00, 045, 049, and 051 only.

Follow all safety codes. Wear safety glasses and work gloves. Recognize safety information. This is the safety-- alert . When you see this symbol on the unit and in symbol instructions or manuals, be alert to the potential for personal injury. Understand the signal words DANGER, WARNING, and CAUTION. These words are used with the safety-- alert symbol. DANGER identifies the most serious hazards which will result in severe personal injury or death. WARNING signifies a hazard which could result in personal injury or death. CAUTION is used to identify unsafe practices which may result in minor personal injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

!

WARNING

ELECTRICAL SHOCK HAZARD Failure to follow this warning could result in personal injury or death. Turn off power to unit and install lockout tag.

INSTALLATION

SINGLE POINT BOX DISCONNECT EMT OR RIGID CONDUIT (NOT SHIPPED CENTER MANUAL RESET WITH UNIT) MOUNTING (FIELD-SUPPLIED) LIMIT SWITCH POST LOCATION HEATER COVERS

1. Remove electric heater modules and single point box from packaging and inspect for damage. NOTE: If there is a “1” or a “3” in the ninth position of the heater part number, it indicates that the heater is in a carton. For example, CRHEATER105A00 is heater CRHEATER005A00 in a carton, and CRHEATER364A00 is heater CRHEATER264A00 in a carton. 2. Remove indoor and outdoor access panel. (See Fig. 1 and 2.) Save panels and screws.

SINGLE POINT MAIN BRACKET AND BOX HEATER HEATER HEATER CONTROL CONDUIT MOUNTING MODULE MODULE MOUNTING BOX DRIP BOOT SCREW (LOCATION 1) (LOCATION 2) BRACKET CONTROL WIRE TERMINAL BLOCK

DISCONNECT MOUNTING LOCATION

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

21

11

23

13

CONTROL BOX

C08451

BUSHING

UNIT BLOCK-OFF PANEL

OUTDOOR ACCESS PANEL

SINGLE POINT BOX MOUNTING SCREWS

INDOOR ACCESS PANEL

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

C08133

DRIP BOOT BRACKET MOUNTING SCREWS POWER WIRES 21

23 13

FOAM BUSHING

11

DISCONNECT MOUNTING LOCATION

ALLIED PA CORP.

MODEL NO.

OD

ERIAL NO.

22.2 ISTED AIR NDITIONING UIP ACCESS 346N

23

.

P/N

2-

1 3 5610-4

REV

HEATER RELAYS HEATER MOUNTING SCREWS

Fig. 4 - Typical Single Point Kit Installation S UNIT BLOCK-OFF PANEL

OUTDOOR ACCESS PANEL

INDOOR ACCESS PANEL

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

C08416

3. Remove control box cover and center post. Save screws. (See Fig. 3) 4. Remove the single point box cover. Secure single point box to the underside of the control box with the 2 screws provided. (See Fig. 4.) S On R-- 410A units, which use single point boxes CRSINGLE037A00 through CRSINGE053A00, all bushings in the area of the control box where the single point box (SPB) mounts must be removed prior to securing the SPB to the control box (see Fig. 5). Also, for units installed in the Snow Belt, all unplugged holes in the bottom of the control box which are not used must be plugged before installing the SPB. Use foil tape or reinstall the bushings from the outside of the control box prior to securing the SPB (see Fig. 6). Reinstall bushing on the SPB pigtails (see Fig. 6). 2

C08136

On R-- 410A units with an MOCP > 60, which use single point boxes CRSINGLE039A00, 045A00, 049A00, and 051A00, two terminal blocks (TB10A and TB10B) and two attachment screws are provided. Install the two terminal block into the control box and terminate the two - 3 wire power pigtails as follows (see Fig. 7): — Pigtail #1 (from top fuse block; long blue wire with female terminal) — Connect black wire to C1-- 11 screw terminal, connect yellow wire to C1-- 13 screw terminal, connect blue wire to TB10A terminal block and move Compressor 1 blue wire from IFC-- 13 to TB10A terminal block. — Pigtail #2 (from second fuse block; long yellow wire with female terminal) — Connect black wire to IFC-- 11 screw terminal, connect blue wire to IFC-- 13 screw terminal, connect yellow wire to TB10B terminal block and move ID Fan yellow wire from C1-- 13 to TB10B terminal block. — Remove black jumper wire from C1-- 11 to IFC-- 11.

Fig. 5 - Control Box - Bushings to Remove

C09005

C09006

Fig. 6 - Bushings Replaced from Outside Control Box

Fig. 7 - Wiring Diagram 5. Secure the conduit drip boot bracket assembly to the back of the single point box with 2 of the screws provided. (See Fig. 4.) The channel portion of the bracket assembly extends to the top panel behind the control box. Secure all wires to bracket with field-- supplied wire tie as shown. (See Fig. 8.)

C09007

NOTE: The conduit drip boot and bracket are not used on standard efficiency 2 to 6 ton electric cooling units and R-- 410A 3-- 6 ton electric cooling units. 6. Remove heater cover(s) from heater mounting. bracket. Save screws. Install single module electric heat option in location 1 (nearest the single point box). (See Fig. , Fig. 9, and Fig. 10.)

3

NOTE: Modules CRHEATER105A00, CRHEATER 109A00, CRHEATER112A00, CRHEATER114A00, CRHEATER115A00, and CRHEATER119A00 are keyed and must be installed in location 1 even when used as part of a 2-- module option. (See Fig. 9 for 2 to 6 ton units or Fig. 10 for 71/2 to 121/2 ton units.)

KEY FOR MODULE LOCATON 1

NOTE: Modules (480-- v) CRHEATER265A00 through CRHEATER269A00 are keyed and must be installed in location 2. In addition, these modules are always used as a single module option. (See Fig. 11; R-- 410A 6 ton high efficiency units only.) 7. To install module, engage flange on heater with track in unit and slide heater through mounting bracket opening. Fasten heater module to heater mounting bracket with the 4 screws saved from Step 6. (See Fig. 4.) BD236B N—TRAN 3O—BV2075 E 60 HZ 30-8703 30V—OR 200V—RD OV—YL D 24V 75VA C—COMM

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

C09010

TRACK

FLANGE

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

CONDUIT

CONDUIT DRIP BOOT

WIRE TIE

Fig. 8 - Typical Conduit Installation

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

C08417

C09009

NOTE: All 208/230-- v heaters (except CRHEATER 105A00) are factory-- wired for 3-- phase applications but can be converted to single-- phase by changing one wire as described in Step 8. Three-- phase applications: Skip to Step 9. 8. On single-- phase applications, rewire the heater as follows (Fig. 13 and Fig, 14): a. Connect 10-- gauge red wire to splice connector. b. Remove yellow wire from heater contactor terminal 11 and connect to splice connector. c. Using the wire tie provided, fasten red wire to heater power wire harness near existing wire tie on heater module. This provides strain relief for the red wire.

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

Fig. 11 - Heater Bracket Keyway (R-- 410A 6 Ton High Efficiency Units Only) 4

C09008

9. Route power wires from heater module(s) through the foam bushing in the center partition and into the single point box. (See Fig. 4.) If no single point box is required for the unit and heater combination, run the heater high voltage power wiring through the grommet holes to the field-- supplied disconnect (or optional factory-- supplied 80 amp disconnect). Heater control wiring should be run to the control box section. 10. Install bushing in hole between control box and single point box. Route unit power pigtails through bushing. (See Fig. 4.)

RED WIRE

21

HEATER POWER WIRE HARNESS

23

11

13 MODEL NO.

OD

ERIAL NO.

SPLICE CONNECTOR

22.2 ISTED AIR NDITIONING UIP ACCESS 346N. P/N

23 2-

1 3 5610-4

REV

C08420

Fig. 14 - Typical Single-- Phase Wiring Installed

21

23

11

13 MODEL NO.

11. All fuses are 60 amp, time delay type, except for CRSINGLE025A00 which are 30 amps. All heaters are single bank heaters except CRHEATER011A00 and 012A00 which are dual bank heaters. The CRHEATER011A00 and 012A00 will be wired as two heaters (i.e., 6 leads). Fusing is shown pictorially on the unit wiring schematic label.

OD

The optional factory-- supplied disconnect has a maximum rating of 80 amps. Above 80 amps a field-- supplied disconnect is required.

ERIAL NO.

ISTED AIR NDITIONING UIP ACCESS 346N.

23

P/N

2-

1 3 5610-4

REV

Fig. 12 - Typical 3-- Phase Wiring Installed

Single point boxes CRSINGLE001A00, 006A00, 011A00, 037A00, 042A00, and 047A00 do not include fuses and fuses are not required per the National Electric Code in these single point boxes since sub-- fusing is not required below 60 amps. Field-- supplied pressure connectors are required to connect wires on CRSINGLE001A00, 006A00, and 011A00, R-- 410A single point boxes CRSINGLE037A00, 042A00, and 047A00 have a terminal block for heater termination.. 12. Run control wires from heater module(s) to the control wire terminal block located next to the heater module(s). Connect the control wires as follows: S Heat Pump Units — The electric heat is internally wired as the second stage of heat. S Electric Cooling Units — Electric cooling units with 2 electric heater modules can be wired for one-- or 2-- stage options as shown on the unit wiring schematic label. Connect single module heater option control wire (violet) to TB4 terminal 1. 13. Replace the center post and secure the single point box to the center post with one screw. (See Fig. 3.)

C08137

LEGEND HR -- Heater Relay HTR -- Heater LS -- Limit Switch

Fig. 13 - Single-- Phase Heater Wiring

C08419

5

14. Remove knockouts for appropriate size conduit from 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-- 1/2 inches. The drip boot eliminates the need for water-- tight conduit fittings at the single point box.

17. Set manual reset limit switch by depressing button located between the terminals on the switch. (See Fig. 3.) 18. Close single point box cover and secure with one screw. 19. Replace control box cover, using remainder of screws saved from Step 3. 20. Replace indoor and outdoor panels with screws saved from Step 2. 21. Turn on unit power. 22. Mark the appropriate block on the unit nameplate for the accessory heater kW installed.

NOTE: Supply wiring must comply with NEC (National Electric Code) and all local requirements. 15. Place adhesive-- backed wiring label on flanged side of heater cover. 16. Fasten heater cover to heater module with 2 screws provided with heater. Flanges of cover should face out.

6

7

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.

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Catalog No: IIK---CRHTRSIN01---02 Replaces: IIK--- CRHTRSIN01--- 01