Carrier 50PG03-16- Manual

50PG03−16
Single−Package Rooftop Units
Electric Heater and
Single Point Box Accessories

Installation Instructions

Heater Part Numbers: CRHEATER200A00 through CRHEATER263A00

Single Point Box Part Numbers: CSINGLE028A00 through CRSINGLE036A00

HEATER PACKAGE CONTENTS

ITEM

QUANTITY

Heater Module

1

Wiring Label

1

SINGLE POINT BOX PACKAGE CONTENTS

ITEM

QUANTITY

Single Point Box

1

Terminal Block

*

Wiring Label

1

Fuse Block†

*

* Quantity varies by kit.
† If single point box has fuses, contents will include a hinged cover,

rivets, and magnetic latch.

TABLE OF CONTENTS

SAFETY CONSIDERATIONS

1

. . . . . . . . . . . . . . . . . . . . . . . .

GENERAL

1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

INSTALLATION

1-31

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Heater Installation

1

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Install Single Point Box

4

. . . . . . . . . . . . . . . . . . . . . . . . . . .

Configuring ComfortLink

t

Control

4

. . . . . . . . . . . . . . . . .

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 kits or accessories when installing.
Follow all safety codes. Wear safety glasses and work gloves. Use

quenching cloth for brazing operations. Have fire extinguisher

available. Read these instructions thoroughly and follow all

warnings or cautions attached to the unit. Consult local building

codes and National Electrical Code (NEC) for special

requirements.
Recognize safety information. This is the safety

−

alert symbol

. When you see this symbol on the furnace and in

instructions or manuals, be alert to the potential for personal

injury.
Understand the signal words DANGER, WARNING, and

CAUTION. These words are used with the safety

−

alert symbol.

DANGER identifies the most serious hazards which

will

result in

severe personal injury or death. WARNING signifies a hazard

which

could

result in personal injury or death. CAUTION is used

to identify unsafe practices which

may

result in minor personal

injury or product and property damage. NOTE is used to

highlight suggestions which

will

result in enhanced installation,

reliability, or operation.

ELECTRICAL OPERATION HAZARD

Failure to follow this caution may cause personal injury and

damage to equipment.
Field modification of electric heat staging may result in the

overriding of electric heat safety switches and is prohibited.

CAUTION

!

PROPERTY DAMAGE HAZARD

Failure to follow this caution may result in property

damage.
When removing panels from the unit, be careful not to

damage the roof or other surfaces with the panels.

CAUTION

!

GENERAL

This installation instruction covers accessory heaters

CRHEATER200A00 through CRHEATER263A00. A single

point box may be required for some heaters. The single point box

must be ordered separately when required.

INSTALLATION

Heater Installation

Perform the following procedure to install the accessory electric

heaters:

1. Turn off power to the unit. Install “Lock

−

Out Tag

−

Out”

tag on unit disconnect or breaker.

2. Configure unit for horizontal duct configuration, if

desired.

NOTE

: The 50PG16 size requires an accessory conversion kit

for converting from vertical to horizontal duct configuration.

3. Permanently mark the appropriate block on the unit

nameplate for the accessory heater installed.

4. Verify unit input power wire sizing and circuit protection

per requirements on the unit nameplate for the accessory

heater installed.

5. Open the electric heater section, compressor section, and

indoor fan section access doors. (See Fig. 1.)