Carrier 50PG03-16 installation instructions Installation Instructions

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.

injury or product and property damage. NOTE is used to highlight suggestions which will result in enhanced installation, reliability, or operation.

! CAUTION

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.

TABLE OF CONTENTS

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

GENERAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

INSTALLATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-31

Heater Installation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1

Install Single Point Box . . . . . . . . . . . . . . . . . . . . . . . . . . . 4

Configuring ComfortLinkt 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

! 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.

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.)