Carrier 50PG03, Installation Instructions Manual

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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.)