Carrier 38HQ - Manual

Number One
Ai'rConditbninq
Maker
Divisiun uf
Carrier Corporation
Carrier Parkway • Syracuse NY 13221
Weathermaster III Heat Pump
(Outdoor Coil Section; Indoor Compressor Section)
INDEX
Page
SAFETY CONSIDERATIONS...............................1
INSTALLATION................................................... 1-8
Step 1 — Check Equipment and
Jobsite...............................................I
• UNPACKAGE UNITS
• INSPECT EQUIPMENT
• COMPLETE OR CONSIDER SYSTEM
REQUIREMENTS
Step 2 — Mount Outdoor Coil Unit.................... 3
• ON THE GROUND: MOUNT OUTDOOR
COIL ON A SOLID, LEVEL CON­
CRETE PAD
• ON THE ROOF: MOUNT OUTDOOR
COIL ON A LEVEL PLATFORM
OR FRAME
Step3 — Mount Indoor Compressor
Section............................................. 5
Step 4 — Make Piping Connections..................5
• REPLACE THE ACCURATER™ RE­
FRIGERANT CONTROL PISTON IN
THE INDOOR COIL AS REQUIRED
• CONNECT REFRIGERANT LINES
Step 5 — Make Electrical Connections .. 7
• INSTALL A BRANCH CIRCUIT
DISCONNECT PER NEC
• BRING LINE POWER LEADS INTO
COMPRESSOR SECTION
• CONNECT GROUND LEADS AND i
POWER WIRING
• CONNECT POWER LEADS FROM
INDOOR COMPRESSOR SECTION
TO OUTDOOR COIL
• SEE INDOOR FAN COIL AND
ELECTRIC HEATER INSTALLATION,
START-UP AND SERVICE
INSTRUCTIONS
• CONNECT CONTROL POWER
WIRING
START-UP........................................................... 8, 9
SERVICE............................................................10-17
MAINTENANCE ................................................. 17
© Carrier Corporation 1981
SAFETY CONSIDERATIONS
Installation and servicing of air conditioning
equipment can be hazardous due to system pressure
and electrical components. Only trained and quali­
fied
service personnel should install, repair or
service air conditioning equipment.
Untrained personnel can perform basic mainten­
ance functions of cleaning coils and filters and
replacing filters. 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.
Follow all safety codes. Wear safety glasses and
work gloves. Use quenching cloth for brazing and
unbrazing operations. Have fire extinguisher avail­
able for all brazing operations.
WARiNIMG: Before peri'orBEiisg: service or
laaintenaac« operadotis os. mtHL tiina oif rtsian
pow«f switch to ctait, T om OB' accessosy heater
power iwlich, if ap-ptlrcaiBe, Ekofticai shock
coold muse personal
INSTALLATION
Step 1 — Check Equipment and Jobsite
UNPACKAGE UNITS — Move to final location.
Slide from cartons taking special care not to damage
service valves. Compatible Fittings or grilles.
INSPECT EQUIPMENT — File claim with ship­
ping company if shipment is damaged or
incomplete.
COMPLETE OR CONSIDER SYSTEM RE­
QUIREMENTS before installing the 38HQ:
Consult local building codes and National
Electrical Code (NEC) for special installation
requirements.
When installing, allow sufficient space for airflow
clearance (outdoor unit), wiring, refrigerant piping
and servicing unit. Position outdoor unit so water or
ice from roof cannot drop directly on top of unit.
Maximum allowable vertical distance between
indoor and outdoor sections is 50 feet. It is strongly
recommended that 38HQ units be used with Carrier
approved indoor sections. See Table 3.
Form 38HQ-10SI