Carrier BCQ018 Installation, Start-Up And Service Instructions Manual

Cooling Model Heat Pump
BCC018 BCQ018
BCC024 BCQ024
Installation, Start-Up and Service Instructions
CONTENTS
SAFETY CONSIDERATIONS ................................ 1
GENERAL ........................................................... 1-6
INSTALLATION ................................................ 6-13
Indoor Unit Installation ........................................ 6
Outdoor Unit Installation ..................................... 8
Power Supply ....................................................... 9
Leak Test ............................................................... 9
Wiring Diagrams ............................................ 11-12
START-UP ........................................................... 13
System Checks ................................................... 13
CARE AND MAINTENANCE ............................... 13
Outdoor Units ..................................................... 13
Indoor Units ........................................................ 13
To Clean the Indoor Unit Front Panel ............... 13
To Clean Indoor Coil .......................................... 13
Air Filters for Indoor Units ................................ 13
SERVICE ............................................................. 13
TROUBLESHOOTING .................................... 14-17

SAFETY CONSIDERATIONS

Installing, starting up, and servicing air-conditioning equip-
ment can be hazardous due to system pressures, electrical compo-
nents, and equipment location (roofs, elevated structures, etc.).
Only trained, qualified installers and service mechanics should
install, start-up, and service this equipment.
Untrained personnel can perform basic maintenance func-
tions such as cleaning coils. All other operations should be per-
formed by trained service personnel.
When working on the equipment, observe precautions in the
literature and on tags, stickers, and labels attached to the equip-
ment.
Follow all safety codes. Wear safety glasses and work gloves.
Keep quenching cloth and fire extinguisher nearby when brazing.
Use care in handling, rigging, and setting bulky equipment.
WARNING
Before installing or servicing system, always turn off main power
to system and install lockout tag on disconnect. There may be
more than one disconnect switch. Electrical shock can cause
personal injury.

GENERAL

These instructions cover the installation, start-up and servic-
ing of 38BCC/BCQ outdoor and 40BNC/BNQ indoor units cool-
ing only and heat pump duct free systems. See Table 1 for parts
included. See Tables 2 and 3 for Physical Data.

System Requirements

IMPORTANT: The Indoor units & the inter units cable
voltage is 30 VDC.
IMPORTANT: Each refrigerant line must be insulated
Separately. See line sizing requirements in tabel 2.
Manufacturer reserves the right to discontinue, or change at any time, specifications or designs without notice and without inc.
R-22
• Consult local building codes and National Electrical Code
Page
(NEC, U.S.A.) for special installation requirements.
Max. cable length. Total voltage drop should not exceed 1V.
Therefore max. length:
For #18 AWG
For #16 AWG
For #14 AWG
• Use only type "G" or "C" fuses. Use single length power
cable without extension. Allow sufficient space for airflow
clearance on condensing units for wiring, refrigerant piping,
and servicing unit. See Fig. 1 and 2 for minimum required
distances between unit and walls or ceilings.
• Indoor and outdoor units should be installed at a
Minimum length of 10 ft. apart.
Maximum line length of 50 ft. and
vertical separation of 30 ft.
• Do not install indoor units near a direct source of heat such as
direct sunlight, steam or flame.
Do not bury more than 36 in. of refrigerant pipe in the ground. If
any section of pipe is buried, there must be a 6 in. vertical rise to
the valve connections on the outdoor units. If more than the rec-
ommended length is buried, refrigerant may migrate to the cooler
buried section during extended periods of system shutdown. This
causes refriger-ant slugging and could possibly damage the com-
pressor at start-up.
LEFT (min.)
6" (0.15m)
FRONT (min.)
2" (0.6m)
Fig. 1 - 38BCC/BCQ 018, 024 Outdoor Unit Clearances
Pg 1
1
51302618918-C 0606
BCC/BCQ 018, 024
Duct Free Systems
24.3 Feet (7.4 m)
37.7 Feet (11.5 m)
50.0 Feet (18 m)
CAUTION
TOP (min.)
2" (0.6m)
Printed in Israel
REAR (min.)
6" (0.15m)
RIGHT (min.)
2" (0.6m)