Outdoor Unit Installation; Install All Power And Interconnecting Wiring To Outdoor Unit - Carrier 40MFC Installation Instructions Manual

OUTDOOR UNIT INSTALLATION

1. Use a rigid base to support unit in a level position.
2. Locate outdoor unit and connect piping and wiring.
CAUTION
!
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment damage
or improper operation.
In regions with snowfall and cold temperatures, avoid
installing the outdoor unit in areas where it can be covered by
snow. If the outdoor unit is installed in areas where heavy
snow is expected, a field supplied ice or snow stand and/or
field supplied- -installed wind baffle should be installed to
protect the unit from snow accumulation and/or blocked air
intake. Blocking the air intake may result in reduced airflow,
significantly reduced performance and damage to the
equipment.
Strong
wind
Fig. 9 --- High Wind Installation
MAKE REFRIGERANT PIPING CONNECTIONS
(OUTDOOR UNIT)
IMPORTANT: Use refrigeration grade tubing ONLY.
other type of tubing may be used. Use of other types of tubing
will void manufacturer's warranty.
Do not open service valves or remove protective caps from tubing
ends until all the connections are made.
Bend tubing with bending tools to avoid kinks and flat spots.
Keep the tubing free of dirt, sand, moisture, and other
contaminants to avoid damaging the refrigerant system.
Avoid sags in the suction line to prevent the formation of oil traps.
Insulate each tube with minimum 3/8- -in. (10 mm) wall thermal
pipe insulation. Inserting the tubing into the insulation before
making the connections will save time and improve installation
quality.
1. Remove service valve cover if provided with unit.
2. Cut tubing with tubing cutter. Remove service connection
if provided with unit.
3. Install correct size flare nut onto tubing and make flare con-
nection.
4. Apply a small amount of refrigerant oil to the flare connec-
tion on the tubing.
5. Properly align tubing in with service valve.
6. Tighten flare nut and finish installation using two wrenches
as shown in Fig. 10.
Fig. 10 --- Tighten Flare Nut
EQUIPMENT DAMAGE HAZARD
Failure to follow this caution may result in equipment
damage or improper operation.
Excessive torque can break flare nut depending on
installation conditions.
INSTALL ALL POWER AND INTERCONNECTING
WIRING TO OUTDOOR UNITS
1. Mount outdoor power disconnect.
2. Run power wiring from main box to disconnect per NEC
3. Remove field wiring cover from unit by loosening screws.
4. Remove caps on conduit panel.
5. Connect conduit to conduit panel. (See Fig.11 )
6. Properly connect both power supply and control lines to ter-
7. Ground unit in accordance with NEC and local electrical
8. Use lock nuts to secure conduit.
9. Reinstall field wiring cover.
EQUIPMENT DAMAGE HAZARD
A07350
Failure to follow this caution may result in equipment
damage or improper operation.
S Be sure to comply with local codes while running wire
from indoor unit to outdoor unit.
No
S Every wire must be connected firmly. Loose wiring may
cause terminal to overheat or result in unit malfunction.
A fire hazard may also exist. Therefore, be sure all wiring
is tightly connected.
S No wire should be allowed to touch refrigerant tubing,
compressor or any moving parts.
S Disconnecting means must be provided and shall be
located within sight and readily accessible from the air
conditioner.
S Connecting cable with conduit shall be routed through
hole in the conduit panel.
A07354
8
CAUTION
!
and local codes.
minal block per the connection diagram for the appropriate
unit capacity and voltage. (See Fig. 12)
codes.
CAUTION
!
Outdoor unit
Terminal Block
Fig. 11 --- Field Wiring
Conduit panel
G
Conduit
A07455