8
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.
Excessive torque can break flare nut depending on
installation conditions.
Piping Connections to Outdoor Unit
IMPORTANT
:
Use refrigeration grade tubing ONLY. No other
type of tubing may be used. Use of other types of tubing will
void manufacturer’s warranty.
Make sure there is enough piping to cover the required length
between the outdoor and indoor unit.
Only use piping suitable for high side pressure for both high
side and low side connections.
Piping Guide:
S
Do not open service valves or remove protective caps from
tubing ends until all the connections are made.
S
Bend tubing with bending tools to avoid kinks and flat spots.
S
Keep the tubing free of dirt, sand, moisture, and other
contaminants to avoid damaging the refrigerant system.
S
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 saves time and improves
installation quality.
1. Remove service valve cover if provided with unit.
2. Cut tubing with tubing cutter.
3. Install correct size flare nut onto tubing and make flare
connection.
4. Apply a small amount of refrigerant oil to the flare
connection 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. 11.
A07354
Fig. 11
-
Tighten Flare Nut
Strong
wind
A07350
Fig. 12
-
High Wind Installation
Outdoor Unit Wiring Connections
1. Mount outdoor power disconnect.
2. Run power wiring from main box to disconnect per NEC
and local codes. Set outdoor unit in place.
3. Remove field wiring cover from unit by removing screws.
4. Connect conduit to the conduit panel. (See Fig. 13)
5. Properly connect both power supply and control lines to
terminal block per the connection diagram.
6. Ground unit in accordance with NEC and local electrical
codes.
7. Use lock nuts to secure conduit.
8. Reinstall field wiring cover.
lock nut
Finish
conduit
Field Wiring Cover
Conduit Panel
A12539
Fig. 13
-
Field Wiring
CAUTION
!
EQUIPMENT DAMAGE HAZARD
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.
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.
