Caution – Carrier 40GXQ User Manual

Page 7

If piping is going through the right or left side:

1. Use a small saw blade to carefully remove the correspond-

ing plastic covering on side panel and drill the appropriate

size hole where the pipe is going through the wall. See Fig.
8(c).

2. Remove knockout 1 if you are running only the wiring.

Remove knockout 1 and 2 or knockout 1, 2 and 3 if you are

running both piping and wiring through the side of the unit.

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.
Piping Guide:
S

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.
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.

A07354

Fig. 10

--- Tighten Flare Nut

INSTALL ALL POWER AND INTERCONNECTING

WIRING TO OUTDOOR UNIT

Strong

wind

A07350

Fig. 11

--- 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 (on sizes 9k, 12k, and 18k) from

unit by removing screws. On size 24k, use the knockout

provided on the end panel.

4. Connect conduit to the conduit panel on sizes 9k, 12k, and

18k. (See Fig. 12)

5. Properly connect both power supply and control lines to ter-

minal 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 on 9k, 12k, and 18k units.

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.

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.

No wire should be allowed to touch refrigerant tubing,

compressor or any moving parts.

Disconnecting means must be provided and shall be

located within sight and readily accessible from the air

conditioner.

Connecting cable with conduit shall be routed through

hole in the conduit panel.

38/

40GX

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