Use and Care Manual

4.3.4 Connecting the Pipes at the Outdoor

Tighten the are nut of the connection pipe at the outdoor unit

valve connector. The tightening method is the same torque method

used on the indoor side.

4.3.5 Checking the Pipe Connections for Gas Leaks

For both indoor and outdoor unit side, check for gas

leaks at connection joints with gas leakage detector.

Fig.4.13

4.3.6 Insulation on the Pipe Joints (Indoor Side Only)

Completely cover connection joints with insulation to present sweating.

Fig.4.14

4.3.7 Liquid Pipe and Drain Pipe

Sealed

Drain

pipe

clamps

If the outdoor unit is installed lower than

the indoor unit (See Fig.4.15)

(1). The drain pipe should be on the ground.

The end of the drain pipe can't be submerged

in water. All pipes must be

bundled to the wall with attaching clamp.

(2). If taping pipe, it must be done from

bottom to top.

(3). All pipes are bound together by cable clamps

and restrained to the wall with attaching clamp.

Fig.4.15

Pipe Insulation

(large)

Insulate pipe

connection

U-match Series Cassette Type Unit

Pipe insulation

Cover this portion with insulation.