Cassette Type Air Conditioner Unit
17
Gas pipe
Liquid pipe
Pipe
coupling
or
or
3-way valve
2-way valve
Fig. 4.14
4.3.5 Checking the Pipe Connections for Gas Leaking
For both indoor and outdoor unit side, check the joints for gas leaking by the use of
a gas leakage detector without fail when the pipes are connected.
4.3.6 Heat Insulation on the Pipe Joints (Indoor Side Only)
Stick coupler heat insulation (large and small) to the place where connecting pipes.
Front outlet
Coupler heat
insulation (small)
on the pipe
Liquid pipe
Gas pipe
Reference A
Coupler heat insulation
(large) on the pipe
Heat insulation pipe
Reference A:
Cover this portion with heat
insulating material also without fail
No gap
Fig. 4.15
4.3.7 Liquid Pipe and Drain Pipe
(1). If the outdoor unit is installed lower than the indoor unit (See Fig. 4.16)
1). A drain pipe should be above ground and the end of the pipe does not dip into
water. All pipes must be restrained to the wall by saddles.
2). Taping pipes must be done from bottom to top.
3). All pipes are bound together by tape and restrained to wall by saddles.
