DC Inverter U-match Series Cassette Type Unit
14
Table 9 Flare nut tightening torque
Pipe Diameter
Tightening Torque
1/4
˝(
Inch)
15-30 (N·m)
3/8
˝(
Inch)
35-40 (N·m)
5/8
˝(
Inch)
60-65 (N·m)
1/2
˝(
Inch)
45-50 (N·m)
3/4
˝(
Inch)
70-75 (N·m)
7/8
˝(
Inch)
80-85 (N·m)
CAUTION!
Be sure to connect the gas pipe after connecting the liquid pipe completely.
Fig.16
4.3.4 Connecting the Pipe at the Outdoor Side Unit
Tighten the flare nut of the connection pipe at the outdoor unit valve
connector. The tightening method is the same as that as at the indoor
side.
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 o
f 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.
Fig.17
