U-Match Series Duct Type Unit
22
Pipe Diameter(In) Tightening Torque(N·m)
1/4" 15-30
3/8" 35-40
1/2" 45-50
5/8" 60-65
7/8" 80-85
Screw on the flare nut of the flaring connecting pipe on the outdoor unit valve.
The method of screwing the flare nut is the same with that for indoor unit.
3.2.3.5 Thermal Insulation of Pipe Joint (Only for Indoor Unit)
Stick coupler heat insulation (large and small) to the place where connecting
pipes.
Gas pipe
Liquid pipe
Pipe
coupling
or
or
3-way valve 2-way valve
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
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