Gree U-match Série Manuel De L'utilisateur page 29

3.2.3.4 Connection Pipe of Indoor and Outdoor Units
①.
Connect the pipe to the unit. Please follow the instructions stated in the figures
below. Use both spanner and torque wrench.
②.
When connecting the tapered screw nut, first apply chilled machine oil on its
inner and outer surface and then screw it up for 3~4 circles.
③.
Confirm the tightening torque by referring to the following table (If the screw
nut is over-twisted, it may be damaged and cause leakage).
④.
Check whether gas leakage occurs to the connection pipe and then apply
thermal insulation, as shown below.
⑤.
Wind sponge around the joint of gas pipe and heat insulation sheath of gas
collecting pipe.
⑥.
Be sure to connect gas pipe after liquid pipe is connected.
Screw on the flare nut of the flaring connecting pipe on the outdoor unit valve.
Threaded fastener(×4)
Gas inlet pipe
Liquid pipe
Pipe diameter (in.)
1/4
3/8
1/2
5/8
3/4
7/8
DC Inverter U-match Series Cassette Type Unit
NOTICE
Sponge
Heat insulation sheath
(for the liquid tube)
Heat insulation sheath
(for the gas tube)
Tightening torque (N· m)
15-30
35-40
45-50
60-65
70-75
80-85
25