Gree GUHD18ND3FO - Page 85

U-Match Series DC Inverter Service Manual
82
Sponge
Threaded fastener(×4)
Liquid pipe
Gas inlet pipe
Heat insulation sheath
(for the gas tube)
Heat insulation sheath
(for the liquid tube)
Figure 3-3-4
Table 3-3-1 Flare nut tightening torque
Pipe Diameter
Tightening Torque
6mm (1/4inch)
15~30N·m (11~22ft.-1b.)
9.5mm (3/8inch)
35~40N·m (26~29ft.-1b.)
12.7mm (1/2inch)
45~50N·m (33~37ft.-1b.)
16mm (5/8inch)
60~65N·m (44~48ft.-1b.)
Be sure to connect the gas pipe after connecting the liquid pipe completely.
3.1.4 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.
Gas pipe
Liquid pipe
Pipe
coupling
or
or
3-way valve 2-way valve
Figure 3-3-5