Nortek GFU18USV4DH - Page 17

DC Inverter U-match Series Floor Ceiling Type Unit
14
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Fig. 4.11
Fig. 4.12
Table 4.3 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.
4.3.4 Connecting the Pipe to the Outdoor Unit
Tighten the flare nut of the connection pipe at
the outdoor unit valve connector. The tightening
method i
s the same as that as at the indoor
unit.
Fig. 4.13