DC Inverter U-match Series Duct Type Unit
15
Centering the pipe against port on the indoor unit turn the flare nut with your
hand.
Hold the torque wrench at its grip, keeping it in the right angle with the pipe as shown in Fig. 4.13, in
order to tighten the flare nut correctly.
When the flare nut is tightened properly by your hand, use a torque wrench to
finally tighten it.
Fig. 4.13
Fig. 4.14
Table 4.3 Flare nut tightening torque
Pipe Diameter
Tightening Torque
1/4"(Inch)
15-30 (N·m)
3/8" (Inch)
35-40 (N·m)
1/2" (Inch)
45-50 (N·m)
5/8" (Inch)
60-65 (N·m)
3/4" (Inch)
70-75 (N·m)
7/8" (Inch)
80-85 (N·m)
Be sure to connect the gas pipe after connecting the liquid pipe completely.
