Table of Contents
Advertisement
Connecting the Pipe at the Indoor Unit
Detach the caps and plugs from the pipes.
1. Be sure to connect the pipe to the port on the indoor unit correctly. If the centering is
improper, the flare nut cannot be tightened smoothly. If the flare nut is forced to turn, the
threads will be damaged.
2. Do not remove the flare nut until the connection pipe is to be connected so as to prevent dust
and impurities from coming into the pipe system.
1. When connecting the pipe to the unit or removing it from the unit, please use both the spanner
and the torque wrench. See illustration below.
2. When connecting, smear both inside and outside of the flare nut with refrigeration oil, tighten it
by hand and then tighten it with the spanner.
3. Refer to the table below before tightening to determine the appropriate torque (too tight would
damage the nut and lead to leakage).
4. Examine the connection pipe to see if it leaks, then apply the thermal insulation for the liquid
and gas lines, as shown below.
5. Use the medium-sized sponge wrap to insulate the coupler of the gas pipe and secure with
tape.
NOTICE
Thickness of
Pipe Diameter
Copper Tube
Φ6.35 (.25)
≥0.8 (0.031)
Φ9.52 (.37)
≥0.8 (0.031)
Φ12.7 (.50)
≥0.8 (0.031)
Φ15.9 (.63)
≥1.0 (0.039)
17
Ceiling Concealed Unit
Back-up Wrench
mm(in)
Tightening
Torque
15 ~ 30 N•m
35 ~ 40 N•m
45 ~ 50 N•m
60 ~ 65 N•m
Advertisement
Table of Contents
