DC Inverter U-match Series Duct Type Unit
14
4.3.2 Bending Pipes
(1) The pipes are shaped by your hands. Be careful not to collapse them.
Fig. 4.11
(2) Do not bend the pipes in an angle more than 90°.
(3) When pipes are repeatedly bent or stretched, the material will harden,
making it difficult to bend or stretch them any more. Do not bend or stretch
the pipes more than three times.
(4) When bending the pipe, do not bend it as is.
The pipe will be collapsed. In this case, cut
the heat insulating pipe with a sharp cutter
as shown in Fig. 4.12, and bend it after
exposing the pipe. After bending the pipe as
you want, be sure to put the heat insulating
pipe back on the pipe, and secure it with
tape.
Pipe
Cutter
Cut line
Heat insulating
pipe
Fig. 4.12
①
To prevent breaking of the pipe, avoid sharp bends. Bend the pipe with a radius of curvature of
150mm (5-7/8inch) or over.
②
If the pipe is bent repeatedly at the same place, it will break.
4.3.3 Connecting the Pipe at the Indoor Unit Side
Detach the caps and plugs from the pipes.
①
Be sure to apply the pipe against 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
refrigerant
pipe is to be connected so as to prevent dust
and impurities from coming into the pipe system.
