DC Inverter U-Match Series Cassette Type Unit
23
(2) Do not bend the pipes in an angle more than 90°.
(3) If the pipe is repeatedly bent or extended, it will become hard and difficult
to be bent or extended. So do not bend or extend the pipe for more than 3
times.
(4) When bending the pipe, do not bend it
excessively, otherwise it will get broken. As
shown beside, use a sharp cutter to cut the
heat insulating pipe and bend it after the
pipe is exposed. After bending, place the
heat insulating pipe back on the pipeline
and fix it with adhesive tape.
Pipe
Cutter
Cut line
Heat insulating
pipe
3.2.3.4 Connecting the Pipe at the Indoor Unit Side
NOTICE
(1) Connect the pipe to the unit. Please follow the instructions stated in the figures
below. Use both spanner and torque wrench.
(2) When connecting the tapered screw nut, first apply chilled machine oil on its
inner and outer surface and then screw it up for 3~4 circles.
(3) Confirm the tightening torque by referring to the following table (If the screw nut
is over-twisted, it may be damaged and cause leakage).
(4) Check whether gas leakage occurs to the connection pipe and then apply
thermal insulation, as shown below.
(5) Wind sponge around the joint of gas pipe and heat insulation sheath of gas
collecting pipe.
(6) Be sure to connect gas pipe after liquid pipe is connected.
Sponge
Threaded fastener(×4)
Liquid pipe
Gas inlet pipe
Heat insulation sheath
(for the gas tube)
Heat insulation sheath
(for the liquid tube)
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