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DC Inverter U-match Series Duct Type Unit
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3.2.3.4 Connection Pipe of Indoor and Outdoor Units
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.