Multi VRF Indoor
Unit Service Manual
69
After manually screwing down the nuts, hold the pipe junction on the side of the unit with the spanner, and
then tighten it with torque spanner.
Indoor unit side pipe
Handgrip spanner
Torque spanner
(3) Connect the wires of the expansion valve
①.
Fix the wire on the pipes with tie line(small)to avoid looseness and sag.
②.
Prevent the wire from contacting with high-heat or moist objects during connection.
To Indoor Unit
To Outdoor Unit
UP
Main board connecting indoor unit
Fix it with tie line
(4) Last operation
Warning: Ensure the pipes are covered by the sponge completely from air; otherwise, condensate on
the pipes will be caused by improper heat insulation.
Connecting pipe part must be wrapped with heat-insulating materials.
To Indoor Unit
To Outdoor Unit
UP
Heat-insulating sponge
Indoor Unit
Indoor unit.
H
H/2
Install water trap as shown below;
Install one water trap for each unit.
Installation of water trap shall consider easy cleaning in the future.
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