Step 6: Piping Connection - Indoor Unit
A: Connecting the indoor unit tubing to the
connection piping:
Indoor unit tubing
Spanner
wrench
Torque
Indoor unit
tubing
torque wrench by referring the following:
Outer diam.
Torque
(mm)
(N.m)
caution
Excessive torque can break the nut depending
on installation conditions.
Flare nut
Pipings
Torque
wrench
Flare nut
Pipings
Additional
Torque (N.m)
19.6 (2.0kg.m)
78.6 (8.0kg.m)
B: Wrap the insulation material around the
connecting portion:
Cover the indoor unit pipe and the connection
pipe with the heat insulation material. Bind
them together with vinyl tape so that there is
no gap.
Cable ties
Ensure to Isolate separately the suction pipe
from the liquid pipe.
Heat insulation
Suction line
pipe
Wrap the insulated pipes with vinyl tape in the
rear section for pipe housing. Fasten the power
cable to the pipes with vinyl tape.
Connection pipe
Vinyl tape
(wide)
Connection
cable
Wrap the piping, drain hose and power
cable tightly with vinyl tape so that they can
Insulation
material
Liquid line
pipe
Indoor Unit
pipe
Wrap with vinyl tape
Pipe
Vinyl tape
(narrow)