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3.4
Piping Connection
3.4.1
Indoor Unit
1.
Connecting the indoor unit tubing to
the connection piping:
• Align the centers of the pipes and
sufficiently tighten the flare nut with
your hands first.
Fig.3.4.1-1
Fig.3.4.1-2
•
Then tighten the flare nut with
spanner and torque wrench by
referring the following table:
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2.
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.
Spanner (fixed)
Flare nut
Pipings
Wrench Torque
Indoor unit tubing
Fig.3.4.1-3
• Ensure to isolate separately the
suction pipe from the liquid pipe.
Fig.3.4.1-4
• Wrap the insulated pipes with vinyl
tape in the rear section for pipe
housing. Fasten the power cable
to the pipes with vinyl tape.
Fig.3.4.1-5
Fig.3.4.1-6
• Wrap the piping, drain hose and
power cable tightly with vinyl tape so
that they can fit into the rear piping
housing section.
Fig.3.4.1-7
Cable Ties
Insulation
Material
Heat Insulation
Suction line pipe Liquid line pipe
Connection pipe
Vinyl tape (wide) Wrap with vinyl tape
Indoor
Unit pipe
Pipe
Vinyl tape
(narrow)
Connection
cable
Pipe
Vinyl tape
(narrow)
Drain hose
Connection
power cable
Wrap with
vinyl tape
(wide)
Indoor unit tubing
Torque wrench
Spanner
Flare nut Pipes
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