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Installation
Connecting the pipings to the indoor unit
and drain hose to drain pipe.
• Put a couple drops of refrigerant oil on the face of
the flare before assembling taking care not to
add any contaminants.
• Align the center of the pipings and sufficiently
tighten the flare nut by hand.
Indoor unit tubing
• Tighten the flare nut with a wrench.
Connection pipe
Flare nut
Spanner (fixed)
Outside diameter
mm
Ø6.35
Ø9.52
Ø12.7
Ø15.88
• When extending the drain hose at the indoor unit,
install the drain pipe.
Drain pipe
Adhesive
18 Room Air Conditioner
Flare nut
Pipings
Indoor unit tubing
Torque wrench
Torque
kgf·m
inch
1/4
1.8~2.5
3/8
3.4~4.2
1/2
5.5~6.6
5/8
6.3~8.2
Indoor unit drain hose
Vinyl tape(narrow)
Wrap the insulation material around the
connecting portion.
• Overlap the connection pipe insulation material
and the indoor unit pipe insulation material. Bind
them together with vinyl tape so that there is no
gap.
Plastic bands Insulation material
• Wrap the area which accommodates the rear
piping housing section with vinyl tape.
Connection
pipe
Vinyl tape
(wide)
Connecting cable
Vinyl tape(narrow)
• Bundle the piping and drain hose together by
wrapping them with vinyl tape over the range
within which they fit into the rear piping housing
section.
Wrap with vinyl tape
Pipe
Drain hose
For right rear piping
Route the indoor tubing and the drain hose to
the required piping hole position.
Indoor
unit pipe
Wrap with vinyl tape
Pipe
Vinyl tape(wide)
Drain hose
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