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18 Room Air Conditioner
Installation
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.
Route the indoor tubing and the drain hose to
the required piping hole position.
Plastic bands
Insulation material
Connection pipe
Flare nut
Indoor unit tubing
Torque wrench
Spanner (fixed)
Vinyl tape(narrow)
Adhesive
Drain pipe
Indoor unit drain hose
• When extending the drain hose at the indoor unit,
install the drain pipe.
• Tighten the flare nut with a wrench.
• Wrap the area which accommodates the rear
piping housing section with vinyl tape.
For right rear piping
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 Flare nut Pipings
Drain hose
Ø6.35 1/4 1.8
Ø9.52 3/8 4.2
Ø12.7 1/2 5.5
Ø15.88 5/8 6.6
Outside diameter
mm inch
Torque
Vinyl tape(narrow)
Connection
pipe
Connecting cable
Vinyl tape
(wide)
Wrap with vinyl tape
Indoor
unit pipe
Pipe
• 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
Drain hose
Pipe
Vinyl tape(wide)