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Flaring work and connection of piping
For right rear piping
Route the indoor tubing and the drain hose in the direction of
rear right.
Insert the connecting cable into the indoor unit from the out-
door unit through the piping hole.
• Do not connect the cable to the indoor unit.
• Make a small loop with the cable for easy connection later.
Tape the tubing, drain hose, and the connecting cable. Be
sure that the drain hose is located at the lowest side of the
bundle. Locating at the upper side can cause drain pan to
overflow inside the unit.
NOTE: If the drain hose is routed inside the room, insulate
the hose with an insulation material* so that dripping from
"sweating"(condensation) will not damage furniture or floors.
*Foamed polyethylene or equivalent is recommended.
Indoor unit installation
• Hook the indoor unit onto the upper portion of the installa-
tion plate.(Engage the two hooks of the rear top of the
indoor unit with the upper edge of the installation plate.)
Ensure that the hooks are properly seated on the installa-
tion plate by moving it left and right.
Press the lower left and right sides of the unit against the
installation plate until the hooks engage into their slots(click-
ing sound).
Drain hose
Tape
Connecting
pipe
Drain hose
Connecting cable
Connecting
cable
Drain hose
Connecting the pipings to the indoor unit and
drain hose to drain pipe.
• Align the center of the pipes and sufficiently tighten
the flare nut by hand.
Indoor unit tubing
• Tighten the flare nut with a wrench.
Wrench
Indoor unit tubing
Outside diameter
mm
Ø6.35
Ø9.52
Ø12.7
Ø15.88
Ø19.05
• When extending the drain hose at the indoor unit, install the
drain pipe.
Drain pipe
Adhesive
Wrap the insulation material around the con-
necting 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 hous-
ing section with vinyl tape.
Connection
pipe
Vinyl tape
(wide)
Connecting cable
Vinyl tape(narrow)
Flare nut
Pipes
Open-end wrench (fixed)
Flare nut
Connection pipe
Torque
kg . m
inch
1/4
1.8
3/8
4.2
1/2
5.5
5/8
6.6
3/4
6.6
Indoor unit drain hose
Vinyl tape(narrow)
Indoor
unit pipe
Wrap with vinyl tape
Pipe
Service Manual 43
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