Heat Controller B-MMC09FA-1 Service Manual page 25

4. 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(clicking sound).
Connecting the piping to the indoor unit and drain hose
to drain pipe.
1. Align the center of the pipes and sufficiently tighten the
flare nut by hand.
2. Tighten the flare nut with a wrench.
Outside diameter
mm inch
Ø6.35 1/4
Ø9.52 3/8
3. When extending the drain hose at the indoor unit, install
the drain pipe.
Wrap the insulation material around the connecting por-
tion.
1. Overlap the connection pipe insulation material and the
indoor unit pipe insulation material. Bind them together
with vinyl tape so that there may be no gap.
2. Wrap the area which accommodates the rear piping hous-
ing section with vinyl tape.
3. Bundle the piping and drain hose together by wrapping
them with vinyl tape for enough to cover where they fit into
the rear piping housing section.
Torque
kg . m
lbf.in
1.8 156.2
4.2 364.5
Flaring Work and Connection of Piping
Indoor unit tubing Flare nut
Wrench
Indoor unit tubing
Drain pipe
Adhesive
Plastic bands Insulation material
Connection pipe
Vinyl tape (wide) Wrap with vinyl tape
Connecting cable
Vinyl tape(narrow)
Wrap with vinyl tape
Pipe
Drain hose
Connecting
cable
Drain hose
Pipes
Open-end wrench (fixed)
Flare nut
Connection pipe
Indoor unit drain hose
Vinyl tape(narrow)
Indoor unit pipe
Pipe
Vinyl tape(wide)
Service Manual 25