Heat Controller DMH18DB-1 Service Manual page 20

Flaring Work and Connection of Piping
4. Indoor unit installation
Hook the indoor unit onto the upper portion of the
installation 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 installation 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
portion.
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
housing section with vinyl tape.
3. Bundle the piping and drain hose together by wrap-
ping them with vinyl tape for enough to cover where
they fit into the rear piping housing section.
20 Multi type Air Conditioner
Torque
kgf . m(lbf-ft)
1.8~2.5(13)
3.4~4.2(30)
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)