Heat Controller DMH18DB-1 Service Manual page 21

For left rear piping
1. Route the indoor tubing and the drain hose to the
required piping hole position.
2. Insert the piping, drain hose, and the connecting
cable into the piping hole.
3. Insert the connecting cable into the indoor unit.
• Don't connect the cable to the indoor unit.
• Make a small loop with the cable for easy connec-
tion later.
4. Tape the drain hose and the connecting cables.
5. Indoor unit installation
• Hang the indoor unit from the hooks at the top of the
installation plate.
• Insert the spacer etc. between the indoor unit and
the installation plate and separate the bottom of the
indoor unit from the wall.
Connecting the piping to the indoor unit and the
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.
Torque
kgf . m(lbf-ft)
1.8~2.5(13)
3.4~4.2(30)
Flaring Work and Connection of Piping
1
Indoor unit
Installation plate
8cm
Indoor unit tubing Flare nut
Open-end wrench (fixed)
Wrench
Indoor unit tubing
Drain hose
Indoor unit drain hose
Vinyl tape
Adhesive
Service Manual 21
2
Connecting
cable
Drain pipe
Spacer
Pipes
Flare nut
Connection pipe
(narrow)