Connecting The Piping - Heat Controller DMH18DB-1 Service Manual

Check
1. Compare the flared work with the figure.
2. If a flared section is defective, cut it off and do flaring
work again.

Connecting the Piping

Indoor
1. Prepare the indoor unit's piping and drain hose for installation through the wall.
2. Remove the plastic tubing retainer(see the illustra-
tion) and pull the tubing and drain hose away from
chassis.
3. Replace the plastic holder in original position.
For right rear piping
1. Route the indoor tubing and the drain hose in the
direction of rear right.
2. Insert the connecting cable into the indoor unit from the
outdoor unit through the piping hole.
• Do not connect the cable to the indoor unit.
• Make a small loop with the cable for easy connec-
tion later.
3. 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 uper side
can cause drain pan to overflow inside the unit.
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.
Flaring Work and Connection of Piping
Smooth all round
Inside is shiny without scratches
= Improper flaring =
Inclined Surface
damaged
Even length
all round
Connecting
pipe
Drain hose
Cracked Uneven
thickness
Drain hose
Tape
Connecting cable
Service Manual 19