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Indoor Unit Drain Piping
(TYPE B / C )
Pipe clamp
Indoor unit
Maintenance
drain port
- Drain piping must have down-slope (1/50 to
1/100): be sure not to provide up-and-down
slope to prevent reversal flow.
- During drain piping connection, be careful
not to exert extra force on the drain port on
the indoor unit.
- The outside diameter of the drain connection
on the indoor unit is 32 mm(1-1/4 inch).
Piping material: Polyvinyl chloride pipe VP-25
and pipe fittings
- Be sure to execute heat insulation on the
drain piping.
- Install the drain raising pipes at a right
angle to the indoor unit and no more than
300 mm(11-13/16 inch) from the unit.
Heat insulation material: Polyethylene foam
with thickness more than 8 mm(5/16 inch).
Drain test
(TYPE B / C )
Feed water
Drain Pump
Drain pan
Upward
routing
not allowed
Flexible drain hose
(accessory)
Main
drain pipe
Drain
port
Glue the joint
Drain hose connection
Use the clip (accessory)
- Connect the main drain pipe to the exterior
and leave it provisionally until the test comes
to an end.
- Feed water to the flexible drain hose and
check the piping for leakage.
- When the test is complete, connect the
flexible drain hose to the drain port on the
indoor unit.
1 Remove the Air Filter.
2 Check the drainage.
- Spray one or two glasses of water upon
the evaporator.
- Ensure that water flows drain hose of
indoor unit without any leakage.
INSTALLATION
19
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