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Installation Manual 27
Installation
ENGLISH
CAUTION : The supplied
flexible drain hose should not
be curved, neither screwed.
The curved or screwed hose
may cause a leakage of water.
[Ceiling Concealed Duct/Ceiling Cassette Type]
• 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 32mm(1 1/4 inch).
•
Be sure to install heat insulation on the drain piping.
Piping material: Polyvinyl chloride pipe inner
diometes Ø 25mm(1 inch) and pipe fittings
• 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.
• Be sure to check the drain pump for normal
operating and noise when electrical wiring is
complete.
• When the test is complete, connect the flexible
drain hose to the drain port on the indoor unit.
The air conditioner uses a drain pump to drain water.
Use the following procedure to test the drain pump operation:
Heat insulation material: Polyethylene foam
with thickness more than 8mm(5/16 inch).
Drain test
Maintenance
drain port
Upward
routing
not allowed
Pipe clamp
Indoor unit
1/50~1/100
Flexible drain hose
MAX : 700 mm(27 9/16 inch)
Feed water
Drain Pump
Drain pan
Flexible drain hose
(accessory)
Main
drain pipe
Glue the joint
Drain
port
Drain hose connection
Use the clip (accessory)
Flexible drain hose
1/50~1/100
Flexible drain hoseFlexible drain hoseFlexible drain hose
h The figure can be changed according to model.
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