Installation Manual
11
Installation
ENGLISH
CAUTION
Ceiling
Drain Pump use
Drainage hole
Front of view
1.
Install declination
of the indoor unit is very
important for the drain
of the duct type air conditioner.
2. Minimum thickness of the insulation for the connecting pipe shall be 19mm.
• The unit must be horizontal or declined to the drain hose connected when finished
installation.
• 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.
• Be sure to install heat insulation on the drain piping.
Piping material: Polyvinyl chloride pipe VP-25 and
pipe fittings
The air conditioner uses a drain pump to drain water.
Use the following procedure to test the drain pump operation:
• 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.
Heat insulation material: Polyethylene foam with thick-
ness more than 8 mm.
Drain test
Upward
routing
not allowed
Pipe clamp
Maintenance
drain port
Indoor unit
Drain Piping
Feed water
Drain Pump
Drain pan
Flexible drain hose
Main
drain pipe
Glue the joint
Drain
port
Drain hose connection
Use the clip
