Installation Manual
13
Installation
ENGLISH
• 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 connec-
tion on the indoor unit is 32mm.
• Be sure to install heat insulation on the
drain piping.
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 operat-
ing 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.
Part name and functions
Upward
routing
not allowed
Pipe clamp
Maintenance
drain port
Indoor unit
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 in-
stallation.
Piping material: Polyvinyl chloride pipe VP-25
and pipe fittings
Heat insulation material: Polyethylene foam
with thickness more than 8 mm.
Drain test
Feed water
Drain Pump
Drain pan
Flexible drain hose
Main
drain pipe
Glue the joint
Drain
port
Drain hose connection
Use the clip