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 0.2 inch.
• The unit must be horizontal or declined to the drain hose connected when finished installation.
Drain Pump
unuse
Drain Pump
use
•
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 in-
door unit is 1.25 inch.
• Be sure to install heat insulation on the drain piping.
Piping material: Polyvinyl chloride pipe inner
diometes Ø 0.98 inch 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 opera-
tion 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 thickness more than 0.3 inch.
Drain test
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