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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 5mm.
• The unit must be horizontal or declined to the drain hose connected when finished installation.
CORRECT
Drainage hole
CAUTION FOR GRADIENT OF
UNIT AND DRAIN PIPING
• Alway lay the drain with downward inclina-
tion (1/50 to 1/100).
Prevent any upward flow or reverse flow in
any part.
• 5mm or thicker formed thermal insulator
shall always be provided for the drain pipe.
CORRECT
CAUTION
Front of view
Ceiling
INCORRECT
Lay the drain hose with a downward inclination
so water will drain out.
Unit
Make sure to be closed.
INCORRECT
–21–
Drainage hole
Thermal insulator
(Local supply)
Drainage pipe
(Local supply)
Drainage hole
• Upward routing not
allowed
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