Concealed Duct Installation Manual

10
INSTALLATION
ENGLISH
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 5 mm(3/16 inch).
• Always lay the drain with downward
inclination (1/100 to 1/50).
Prevent any upward flow or reverse flow
in any part.
• 10 mm or thicker formed thermal
insulator
shall always be provided for the drain
pipe.
• Install the P-Trap (or U-Trap) to prevent
a water leakage caused by the blocking
of intake air filter.
• Upward routing not allowed
Lay the drain hose with a downward inclination so water will drain out.
• The unit must be declined to the drain hose connected when finished installation.
Front of view
CAUTION FOR GRADIENT OF UNIT AND DRAIN PIPING
Ceiling
1/100~1/50
Drainage hole
Drainage hole
CORRECT
INCORRECT
Drainage holeMake sure to be closed.
Unit
Drainage pipe
(Local supply)
Thermal insulator
(Local supply)
CORRECT
INCORRECT
Applied U-Trap Dimension
CAUTION
!
U-Trap
B
C
A ≥ 70 mm(2-3/4 inch)
B ≥ 2C
C ≥ 2 x SP
SP = External Pressure
(mmAq(inAq))
Ex) External Pressure
= 10 mmAq (0.39 inAq)
A ≥ 70 mm(2-3/4 inch)
40 mm(1-9/16 inch)
20 mm(25/32 inch)
B ≥
C ≥
A