Installation Manual Ceiling Concealed Duct

9
ENGLISH
THE INDOOR UNIT INSTALLATION
CAUTION
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.
• Always lay the drain with downward
inclination (1/100 to 1/50).
Ex) If the width of product is 100 inch, the
gap of height is 1~2 inch.
Prevent any upward flow or reverse flow
in any part.
• 10mm 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
U-Trap
B
C
A → 70 mm(2.8 inch)
B → 2C
C → 2 x SP
SP = External Pressure
(mmAq / inAq)
Ex) External Pressure =
10 mmAq(0.4 inAq)
A → 70 mm(2.8 inch)
B → 40 mm(1.6 inch)
C → 20 mm(0.8 inch)
A
Applied U-Trap Dimension