INSTALLATION
ENGLISH
13
GRADIENT OF UNIT AND DRAIN PIPING
- Alway lay the drain with downward inclination(1/50 to 1/100).
Prevent any upward flow or reverse flow in any part.
- 5/24 inch(5 mm) or thicker formed thermal insulator shall always be provided for the drain pipe.
Drainage hole
U-Trap
B
C
A ≥ 2-9/16 inch
(70 mm)
B ≥ 2C
C ≥ 2 x SP
SP = External Pressure
(in.wc)
Ex) External Pressure
= 0.4 in.wc(10 mmAq)
A ≥ 2-9/16 inch(70 mm)
B ≥ 1-7/12 inch(40 mm)
C ≥ 19/24 inch(20 mm)
A
Make sure to be closed
Unit
Drainage pipe
(Field supply)
Thermal insulator
(Field supply)
Applied U-Trap Dimension
CORRECT
• Install the U-Trap to prevent
a water leakage caused by the blocking
of intake air filter.
Upflow Drain
INCORRECT
3/4 inch(19.05 mm)
connector
Air filter cover
Main drain along with suitable trap.
( Field supplied trap with sufficient
depth can be used. P-traps of
standard size are not sufficient. Refer
the figure for recommended
condensate trap.)
Supplementary drain
with proper trap. (field
supplied kit can be used)
The supplied flexible drain hose should not be strained.
A strained hose may cause leakage of water.
CAUTION
!
Summary of Contents for ANNQ60GKA4
Page 23: ......
