LG ANNQ60GKA4 Installation Manual page 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.
Unit
Make sure to be closed
INCORRECT
Upflow Drain
CAUTION
!
The supplied flexible drain hose should not be strained.
A strained hose may cause leakage of water.
Thermal insulator
(Field supply)
Drainage pipe
Applied U-Trap Dimension
(Field supply)
A ≥ 2-9/16 inch
(70 mm)
B ≥ 2C
C ≥ 2 x SP
SP = External Pressure
Drainage hole
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)
CORRECT
• Install the U-Trap to prevent
a water leakage caused by the blocking
of intake air filter.
Air filter cover
Supplementary drain
with proper trap. (field
supplied kit can be used)
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.)
C
(in.wc)
A
INSTALLATION
13
3/4 inch(19.05 mm)
connector
B
U-Trap