LG ATNH24GPLE2 User Manual page 97

SINGLE ZONE
4. Installation of outdoor unit
4.9 Outdoor unit cabin
4.9.1 Outdoor Cabin louver requirement
1. Outdoor cabin type : Manual door open type
2. Louver angle : less than 15° on the horizontal base
3. Louver interval: over 100(3-15/16) mm(inch) (recommend)
4. Louver shape : wing type or plane type
CAUTION
• Opening rate and suction should be considered for lou-
vered outdoor room.
• Do not use 'S' type louver.
NOTE
The problem in case the louver opening rate is small.
1. Noise can occur due to the increased velocity of the air passing through louver blade.
2. Noise can occur due to the louver blade vibrations.
3. Drop in outdoor fan performance (Excess static pressure damage can cause drop in the performance as well as outdoor
heat exchange efficiency).
4. In case the louver opening rate is small or there is insufficient air flow exchange, it might stop the air conditioner.
Opening rate by louver radian
ho
15
ho = h * COS
Total face area(A) = H * W
Number of open space (N) = (number of louver - 1)
Effective face area(Af) = ho * W * N
Louver opening rate (n)
Af = A * n
Effective face area of cross section
Noise can occur due to the
backward flow of the air
passing through the louver
blade
h
= Af/A
Max15
(Recommended)
Over 100(3-15/16) mm(inch)
(Recommended)
Louver
Section
Outside
W
[Side view] [Front view]
Heat pump 60Hz/R410A
Inside
H
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