Install Instructions

Heat pump 60Hz/R410A _ 61
4. Installation of outdoor unit
Installation of
Outdoor Units
SINGLE ZONE
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
Section
Max15
(Recommended)
Over 100(3-15/16) mm(inch)
(Recommended)
Louver
Inside
Outside
Noise can occur due to the
backward flow of the air
passing through the louver
blade
[Side view]
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
Af = A * n
Effective face area of cross section
ho
h
W
[Front view]
H
15
Opening rate by louver radian
• Opening rate and suction should be considered for lou-
vered outdoor room.
• Do not use 'S' type louver.
CAUTION
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.
NOTE