509
High Wall Type
Indoor Unit
20.8 Sound pressure level
(1) Testing illustrate:
(2) Testing condition:
a. Unit running in the nominal condition
b. Test in the semi-anechoic chamber
c. Noise level varies from the actual factors such as room structure, etc.
1m
1m
AS072-162MGERA
Octave band sound pressure dB
Octave band center frequency
(
HZ
)
800040002000100050025012563
70
60
50
40
30
20
10
NC-60
NC-50
NC-40
NC-30
NC-20
Limit of audible 
continuous 
noise
M
H
L
10
20
30
40
50
60
70
63 1252 50 5001 0002 0004 0008 000
Octave band center frequency (Hz)
Octave band sound pressure dB
AS182/242MGERA
NC-60
NC-50
NC-40
NC-30
NC-20
Limit of audible 
continuous 
noise
L
H
M
AS072-162MGERA AS182/242MGERA