Sound Pressure Level - Haier MVAH018MV2AA Service Manual

8. Sound pressure level

(1) Testing illustrate:
Air outlet duct
Outlet side
(2) Testing condition:
a. Unit running in the standard condition
b. Test in the semi-anechoic chamber
c. Noise level varies from the actual factors such as room structure, etc.
Unit
Testing position just below the central of the unit
MVAH018MV2AA
70
NC-60
60
NC-50
50
NC-40
40
NC-30
30
H
NC-20
M
20
Limit of
audible
continuous
L
noise
10
63 125 250 500 1000 2000 4000 8000
Octave band center frequency (HZ)
MVAH030MV2AA
70
NC-60
60
NC-50
50
NC-40
40
NC-30
30
H
NC-20
M
20
Limit of
audible
L
continuous
noise
10
63 125 250 500 1000 2000 4000 8000
Octave band center frequency (HZ)
MVAH042MV2AA
70
NC-60
60
NC-50
50
NC-40
40
NC-30
H
30
M
NC-20
L
20
Limit of
audible
continuous
noise
10
63 63 63 63 63 63 63 63 125 250 500 1000 2000 4000 8000
Octave band center frequency (HZ)
Air return duct
Sound level meter
MVAH024MV2AA
70
NC-60
60
NC-50
50
NC-40
40
NC-30
30
NC-20
20
Limit of
audible
continuous
noise
10
63 125 250 500 1000 2000
Octave band center frequency (HZ)
MVAH036MV2AA
70
NC-60
60
NC-50
50
NC-40
40
NC-30
30
NC-20
20
Limit of
audible
continuous
noise
10
63 63 63 63 63 63 63 63 125 250 500 1000 2000 4000
Octave band center frequency (HZ)
MVAH048MV2AA
70
NC-60
60
NC-50
50
NC-40
40
NC-30
30
NC-20
20
Limit of
audible
continuous
noise
10
63 63 63 63 63 63 63 63 125 250 500 1000 2000 4000
Octave band center frequency (HZ)
14
Air
H
M
L
4000 8000
H
M
L
8000
H
M
L
8000