Sound Level - Haier N Series Service Manual

13 Sound level

Model
cooling
106 212
53 425
80
70
60
50
40
30
20
approximate
threshold
hearing for
continuous
noise
63
125 500
250
Octave band center frequency(Hz)
Sound presure level
230V,50Hz
Cooling/heating
L
H
/
51
850 1700 3400 6800
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000
2000 8000
1000
Measuring location
Location of microphone
SL
/
106
53
80
70
60
50
40
30
20
approximate
threshold
hearing for
continuous
noise
63
78
Sound level
sound power level
(cooling/heating)
61
heating
212 850 1700
425 3400
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
125 500 2000
250 1000
Octave band center frequency(Hz)
Domestic air conditioner
6800
4000 8000