Mitsubishi Electric MFZ-KA-VA Technical Data Book page 97

SEZ-KC25VA
70
60
50
40
30
20
10
Appro
Approximate minimum
audible limit on continuous noise
0
63 125 250
OCTAVE BAND CENTER FREQUENCIES (Hz)
Aux.duct
1m
Measurement location
NOTE: The sound level is measured in an anechoic room where echoes are few, when compressor stops. The sound
may be bigger than the indicated level in actual use due to surrounding echoes. The sound level can be higher
by about 2 dB than the indicated level during cooling and heating operation.
<50Hz>
NOTCH
High
Low
High speed
Low speed
500 1000 2000 4000
2m
SPL(dB)
36
25
NC60
NC50
NC40
NC30
NC20
8000
97