Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 615

15.2.8 Noise level
Notes (1) The data are based on the following conditions.
Ambient air temperature:
Indoor unit 27°C DB, 19°C WB
Outdoor unit 35°C DB,
Indoor unit
Measured based on JIS B 8616
Mike position as below
(2) The data in the chart are measured in an unechonic room.
(3) The noise levels measured in the field are usually higher than the data because of reflection.
(1) Indoor unit
Model FDU308-A (50Hz)
Noise level 41dB (A)
70
60
50
40
30
20
63 125 250 500 1000 2000
Mid octave band frequency (Hz)
Model FDU408-A (60Hz)
Noise level 46dB (A)
70
60
50
40
30
20
63 125 250 500 1000 2000
Mid octave band frequency (Hz)
Model FDU808-A
Noise level 48dB (A)
70
60
50
40
30
20
63 125 250 500 1000 2000
Mid octave band frequency (Hz)
Unit
1.5 m
Model FDU308-A (60Hz)
Noise level 43dB (A)
70 70
60 60
50 50
40 40
30 30
20 20
4000 8000 63 125 250 500
Mid octave band frequency (Hz)
Model FDU508-A (50Hz)
Noise level 45dB (A)
70 70
60 60
50 50
40 40
30 30
20 20
4000 8000 63 125 250
Mid octave band frequency (Hz)
Model FDU1008-A
Noise level 49dB (A)
70 70
60 60
50 50
40 40
30 30
20 20
4000 8000 63 125 250
Mid octave band frequency (Hz)
Outdoor unit
Only case of FDC 308~508 and FDC 306~506 type.
Measured based on JIS B 8616
Mike position: at highest noise level
in position as below
Distance from front side
Height
Only case of FDC 808, 1008 type.
Mike position: Front height is 1 meter.
Model FDU408-A (50Hz)
70 70
60 60
50 50
40 40
30 30
20 20
1000 2000 4000 8000
70 70
60 60
50 50
40 40
30 30
20 20
500 1000 2000 4000 8000
70
60
50
40
30
20
500 1000 2000 4000 8000
FDU-H
1 m
1 m
Noise level 44dB (A)
63 125 250 500 1000 2000 4000
Mid octave band frequency (Hz)
Model FDU508-A (60Hz)
Noise level 47dB (A)
63 125 250 500 1000 2000 4000
Mid octave band frequency (Hz)
70
60
50
40
30
20
8000
70
60
50
40
30
20
8000
613