Table of Contents
FDU-C
16.2.8 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
Mid octave band frequency (Hz)
Model FDU408-A (50Hz)
Noise level 44dB (A)
70
60
50
40
30
20
63
125
250
500
Mid octave band frequency (Hz)
Model FDU508-A (50Hz)
Noise level 45dB (A)
70
60
50
40
30
20
63
125
250
500
Mid octave band frequency (Hz)
648
Unit
1.5m
70
60
50
40
30
20
1000
2000
4000
8000
70
60
50
40
30
20
1000
2000
4000
8000
70
60
50
40
30
20
1000
2000
4000
8000
Outdoor unit
Measured based on JIS B 8616
Mike position: at highest noise level
in position as below
Distance from front side
Height
Model FDU308-A (60Hz)
Noise level 43dB (A)
70
60
50
40
30
20
63
125
250
500
1000
Mid octave band frequency (Hz)
Model FDU408-A (60Hz)
Noise level 46dB (A)
70
60
50
40
30
20
63
125
250
500
1000
Mid octave band frequency (Hz)
Model FDU508-A (60Hz)
Noise level 47dB (A)
70
60
50
40
30
20
63
125
250
500
1000
Mid octave band frequency (Hz)
1 m
1 m
70
60
50
40
30
20
2000
4000
8000
70
60
50
40
30
20
2000
4000
8000
70
60
50
40
30
20
2000
4000
8000
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