Mitsubishi Heavy Industries V Multi FDC71VNX Technical Manual page 28

1.4 NOISE LEVEL
Notes(1) The data are based on the following conditions.
Ambient air temperature: Indoor unit 27℃WB. Outdoor unit 35℃DB.
(2) The data in the chart are measured in an anechoic room.
(3) The noise levels measured in the field are usually higher than the data because of reflection.
(1) Indoor units
(a) Sound power level
Model FDT40VH
Noise level Cooling : 50 dB (A)
Heating : 50 dB (A)
Cooling
80
70
60
50
40
30
63 125 250 500 1000
Mid Octave Band Frequency (Hz)
(b) Sound pressure level
Model FDT40VH
Noise level 36 dB(A) at P-Hi
33 dB(A) at Hi
30 dB(A) at Me
26 dB(A) at Lo
Cooling
60
50
40
30
20
10
63 125 250 500 1000
Mid octave band frequency (Hz)
Model FDT50VH
Noise level 41 dB(A) at P-Hi
33 dB(A) at Hi
30 dB(A) at Me
26 dB(A) at Lo
Cooling
60
50
40
30
20
10
63 125 250 500 1000
Mid octave band frequency (Hz)
Model FDT60VH
Noise level 44 dB(A) at P-Hi
34 dB(A) at Hi
30 dB(A) at Me
27 dB(A) at Lo
Cooling
60
50
40
30
20
Model FDT50VH
Noise level Cooling : 55 dB (A)
Heating
80 80
70 70
60 60
50 50
40 40
30 30
2000 4000 8000 63
Mid Octave Band Frequency (Hz)
Noise level 36 dB(A) at P-Hi
Heating
60 60
50 50
40 40
30 30
20 20
10 10
2000 4000 8000 63
Mid octave band frequency (Hz)
Noise level 42 dB(A) at P-Hi
Heating
60 60
50 50
40 40
30 30
20 20
10 10
2000 4000 8000 63
Mid octave band frequency (Hz)
Noise level 44 dB(A) at P-Hi
Heating
60 60
50 50
40 40
30 30
20 20
Measured based on JIS B 8616
Mike position
Heating : 56 dB (A)
Cooling Heating
125 250 500 1000 2000 4000 8000
33 dB(A) at Hi
28 dB(A) at Me
20 dB(A) at Lo
125 250 500 1000 2000 4000 8000
33 dB(A) at Hi
28 dB(A) at Me
20 dB(A) at Lo
125 250 500 1000 2000 4000 8000
34 dB(A) at Hi
30 dB(A) at Me
23 dB(A) at Lo
27
- -
'19 • PAC-T-327
Uni
t
1.5m
Mike (in front & below unit)
Model FDT60VH
Noise level Cooling : 58 dB (A)
Heating : 59 dB (A)
Cooling
80 80
70 70
60 60
50 50
40 40
30 30
63 125 250 500
Mid Octave Band Frequency (Hz)
60
50
40
30
20
10
60
50
40
30
20
10
60
50
40
30
20
Heating
80
70
60
50
40
30
1000 2000 4000
8000