Mitsubishi Heavy Industries SRK25GZ-L1 Handbook page 711

18.2.8 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
FDT series
(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
(a) Ceiling recessed type (FDT)
Model FDT208-A
Noise level 38 dB (A) at HIGH
33 dB (A) at LOW
70
60
50
40
30
20
63 125 250 500
Mid octave band frequency (Hz)
Model FDT408-A
Noise level 48 dB (A) at HIGH
70
60
50
40
30
20
63 125 250 500 1000
Mid octave band frequency (Hz)
(b) Cassetteria type (FDR)
1) Silent panel
Model FDR208-A
Noise level 43 dB (A) at HIGH
70
60
50
40
30
20
63 125 250 500
Mid octave band frequency (Hz)
FDR series
Silent panel
Mike (center & low points)
Model FDT258-A
70 70
60 60
50 50
40 40
30 30
20 20
1000 2000 4000 8000 63
Model FDT508-A
40 dB (A) at LOW
70 70
60 60
50 50
40 40
30 30
20 20
2000 4000 8000 63
Model FDR258-A
37 dB (A) at LOW
70 70
60 60
50 50
40 40
30 30
20 20
1000 2000 4000 8000 63
Canvas panel
Unit Unit
Noise level 39 dB (A) at HIGH
35 dB (A) at LOW
70
60
50
40
30
20
125 250 500 1000 2000 4000 8000
Mid octave band frequency (Hz)
Noise level 49 dB (A) at HIGH
43 dB (A) at LOW
70
60
50
40
30
20
125 250 500 1000 2000 4000 8000
Mid octave band frequency (Hz)
Noise level 43 dB (A) at HIGH
37 dB (A) at LOW
70
60
50
40
30
20
125 250 500 1000 2000 4000 8000
Mid octave band frequency (Hz)
V MULTI
Outdoor unit
Only case of FDC508
Measured based on JIS B 8616
Mike position: at highest noise level
in position as below
Distance from front side 1 m
Height 1 m
Only case of FDC808, 1008
Mike position: front height is 1 meter.
Model FDT308-A
Noise level 41 dB (A) at HIGH
35 dB (A) at LOW
70
60
50
40
30
20
63 125 250 500 1000 2000 4000
Mid octave band frequency (Hz)
Model FDR308-A
Noise level 44 dB (A) at HIGH
38 dB (A) at LOW
70
60
50
40
30
20
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
709