-
76
-
'18 • SCM-T-251
Noise
Level
Cooling 42 dB(A)
Heating 47 dB(A)
×
......
Cooling,
Heating
Condition ISO5151-T1, JIS C 9612
10
20
30
40
50
60
10
20
30
40
50
60
70
Sound pressure level (dB)
(Standard 2×10
-5
Pa)
63 125 250 500 1000 2000 4000 8000
Mid octave band frequency (Hz)
N20
Noise
Level
Cooling 38 dB(A)
Heating 39 dB(A)
×
......
Cooling,
Heating
Condition ISO-T1, JIS C 9612
10
20
30
40
50
60
70
Sound pressure level (dB)
(Standard 2×10
-5
Pa)
63 125 250 50010002000400
000
Mid octave band frequency (Hz)
N20
(4) 4-way ceiling cassette type (FDTC)
・
Sound pressure level
③
Model FDTC25VF
1.5m
Mike position
(Center & below unit)
●
Mike position
1m
Unit
Supply duct
Return duct
2m
1m
1m
Air
1.5m
1m
Unit
Supply duct
Return duct
External staic pressure : 10Pa
External staic pressure : 10Pa
2m
Air
1.5m
Unit
Air
●
Mike position
●
Mike position