Daikin FTV-A Series Engineering Data page 62

Sound Level
Sound Pressure Level
Model Speed
High
Med
FTV35A
Low
Quiet
NC Curve
90
80
70
60
50
40
30
20
10
APPROXIMATE
THRESHOLD HEARING FOR
CONTINUOUS NOISE
0
63
60
1/1 Octave A-weighted Sound Pressure Level (dB, ref 20µPa)
125Hz 250Hz 500Hz
43 40 37
38 36 33
36 34 31
30 29 25
125 250 500
OCTAVE BAND CENTER FREQUENCY (Hz)
1kHz 2kHz
36 32
31 25
29 23
23 17
NC-70 NC-70 NC-70
NC-60 NC-60 NC-60
NC-50 NC-50 NC-50
NC-40 NC-40 NC-40
NC-30 NC-30 NC-30
NC-20 NC-20 NC-20
1k 2k 4k 8K
Overall
(dBA)
4kHz 8kHz
25 14 40
17 10 35
14 9 33
11 9 28
HIGH (H)
MEDIUM (M)
LOW (L)
QUIET (Q)
Noise
Criteria
35
30
28
21
3D122800