Daikin FWW Series Technical Manual page 34

Model Speed
High
FUD20B Med
Low
High
FUD25B Med
Low
FUD30B High
Measured In Reverberation Chamber
30
1/1 Octave Sound Power Level (dBA, reference 1pW)
125Hz 250Hz 500Hz
68 67 72
64 64 68
61 60 63
71 71 74
70 69 73
67 67 71
75 76 75
1kHz 2kHz 4kHz
70 65 65
65 61 59
60 56 53
74 70 70
72 68 68
69 65 64
72 69 65
Sound Data
Overall
A (dBA)
8kHz
57 74
51 69
43 65
63 78
60 76
56 73
60 77