Airwell EDS25 Service Manual page 30

Model: GCN9RC(R22)
Type: PILOT
Outdoor Octave Band Sound Pressure Level, dB
Outdooor
RPM 747
Octave
Cooling Heating
Band
63 55 56
125 56 56
250 52 53
500 49 49
1000 45 46
2000 39 40
4000 35 36
8000 27 29
Outdoor Sound Pressure
Outdoor Sound Power
(cooling)
Outdoor Sound Pressure
Outdoor Sound Power
(heating),
Noise spectrum & NC Curves
90
80
70
60
50
40
30
20
10
0
63 125 250
Octave Band Center Frequencies [Hz]
Outdoor Unit Noise Data Report - Fix RPM
Background Noise,dB(A):
50.5
, dB(A)
(cooling)
, dB(A) 60.9
, dB(A) 51.1
(heating)
dB(A) 60.8
Cooling
NC65
NC60
NC55
NC50
NC45
NC40
NC35
NC30
NC25
NC20
NC15
500 1000 2000 4000 8000
Outdoor
25.1
Drawing of microphon position
Noise spectrum & NC Curves
90
80
70
60
50
40
30
20
10
0
63 125
Octave Band Center Frequencies [Hz]
SEND TO
Outdoor
Unit
1m
Mic.
Ground
Heating
250 500 1000 2000 4000 8000
NC65
NC60
NC55
NC50
NC45
NC40
NC35
NC30
NC25
NC20
NC15