Airwell WNG12, Technical Manual

Page: 35 / 44

6-1
SOUND LEVEL CHARACTERISTICS
Service Manual - DUO Series
6. SOUND LEVEL CHARACTERISTICS
6.1 Outdoor Units
6.2 Sound Pressure Level Spectrum
(Measured as Figure 1)
OU7- 0909 RC/ST Cooling OU7-0909 RC/ST Heating
OU7-0912 RC/ST Cooling OU7-0912 RC/ST Heating
BAND CENTER FREQUENCIES, Hz
A PPRO X IM A TE
THRE S HOLD OF
HE A RING FOR
CONTINUOU S
NOI S E
NC-70
NC-60
NC-50
NC-40
NC- 3 0
NC-20
OCT
A
VE
BAND
SOUND
PRESSURE
LEVEL,
dB
re
0.002
MICRO
BAR
BAND CENTER FREQUENCIES, Hz
A PPRO X IM A TE
THRE S HOLD OF
HE A RING FOR
CONTINUOU S
NOI S E
NC-70
NC-60
NC-50
NC-40
NC- 3 0
NC-20
OCT
A
VE
BAND
SOUND
PRESSURE
LEVEL,
dB
re
0.002
MICRO
BAR
Microphone Distance from Unit
BAND CENTER FREQUENCIES, Hz
A PPRO X IM A TE
THRE S HOLD OF
HE A RING FOR
CONTINUOU S
NOI S E
NC-70
NC-60
NC-50
NC-40
NC- 3 0
NC-20
OCT
A
VE
BAND
SOUND
PRESSURE
LEVEL,
dB
re
0.002
MICRO
BAR
BAND CENTER FREQUENCIES, Hz
A PPRO X IM A TE
THRE S HOLD OF
HE A RING FOR
CONTINUOU S
NOI S E
NC-70
NC-60
NC-50
NC-40
NC- 3 0
NC-20
OCT
A
VE
BAND
SOUND
PRESSURE
LEVEL,
dB
re
0.002
MICRO
BAR
Fig.1