Sanyo Big PACi 90 Series - Page 104

1
1-99
1-8. Noise Criterion Curves
Concealed-Duct Type
Strong
Weak
Both 50Hz / 60Hz
400063 125 250 800020001000500
Frequency at center of sound pressure band (Hz)
Overall
MODEL
:
:
:
SPW-US185H
SOUND LEVEL 35
dB(A)
WEAK 31
dB(A)
CONDITION
STRONG
1.5 m directly below unit
60
50
40
30
20
10
Sound pressure level (dB)
(0dB = 0.0002µbar)
Approximate
minimum
audible limit for
continuous noise
NC-20
NC-30
NC-40
NC-50
1.5 m
Air discharge
(Concealed-Duct Type)
Air intake
Unit
1.5 m directly below unit
Auxiliary Duct
of 2 m length
Auxiliary Duct
of 1 m length
REMARKS: 1. Value obtained in the actual place where the unit is
installed may be slightly higher than the values shown
in this graph because of the conditions of operation,
the structure of the building, the background noise and
other factors.
2. The test results were obtained from an anechoic room.
3. The layout of the testing condition is shown at right.
To evaluate the noise level, the maximum value of the measured sound pressure level is used. Read the value at
each frequency level (on horizontal axis, center of the sound pressure band) from 63 Hz to 8000 Hz, and select the
corresponding maximum value indicated on the vertical axis.
NOTE
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