Sanyo SPW-XR253GH56 Technical Data & Service Manual page 97

1-8 Noise Criterion Curves
Concealed Duct Type
MODEL : SPW-UR253GHN56
SOUND LEVEL : HIGH 34 dB(A), NC 22 / LOW 27 dB(A), NC 18
CONDITION : Under the unit 1.5 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MODEL : SPW-UR483GHN56
1
SOUND LEVEL : HIGH 40 dB(A), NC 33 / LOW 33 dB(A), NC 25
CONDITION : Under the unit 1.5 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
60
1 2
50
40
30
3
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
4
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.
5
NOTE
To evaluate "Noise level" the maximum number of the measured OCTAVE BAND SOUND PRESSURE LEVEL is used.
Read the number on each BAND CENTER FREQUENCIES (horizontal axis) ranging from 63 Hz to 8000 Hz and select
the maximum value (vertical axis) among them.
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
1761_U_I
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
1763_U_I
MODEL : SPW-UR363GHN56
SOUND LEVEL : HIGH 38 dB(A), NC 30 / LOW 31 dB(A), NC 21
CONDITION : Under the unit 1.5 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
I - 92
1. Specifications
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
1762_U_I
SM830080