Noise Criterion Curves - Sanyo SPW-C483GYH8 Service Manual

8. Concealed Duct High Static Pressure Type

8-5. Noise criterion curves

MODEL : SPW-D253GH56
SOUND LEVEL : HIGH 44 dB(A), NC 38
CONDITION : Under the unit 1.5 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
90
80
70
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
MODEL : SPW-D483GH56
SOUND LEVEL : HIGH 47 dB(A), NC 42
CONDITION : Under the unit 1.5 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
90
80
70
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
ECO MULTI SYSTEM Unit Specifications
MODEL
SOUND LEVEL : HIGH 45 dB(A), NC 39
CONDITION
SOURCE
90
80
NC-70 70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
20
APPROXIMATE
NC-20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
0313_D_I
REMARKS: 1. Value obtained in the actual place
NC-70
NC-60
NC-50
NOTE
To evaluate "Noise level" the maximum number of the
NC-40
measured OCTAVE BAND SOUND PRESSURE LEVEL
is used. Read the number on each BAND CENTER
NC-30
FREQUENCIES (horizontal axis) ranging from 63 Hz to
8000 Hz and select the maximum value (vertical axis)
among them.
NC-20
0315_D_I
I - 105
: SPW-D363GH56
: Under the unit 1.5 m
: 220 - 230 - 240 V, 1 Phase, 50 Hz
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
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.
1
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
0314_D_I
SM830052