SM830063
I - 49
1
ECO MULTI SYSTEM Unit Specifications
0281_S_I
90
80
70
60
50
40
30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63
125
250
500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
OCTAVE BAND SOUND PRESSURE LEVEL, dB
(0 dB = 0.0002 µbar)
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
0280_S_I
90
80
70
60
50
40
30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63
125
250
500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
OCTAVE BAND SOUND PRESSURE LEVEL, dB
(0 dB = 0.0002 µbar)
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
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.
To evaluate “Noise level” the maximum number of the measured OCTAVE BAND SOUND PRES-
SURE 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.
MODEL
: SPW-SR183GH56
SOUND LEVEL
: HIGH
34 dB(A),
NC 29
LOW
27 dB(A),
NC 24
CONDITION
: Center,
Under the unit 1.5 m
SOURCE
: 220 - 230 - 240 V,
1 Phase,
50 Hz
MODEL
: SPW-SR253GH56
SOUND LEVEL
: HIGH
37 dB(A),
NC 33
LOW
30 dB(A),
NC 29
CONDITION
: Distance 1 m,
Under the unit 1.5 m
SOURCE
: 220 - 230 - 240 V,
1 Phase,
50 Hz
3. 2-Way Air Discharge Semi-concealed Type
NOTE