Airwell EFL 100-3R410, Technical Manual, Page: 279 / 328

4
4 - 146
3-WAY FLOW LOGIC Unit Specifications
9. 1-Way Air Discharge Semi-concealed Slim Type (ST-NKSFL Type)
9-4. Noise Criterion Curves
MODEL : ST-NKSFL 9
ST-NKSFL 12
SOUND LEVEL : HIGH 43 dB(A), NC 41 / LOW 33 dB(A), NC 27
(HIGH 41 dB(A), NC 37 / LOW 33 dB(A), NC 27)
( ) : when Booster cable connected
CONDITION : Under the unit 1.5 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
MODEL : ST-NKSFL 18
SOUND LEVEL : HIGH 44 dB(A), NC 41 / LOW 35 dB(A), NC 29
(HIGH 42 dB(A), NC 38 / LOW 35 dB(A), NC 29)
( ) : when Booster cable connected
CONDITION : Under the unit 1.5 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
90
80
70
60
50
40
30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63 125 250 500 1000 2000 4000 8000
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
90
80
70
60
50
40
30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63 125 250 500 1000 2000 4000 8000
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
MODEL : ST-NKSFL 24
SOUND LEVEL : HIGH 48 dB(A), NC 41 / LOW 37 dB(A), NC 30
(HIGH 46 dB(A), NC 38 / LOW 37 dB(A), NC 30)
( ) : when Booster cable connected
CONDITION : Under the unit 1.5 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
90
80
70
60
50
40
30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63 125 250 500 1000 2000 4000 8000
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
Sound Pressure Le
v
el (dB)
(0 dB = 0.0002
μ
bar)
Sound Pressure Le
v
el (dB)
(0 dB = 0.0002
μ
bar)
Sound Pressure Le
v
el (dB)
(0 dB = 0.0002
μ
bar)
Frequency at center of sound pressure band (Hz) Frequency at center of sound pressure band (Hz)
Frequency at center of sound pressure band (Hz)
04-218 Airwell-4_8-9.qxp 01/06/2007 13:25 Page 146