Airwell EFL 100-3R410, Technical Manual, Page: 268 / 328

4
4 - 1 3 5
3-WAY FLOW LOGIC Unit Specifications
8. Floor-Standing Type (ST-NFFL Type)
8-4. Noise Criterion Curves
MODEL : ST-NFFL 12
SOUND LEVEL : HIGH 39 dB(A), NC 33
LOW 29 dB(A), NC 23
CONDITION : In front of the unit 1 m, HEIGHT 1 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
MODEL : ST-NFFL 7, ST-NFFL 9
SOUND LEVEL : HIGH 33 dB(A), NC 27
LOW 28 dB(A), NC 23
CONDITION : In front of the unit 1 m, HEIGHT 1 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
MODEL : ST-NFFL 18
SOUND LEVEL : HIGH 39 dB(A), NC 34
LOW 31 dB(A), NC 26
CONDITION : In front of the unit 1 m, HEIGHT 1 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
MODEL : ST-NFFL 24
SOUND LEVEL : HIGH 41 dB(A), NC 37
LOW 35 dB(A), NC 30
CONDITION : In front of the unit 1 m, HEIGHT 1 m
SOURCE : 220 - 230 - 240 V, 1 Phase, 50 Hz
60
50
40
30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63 125 250 500 1000 2000 4000 8000
NC-50
NC-40
NC-30
NC-20
60
50
40
30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63 125 250 500 1000 2000 4000 8000
NC-50
NC-40
NC-30
NC-20
60
50
40
30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63 125 250 500 1000 2000 4000 8000
NC-50
NC-40
NC-30
NC-20
60
50
40
30
20
10
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
63 125 250 500 1000 2000 4000 8000
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)
Frequency at center of sound pressure band (Hz) Frequency at center of sound pressure band (Hz)
Sound Pressure Le
v
el (dB)
(0 dB = 0.0002
μ
bar)
Frequency at center of sound pressure band (Hz)
Sound Pressure Le
v
el (dB)
(0 dB = 0.0002
μ
bar)
Frequency at center of sound pressure band (Hz)
04-218 Airwell-4_8-9.qxp 01/06/2007 13:25 Page 135