Noise Criterion Curves - Sanyo ECO-i AHX0752 Technical Data Manual

4. Concealed Duct Type (U Type)

4-4. Noise Criterion Curves

MODEL : UHX0752
SOUND LEVEL : HIGH 29 dB(A), NC 20 / LOW 22 dB(A), NC 13
CONDITION : Under the unit 4.9 ft
SOURCE : 208 - 230 V, Single-phase, 60 Hz
60
50
40
1
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63
2
Frequency at center of sound pressure band (Hz)
3
MODEL : UHX2452
SOUND LEVEL : HIGH 34 dB(A), NC 22 / LOW 27 dB(A), NC 18
CONDITION : Under the unit 4.9 ft
SOURCE : 208 - 230 V, Single-phase, 60 Hz
4
60
50
5
40
30
6
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63
Frequency at center of sound pressure band (Hz)
7
8
UHX1252
125 250 500 1000 2000 4000 8000
125 250 500 1000 2000 4000 8000
W-3WAY ECO-i SYSTEM Unit Specifi cations
MODEL
SOUND LEVEL : HIGH 30 dB(A), NC 23 / LOW 25 dB(A), NC 17
CONDITION
SOURCE
60
50
NC-50
40
NC-40
30
NC-30
20
APPROXIMATE
NC-20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
Frequency at center of sound pressure band (Hz)
NC-50
NC-40
NC-30
NC-20
4-56
60Hz
: UHX1852
: Under the unit 4.9 ft
: 208 - 230 V, Single-phase, 60 Hz
63 125 250 500 1000 2000 4000 8000
NC-50
NC-40
NC-30
NC-20