Concealed duct type (u type) – Sanyo CHX03652 User Manual
Page 157
4-47
Mini ECO-i SYSTEM Unit Specifi cations
1
2
3
4
5
6
7
8
MODEL
: UHX0752
UHX1252
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
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
MODEL
: UHX1852
SOUND LEVEL : HIGH 30 dB(A), NC 23 / LOW 25 dB(A), NC 17
CONDITION
: Under the unit 4.9 ft
SOURCE
: 208 - 230 V, Single-phase, 60 Hz
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
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
e
l (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)
F
f
d
b
d (H )
60Hz
4-4. Noise Criterion Curves
4. Concealed Duct Type (U Type)