Concealed Duct Type - Sanyo C4272R Service Manual

1-8 Noise Criterion Curves

Concealed Duct Type

MODEL : UH2672R
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, 1 Phase, 60 Hz
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
MODEL
SOUND LEVEL : HIGH 38 dB(A), NC 30 / LOW 31 dB(A), NC 21
CONDITION
SOURCE
60
50
NC-50
40
NC-40
30
NC-30
20
NC-20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
1761_U_I
I-79
1. Specifications
: UH3672R
: Under the unit 4.9 ft.
: 208 - 230 V, 1 Phase, 60 Hz
63 125 250 500 1000 2000 4000 8000
BAND CENTER FREQUENCIES, Hz
NC-50
NC-40
NC-30
NC-20
1762_U_I
1
2
3
4
5
6
SM831148