Noise Criterion Curves - Panasonic U-26PE1U6 Technical Data & Service Manual

1-8. Noise Criterion Curves

Concealed Duct (Type F2)
MODEL : S-26PF2U6
SOUND LEVEL : HIGH 35 dB(A), NC 29/ LOW 26 dB(A), NC 20
CONDITION : 4.9 ft. directly below unit
SOURCE : 208-230V,1Phase,60Hz
90
80
70
60
50
40
30
APPROXIMATE
20 THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250 500
BAND CENTER FREQUENCIES, Hz
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000
: S-36PF2U6
MODEL
SOUND LEVEL : HIGH 39 dB(A), NC 33/ LOW 31 dB(A), NC 24
CONDITION : 4.9 ft. directly below unit
SOURCE : 208-230V,1Phase,60Hz
90
80
70
60
50
40
30
APPROXIMATE
THRESHOLD OF
20
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250 500
BAND CENTER FREQUENCIES, Hz
1-73
1. Specifications
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000
1