Noise Criteria Curves - Mitsubishi Electric MUH-GA35VB Service Manual

NOISE CRITERIA CURVES

4
MUH-GA20VB-
E1
90
80
70
60
50
40
30
APPROXIMATE
20
TERESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
FUNCTION SPL(dB ) LINE
(A)
COOLING
47
HEATING
Test conditions,
Cooling :DB35: WB24:
Heating :DB 7: WB 6:
500 1000 2000 4000 8000
MUH-GA25VB-
MUH-GA35VB-
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
APPROXIMATE
20
TERESHOLD OF
HEARING FOR
NC-20
CONTINUOUS
NOISE
10
63 125
MICROPHONE
7
E1 SPL(dB
FUNCTION
COOLING
E1
HEATING
Test conditions,
Cooling :DB35:
Heating :DB 7:
250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
OUTDOORUNIT
1m
) LINE
(A)
49
WB24:
WB 6:
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000