Noise Criteria Curves - Mitsubishi Electric MUZ-HJ25VA-E1 Service Manual

4

NOISE CRITERIA CURVES

MUZ-HJ25VA
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
OBH648
FUNCTION SPL(dB(A)) LINE
COOLING 50
HEATING 50
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
MUZ-HJ35VA
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
Test conditions
Cooling : Dry-bulb temperature 35°C
Heating : Dry-bulb temperature 7°C Wet-bulb temperature
OUTDOOR UNIT
1m
MICROPHONE
5
FUNCTION SPL(dB(A)) LINE
COOLING 50
HEATING 50
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
6°C