Noise Criterion Curves - Mitsubishi Electric MFZ-KA-VA Technical Data Manual

9

NOISE CRITERION CURVES

MFZ-KA25VA
FAN SPEED
Super High
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:
Heating : Dry-bulb temperature 20: Wet-bulb temperature 15:
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MFZ-KA50VA
FAN SPEED
Super High
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:
Heating : Dry-bulb temperature 20: Wet-bulb temperature 15:
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
FUNCTION SPL(dB(A)) LINE
COOLING 37
HEATING 37
500 1000 2000 4000 8000
FUNCTION SPL(dB(A)) LINE
COOLING 43
HEATING 44
500 1000 2000 4000 8000
MFZ-KA35VA
FAN SPEED
Test conditions,
Cooling : Dry-bulb temperature 27: Wet-bulb temperature 19:
Heating : Dry-bulb temperature 20: Wet-bulb temperature 15:
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
NC-20
CONTINUOUS
NOISE
10
63 125
NC-70
NC-60
MICROPHONE
NC-50
1m
NC-40
NC-30
NC-20
58
SPL(dB(A))
FUNCTION
COOLING 38
Super High
HEATING 38
250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
INDOOR UNIT
WALL
1m
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000