Noise Criteria Curves - Mitsubishi Electric MUH-GA50VB-E1 Service Manual

4

NOISE CRITERIA CURVES

MUH-GA50VB
Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature 24:
Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MUH-GA80VB
Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature 24:
Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
FAN SPEED SPL(dB(A)) LINE
High
52
500 1000 2000 4000 8000
FAN SPEED SPL(dB(A)) LINE
High
55
500 1000 2000 4000 8000
MUH-GA60VB
Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature 24:
Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:
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
MICROPHONE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
8
FAN SPEED SPL(dB(A))
High
53
250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
OUTDOOR UNIT
1m
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000