Noise Criteria Curves - Mitsubishi Electric MUZ-A18YV Service Manual

4

NOISE CRITERIA CURVES

MUZ-A18YV -
E1
MUZ-A24YV -
E1
MUZ-A26YV -
E1
SPEED
High
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
FUNCTION SPL(dB(A)) LINE
COOLING 53
HEATING 55
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
OUTDOOR UNIT
MICROPHONE
10
1m