Service manual

7
NOISE CRITERIA CURVES
4
COOLING
FUNCTION
SPL(dB(A)) LINE
High
FAN SPEED
HEATING
53
55
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 35: Wet-bulb temperature (24:)
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
Heating : Dry-bulb temperature 7: Wet-bulb temperature 6:
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
MUZ-GA50VA -
MUZ-GA60VA -
MUZ-GA71VA -
E1
E1
E1
OUTDOOR UNIT
MICROPHONE
1m
OB389 --1qxp 05.1.26 18:14 Page 7