10
NOISE CRITERIA CURVES
4
COOLING
FUNCTION
SPL(dB(A))
LINE
High
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
:
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
MUZ-A18YV -
MUZ-A24YV -
MUZ-A26YV -
E1
E1
E1
OUTDOOR UNIT
MICROPHONE
1m
OB346E --1qxp 07.2.8 6:53 PM Page 10
