6
4
NOISE CRITERIA CURVES
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
80
70
60
50
40
30
20
10
0
63
125
250
500
1000
2000
4000
8000
OCT
AVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
FUNCTION
39
41
SPL(dB(A))
LINE
Super High
FAN SPEED
HEATING
NC-10
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
80
70
60
50
40
30
20
10
0
63
125
250
500
1000
2000
4000
8000
OCT
AVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
FUNCTION
39
41
SPL(dB(A))
LINE
Super High
FAN SPEED
HEATING
NC-10
MFZ-KJ25VE
MFZ-KJ25VE2
INDOOR UNIT
WALL
1m
1m
MICROPHONE
Test conditions
Cooling : Dry-bulb temperature 27 °C Wet-bulb temperature 19 °C
Heating : Dry-bulb temperature 20 °C
MFZ-KJ35VE
MFZ-KJ35VE2
MFZ-KJ50VE
MFZ-KJ50VE2
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
80
70
60
50
40
30
20
10
0
63
125
250
500
1000
2000
4000
8000
OCT
AVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
COOLING
FUNCTION
44
50
SPL(dB(A))
LINE
Super High
FAN SPEED
HEATING
NC-10
OBH666C