5
NOISE CRITERIA CURVES
4
MCFH-GA60VB -
E1
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
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : DB 27
:
WB 19
:\
Heating : DB 20
:
WB 15
:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING
HEATING
FUNCTION
High
FAN SPEED
48
SPL(dB
(A)
)
LINE
MCFH-GA35VB -
E1
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
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : DB 27
:
WB 19
:\
Heating : DB 20
:
WB 15
:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING
HEATING
FUNCTION
High
FAN SPEED
46
SPL(dB
(A)
)
LINE
MCFH-GA50VB -
E1
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
OCT
A
VE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : DB 27
:
WB 19
:\
Heating : DB 20
:
WB 15
:
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING
HEATING
FUNCTION
High
FAN SPEED
48
SPL(dB
(A)
)
LINE
INDOOR UNIT
WALL
1m
1m
MICROPHONE
OB380--1.qxp 04.12.23 17:33 Page 5