Noise Criteria Curves - Mitsubishi Electric MCFH-GA35VB Service Manual

4

NOISE CRITERIA CURVES

MCFH-GA35VB -
E1
FAN SPEED
High
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MCFH-GA60VB -
E1
FAN SPEED
High
90
80
70
60
50
40
30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
SPL(dB ) LINE
FUNCTION
(A)
COOLING
46
HEATING
Test conditions,
Cooling : DB 27: WB 19:\
Heating : DB 20: WB 15:
500 1000 2000 4000
SPL(dB ) LINE
FUNCTION
(A)
COOLING
48
HEATING
Test conditions,
Cooling : DB 27: WB 19:\
Heating : DB 20: WB 15:
500 1000 2000 4000 8000
MCFH-GA50VB -
90
80
70
NC-70
60
NC-60
50
NC-50
40
NC-40
30
NC-30
APPROXIMATE
20
THRESHOLD OF
HEARING FOR
NC-20
CONTINUOUS
NOISE
10
8000 63
MICROPHONE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
5
E1
SPL(dB
FAN SPEED FUNCTION
COOLING
High 48
HEATING
Test conditions,
Cooling : DB 27: WB 19:\
Heating : DB 20: WB 15:
125 250 500 1000 2000
BAND CENTER FREQUENCIES, Hz
INDOOR UNIT
WALL
1m
1m
) LINE
(A)
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
4000 8000