Noise Criteria Curves - Mitsubishi Electric MCFH-GA35VB-E1 Service Manual

4

NOISE CRITERIA CURVES

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