Noise Criteria Curves - Mitsubishi Electric MXZ-2B30VA Service Manual

NOISE CRITERIA CURVES

4
MXZ-2B30VA
90
80
70
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MXZ-2B52VA
90
80
70
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
OBH554D
FAN SPEED FUNCTION SPL(dB ) LINE
(A)
High Cooling 46
High Heating 47
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
NC-10
500 1000 2000 4000 8000
FAN SPEED FUNCTION SPL(dB ) LINE
(A)
High Cooling 49
High Heating 50
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
NC-10
500 1000 2000 4000 8000
MXZ-2B40VA
90
80
70
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125
BAND CENTER FREQUENCIES, Hz
MXZ-3B54VA
90
80
70
60
50
40
30
20
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125
13
FAN SPEED FUNCTION SPL(dB )
(A)
High Cooling 47
High Heating 48
250 500 1000 2000 4000
FAN SPEED FUNCTION SPL(dB
(A)
47
High Cooling
51
High Heating
250 500 1000 2000 4000
BAND CENTER FREQUENCIES, Hz
LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
8000
) LINE
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
8000