Noise Criterion Curves - Mitsubishi Electric PUZ-A18NHA4 Service Manual

5-3. NOISE CRITERION CURVES

PUY-A12NHA4
PUY-A12NHA4-BS
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
PUY-A24/30/36NHA4
PUY-A24/30/36NHA4-BS
PUZ-A24/30/36NHA4
PUZ-A24/30/36NHA4-BS
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250
BAND CENTER FREQUENCIES, Hz
MICROPHONE
3.3ft
5ft
MODE SPL(dB) LINE
COOLING 46
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
SPL(dB)
MODE LINE
COOLING 48
HEATING
50
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
500 1000 2000 4000 8000
UNIT
GROUND
PUY-A18NHA4
PUY-A18NHA4-BS
PUZ-A18NHA4
PUZ-A18NHA4-BS
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250 500
BAND CENTER FREQUENCIES, Hz
PUY-A42NHA4
PUY-A42NHA4-BS
PUZ-A42NHA4
PUZ-A42NHA4-BS
90
80
70
60
50
40
30
20 APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
10
63 125 250 500
BAND CENTER FREQUENCIES, Hz
10
SPL(dB)
MODE LINE
COOLING 48
HEATING 47
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000
SPL(dB)
MODE LINE
COOLING 51
HEATING 55
NC-70
NC-60
NC-50
NC-40
NC-30
NC-20
1000 2000 4000 8000