Service manual

5
NOISE CRITERIA CURVES
4
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-10
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 27 Wet-bulb temperature19
Heating : Dry-bulb temperature 20 Wet-bulb temperature -
MSC-GE20VB
COOLING
High
FUNCTIONFAN SPEED
36
HEATING
SPL(dB
(A))LINE
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-10
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions,
Cooling : Dry-bulb temperature 27 Wet-bulb temperature 19
Heating : Dry-bulb temperature 20 Wet-bulb temperature -
MSC-GE25VB
COOLING
High
FUNCTIONFAN SPEED
36
HEATING 39
SPL(dB
(A))LINE
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-10
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB re 0.0002 MICRO BAR
BAND CENTER FREQUENCIES, Hz
Test conditions.
Cooling : Dry-bulb temperature 27 Wet-bulb temperature 19
Heating : Dry-bulb temperature 20 Wet-bulb temperature -
MSC-GE35VB
COOLING
FUNCTIONFAN SPEED
40
HEATING
High
39
SPL(dB
(A))LINE
OBH529A