Engineering Manual

A-207
WALL
UNIT
31-1/2 inch
(0.8m)
39-3/8 inch (1m)
MICROPHONE
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-70
BAND CENTER FREQUENCIES, Hz
SPL(dB(A))
LINE
49
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
MSZ-D30NA
MSZ-D36NA
MSY-D30NA
MSY-D36NA
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
COOLING(Hi)
HEATING(Hi)
NOTCH
NOTE: The sound level is measured in an anechoic
room where echoes are few, when compressor
stops. The sound may be bigger than
displayed level under actual installation
condition by surrounding echoes. The sound
level can be higher by about 2 dB than the
displayed level during cooling and heating
operation.
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-70
BAND CENTER FREQUENCIES, Hz
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
MSZ-FE12NA
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
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-70
BAND CENTER FREQUENCIES, Hz
SPL(dB(A))
LINE
39
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
MSZ-FE09NA
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
40
43
43
COOLING(SHi)
HEATING(SHi)
NOTCH
COOLING(SHi)
HEATING(SHi)
NOTCH
NOTE: The sound level is measured in an anechoic room where echoes are few, when compressor stops. The sound
may be bigger than displayed level under actual installation condition by surrounding echoes.The sound level
can be higher by about 2 dB than the displayed level during cooling and heating operation.