M-Series SEZ-KA Engineering Manual

SEZ-40
SEZ Ducted Heat Pump Systems (August 2014)
Due to continuing improvement, above specication may be subject to change without notice.
© 2014 Mitsubishi Electric US, Inc.
3-12. SOUND PRESSURE LEVELS
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD18NA4.TH
External static pressure:
0.06[in.WG](15Pa)
High
Middle
38
SPL(dB)
34
Low
30
LINE
<60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD18NA4.TH
External static pressure:
0.02[in.WG](5Pa)
High
Middle
37
SPL(dB)
33
Low
29
LINE
<60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD18NA4.TH
External static pressure:
0.20[in.WG](50Pa)
High
Middle
39
SPL(dB)
36
Low
32
LINE
<60Hz>
NOTCH
90
80
70
60
50
40
30
20
10
63 125 250 500 1000 2000 4000 8000
APPROXIMATE
THRESHOLD OF
HEARING FOR
CONTINUOUS
NOISE
NC-60
NC-50
NC-40
NC-30
NC-20
NC-70
OCTAVE BAND SOUND PRESSURE LEVEL, dB (0 dB = 0.0002 µbar)
BAND CENTER FREQUENCIES, Hz
SEZ-KD18NA4.TH
External static pressure:
0.14[in.WG](35Pa)
High
Middle
39
SPL(dB)
35
Low
31
LINE
<60Hz>
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.