Multi F Engineering Manual

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28 | MULTI F OUTDOOR UNIT
Multi F and Multi F MAX Heat Pump System Engineering Manual
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MULTI F OUTDOOR UNIT
Table 19: Sound Power Levels (dB[A]).
Model No.
Sound Power Level (dB[A])
Cooling
LMU183HV 63
LMU243HV 64
LMU303HV 64
LMU363HV 64
Sound Power Levels
• Data is valid under diffuse field conditions.
• Data is valid under nominal operating conditions.
• Sound power level is measured using rated conditions, and tested
in a reverberation room per ISO 3741 standards.
• Sound level will vary depending on a range of factors such as
construction (acoustic absorption coefficient) of particular area in
which the equipment is installed.
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2
Figure 16: Sound Power Level Diagrams.
LMU243HVLMU183HV LMU303HV
10
20
30
40
50
60
70
80
90
100
125 250 500 1000 2000 4000 8000
Sound Power Level (0dB = 10E-6ȝW/m
2
)
NR-70
NR-65
NR-60
NR-55
Octave Band Center Frequency (Hz)
NR-50
NR-45
NR-40
NR-35
NR-30
NR-75
NR-25
NR-20
NR-80
NR-85
NR-90
Cooling
10
20
30
40
50
60
70
80
90
100
110
120
125 250 500 1000 2000 4000 8000
NR-70
NR-65
NR-60
Sound Power Level (0dB = 10E-6ȝW/m
2
)
NR-55
Octave Band Center Frequency (Hz)
NR-50
NR-45
NR-40
NR-35
NR-30
NR-75
NR-25
NR-20
NR-80
NR-85
NR-90
NR-95
Cooling
NR-100
NR-105
NR-110
10
20
30
40
50
60
70
80
90
100
110
125 250 500 1000 2000 4000 8000
NR-70
NR-65
NR-60
Sound Power Level (0dB = 10E-6ȝW/m
2
)
NR-55
Octave Band Center Frequency (Hz)
NR-50
NR-45
NR-40
NR-35
NR-30
NR-75
NR-25
NR-20
NR-80
NR-85
NR-90
NR-95
Cooling
NR-100
NR-105
NR-110
LMU363HV
10
20
30
40
50
60
70
80
90
100
125 250 500 1000 2000 4000 8000
Sound Power Level (0dB = 10E-6ȝW/m
2
)
NR-70
NR-65
NR-60
NR-55
Octave Band Center Frequency (Hz)
NR-50
NR-45
NR-40
NR-35
NR-30
NR-75
NR-25
NR-20
NR-80
NR-85
NR-90
Cooling