14
THERMA V Split Type
Hydro Box Unit
8. Sound levels
Sound Power Level
Note
1. Data is valid at diffuse field condition.
2. Reference acoustic intensity 0dB = 10E-6μW/m
2
3. Sound power level is measured on the rated condition in the reverberation rooms. Refer to the Model
Specifications for nominal conditions(Power source and Ambient temperature, etc)
4. Sound levels can be increased in accordance with installation and operating conditions. (Operating conditions
include some functional condition like Static pressure mode, air guide use, Room target temperature setting, etc
and these functions are different in accordance with each model.)
5. Sound level will vary depending on a range of factors such as the construction (acoustic absorption coefficient)
of particular room in which the equipment in installed.
AHNW16606A3 [HN1616 NK3], AHNW16809A3 [HN1639 NK3]
Model Sound Power Level [dB(A)]
AHNW16606A3 [HN1616 NK3] 44
AHNW16809A3 [HN1639 NK3] 44
Octave Band Center Frequency (Hz)
Sound Power Level (0dB = 10E-6μPa)
20
30
40
50
60
70
80
90
100
125 250 500 1000 2000 4000 8000
NR-30
NR-35
NR-40
NR-45
NR-50
NR-55
NR-60
NR-65
NR-70
NR-75
NR-80
NR-85
NR-90
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