Daikin VAM-FA - 10-2 Sound Pressure Spectrum

• Heat reclaim ventilation • VAM-FA/FB
1
10
• Ventilation • Heat reclaim ventilation
30
10 Sound data
10 - 2 Sound Pressure Spectrum
VAM150FA
4D036868
NOTES
1. Over All (dB):
(B,G,N is already rectifi ed)
2. Operating conditions:
• Power source:
Model: VAM150FA
• Ventilation mode: Total heat exchange
3. Measuring place:
• Operation noise is measured in an anechoic chamber.
• The operation noise level becomes greater than this value depending on the operation
conditions, reflected sound and peripheral noise.
• Operation noise differs with operation and ambient conditions.
• U-H: ultra-high, H: high, L: low
4. Operation noise differs with operation and ambient conditions
5. Location of microphone.
Scale
Air fl ow rate
U-H H I
A 27 26 20.5
C
1.5m
measuring point
Octave band sound pressure level dB (0dB = 0.0002 bar)
Octave band center frequency (Hz)
Approximate
threshold
hearing for
continuous noise
VAM150FA
VAM250FA
4D036870
NOTES
1. Over All (dB):
(B,G,N is already rectifi ed)
2. Operating conditions:
• Power source:
Model: VAM250FA
• Ventilation mode: Total heat exchange
3. Measuring place:
• Operation noise is measured in an anechoic chamber.
• The operation noise level becomes greater than this value depending on the operation
conditions, reflected sound and peripheral noise.
• Operation noise differs with operation and ambient conditions.
• U-H: ultra-high, H: high, L: low
4. Operation noise differs with operation and ambient conditions
5. Location of microphone.
Scale
Air fl ow rate
U-H H I
A 282621
C
1.5m
measuring point
Octave band sound pressure level dB (0dB = 0.0002 bar)
Octave band center frequency (Hz)
Approximate
threshold
hearing for
continuous noise
VAM250FA
VAM350FB
4D082471
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U-H H L
32 31.5 23.5
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