Sound Pressure Spectrum - Daikin VAM-FA Technical Data Manual

10 Sound data

10 - 2 Sound Pressure Spectrum

VAM150FA
1
10
Approximate
threshold
hearing for
continuous noise
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.
measuring point
VAM350FB
U-H H L
32 31.5 23.5
NOTES
1.
2.
3.
4.
5.
6.
30
• Heat reclaim ventilation • VAM-FA/FB
VAM150FA
Octave band center frequency (Hz)
Scale
U-H
A 27
C
1.5m
• Ventilation • Heat reclaim ventilation
VAM250FA
4D036868
NOTES
1. Over All (dB):
Air fl ow rate
(B,G,N is already rectifi ed)
H I
2. Operating conditions:
26 20.5
• 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.
measuring point
VAM500FB
4D082471
U-H H
33 31.5
NOTES
1.
2.
3.
4.
5.
6.
VAM250FA
Approximate
threshold
hearing for
continuous noise
Octave band center frequency (Hz)
Scale
A
C
1.5m
L
24.5
4D036870
Air fl ow rate
U-H H I
28 26 21
4D082472