443
Fresh Air Type
Indoor Unit
17.8 Sound pressure level
Note:
1. The test is on the standard condition.
2. The noise level dB is measured in the semi-anechoic chamber, using a Real Time Analyzer calibrated sound
intensity meter. It is a sound pressure noise level.
Unit
Air
Air outlet duct
Air return duct
Outlet side
1.4m
Around level meter
Testing position just below the central of the unit
Control valve
AD482MPERA
Octave band sound pressure dB
Limit of audible
continuous
noise
Octave band center frequency (Hz )
Octave band sound pressure level dB
Limit of audible
continuous
noise
Octave band center frequency (Hz)
AD 962MPERA
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