Hitachi YUTAKI S80 Series - Sound Pressure Level for Outdoor Unit; Considerations

5. Acoustic characteristic curves
TCGB0075 rev.0 - 11/2012
80
5.1 Sound pressure level for outdoor unit
5.1.1 Considerations
1 Distance of the unit from the measuring point: At 1 meter from the unit’s front surface; 1,5 meter from oor level.
2 The data is measured in an anechoic chamber, so reected sound should be taken into consideration when installing
the unit.
3 The sound measured with the curve A shown in dB(A) represents the attenuation in function of frequency as perceived
by the human ear.
4 Reference acoustic pressure 0dB=20μPa