Airedale Ultima Compact FreeCool 30kW - 450kW - Manual (Page 37)

Chillers ULTIMA COMPACT FREECOOL
Chillers
37
Technical Manual : 6259576 V1.2.0_02__2013
Sound Data
MEASUREMENT OF
SOUND DATA All sound data quoted has been measured in the third-octave band limited values, using
a Real Time Analyser calibrated sound intensity meter in accordance with
BS EN ISO9614 Part 1 : 1995. The Global sound data quoted is valid for noise emitted in
the horizontal plane in all directions.
All Sound Power Levels quoted are calculated from measured sound intensity according
to BS EN ISO9614 Part 1 : 1995.
Sound Pressure Levels are calculated from sound power using the expanded
parallelepiped method according to BS EN ISO11203 : 1996.
SOUND DIRECTIVITY The Global sound measurements quoted in the following tables do not incorporate any
directivity or denote any sound level heard at any given position surrounding the chiller,
rather they represent the total sound level radiating from the chiller in all directions in
the horizontal plane from source.
Using the adjustment factors from the map below, specific directional sound power levels
can be derived from the global sound power data.
- 11.0
- 4.0
- 11.0
- 4.0
Example – UCFC150DSQ-4/1, Sound Power of
78dB(A) =