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immediate downloadReleased: 1997-09-15
BS 4856-4:1997
Methods for testing and rating fan coil units, unit heaters and unit coolers Determination of sound power levels of fan coil units, unit heaters and unit coolers using reverberating rooms
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| Standard number: | BS 4856-4:1997 |
| Pages: | 14 |
| Released: | 1997-09-15 |
| ISBN: | 0 580 27607 4 |
| Status: | Standard |
DESCRIPTION
BS 4856-4:1997
This standard BS 4856-4:1997 Methods for testing and rating fan coil units, unit heaters and unit coolers is classified in these ICS categories:
- 91.140.30 Ventilation and air-conditioning systems
- 97.100.01 Heating appliances in general
- 17.140.20 Noise emitted by machines and equipment
This British Standard establishes general rules for acoustic testing of fan coil units, unit heaters and unit coolers, in order to determine sound power levels. This standard is applicable to equipment operating under steady state conditions. It applies to sources that produce steady broad-band noise, and to sources that may produce significant discrete frequency components or narrow band noises.