BS 4857-2:1978

This standard BS 4857-2:1978 Methods for testing and rating terminal reheat units for air distribution systems is classified in these ICS categories:

• 17.140.20 Noise emitted by machines and equipment
• 91.140.30 Ventilation and air-conditioning systems
• 97.100.01 Heating appliances in general

This Part of this British Standard deals with methods of acoustic testing and rating of terminal reheat units, defined in Part 1 of the standard, for:

1. static terminal attenuation;
2. sound generation, upstream and downstream of the unit;
3. radiation of sound from the casing.

Methods of testing and rating for static terminal attenuation; sound generation, upstream and downstream of the unit; radiation of sound from the casing.