BS 4856-4:1997
Current
The latest, up-to-date edition.
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
Hardcopy , PDF
English
15-09-1997
Committees responsible
Foreword
Introduction
Method
1 Scope
2 Normative references
3 Definitions
4 Test facility, instrumentation and procedures
5 Installation and operation of equipment to be tested
6 Information to be reported
Annex
A (informative) Bibliography
Tables
1 Acoustic test requirements
2 Uncertainty in determining sound power levels
Figures
1 Typical test installation for a wall-mounted unit
2 Typical test installation for a ducted unit
3 Typical test installation for the open inlet and case
radiated noise test
4 Typical test installation for the case radiated noise test
List of references
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