Are you visiting bsria.com from outside your region? Visit your regional site for more relevant services and pricing.
This test standard describes how to determine heat transfer capacity and other performance aspects of a heat interface unit (HIU) under standard conditions or application-specific conditions in a laboratory.
A heat interface unit (HIU) is a packaged set of components necessary to connect a consumer’s heating and/or hot water systems to the heat network.
This test standard describes how to determine heat transfer capacity and other performance aspects of an HIU under standard conditions or application-specific conditions in a laboratory. It applies to packaged HIUs (also known as consumer interface units, heat stations or hydraulic boards) that incorporate a heat exchanger.
The purpose of the test standard is to establish a common test methodology for the following:
Please not that some corrections were made to this standard on 18/05/2016. In section 4.3.4 on page 7, item 2 was changed to read “Pressure sensors shall be checked against a reference instrument before commencement of each series of tests and zero checked prior to testing each HIU.” Also in table 3 (Thermal capacity test conditions) on page 8, the primary inlet temperature for test condition 2 was changed from 80.0°C to 65.0°C. If you downloaded the guide before 18/05/2016, please download it again.