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The indirect system prevents furring of the boiler, primary flow and return pipes, and hot water storage cylinder. The system is also employed in soft water districts when heating is combined with hot water supply, to prevent rusting of the cast iron radiators, which causes discolouration of the water to be drawn off.
1.1.00 The ‘HWA Design Guide for Stored Hot Water Solutions in Heat Networks 2018’ provides design guidance and advice for engineers who are looking to specify stored hot water solutions working within a heat network.
BSI Standards Publication Guide to the design, installation, testing and maintenance of services supplying water for domestic use within buildings and their curtilages -Complementary guidance to BS EN 806
Specification of particular requirements, test methods and labelling for hot water storage vessels designed primarily for indirect water heating using heat pumps. Version 5 : December 2021 . Foreword.
Centralised hot water systems • Indirect system • Separate circuit for the water drawn off at taps • Used in hard water areas to prevent scaling of boiler and pipes • Used when heating is combined with the system • It costs more than direct system but requires less maintenance • An expansion vessel in primary pipework to eliminate the
4 lis 2023 · hot and cold water systems and heating inside buildings are now the preferred solution for most domestic installations. Systems are available in crosslinked polyethylene (PE-X), polyethylene with raised temperature performance (PE-RT), polybutylene.
indirect system for hot water generation is shown in figure .6. The generation of hot water on a communal rather than on an individual basis may be provided by group or district heating schemes where large capacity boilers are remotely sited to provide heat generation. Such systems are consi dered in chapter 5.
