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Caleffi Idronics
Hydraulics N. 11

DOMESTIC WATER HEATING

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idronics cover 11

Almost every occupied building requires a source of safe domestic hot water. There are many ways to provide it. This issue of idronics™ begins with a brief history and overview of the most common methods and hardware for supplying domestic hot water.

Specific sections go on to discuss solar water heating subsystems, heat pump water heaters, indirect water heaters and greywater heat recovery.

Safety issues associated with prevention of scalding and avoidance of Legionella are also covered.

The issue concludes with a discussion of recirculating domestic hot water systems.

Answers are provided to questions such as:

  • At what temperature will Legionella bacteria die?
  • Can 125°F water cause skin to burn?
  • How should a hot water recirulation system be piped to prevent temperature creep?