Hot water system with more than one circuit - has common control which activates pump only in circuit where there is lesser heat demand

摘要

The hot water system includes a boiler in an indirect heating circuit connected to the flow is also directly coupled to a mixer valve for the purpose of temperature control. Pipework links thermostats, circulating pumps and the mixing valve to a common control. The control (4) activates intermittently, to different heat requirements of the various heating circuits, the circulation pump in the circuit in which there is a lesser heat requirement. USE/ADVANTAGE - Domestic hot water system. Avoids loss of energy due to the unnecessary operation of the pump.