Heating control of domestic water supply system - comprises two separate circuits each incorporating pump

摘要

The heating control is for a domestic water storage tank. It is used in a system with a primary circuit between the water heater and a heat exchanger, and a secondary circuit between the exchanger and the water storage tank. A loading pump is fitted in both circuits, and both pumps (6,11) control the variable output of boiler and exchanger. USE/ADVANTAGE - Heating control for domestic hot water system. The pumps start only when adequate temp. is reached in the boiler and the exchanger respectively.