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by LouiseSJPP
Tue Nov 23, 2021 6:53 pm
Forum: Central Heating and Air conditioning and Ventilation Forum
Topic: Primary circuit or free-flowing volume, heat pump
Replies: 0
Views: 1270

Primary circuit or free-flowing volume, heat pump

I have had an air-source heat pump system installed. It interfaces to the existing central-heating system, replacing a boiler. At the interface, the installers placed a 12 litre low-loss header, creating primary and secondary pumped circuits. The heat pump spec calls for '80 litres of free-flowing v...
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