Hi,
I have an old and tired single pipe CH system which I propose to replace with a plastic feed and return system.
The pump will have to be several metres from the boiler. I have two questions:
1: Should the pump be pulling from the boiler and pushing water along the feed to the radiators?
2: Where should the cold water feed and vent pipes connect, in relation to the pump? I've heard they should be 150mm apart, and am unsure which should come first along the flow.
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