Adding booster pump to combi boiler?
Hi, My boiler is in a house with a well so the water pressure is just less than 1 bar, and my combi boiler needs between 1 and 1.5 bar. The boiler has a small tap which you have to open when you want to increase the pressure, so if I add a booster pump I assume I would have to leave that tap open - but then the water for the radiators and the tap hot water would be mixed?
Basically my questions are:
1. Can I add the booster pump and leave the refill tap open (because closing the tap would prevent automatic pressure adjustment from the booster)
2. Is it also necessary to add (apart from the booster) a water pressure regulator (with bar clock) to maintain the pressure at a constant 1.5 bar?