sealed

In a sealed multizone CH system, does it matter whether the pump is between the pressure vessel and the boiler or whether the pressure vessel is between the pump and the boiler? (On the hot side in all cases) I know it matters in an open vent system but not sure in a sealed system. Thanks in...

I currently have a Glow Worm Flexicom 24hx condensing boiler (13 years old) on the ground floor and a water tank and vented expansion tank in the loft. My home is a detached chalet style bungalow, ground floor and first floor with a small loft area above. It has 4 bedrooms with around 15...

Hi, About to embark on a refurb of the house including extension and wanted to get some views from you guys:- + Would you recommend moving to a sealed system (assuming budget is ok)? + If moving to a sealed system do i need to re-pipe the house? Is there a way to test the current pipes can...

The situation: Having recently found a leak in a micro-bore pipe, thanks to a plasterboard screw going right through it. I decided to fully drain the system during the repair and fill with a system cleaner to run for a few days and then drain and refill with inhibitor. The initial problem: Upon...