Recent content by golightlygl

@newgasinstaller Yes, the pressure rises from 1.0 to 1.6 when the boiler is heating @simond: We have a separate break tank and pump pushing 3b cold supply into the loft so that isn't the problem. Curious, eh? Unfortunately, the installer specified the Quinta Pro, no choice by me. I...

It's the boiler pressure that goes from 1.0 to 1.5. The expansion vessel itself doesn't have a gauge, but the PRV in line with it goes from 1.1 to 1.2 when boiler is firing.

When the boiler is at rest it is showing pressure of 1.0. When it is firing it is showing 1.5b. Does that point even more to the expansion vessel?

@Simon What do you mean it doesn't look very commercial. Is this because the installers put in a Quinta pro 45? If so, I have no idea why they chose that heater. Another one of the mysteries of this installation?

OK, I have double checked and tried to label everything. You're right (of course). The expansion vessel is on the primary return. So it looks like this could be the culprit for the pressure changes which makes sense if it goes from 1.1 to 1.6 and then back down again (currently static at...

Dan, This is a Megaflo: I understood the expansion capability was built in to the tank with an air gap? I had assumed the expansion vessel was for the secondary circulation. If I understand correctly, this circuit is to allow the hot water to be circulated around the system so that there is...

@Dan_Robinson: pictures attached; please let me know if there's more specific things you need. @newgasinstaller: The installers were a professional G3 qualified company and Remaha themselves commissioned the boiler. But that doesn't necessarily means that all is correctly done! I have put...

Note that the automatic filling loop is close as we don't want it working until we can understand where the pressure loss is coming from