Having read a few posts from here & elsewhere, I was looking for advice on here, that I appreciate may need professional help in due course, even though I'm a tight Yorkshire bloke...
I have the above boiler and the pressure gauge had dropped right to the bottom at the weekend. I topped it up using the filling loop to what was reading between 1 & 1.5 bar and as soon as I fired the boiler up, it started leaking from the pipework in the boiler somewhere.
Having done a few things suggested (bled the rads etc.) I then had the pressure reading at around 1 bar (when cold), which seems to be correct. The HW functions OK, nothing to speak of in the way of leaks etc. But having fired up the CH to see if the pressure gauge & whatever was causing the leak had stabilised the water started running out again. The Q's I have, if there's someone can offer advice;
1. Does this appear like a classic case of the PRV failing & needing replacing?
2. Is it possible that with the gauge being at total zero (i.e. in the 6 o clock position), it was actually the gauge that was reading incorrectly at that point and maybe there was 0.5 - 1.0 bar in the system? By me then using the filling loop to top it up, it appears to have taken me over the 2.0 bar threshold into the red zone (which was when it started leaking)
Or put another way, have I over-pressurised this & caused the PRV (or something else to fail)?
If it helps any further, as it stands, HW is fine, both in the tank & the couple of taps that are on-demand. It does appear to be linked to things over pressurising once I put the CH on. At present I've switched off the CH & the boiler has returned to just below 1.0 bar of pressure & the leaking has stopped. Also I've noted that the needle on the pressure gauge has a very slight wobble as it's sat at 1.0 bar. Nothing major, but would expect the needle to remain static once the pressure has settled. Not sure if that wobble indicates something related to the PRV or just something that I can ignore.
Thanks in advance for any replies & apologies for the long winded note...
I have the above boiler and the pressure gauge had dropped right to the bottom at the weekend. I topped it up using the filling loop to what was reading between 1 & 1.5 bar and as soon as I fired the boiler up, it started leaking from the pipework in the boiler somewhere.
Having done a few things suggested (bled the rads etc.) I then had the pressure reading at around 1 bar (when cold), which seems to be correct. The HW functions OK, nothing to speak of in the way of leaks etc. But having fired up the CH to see if the pressure gauge & whatever was causing the leak had stabilised the water started running out again. The Q's I have, if there's someone can offer advice;
1. Does this appear like a classic case of the PRV failing & needing replacing?
2. Is it possible that with the gauge being at total zero (i.e. in the 6 o clock position), it was actually the gauge that was reading incorrectly at that point and maybe there was 0.5 - 1.0 bar in the system? By me then using the filling loop to top it up, it appears to have taken me over the 2.0 bar threshold into the red zone (which was when it started leaking)
Or put another way, have I over-pressurised this & caused the PRV (or something else to fail)?
If it helps any further, as it stands, HW is fine, both in the tank & the couple of taps that are on-demand. It does appear to be linked to things over pressurising once I put the CH on. At present I've switched off the CH & the boiler has returned to just below 1.0 bar of pressure & the leaking has stopped. Also I've noted that the needle on the pressure gauge has a very slight wobble as it's sat at 1.0 bar. Nothing major, but would expect the needle to remain static once the pressure has settled. Not sure if that wobble indicates something related to the PRV or just something that I can ignore.
Thanks in advance for any replies & apologies for the long winded note...
