Boiler pressure

S28382

Hi Folks my boiler pressure stays below 1bar when i have the heating on but the house heats up no problems just like it did when the pressure was reading 2bar. Im kinda figuring that it shouldnt be reading that low.

Anyone have any ideas as to what could be the reason for the drop in pressure

S28382

S28382 wrote: »

Hi Folks my boiler pressure stays below 1bar when i have the heating on but the house heats up no problems just like it did when the pressure was reading 2bar. Im kinda figuring that it shouldnt be reading that low.

Anyone have any ideas as to what could be the reason for the drop in pressure

All sealed heating systems lose pressure as they leak microscopically, it is not unusual to have to replenish the system water once or twice a year.

I would keep a note of anytime you have refilled the system from the filling loop(it's the time taken with pressure loss that can indicate a problem), I would refill to 1 1/2 bar and I would take my readings with the system cold and the boiler off to get the true reading.

S28382

Cheers for that Gary ill give that a look at first and hopefully it will be ok.

Good plot

My boiler reads 1 bar when not in use but when the heatings on it goes up to 3.5 nearly 4 bar. I do fill it up with the filling loop maybe twice a year as the pressure drops. I don't know much about plumbing but should I call a plumber or use the release valve at the boiler to release some pressure. The house is only a couple of years old never had a problem before just something I noticed on the boiler recently?

Any info
Cheers

shane0007

Your expansion vessel is either deflated or has a split diaphragm.
You will need to call out an RGI to resolve.