Is there something wrong with my boiler?

newfoundglory

I have a (1 year old) Ideal classic 30 combi boiler.

Boiler pressure rises from 1.1 bar (cold) to 2.1 bar when the heating is hot and has been running at temperature.

Some sites suggest it shouldn't rise more than 0.3 to 0.5 bar, others it shouldn't rise more than 1 bar.

Is this normal or not?
Thanks

Owain_Moneysaver

1 - 1.5 bar cold, 2.5 bar hot sounds okay to me. It does depend on the size (volume) of the system how much it will fluctuate.

fezster

Sounds ok. Depends on the volume of water and the temperature it's been heated to. So for example, if in winter you turn your boiler thermostat up, the max pressure will go up as well.

The relief valve does not open until 3 bar usually, so it's fine.

Over time, your expansion vessel will lose pressure, and will require pumping up also.

bris

Edit, sorry read it wrong. 2.5 bar would be pushing it a bit (as second post says 2.5) but 2.1 is fine.