Mend > Home Heating Systems

Boiler pressure?

Hi, I was unable to get central heating working with my Ferroli F30 boiler. The hot water seems to work to both taps and the shower. Out of curiosity, I tried twiddling around with a metallic loop pipe, when I heard a swooshing noise and the pressure gauge jumped from 1.7 bar to 3 bar. I was wondering if that is bad, and if yes, how do I get it back? Thanks...

Ashwin
September 2007

Ferroli Ferroli F30 Heating, Home Heating Systems Boiler Pressure Heating

3bar is a little high, i dont tend to put more than 1.5bar in boilers i work on.
Seeing as your hot water is ok, the fault wont be a main functional part but something specific to the CH.
Does the boiler try to run when you want heating on?

A Gas Man
September 2007

Ashwin,
My installation plumber told me to keep it at 1.8 to 2 bar so i suppose its a bit high.
I'm told that the boilers have a safty valve if they get too pressurised so possibly it's not unsafe yet.
To lower the pressure I know of two options,usually one of the lowest radiators might have a tap on underneath where you can drain a bit of water or bleed it through one of the radiator bleeding valves (messy option).
Hope this helps.
Moden ownwer

Modena Owner
September 2007