Combi pressure

[James123456789]

Hi

I removed the radiator from our combi system to have the wall plastered behind. The system was then filled and radiators bled.

The water pressure was raised the the system to 1.2 bar using the filling loop which was then removed. Switched the system on to test and all radiators got hot and the system pressure went up to 2.5 bar

Checked this morning and the pressure is sat at 1.5 bar, 0.3 higher than the cold pressure which I set yesterday.

Any ideas!?

 

[nortonj]

Check expansion vessel. Find it in the faq.

 

[James123456789]

Expansion vessel looks good, charged to 1 bar as per recommended pressure and no water comes out when pressing the valve.

The pressure increases when running, but all seems to be fine. It's just odd that it the pressure is still 1.5 bar when cold.

 

[45yearsagasman]

How did you check the EV pressure?

 

[muggles]

You need to check the EV pressure with zero pressure in the CH system or you'll get a false reading

 

[James123456789]

Thanks all