How to increase pressure on Ravenheat boiler

[Surreymummy74]

Hello,
We’ve got a rental property with a Ravenheat combi boiler. The pressure has dropped to zero and we are not sure how to increase it. I know it’s probably a combination of the taps pictured but not sure which. Any ideas?

Thanks

 

[muggles]

Nothing to do with the valves in the picture I'm afraid. You need to find the filling loop

 

[Surreymummy74]

Thank you - I’ll head over later and take a look - couldn’t see anything that looked like that yesterday. The previous tenants told me it was the red taps (they were in when the plumber came out last time it happened and were meant to write it down!)

 

[Surreymummy74]

Ok, think this could be it? Should the boiler be on or off when I turn the tap? Thanks in anticipation!

 

[Newboy]

The boiler should be cold and heating demand off

 

[Newboy]

Set pressure to a little over 1 bar

 

[dilalio]

More importantly: if repressurising is a regular necessity, then you have other issues which need investigation.

 

[Surreymummy74]

Thank you all for your help. How often is normal to have to repressurise a boiler? Thanks

 

[dilalio]

Thank you all for your help. How often is normal to have to repressurise a boiler? Thanks

Once or twice a year, 3 or 4 at a push.
But if every month then you are losing water (and inhibitor) elsewhere.

 

[Surreymummy74]

Great - thank you. I’ll monitor it and see if it happens again very soon.