Frequent slow pressure rise on Ravenheat 820/20(T)

[spooky6]

Hi everyone.

I have a Ravenheat 820/20(T) Combi-boiler. Recently noticed that everytime the CH has been on and the system then cools, the needle on the water pressure gauge never drops to it's original reading. Roughly about 0.1 bar extra is added. i.e. this morning the boiler began at 1.2 bar and when CH turned off / cooled, the needle rested on 1.3 bar. Obviously with the gradual build up of pressure I'm forced to release the extra manually through the PRV. Any ideas what could be causing this?

Thanks for any help / advice.

 

[gas4you]

Filling loop letting by, plate heat exchanger gone, expansion vessel needs re-charging?

 

[corgiman]

Filling loop letting by, plate heat exchanger gone, expansion vessel needs re-charging?

dont forget the pressure pixies gas

their buggers to over pressurizing boilers on the sneek

I hate them almost as much as the "you just put your pipe slice down and we are going to hide it " goblins

 

[gas4you]

Filling loop letting by, plate heat exchanger gone, expansion vessel needs re-charging?

dont forget the pressure pixies gas

their b*****r to over pressurizing boilers on the sneek

I hate them almost as much as the "you just put your pipe slice down and we are going to hide it " goblins

I thought I was the only one they 'attacked' several times a day

 

[corgiman]

Filling loop letting by, plate heat exchanger gone, expansion vessel needs re-charging?

dont forget the pressure pixies gas

their b*****r to over pressurizing boilers on the sneek

I hate them almost as much as the "you just put your pipe slice down and we are going to hide it " goblins

I thought I was the only one they 'attacked' several times a day

Ahhh you must have an infestation too.

feels like I have 1000's of the devils nicking my gear

 

[gas4you]

They also seem to have a penchant for wire wool, flux brushes and pencils

 

[corgiman]

They also seem to have a penchant for wire wool, flux brushes and pencils

dont they ever

I must spend a good hour looking for stuff that i just put DOWN!!!