Worcester 24i boiler question

[baldyman26]

I have an old style Worcester 24i boiler installed. My red needle on the pressure guage is set to about 1 1/2 however the actual pressure needle usually runs at around 3 . Does anybody know if this is right, and if not how do I reduce the pressure in the system

 

[lor]

PANIC ITS ABOUT TO BLOW!!!!!!!!!
the pressure should normally reside around 1bar when cold to a max of 2 when rads are hot. check if the filling loop has been left open . then reduce the pressure from the drain off under the boiler or at a rad bleed nipple

 

[baldyman26]

The filling valve isn't open, how does it keep increasing, is that a fault, also where can I drain it and is it essential I do it as you can tell, I havn't a clue about boilers..

 

[Strachan]

Does the pressure read normal when cold? 1-1.5 bar. Then go up to 3 when on? Does water flow out the p.r.v outside? If all these are true it sounds like an expansion vessel problem. Might just need pumping up, or split membrane.

 

[ChrisR]

See "Boiler Pressure Problems" in the faq section.

 

[Slugbabydotcom]

If you get the feeling of chasing your tail with the pressure vessel thing its time to look into the possibilty of an internal leak in the secondary heat exchanger

 

[baldyman26]

Thanks for the advice everyone, I think I will call an engineer out, I am about as technical as a broken ruler... I had a look last night and the pressure went to 3 1/2 when everything was off, it seems to go down when the heating is on, but up when everything is off..