boiler not reprressing

[endisforever]

i have a baxi he80

when the boiler is off its sits below .5 bar.

hot water and heating do work and when switched on the pressure rises to about 1.5 bar.

i have tried repressuring using the filling loop but its dosent seem to have any effect on it at all just stays below a bar never getting more than .5 when the boiler is off.

also we have the heating on full on the dial but the raditors dont seem to get very hot to the touch you can easyily leave your hand on them without having to remove it becuase it gets to hot.

any one got any ideas.

 

[petit_pablo]

Check relief pipe for dripping outside. Most likely place that your pressure is going.

Chances are the expansion vessel is in need of recharging and the prv replacing.

 

[endisforever]

i dont think there is any dripping

i will chack if there is whats the issue??

also how do you charge the vessel is it a plumbers job or can it be diy

 

[Whitespirit66]

When you open the filling loop, can you hear water going in? Does your loop have 2 knobs? Are you opening both?

 

[Axel]

Fill the system when it is cold, not hot. 1bar colp might reach 1.5 bar when hot. Maybe your mains water pressure barely reaches 1 bar on the floor level your boiler is on. Try filling it at 3am when the mains water pressure is usually higher.

 

[picasso]

and turn up the dial on the front of the boiler if you want the rads to be hotter.

 

[Whitespirit66]

also we have the heating on full on the dial but the raditors dont seem to get very hot

 

[endisforever]

When you open the filling loop, can you hear water going in? Does your loop have 2 knobs? Are you opening both?

there is just one knob and water is coming through its not got much pressure to the water though doesnt blast out

i know this as i turned the knob with the loop off to make sure it was working.

so what about the expansion vessel easy to refill??

 

[picasso]

also we have the heating on full on the dial but the raditors dont seem to get very hot

thermostat dial or boiler stat ?

 

[endisforever]

also we have the heating on full on the dial but the raditors dont seem to get very hot

thermostat dial or boiler stat ?

its right up on the boiler

we dont have a separate thermastat

 

[picasso]

in that case I unconditianly surrender

 

[Whitespirit66]

Could have gone either way.

 

[endisforever]

right seems like i fixed it

i got this guide to re charging the expansion vessel
//www.diynot.com/forums/viewtopic.php?t=37170

went and bought a pump with a gauge and the pressure is now just over a 1bar when not in use and just over 2 when on.

so it looks like the vessel did need a recharge.