Volkera Vibe boiler pressure?

BAO wrote: »

Hi all,

I've got a Volkera boiler with a pressure gauge at 0.

I've pulled tge place apart looking for the filling loop but to no avail.

Having read a few other boards on here and in other places it looks to be filled from the tank in the attic.

Have had a look but cant figure out which pipe is the one that fills from the tank

Will attach a pic if I can but does anyone have any ideas?

Cheers Kev

If the pressure gauge is 0 Bar then either the pressure gauge is defective or the Low Water Pressure Switch isn't locking out the boiler and is supposed to operate if the water pressure is < 0.5 Bar.
If its fed from a attic header tank then the pressure should still be 0.5 to 0.6 bar due to the head, there is normally two tanks in the attic, one for domestic/hot water cylinder supplies, the other smaller tank is the Feed & Expansion Tank, sometimes the cold feed & expansion pipes are joined together at the tank, if you have this system then there is normally a check valve fitted which allows make up water to the boiler/system but closes when the boiler fires up and the water starts expanding, the expansion is then taken up by a 8 litre expansion vessel fitted internally in the boiler casing.
If you have a fully pressurised system then you should have a flexible hose filling loop with isol valves somewhere, I have seen them tucked away in the hot press in two relations installations.