Repressurise Boiler

Arun Thomas

Anyone out there know how to repressureise the boiler .I dont know what kind of heating system.I have.I.have a red coloured boiler inside a small door in kitchen.Its gone down to 0 .how to repressurise it.Heating is not working

Former Former Former

There should be a tap or valve somewhere on the boiler which lets more water into it. It's just a matter of finding the tap, opening it and letting enough water in to bring the dial back to 1 or 1.5 and shutting it off again.

You may need to bleed some rads but would advise to get it serviced afterwards.

DublinDilbert

https://www.boards.ie/discussion/2058223704/repressurise-boiler

Post a picture of your boiler and how it is configured and people here should be able to tell you how to repressurize it.

Arun Thomas

DublinDilbert

So the large Red object is your pressure vessel, which in normal operation should be 50% water 50% air and allows expansion in the system as the water heats. The valve with the pressure gauge and the other valve under it look like they could be used to re-pressurise the system. Can you post another picture looking at these from the front?

Arun Thomas

The picture i posted is what i see when i open the door

Arun Thomas

https://www.boards.ie/discussion/comment/118355246#Comment_118355246

The picture I posted is what i see when i open that door..

DublinDilbert

The top valve with the gauge is an auto-filling valve that is meant to top up your heating to the desired pressure automatically, it also usually contains a pressure reducing valve. This top valve could be "stuck", so try give it a couple of taps. I believe the bottom valve is a shut off valve on the incoming water, this could also be in the "off" position, so try and turn this "on".

Wearb

The red leaver for that valve is on that board on the wall.

cullenswood

Can I jump aboard this thread. I have the same problem, I bled some rads in the attic and the pressure on the boiler has now reduced. I thought I remember being able to increase this from the hotpress upstairs by slightly moving the screw that the arrow is pointing to below. I could then hear the water rushing through until the pressure went up. Now for some reason I hear nothing when I turn that screw. Maybe I am looking in the wrong place? Can anyone guide me please

The J Stands for Jay

https://www.boards.ie/discussion/comment/118359577#Comment_118359577

You might also need to open the valve at the other end of the braided hose.

cullenswood

https://www.boards.ie/discussion/comment/118359805#Comment_118359805

Thanks a mill for the reply. Is that the black thing at the top of it? I can't seem to get that to move, but don't want to put too much force on it in case its not supposed to

The J Stands for Jay

https://www.boards.ie/discussion/comment/118359889#Comment_118359889

That's the one. The scree on the other side would've originally had one of those black bits on it.

cullenswood

https://www.boards.ie/discussion/comment/118359945#Comment_118359945

Thanks. I can't get the black bit on the top to move at all? Even with a bit of force. There is a small screw in it, that I am assuming is just holding the handle-y lever type thing in, but should I be going near that.

The J Stands for Jay

https://www.boards.ie/discussion/comment/118359972#Comment_118359972

I'm not a plumber, so I couldn't say. My knowledge of those valves is just from having a faulty pressure vessel and needing to top up the system pressure often until I could get it fixed.

Hopefully someone knowledgeable will be along soon to tell you.

John.G

https://www.boards.ie/discussion/comment/118359972#Comment_118359972

Remove the handle and use a adjustable spanner to turn it 90 deg anti clockwise.

Wearb

What is that black knob beneath that leaver on that valve?

cullenswood

https://www.boards.ie/discussion/comment/118360138#Comment_118360138

I have no idea

cnocbui

Could the black knob be a lock to prevent the cock handle being turned? Sprung loaded, pull down?

Jonathan222

Similar type query looking for any help. Noticed one of the rads (top floor of three story) was not very warm. Bled the rad and nothing but air came out until it stop fizzing air and I closed the bleed valve. Went down re-pressurised the boiler and bled same rad again, all air no water came out. Re-pressurised the boiler again. Heating comes on and all rads and water heat up nice and hot including the top floor one now, so I have not tried to bleed again. I have noticed now though that once the boiler is off and gone cold, the pressure is dropping day by day, so I may have to top it up every week. No drips coming from any rads so no idea what could be happening, if anyone can suggest anything? Thanks

ongarite

If you have a gas boiler which it sounds like you have, the expansion vessel could be faulty.

They can be pumped up or pressure checked with bike pump.

Jonathan222

https://www.boards.ie/discussion/comment/118460215#Comment_118460215

Thanks for that. Yes, sorry, gas boiler. Is the expansion vessel the value I use to release pressure or something else and is it something a Joe soap like me should try to fix or get an engineer in?

cnocbui

https://www.boards.ie/discussion/comment/118460736#Comment_118460736

This is just the first I clicked on - many others should be in the playlist.

https://www.youtube.com/watch?v=hpcAJ5b7UDg