Baxi 105HE Repressurise

Lil306

Hi All,

I need to repressurise my boiler, but not 100% on which pipes I need to bleed/pressurise. I'm assuming I need a rigid or flexible filling loop to buy too, but I've taken a couple of photos of the pipework to the boiler to make it easier to identify

I haven't had central heating switched on for months as my house has been quite warm (only hot water) and the boiler worked fine before. So suspect I just need to pressurise again

The current boiler pressure is about 0.2bar atm

I've got a boiler manual but haven't read through it fully yet, I can deduct which pipes there are by process of elimination and seeing where the outlets/inlets come from and go to. I know some get hot too and they're thicker so these will be hot water outlets.

I'll post more tomorrow if there hasn't been a response. I'd prefer DIY first to keep it inline with MSE




What numbered taps would I need to use. Could anyone explain. I did try and search but came up with a few results, and thought pics would make it easier to identify.

southcoastrgi

4&5 you don't need to buy anything, open one valve then slowly open the other one & watch the pressure gauge (with the boiler not running) when the pressure gets to just above 1 bar turn them both off, job done

Lil306

southcoastrgi wrote: »

4&5 you don't need to buy anything, open one valve then slowly open the other one & watch the pressure gauge (with the boiler not running) when the pressure gets to just above 1 bar turn them both off, job done

Thanks

I did and a reply to your post this morning but my phone crashed on me I wanted to double check it

Repressurised this morning, pressure now sitting around 1.8bar and toasty radiators.

I'll leave the post up as the pics will probably help someone at a later date

booty40uk

You may need to bleed your upstairs radiators to let out any air now.

Lil306

Yeah I bled them all after I reprussurised starting from the highest point to the lowest point

I kinda messed up when I did it I reprussurised the boiler then put the hot water on and started bleeding the boiler whilst it was still pumping away so created another air lock

I guess when you bleed gas combo it's meant to be

1) turn off boiler and pressurise
2) bleed system
3) reprussurised I needed

The pressure currently is around 1 bar it dropped but hasn't moved ill keep an eye on it I at least know how to bleed the system now so can rebleed if necessary

Le_Kirk

1 bar is fine. It will rise slightly when the system (i.e. the water) is hot.

memphuklf

Also having issues with pressure on my baxi 105 he. Just moved intoa new home and seems water pressure is at 0.5 when not in use and around 1 when the hot tap is on. Unfortunately doesn't seem that I have the repressure hose present and looks like its been removed.
I have seen that you can buy these for around £15 and wondering if its straight forward to attach these?

Lil306

No clue does the underneath not look like mine does ?

memphuklf

Ilooks like it. Sorry can't post images as I'm a new member.

memphuklf

Don't have the filling loop like on your photo though. Would need a flexible filling loop but not sure how easy it would be to fit.

southcoastrgi

You should have two taps on the pipe work to the boiler (one on the cold in & one on the heating pipe, normally the right hand pipe), they would have a metal braided hose between them, if this hose is missing then you will need to buy a new filling loop this will come with two valves & the hose, you only need the hose so buy the cheapest one you can find