LHD220Turbo

iTrader: (4)

evening;

my baxi combi boiler has 0 pressure showing on the gauge; so i think it needs topping up with water?

question is how do i do it? lots of taps on the underside but dont want to start fiddling

i dont want to do anything that gonna blow me up!

boiler in question: 105e baxi

cheers

GAZBEAMCOZ

at the bottom of the picture to the right is your check valve (long silver compression fitting.if you follow it down find the flexible stainless braided hose (filling loop ) which is connected to your heating return pipe. there should be a valve from the cold water pipe just turn that valve and watch the gauge .fill to 1.5 bar.
gaz

LHD220Turbo

iTrader: (4)

thanks mate; your a star; job done

s1 rst project

bang on the money all i would say is fill to 1 bar as it will rise to 1.5 bar when in use

eddie_od

iTrader: (1)

You set pressurised systems to 1.5 bar, common practice.

tabetha

1.5 bar, shit better let some out!!, how often should these need topping up, I have to do mine around every 2 months, drops 1.5 bar in that time.
tabetha

s1 rst project

learn something new all the time iv always been told to set it at around 1 or just over as it rises on fire but thanks for info

xr2wishy

iTrader: (2)

set to 1.5 bar on a pressurised system (makes it more efficient), and the fill is off the compression fitting on the right off the braided hose as said.

eddie_od

iTrader: (1)

wouldnt worry about it too much, boilers have a blow off valve which releases water if the system pressure gets over 3 bar.

they shouldnt really need topping up, you could have a very minor leak somewhere.

go into a plumbers merchant and ask for fernox leak sealer. get the one you can inject via the filling loop. with your system pressure at 0 inject the fernox into the system then top up boiler pressure to 1.5 bar. should cure your constant topping up. done this to my aunties system and its been good for the last year

tabetha

It's a rented place, so I'll nag the landlord, he's the tightest shit I've ever met, even with me and he's been me mate for 25 years!!
Bloody door handle fell off tonight, so more expense I have to try and get out of him, thanks for the advice I heard of fernox but thought it was a cleaner stuff for the system!!
tabetha

eddie_od

iTrader: (1)

they have a system cleanser aswell as all sorts of other stuff for central heating systems.

good luck with the landlord, never met one that likes parting with cash.

markk

iTrader: (2)

i can see one of your leaks on the pic !

eddie_od

iTrader: (1)

yip, looks like water marks on the cold water inlet.

project rs

the 1.5 bar is with system of and cold will rise when warmed up

LHD220Turbo

iTrader: (4)

i did notice that too

to be honest i need to get it serviced ready for winter, so hopefully the plumber can sort it too

LHD220Turbo

iTrader: (4)

out of interest, what will it do if the boiler is used at 0 bar pressure, not sure how long it had been at zero as only pulled down the cover to look tonight - i still had hot water and the radiators were hot

only symtom i had was one of the radiators upstairs was warm'ish rather than hot

tabetha

I notice a massive difference in rad temps when the pressure drops on ours.
tabetha

turbo_3dr_tommy

nothing mate the boiler will simply lock out looks like you just caught in time, check that the rads dont need bleeding and recheck pressure afterwards

LHD220Turbo

iTrader: (4)

cheers; i think the rad in the bathroom needs bleeding as that one doesnt seem to get as hot as the others