Please help!!!!!!!!!!!!!!

[redmikey]

Hi, i have just brought a flat with a combie boiler, the water pressure gauge was on about 0.5 but the boiler states it needs to be at least 1, i have bleed the radiators but all that did was send the gauge lower? does anyone no how to increase the water pressure?
thought id ask before getting a no doubt expensive pro round to have a butchers?
any advice will be greatfully recieved!!

[Nicholas Blair]

Should be a valve on a thick diameter pipe under the boiler. this is the mains feed.

Ensure the system is off and turn the valve - you should hear the water filling up the system.

Let it run for 10 secs or so and watch the gauge rise. Repat until you have enough pressure/bar in the system.

[redmikey]

cheers mate, i'll definitely give it ago!!

[johnFairfield]

The valve is usually one with a lever on that you have to turn throu' 90deg

[paulie-mafia]

It's the big valve located where a copper pipe meets a braided hose.

[matchless]

yes, it's called a filling loop and is supposed to be disconnected after pressurising but no one ever does

>> Edited by matchless on Thursday 18th May 23:01

[sleep envy]

Nicholas Blair said:

Ensure the system is off and turn the valve

Why is this?? I always leave mine switched on.

There should be 2 valves, one either side of the braided hose. Make sure you close bothe of the after to seal the system

[Nicholas Blair]

sleep envy said:

Nicholas Blair said: Ensure the system is off and turn the valve Why is this?? I always leave mine switched on. There should be 2 valves, one either side of the braided hose. Make sure you close bothe of the after to seal the system

No idea - that's what th eplumber told me!

[motco]

redmikey said:

Hi, i have just brought a flat

[pedant]Where was it before?[/pedant]

[billsnemesis]

My combi boiler has a plastic key thingy that you insert somewhere underneath to open a valve allowing water in. You then have to open two stop cocks and when we first got it the needle stuck so we ended up putting 2.5 bar into it before it suddenly registered correctly. It's a wonder the radiators didn't burst!

It was such a pain that everytime I did it I had to read the instruction manual

[ferg]

Firstly half a bar is certainly acceptable. So long as the boiler has some pressure it is unlikely to cause a problem.
Secondly don't worry about whether the boiler is on or off when you open the filling loop. So long as there is some water pressure you can run the boiler.

[ferg]

billsnemesis said:

.......we ended up putting 2.5 bar into it before it suddenly registered correctly. It's a wonder the radiators didn't burst!

The bolier will be fitted with a pressure relief which will blow at 3Bar (probably) 2.5 is no problem.

[speedychrissie]

i was going to ask the very same question at some point as my boiler pressure drops to about 0.5Bar if i turn it down low for a while, but now i dont have to!

isnt PH great!

[Ferg]

Providing you don't have to keep topping it up then it's OK Chris. Pressure will obviously change with temperature. If you keep having to top up there is a leak somewhere. Leaving this is a 'bad thing' because the continual addition of fresh water will rust stuff....... radiators mainly. And the pump.

If anyone has a combi or other sealed system boiler with an annoyingly small leak that won't be found, there are internal leak sealers about, Fernox LS-I for example.