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Thanks very much again chaps. I don't know why the difference between the meter and the boiler is so big, but it is. The guy said that if it stayed at 16 that wouldn't be too much of a problem, but the fact that it drops to 14 when the hob and the hot water are on at the same time could cause...

cheers all. quite a few questions, but here goes pressure at the meter is 20-21 mb pressure at the boiler (hot water on) is 16 mb (he said 18 would be better) pressure at the boiler (hot water and hob on) pressure down to 14mb The chap said that what had probably happened was that a...

Thanks for the reply. Perhaps I should have added 'I am a total idiot who just uncritically believes what people tell him and believes that all tradespeople are hell-bent on ripping him off'. I know that I need a new boiler anyway at some point fairly soon, that was not news to me. The one...

Hi all, a central heating chap just came to look at our boiler and said that whilst it still worked the pressure in there, especially with other gas appliances running (eg the oven) is lower than he would like and that it would be advisable to fit a new boiler. He has recommended Veissmann...

hi, I hope someone is still watching this post. i pumped my vessel and the system is still losing pressure, which makes me think that the PV is leaking except no water comes through the pumping valve when I press it which makes it seem like the diaphragm is not punctured. Is there any other...

i can see that it would press the outside of the vessel on most of the sides, but what about where the bag meets the half of the PV which is filled with water? If I leave the drainage valve open when I pump, then the water, as I inflate the bag, is pushed out, so in principle I can keep on...

Thanks Shambolic, water not leaking out of the PRV as far as I can tell, though you are right that it did open when the vessel was empty (it was pretty scary watching the pressure get up to close to boom point!). i will check to see if the valve is leaking. I guess it is conceivable that I...

how did you detect the hole? and how much did it cost to get a new PV put in there if you don't mind me asking? There is no obvious hole in ours but i iwll have a look at as much of it as I can see when I get home...

Hey nickso, thanks very much for your help. Pumped it up and it worked a treat - only thing i was not sure about was how to be sure I had pumped out enough water. I basically kept on pumping until the guage went up to 1 bar then closed the release valve again - but I guess that this could...

Hi, someone has done a proper hack job on the ceiling in my new house under a light fitting that we neither need nor want. i want to fit one of those plates over the gaping hole they have left, but i don't know what to do with the wires. can anyone help please? thanks

Thanks again. last questions now, I promise. 1) I guess the system has to have been off for a while and has to be cool? 2) I can't find a pump with a pressure gauge. I suppose there is no way of doing it without being able to accurately measure the pressure though, is there? maybe I...

Thanks very much indeed for your help Nickso, I will give that a pop this evening. Should unscrewing those nuts drain the system right down to 0 bar plus the 'additional 10 litres or so' recommended by the FAQs? I guess to an extent it will depend on the size of the PV and how b ggered it is...

OK cool, thanks. So by the looks of it I need a bike pump and some way to drain the system. There is a big old tap under the kitchen radiator with an end of pipe protruding beyond the end of it - anyone have any idea if this is how I would drain it before re-pressurising (assuming it does not...

Hi, I have a worcester bosch (24CDi) boiler. i top it up to 1-1.5 bar when cold then heating goes on, spanks up to 3.5 bar, pressure release valve goes (as it should, it's set to 3 bar), then pressure steadily drops over next week or so. The pressure release valve appears not to keep on...