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If you are thinking of adding solar neither of these boilers are solar compatible, solar compatible combi's need to be able to take pre-heated water, Viessmann boilers can and Eco Hometec boilers can, I would reconsider the combi option as you would require an unvented cylinder to be fitted to...

Who ****ing cares

From searches that I have done this appears to be a Vaillant model for the Dutch market.

the Vaillant Vantage instruction manual shows a pre-charge pressure of 4 bar, what is the water pressure at the cylinder after the PRV and yes a car foot pump should provide adequare pressure, ________________________ moderator email address removed (these can be shown in your profile)

You do not need to let the air out, just top the vessel up, have you pushed the scrader valve, to see if you get any air out, just a quick push, if you get air it may just need topping up, if you get water then the vessel has failed and will need replacing you can do this test without draining...

I know how large the vessel is DP, I meant it is small compared to the cylinder, it wont necsessarly be on top of the cylinder, it can be mounted remotely from the connection on the PRV, so it could be tucked behind the cylinder, I have found a few like that in the past, not good for maintenance

You do not need a vaillant specialist, this is a basic plumbing task, it seems to me you must of had three idiots, the expansion vessel is as obvious as the nose on your face, I cover your area but I am booked up at the moment, the vessel should be a white or blue metal small cylindrical shaped...

First point snapper01, there is no such thing as Corgi regs, Corgi do not make the regs. Second, why did you say that you were new to the area and in the next sentence say that you have been running a CO detector in the room for 3 years

I think you will find that there are only 18 deaths a year that involve gas safety, put that next to the 28,000 that will die this winter because of fuel poverty, puts things into perspective.

He is refering to the building regulation that states that all newly installed gas appliances must be notified to the local building control, this building regulation IS law of the land, registered corgi installers have to inform corgi of their installations as a condition of registration, corgi...

Good point John, the parts you have bought will be WRc approved, I doubt the stuff screwfix sell would be

About the height of the Empire State Building might do it

You can not have a vented mains fed cylinder, a mains fed cylinder is a closed system, with expansion vessel and safety devices, if you are having a vented cylinder it has to be tank fed, there is no other way.

It's an expansion vessel, it should have air in it, it's purpose is to absorb the water expansion as it heats, the pressure will normally be about 0.5 bar, but do not try and take a reading with the system pressurised, this will give a false reading, the system needs to be empty to get an...

Try looking at GAH heating www.gah.co.uk

Locktite 55 best invention ever

Combination boiler, that is the problem, combination boilers should be used in flats and small houses, they are designed to be installed close to the outlets that they will supply, they are over rated in my opinion.

I find tha amusing, how can you mix Imperial and Metric measurements

Drain 500 l in under 10 minutes, I don't think so, if showers were capable of this we would have to heat a reservoir to keep up with demand

No, Just install a good quality cylinder with the correct capacity and a fast recovery coil.