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Yeah those birschs are a nightmare. As is your description of the problem. I am guessing here that your boiler is overheating on hot water demand. But you haven't given nearly enough information to have a proper diagnosis!

pretty unclear what your saying here? is water drippng from the discharge pipework?

thought your heating wasn't working??!!

Sorry didnt read that properly! You'll have to link terminals 1 & 2!

There is a link on the main terminal block between 1 & 2. You need to remove this and wire your Switched live to term 1.

If it worked when you linked it out there is no reason for it not to work with the new clock. My money is on it being wired incorrectly.

What credit crunch? Never made more money, clearing a grand a week! Mind you i have had to move into the building services sector and get my hands a bit dirtier than i would like!

I wouldn't do it any other way than with a dunsley.

how do u plan on shutting off the water when the cistern is full? :lol: :lol: :lol: No need to arsey now, looks like someone has their work cut out!

How long does the boiler stay lit for before it goes out. Have you checked the coil pipework to see if it is getting hot before the boiler goes out? Have you bled the pump? The main flame going out indicated demand satifisied. The thermocouple does not heat up per se, it is a safety device.

My assessor was sneaking about like a creeping jesus. Turned the room stat down on the mexico i was servicing without my noticing! Thought I was going mad!

Just to add this is not a job many installers would relish so prepare yourself for some ridiculous quotes!

Easiest way to do this is with a dunsley neutraliser. In principle the requirement to link two or more boilers into one heating system is relatively simple to arrange. In practice there are physical difficulties, possible dangers and in many cases high financial cost. The difficulties lie...

:shock:

I use a bit of half inch hep/ hose and syphon it out, if the syphon is fooked! Yes i would say it was a a bit of a fiddle if you were not used to plumbing. Expect to pay a tenner for a syphon, an hours work (40 quid first hour where I am) plus VAT.

pipes a bit too close to that flue is it not?!

Get 3 quotes from local installers. Slag them off for being money grabbing cowboys. Get in British Gas. Eat hat.

Ah! Its a domestic hw expansion vessel. This vessel is a smaller version of the heating expansion vessel. But it is charged to 2 bar. This vessel absorbs any increase in pressure after the hot water tap is closed after use. This prevents damage to pipe work and stops water hammering.

You are over complicating! The system should be treated as one. You will get a false reading from barrier pipe. Assuming you are balancing a system with a condensing boiler, you could clap on your thermos to the copper flow and returns into the boiler and balance until you get a 20 degree...

Wont happen im afraid! the system needs to be vented if using a solid fuel back boiler as there is no effective way of controlling the temperature of the water.