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Been to a Genus 27 BFFI today no instructions and really struggling with it. Can anyone help?

It might be the pump on the boiler. Take case off turn the boiler on a put a screw driver to the pump and your ear to the other end and listen, does the pump actually run?

ok. And you say that the heating will only come on when the how water is required?

:oops: Yep sorry! If it does not state net input you must divide the gross input by 1.1.

Hahaha well preventions better than cure!

This may be down to the way in which the system is wired/designed. How many motorised valves if any are in the airing cupboard?

Come surface mounted. Showers in this day and age never seem to last! Fitting an enclosed shower could possibly give you a serious headache in the future.

what is the boiler pressure gauge reading at?

If the rads are full of air turning all others off will force the water to circulate through thoses rads, thus clearing any air. However, if the trv is stuck in a closed position you simply need to free off the pin in the valve. Take the head of the valve and give it a few taps then it should...

What boiler have you got?

I think the chap may be trying to do you over - dry. I have worked on hundreds of glowworm ultimates and never has a pump which is external to the boiler blown a board. Usually big components blow fuses. I think that i would ask him to fit the pump and then see what happens. Sure enough if the...

To calculate the size you need you must establish (as mentioned) the kilowattage of the appliance. So for instance if it were 20kW you would take 7kW off for adventitious air and times that sum by 5 to give you 65 cm2 free area you require. You will more than likely find that on the data badge...

The thermocouple is usually the culprit in theses situations however there are other possible problems. Such as where the burner comes out i would expect to see a seal, if this is missing or damaged strong draughts can blow the pilot out. Or if on the outside wall there are big gaps around the...

Ok well that bulbous thing that you turn the rad off with is a trv. Now what happens is they can shut off and then not re- open. There is a pin inside that operates up an down, opening and closing the valve. What you will find is that if you take the head off the valve the pin will be down and...

In truth that chap was probably the most consciencious of the 3. Nine times out of ten when switching from a conventional boiler to a combi the gas supply is not adequate. This is because when you initiate a call for hot water the boiler must fire on maximum capacity which is usually a minimum...

TRV is a thermostatic radiator valve.

I'm afraid you will have to drain system and change the 3 port body. As if you get heat out to the rads when there is no demand for heating then the valve is passing.

I had to work in a property only the other day where BG had installed the system. In that situation they had not supplied a 22mm vent pipe to pass over the feed and expansion tank. I informed the customer and they rang BG they said that it wasn't necessary as you have a cold feed which takes up...

Is there any literature you know of that has it written down in black and white? It is very difficult to get a definitive answer. The.0008 figure the corgi inspector gave me but alike you i thought it was .004