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it means scaled up heat exchanger, or sludged up, (depending on type) incorrect flow rate through combi boiler or gas rate incorrectly. Even a faulty thermistor could cause it. the hot water side of the combi has a thermostat/temerature sensor but will not reach this temperature and then cut...

have you got 2 tanks in your loft, a smaller one and a bigger one? if so is the smaller one higher than the bigger one??

the original bath had no battens but the feet were not screwed to the flloe at all, and no wall brackets were used, bath before was same as this, steel. pipes go under this floor so don't want to go through floor ! maybe a design fault of bath ..... it's only a tiny movement really

will this secure the bath more then and stop the little bit of give it has in the corner edge by the tap end?? other end is fine though.

New bath fitted in my bathroom this afternoon, steel bath (white). Brackets screwed to wall (length side only as front and back ends are to wall/wooden cupbaord as before) and bath secure, bath legs (no middleleg with this bath) fitted OK and 2 planks of wood also used to spread the weight as...

once again the black police force, etc DOES make it racist, as it prevents white people from entering, much like black people were moaning about not being allowed to join the BNP. Talking about Nazi's/Facists - isn't the 1st sign of facism not allowing people free speach and to have...

what are you on about. You haven't answered my question though have you, just like a Labour politician there!!

facism starts when people (groups, etc) prevent other people from having their opinion, say and right to speak (like hitler did) ...... IMO jack straw and the rest of the panel including dimbledby are as much facists as they were claiming nick griffin and his bnp to be. also, the thugs...

What I find RACIST is that there is a black policeforce and muslim police force in the UK and black music awards and baclk newspresenter awards. If there was a caucasian award there would be a right stink and be branded as RACIST!! This gets people's back right up. The reason IMO why BNP...

i might just get a gas safe reg installer in to do it now as he's gonna be in to do all the tightness testing before and comissioning it after as well. would the boiler need 22mm from the tee (which is from the meter and goes off to the fire and boiler) or just close to appliance, ie...

i was just querying. i know there should be a 1mbar pressure drop MAX from meter outlet to appliance inlet. but as old boiler was in 15mm and working fine for years just qondered if i needed to re-pipe all from meter or just from tee or just at boiler connection point.

Hi I am thinking of hanging the jig/connecting the flue and piping up myself and getting it commissioned by a gas safe engineer as by law. i believe gas pipe sizing is done in sections, eg from meter to 1st tee and then from tee to boiler, so 2 sections in my case.

I have an old potterton wall hung boiler which has a gas pipe connection in 15mm diameter (copper). I am thinking of upgrading to a new boiler but all new boilers seem to have a 22mm connection for the gas supply. Does this mean the whole gas pipe from the branch conenction will have to be...

Hi all I am going to slacken a nut at my hot water cylinder (primary flow connection) to try and shift some air that has made its way into the system and I can seem to ****. Have tried venting everything!! I have read that this is OK on this site, but if i do this when tre-tightening...

x200 - for scale?? will this prevent boiler heat exchanger noises that may happen over time, if fresh water is introduced into the system over years, eg due to drain down/repairs? also will it prevent the heat exchanger loosing efficiency??

ok so to clarify, drain the x400 from the system - re-fill system normally. circulate the system for about 10 mins. then drain the system again, and if water looks ok, re-fill last time with x100.? thanks for your help seco.

seco, than you for your help. daft question but how do i flush through with cold water .... just leave the drain off open??? (do i let in run until it runs clear)?

ok, thanks. so just drain the x400 out then re-fill whilst adding x100... is the neutraliser required only for fernox actually ??...

Hi everyone. I have just given my ch and hw primary system a clean (i used X400 from sentionel in the carton). It is coming out today, and then i want to add corrosion inhibitor (x100). Is this ok to put straight into the feed tank after the x400 has been drained, as I have heard that a...

Are they all of the programmable type? Also, what does it mean when they have voltage free contacts?? Does it mean it requires a battery to work? If you buy one and use it with a combination boiler, are they easy to install? Thanks for helping.