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OK I'll have a look at that. Definitely some sludge I need to remove by hand when I go back up. Also need to locate the bleed valve on cylinder coil. Thanks for your help on this. It's hugely appreciated after my error

Hi. Thanks for your help. See pictures attached. The bigger tank is empty and only seems to be an overflow of the smaller. There is one pipe for water in, attached to the ball float, one pipe at the bottom going out.

Hi. Thanks for the reply. Attached is a photo of the loft. I didn't realise this was active and thought it had been decommissioned years ago and left because of the asbestos lining. (that's why we don't go near it) there is low level water in there and a ball float.

Here is the photos of my setup. The pressure relief valve is what I was opening yesterday. Do i keep doing this and the radiators?

I can't see a filling loop by the boiler. I have an expansion valve external next to the unvented cylinder. However no pressure gauge on this. In fact I can't see one at all!! Would there be a pressure gauge behind the boiler cover?

Also what dko you mean by keep the pressure up?

I panicked!

Thanks Ian. To be clear, I have got water but it's not hot at at all. I'm guessing because there is air on the central heating side and it's not going through the coil from the boiler. I started bleeding the rads yesterday one by one but gave up after 30 mins as it just got to a pitiful...

Hi Guys Made a bit of a cock up over the weekend. I have an indirect unvented cylinder with a condenser boiler. Wanted to change my radiator and valves in a bedroom for new. Turned off power to boiler, I shut water off at the stop cock, drained the central heating system down by the lowest...

Looks like the slots in line so gas should be on. See image Thanks for the reply.

Evening everyone. Fun day changing a radiator today. I have an indirect unvented system with condenser boiler. I drained down the system and switched the boiler off. I also turned off the gas valve underneath my boiler. From too much back and forth, I can't remember if the attached pictures...

Thanks KRB78. JUst need to know the best method of securing the shuttering to the existing concrete and what best sized timber to use for it?

Hi all. Hoping someone can help me with some advice about extending my shed concrete base. - current shed base is 4" deep and 6x6 and would like to extend it on one side only to 6x8. My plan is this. Hammer two rebars into existing base 50mm from top. Shutter up one side of base...