There is a radiator one side of the room and I want to add another the other side of the room. lifting the boards reveals 22mm pipework with 15mm leaving to feed the existing radiator.
I assume the 'Flow' side is the control side of the rad and the return is on the 'balance' valve side?.
Now I'm all for easy fit so
1. Is there a self cutting fitting available to fit to existing 22mm pipes so I can exend them without having to drain the system down [gravity fed I believe]
2. Are there plastic pushfits available for central heating?
3. Is there plastic pipe available for central heating flow and feed pipes.
I'd like a c/heating engineer do it but I'm strapped for cash and won't employ when I can't possibly pay.
You will have to drain the system down as the water will continue to fill as the water drains down. you can save time by closing all radiators valves and then you only have to empty and fill the pipes. if it is open vented you will have to stop the cold water supply re-filling the header tank.
There is a great product that i use called Hep2o which is especially made for central heating. This will make the job easier. Plenty of suppliers are selling this on ebay.
Back again! Just been told after looking for header tank my system is a sealed system so no header tank. If I turn off the incoming mains feed will that stop water entering boiler? So at the moment wishiwascorgi back to resting.
Self cutting joints?
Our local plumbing supplier is a mine of information when asked about the self cutting joints [22mm to 15mm if there is one ] all I got was 'er aint got any but will have to get some' then continued with 'do-it-all [focus] do them' - are they ok for central heating sytem flow pipes? 'Dunno, suppose so'. Not very helpfull is it. Anyone know of self cutting fittings that would be suitable for connection to central heating???.
to be honest greengrass even though i am capable of soldering copper joints i would never use one of these fitting as all it does is make a hole in the pipe and then washers seal around the hole to stop it leaking. As the system is pressurized and running at at around 60-90degrees then i would not use these as there is a good chance of your ceiling coming down. For the sake of Â£100 plus materials i would get someone in who knows what they are doing and is competent in his/her job. Also you would get a guarentee.