Adding an additional radiator to a combi CH loop

Hi.

I want to add a radiator to our existing Central Heating. I have replaced a radiator before and feel reasonably confident about doing the job provided I have done the research. Anyway I have locate 2 x 22 mm pipe near to the place I want to put the rad and have identified the supply and return. I got the followind questions

- When I tee off to connect up the new rad do I cut into both the original 22mm supply and return pipes. Or is it possible to cut into the supply 22mm pipe twice i.e so that new rad return flows back into the supply pipe (I suspect not)

- What is the best pipe cutter to use for tight spaces? Or can anyone give me a tip on how to de-solder existing joints (they are new as the CHS was only fitted 2yrs ago)

- When choosing a rad and the fittings for a direct system is there particular fittings I should use? (I read something earlier about TVR)

Any advice appreciated and please point me to any resources if this already written somewhere

thanks

When I tee off to connect up the new rad do I cut into both the original 22mm supply and return pipes. Or is it possible to cut into the supply 22mm pipe twice i.e so that new rad return flows back into the supply pipe (I suspect not)

Click to expand...

you cut into both

- What is the best pipe cutter to use for tight spaces? Or can anyone give me a tip on how to de-solder existing joints (they are new as the CHS was only fitted 2yrs ago)

Click to expand...

monument pipeslice de solder fittings by heating them and pull apart

When choosing a rad and the fittings for a direct system is there particular fittings I should use? (I read something earlier about TVR)

Click to expand...

TRV thermostatic radiator valve building regs etc a tvr is a car

thanks for your tips. For the pipe cutter do you mean this one?

http://www.amazon.co.uk/Monument-22pc-Automatic-Copper-Cutter/dp/B0001P0FI6

Is this any good for cutting off very short lengths of pipe i.e trimming 1cm off the flow/return pipes to make room for the Tjoint?