one pipe central heating system

[jmc]

hello there.

I would like some advice on a one pipe central heating system,

at the moment the flow and return come out of the same pipe.

The problem i am going to have is i am up grading to a pressurised system with a cylinder.

i cant change the pipes downstairs because hall,kitchen is tiled and front room is screeded.

please can anyone tell me how downstairs will perform if left please,

 

[Billy Bob Bob]

not very well consider new 2 pipe drops to the down stairs rads

 

[Blackcatgas]

It will work but as Dans said "not very well", also your more likely to suffer from leaks from pressurising the old pipe work thats under the concrete.
Its worth a try, what have you got to lose? if it doesnt work then youve only got to replace it anyway.