4 new rads in extension

[rich4nancy]

Hi all

I have installed 4 new rads in an extension at home with 22mm copper flow and returns with 4 port manifolds on each end. (speedfit and 10mm barrier pipe on new rads) the 22mm copper is not yet connected to the existing heating system.The current system i have is fully pumped y plan with combined open vent and cold feed with air sep. I presume i can connect the 22mm flow to the CH side of the y plan? The return though is where i need help. i know i cant connect to cylinder return as this needs to be the last connection before the boiler(reverse circulation i think if not) the return off the cylinder is 15 mm as far as i can see with limited view. could i connect the new flow and return side by side on the existing flow ? would that work or am i needing to get floors up near rads to find the return? any suggestions greatly recieved.

Cheers

 

[hibeealex]

if you connect both to the flow, you'll get nowt coming through as they will cancel each other out, you need to get the boards up and connect to the flow & return

 

[John506]

As above, connect to the nearest flow and return possible.

 

[rich4nancy]

Cheers Guys thought that was the case. i guess thats the bathroom floor coming up then as new flow and returns are currently under the bath!