2 rads. Of 10mm drops

[Matt0029]

I have a friend who wants a radiator adding to his system in the garage. His proposing teeing off the 10mm pipe drops to the rad. Behind the garage wall in the kitchen. How big will this be heat wise? It's a new build so all piped from a central manifold in 10mm and can't really get to it to repipe. Thanks. The rads are 1000 by 600 in garage and I think kitchen a tad smaller.

 

[SimonG]

You will struggle. Best to go back to manifold or tee off 22.

 

[ShaunCorbs]

Agree no go the only way is to pipe them in series eg flow into one return out of that into the flow of another return out of that into the return pipe will take a tad longer to heat but should heat up

 

[Chalked]

I’ve had no success teeing into 10mm done it twice, both time only one rad at a time works.
never mind what customer says, take it back to mains

 

[Stu-B]

Back to the 22 is best option, it’ll come back to haunt you otherwise, trust me!