"Arthur" wrote in message
...
I am actually using speedfit for my installation. So the speedfit
manifold
would simplify and minimise
my connections hugely. I am installing radiators in 3 bedrooms and a
bathroom on the same floor.
If I position this manifold so that 1 of the radiators (bathroom) is
almost
next to the manifold while the bedroom runs will be a much longer, will
that
have a detrimental effect on the system?

Just turn the one in the bathroom down further when you start balancing the
system.