In an earlier contribution to this discussion,
Dave Plowman (News) wrote:

In article ,
stevesmith wrote:
I need to fit a radiator before the pump on my gas central heating
system.

Is it feasible ????

Yup.


Are you sure??


or do I need to reposition pump ???

The pump could be situated anywhere in the circuit.

Yes, but it isn't really a circuit is it, unless it's a one pipe system.
Conventionally, all the radiators are connected in parallel - taking their
feed from the flow pipe *after* the pump, and with their returns all
connected into the boiler return pipe.

If you take a feed for one radiator *before* the pump, where do you connect
its return? If you common this with all the other returns, you'll get
virtually no flow through this rad because both sides will be at the same
pressure. You *certainly* don't want to connect it in series with the flow
pipe so that *all* the flow for the entire system goes through this single
rad. One possibility may be to connect both the rad's flow and return pipes
into the system flow pipe before the boiler - so that this bit of the system
would effectively be a one-pipe affair. But it's pretty non-standard!
--
Cheers,
Roger
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