Thoughts on this proposed back boiler circuit??

[smileypete]

3 hours ago, redwing said:

Does the return on a non-pumped circuit need to flow downhill back to the stove ?

On it's own, not necessarily, within reason. However when I read this sort of question I worry that something fundamental might have been missed elsewhere.

A decent diagram including plenty of measurements would help, otherwise I'd suggest a layout along the lines of that in post #11.

Edited November 13, 2017 by smileypete

[redwing]

Thanks Alan and Pete, will let you know how I get on....probably in the new year