Can I link a back boiler heating system to my existing hot water radiator system to get an increased heat output to the radiator and underfloor systems?
Will I need to add another expansion pipe for the wood burner circulation or will the existing system one suffice?
I am looking at fitting gate valves to the wood burner flow & return pipes in order to be able to shut that circuit down when fire is not in use.
thanks for reply.
You say extra controls needed, what do you suggest,
currently apart from circulating pumps for the radiators and underfloor heating the only other control is a temperature control on the hot flow pipe linked to the underfloor heating pump which turns the pump off if the inlet temp. is too high.
I take your point on explosive risk if both flow and return are fitted with valves. It was only to stop the flow if the wood burner was not in use so one will be fine. Does this assume I have a separate expansion tank for the wood burner?
Because our chalet bungalow does not have a loft as such, space and height is limited for tanks etc. which is why I want to use the existing expansion tank and pipe on the AGA circuit for both when the wood burner and an additional radiator are linked in.
Thanks Andrew, one final question.
If the existing pump on my aga system is powerful enough to circulate both systems. On the wood burner side if I tee off the expansion pipe from the wood burner and just fit the non-return valve before connecting into the heating circuit ,would this be o.k ?