Failing NRVs

[Killy Bing]

.......there should be absolutly no need for non return valves on a correctly designed and installed system..

you've had a bodge.
if the builder has done the work himself i would seriously consider getting a hetas engineer in to find out all the issues

 

[SimonG]

OP States: Ború

So how do you have a dual fuel system (two separate boiler/pumps) and stop reverse flow?

By having it installed correctly by an experienced engineer. Did you diy

 

[Chalked]

OP States: Ború

So how do you have a dual fuel system (two separate boiler/pumps) and stop reverse flow?

Lots of ways.
Neutraliser is the simple way to link the two.

 

[SimonG]

Lots of ways.
Neutraliser is the simple way to link the two.

Aye but to do it properly it costs money.

 

[Nostrum]

Are you in Ireland?