Pipe contact Thermostat

[TonyD1976]

Morning Peeps

just wanted some advice on the correct wiring of a pipe contact thermostat that would need to turn a pump on and inturn turn a gas boiler on.
What i have at present is a solid fuel fire with a back boiler installed, i have had a combi boiler fitted to run along side it ie; if the temperature from the solid fuel fire is not sufficient the themostat on the return pipe under the gas boiler would turn a seprate pump on and the gas boiler.
I have a small understanding on how i should connect it up i guess i will need a relay to turn on the pump and boiler can anyone explain to me a little better how to do this.

 

[Puddle]

you need to know what you are doing here ,the people who fitted system update should know how to do the electrical side,as basic part of update,if they do not know ,would get checked out by competent person/company
If you have done yourself,should defiantly get checked,for the safety of all at he property

 

[stevetheplumber]

Sounds like you need to both break and make a circuit on temp rise break the combi and make the pump for solid fue
use make on temp rise to feed the solid fuel pump and to feed a solenoid which breaks the circuit when powered to switch of combi
be aware that the combi external control circuit needs to be fed from the combi as some saftyt features may work by breaking feed to the power out terminal
hope this makes some sense if i knew how to draw it on a computer it would be much easier to explain