Welcome! Here are the website rules, as well as some tips for using this forum.
If you've found help here, check back in to let us know how everything worked out.
It's a great way to thank those who helped you.
Two system thermostats one circ
I have 2 systems - one a wood boiler and the second a geothermal water to water.
There are 2 thermostats in each of 2 zones one for the wood and one for the geo. They each call the respective unit on but I need them to start the radiant circ. They have separate transformers so I can't just wire them together I know there must be a 2 input isolated relay so I could have 1 or the other or both calling and pulling in the circulator.
Anyone know the relay I am looking for or even if there is such a beast.