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.
I have read various discussions here on LWCO wiring. The Taco instructions say to break contact to the burner. My French Boiler control has a special contact for it. My original installer wired it to cut power to the boiler but nothing else. My assumption is the most likely cause of an LWCO relay alarm would be for the control to fail leaving a freezing house and causing the pipes to burst. But I guess the boiler could crack or the feed valves could fail and the return pipes could leak. I have no radiation beneath the boiler. I already have the burner wire package laid bare on a set of terminal blocks because of the proving switch on my fan in the can. The biggest electrical safety issue is that Riello Air shutter and I now have a timer on the burner like a priority protection timer to deal with it.
Is there a generally accepted way to wire these LWCO's?