Hi Crunchynut, I have the same issue with my Grant vortex condenser oil boiler, when it hits the 60 degrees, cuts out but fires back up in 50 seconds, tried a few different settings on the circulating smart pump and adjusted temp on boiler stat all to no avail, so I will go the same route with time delay relay! Hope ya don’t mind me asking? , any chance you would have a wiring sketch for relay wiring?
Thanks. D.M