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Need help wiring aquastat
My plumber just finished setting up a hot water loop today off my Weil McLain steam boiler (with a heat exchanger and 2 circulators) and all seemed to be working OK until a few hours after the plumber left and we noticed that even though the hot water zone reached the set point in the hot water loop thermostat and the steam thermostat the boiler was still firing. So basically even though both thermostats are set to 68 the house is now 75 degrees because the boiler keeps firing. I suspect this is because the aquastat (a strap on aquastat strapped to the supply line feeding into the circulator feeding the heat exchanger) is checking for water temp and in turn firing the burner even though the hot water zone thermostat isn’t calling for heat. I suspect the aquastat isn’t wired properly in the Taco Sr 501 relay the plumber installed. Any ideas? If I can just move a wire in the relay and fix this that would be great. We are roasting here.