I have DF 520 settings at 3 teeth and 3and ¼ air 200 high 160 low (2min per half hour)
I have radiant tubing in concrete floor in basement. With 3 teeth the boiler works long
I then go to 4 teeth 4 air and its works much better. The problem is the concrete holds heat for 9 hours ,and cause there is no call for heat ,with 4 teeth the boiler temp climbs to 200 limit and shuts down the timer . I have baseboard heat in garage with its own thermostat and circulator that I don’t use. The question is how can I run the circulator in garage to dump heat when boiler goes to 200 without using the thermostat . Could the aquastat be wired to start the pump on high temp and shut off at lower temp ?
Auquastat # L7224a,c