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Triple function aquastat- temp setting help needed
I have installed theL6081A 1010 Honeywell to control the circulator pump to run only on call for heat when the boiler water is above a preset temp. The circulator used to run constantly. 3/4 HP motor- 24 hours per day during the entire heating season here in western PA. -Costly! I'm setting the Hi limit at 180. What should I set the Low limit at or is it OK to let the boiler cool down on night set back until a call for heat after several hours later? Is this cooldown hard on the boiler? Ideal differential settings???
Obviously needing help. John 58.