When multiple controls in a single system try to operate the boiler(s) simultaneously, short cycling can occur. For the most efficient boiler operation, only one control should operate the boiler(s). All of the remaining controls should send a simple on / off signal to the boiler control. This function when used with a proper boiler control improves the system operation by preventing short cycling of the boiler(s). This also allows for easy integration of controls into existing systems.