EXCEL CARE CONTROL ICONS ALPHABETIC REFERENCE165 74-5577–33 (US)EN2B-0184 GE51 R0518 (Europe)• Connect a space sensor.• Set space temperature setpoint greater than 64.4F (18C).• Enable adaptation (P14).• Ensure the following conditions:- Average OAT must be less than 59F (15C).- Adaptation must occur at least three times before you can alter the defaults forthe basic setting of the heating curve.Optimum Stop EOH calculates the optimum stop period based on outdoor air temperature:Depending on whether or not a room temperature sensor is connected, softwaremay further modify this optimized stop period, for example:• Increase if room temperature is greater than room setpoint (maximum 2 hours).• Decrease if room temperature is less than room setpoint.At the calculated stop time, software resets discharge air setpoint to zero andchanges digital output YD3 to logic 1. YD3 remains at logic 1 until optimum start(next day or later).Optimum Start/Stop / EOH3Function Calculate optimized values for starting and stopping the heating plant and for thesupply water setpoint. The EOH3 function considers the residual heat in a buildingto avoid unnecessary heating operation and, thus, save energy. Required roomconditions are met at all times.EOH3 calculates the required flow temperature according to an integrated heatingcurve.There are two optimization options:• optimization without room sensor• optimization with room sensorOptimization without a room sensor uses the outdoor air temperature to determinethe optimum start (preheat point).Optimization with a room sensor uses the room control and needs a time constantand dead time to calculate the preheat point.Any kind of start or stop optimization requires a time program for the roomtemperature setpoint.Time program setpoint values are:EOH3
