44
Rev 2.1
• Pump contact stays closed for 1 minute (configurable through Enhanced or System Operator Interface Panel) for
boiler circulation pump to remove residual heat from heat exchanger.
3-9 Start/Stop Levels
Start/Stop levels are controlled by setpoint, On and Off Hysteresis. Central Heating and DHW have its own setpoint, On
Off Hystersis.
Default Central Heating On and Off Hysteresis are set at 7⁰F.
Default DHW On and Off Hysteresis are set at 7⁰F.
Example
Central Heating setpoint is set at 180⁰F
Boiler starts at 173⁰F (setpoint – On Hysteresis) and stops at 187⁰F (setpoint + Off Hysteresis)
DHW setpoint is set at 140⁰F
Boiler starts at 133⁰F (Setpoint – On Hysteresis) and stops at 147⁰F (setpoint + Off Hysteresis)
3-10 High Limit Setpoint
Default Outlet high limit is factory set at 240⁰F for H Stamp and 200⁰F for HLW Stamp.
Outlet and DHW high limit setpoint can be changed using Enhanced or System Operator Interface Panel. Refer to 5-6
HIGH LIMIT RELATED CONFIGURATION
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General