1 Service
Maximum setpoint
This setting determines the setpoint used by the unit or cascade when the BMS voltage is at or above the Voltage at Maximum setting. This parameter is only active when the BMS type is set to Setpoint. The temperature range for this parameter is 32°F (0°C) - 230°F (110°C) (boilers) or 32°F (0°C) to 190°F (87°C) (water heaters). The default value is 190°F (88°C) for water heaters and 220°F (104°C) for boilers.
Voltage to start CFH
When the Enable input is set to Inactive, this parameter determines the BMS input voltage at which the unit or cascade is enabled. When the unit is disabled, the unit will become enabled when the BMS input voltage rises up to or above this value. The range for this parameter is (Voltage Differential CFH parameter + 0.1V) - 10V. The default value is 2V.
Voltage differential stop CFH
When the Enable input is set to Inactive, this parameter determines the BMS input voltage at which the unit or cascade is disabled. When the unit is enabled, the unit will become disabled when the BMS input voltage drops down to or below the enable voltage minus this value. The range for this parameter is 0V - (Voltage to Start CFH parameter - 0.1V). The default value is 1V.
Circulation pumps
System pump delay (boiler only)
The system pump delay parameter sets the length of time the system pump (if connected) will run after a SH demand has been satisfied or outdoor air shutdown begins. The time range for this parameter is 1 minute to 40 minutes. The default time is 30 seconds.
SH pump delay (boiler only)
The SH pump delay parameter sets the length of time the boiler pump will run after a SH demand has been satisfied. The time range for this parameter is 1 minute to 40 minutes. The default time is 30 seconds.
DHW pump delay
The DHW pump delay parameter sets the length of time the DHW pump (boiler), or unit pump (water heater) will run after a DHW demand has been satisfied. The time range for this parameter is 1 minute to 40 minutes. The default time is 30 seconds.
System pump mode (boiler only)
The system pump can be configured to operate in one of two modes. “CFH” runs the system pump whenever there is a SH demand. “WWSD” runs the system pump continuously, except when the boiler is blocked due to outdoor shutdown. The default mode is CFH.
Service Notification
Service interval time (months)
When the boiler control determines that a scheduled service is due based on days of installation, the boiler display will alternate the standard boiler display text with the message SERVICE DUE every 5 seconds. The time range for this parameter is 0 months to 36 months. The default time is 12 months.
Service interval run
When the boiler control determines that a scheduled service is due based on the hours of actual operation, the boiler display will alternate the standard boiler display text with the message SERVICE DUE every 5 seconds. The time range for this parameter is 0 hours to 100,000 hours. The default time is 10,000 hours.
Service interval operation
When the boiler control determines that a scheduled service is due based on the number of boiler cycles, the boiler display will alternate the standard boiler display text with the message SERVICE DUE every 5 seconds. The range for this parameter is 0 cycles to 100,000 cycles. The default is 10,000 cycles.
Reset service reminder
Once servicing has been completed, the service notification counter should be reset. Once accessed, press the RESET key to reset the service notification counter.
Accept personality plug
After replacing a control board, the new control will require the installer to verify the model in which it is installed. As soon as the power is turned on, the screen will display “Wrong ID Plg”. Locate the control ID label on the front of the control panel. Note the number written on this label. Access this parameter. That number should appear after the word “Setting:” on the bottom line. If this number matches the number on the connector, press “Enter”.
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