Hot Water/Steam Boilers (CH) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 16.0

Select this option if the system has boilers.

The selection options for Hot Water/Steam Boilers are:

Number of Boilers: This option describes the number of boilers in the system.

• One

• Two

• Three

• Four

• Five

• Six

• Seven

• Eight

Select Type of Control: This option describes the method to control the boilers in the system.

• Modulate Burner(s): This option is used for boilers with modulating burners to control.

  • Pressure: This option controls modulating burners to maintain steam pressure.

  • Loop Supply Water Temp: This option controls modulating burners to maintain leaving or supply water temperature.

  • Loop Return Water Temp: This option controls modulating burners to maintain entering or return water temperature.

• On Off Boilers by Return: This option controls discrete (cycling) boilers to maintain entering or return water temperature.

• Package Controls: This option allows boiler factory controls to manage the boiler.

  • Building Load: This option stages on package control boilers to meet building load.

    • BTU Meter AI: This option measures the building load with a BTU meter through a single AI.

    • Calculate Building Load: This option measures building load using two temperatures and a flow meter.

  • OA-T: This option provides stages on package control boilers based on outdoor air temperature.

  • 3-Way Mixing Valve: This option controls a mixing valve to maintain supply water temperature to the building load.

  • Setpoint Adjust AO: This option generates an AO to each boiler to command the setpoint through the BAS.

• Boiler Rotation (Runtime): This option automatically changes boiler staging order based on runtime (equal runtime rotation strategy).

• Boiler Maintenance Switch: This option generates network inputs used to remove a boiler from service.

  • Maintenance Switch (BI): This option generates binary inputs used to remove a boiler from service.

• Dedicated Boiler Pump(s): This option controls a pump as part of the boiler or each boiler has one dedicated HW pump.

  • Variable Speed: This option is for variable primary flow. This selection varies the primary pump speed to maintain differential pressure in the hot water loop while simultaneously operating a bypass valve to maintain minimum flow through the boiler(s). Selecting this option disables Secondary Variable Speed Hot Water Pumping.

  • Pump Status: This option monitors the status of the boiler pump.

    • Loss of Status Strategy

      • Automatic Restart

      • Manual Restart

        • Unit Reset Switch (BI)

  • Alarm Management

    • Motor Overload Tripped

      • Automatic Restart

      • Manual Restart

        • Unit Reset Switch (BI)

    • Frequency Converter Fault

      • Automatic Restart

      • Manual Restart

        • Unit Reset Switch (BI)

    • Belt Alarm

      • Automatic Restart

      • Manual Restart

        • Unit Reset Switch (BI)

  • Blocking Protection: This option provides monitoring of the command to a motor (typically a pump). If the command is off for an extended period of time (for example, 7 days), the motor starts for a short time (for example, 30 seconds). This feature prevents blocking (that is, it prevents the motor from seizing up).

  • Bypass Valve with Diff Pressure Sensor: This option allows a bypass valve to control differential pressure.

• Parallel Primary HW Pumps: This option provides control if the HW pumps are piped in a parallel fashion (any pump may work with any boiler).

  • One Pump

  • Two Pumps

  • Three Pumps

  • Four Pumps

  • Five Pumps

  • Six Pumps

  • Seven Pumps

  • Eight Pumps

  • Variable Speed

  • Bypass Valve with Diff Pressure Sensor: This option allows a bypass valve to control differential pressure.

  • Pump Rotation (Runtime): This option automatically changes pump staging order based on runtime (equal runtime rotation strategy).

  • Pump Status: This option monitors the status of the pump.

    • Loss of Status Strategy

      • Automatic Restart

      • Manual Restart

        • Unit Reset Switch (BI)

  • Alarm Management

    • Lockout Switch
      • Lockout Switch (BI)

    • Motor Overload Tripped

      • Automatic Restart

      • Manual Restart

        • Unit Reset Switch (BI)

    • Frequency Converter Fault

      • Automatic Restart

      • Manual Restart

        • Unit Reset Switch (BI)

    • Belt Alarm

      • Automatic Restart

      • Manual Restart

        • Unit Reset Switch (BI)

  • Blocking Protection: This option provides monitoring of the command to a motor (typically a pump). If the command is off for an extended period of time (for example, 7 days), the motor starts for a short time (for example, 30 seconds). This feature prevents blocking (that is, it prevents the motor from seizing up).

  • Three Stage Frost Protection: This option provides 3 stages of frost protection. If the outdoor air temperature is less than the first setpoint, the primary pumps run (at medium flow for variable speed). If the outdoor air temperature continues to drop and goes below the second setpoint and the zone temperature is greater than or equal to the zone heating setpoint, the boiler turns on. If the outdoor air temperature is below the second setpoint and the zone temperature is less than the zone heating setpoint, the appropriate zone loop turns on.

• Dedicated Pumps Controlled by Others:This option adds pump status for each boiler, but no output control for the pumps.

  • Pump Status
• No Pumps

If the Pressure (Steam Boilers) or Dedicated Boiler Pump(s) is selected, Parallel Primary HW Pumps cannot be selected.