Zone Loop Control (CH) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 15.0

Controller Tool Help

Brand
Johnson Controls
Metasys
Product name
Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
15.0
Revision date
2022-11-18
Language
English

The selection options for Zone Loop Control are:

  • Number of Zones

    • One

    • Two

    • Three

    • Four

    • Five

    • Six

    • Seven

    • Eight

  • Number of Pumps for Each Zone

    • None

    • One

    • Two

    • Variable Speed

    • Pump Status

      • 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).

      • Add Bypass Valve: This option adds a bypass valve to further control the loop differential pressure while the secondary pumps are running at minimum speed. This allows you to respan the AO for the bypass valve (CHWBYPV-O) to control from zero (fully opened) to the minimum pump speed (fully closed).

      • Rotate in an Attempt to Balance: This option allows you to choose your rotation strategy which changes chiller staging for all chillers that have the same COP value based on the selections below.

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

        • Start/Stops: This option automatically changes chiller staging order based on the number of starts and stops (minimize starts and stops rotation strategy).

  • Mixing Valve for Each Zone

    • Control Sensor

      • Supply

      • Return

    • Setpoint Strategy

      • Constant Setpoint

      • Water Setpoint Reset by OA-T

      • Water Setpoint Reset by ZN-T

      • Cascaded Water Setpoint Reset by ZN-T and OA-T