Attributes (Changeover) - Metasys - Johnson Controls - LIT-12011147 - Software Application - Controller Configuration Tool - 13.1

Controller Tool Help
Product
Controls > Control Tools > Controller Configuration Tool
Document number
LIT-12011147
Version
13.1
Revision date
2019-12-04

The following table describes the attributes used by the Changeover modules:

Table 1. Changeover Attributes

Name

Type 1

Description

Default Value
CHW System Enable  

Indicates that the plant is operating in cooling mode.

 False
Cooling Setpoint  

Determines if cooling plant should operate.

 55 °F (13 °C)
Heating Setpoint  

Determines if heating plant should operate.

 90 °F (32 °C)
HW System Enable  

Indicates that the plant is operating in heating mode.

 False
Input 1  

Indicates the current heating plant load.

 0.0
Input 2  

Indicates the current cooling plant load.

 0.0
Mode  

Indicates the desired plant operation.

 Summer
Number of Pumps  

Indicates the number of pumps required to run.

 0.0
Plant Enable  

Enables or disables plant operation.

 False
Pump to Shed  

Starts pump to eliminate excess heat or to quickly warm up the loop temperature.

 False
State  

Indicates the current state of the 2-pipe plant.

 Summer
Temp  

Provides the loop water temperature so that the heating and cooling equipment is protected from thermal shock.

 70 °F (21.1°C)
Valve OpenClose  

Controls the changeover valves for the plant.

 Off
1 B - BACnet Exposed Parameter, C - Configuration Mode Only, G - Default Element (Generated State, if applicable), SC - Simulation and Commissioning Modes Only, V - Calculated Value (Outputs)