Attributes (Min OA Fan Constant Capacity) - 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 following table describes the attributes used by the Min OA Fan Constant Capacity modules.

Table 1. Min OA Fan Constant Capacity Attributes

Name

Type 1

Description

Default Value

Damper Delay

 

Allows the damper to start opening before the fan is energized. The damper delay defines the amount of time between the damper opening and the fan starting.

30 Seconds

Damper OpenClose

 

Contains the control signal for the minimum OA damper. The enumeration set only has two values, Close and Open.

Close

Set Name: Close/Open

Fan OnOff

 

Contains the control signal for the minimum injection fan. The enumeration set only has two values, Off and On.

Off

Set Name: Off/On

Low Limit Delay

 

Defines the time the damper remains closed once the low limit process variable rises above the low limit setpoint.

180 Seconds

Low Limit Process Variable

 

Contains the low limit temperature process variable. This temperature is usually the mixed air temperature or the preheat air temperature.

7 °C, 45 °F

Low Limit Setpoint

 

Indicates the threshold for the low limit process function. When the low limit process variable is above this temperature, the damper and fan may be turned on to provide adequate levels of outdoor air. Below this setpoint, outdoor air levels may be limited by turning off the fan and damper until the low limit process variable remains above the setpoint for the Low Limit Delay.

7 °C, 45 °F

MOA-OUTSTATE (State)

 

Indicates the current operational mode of the Output Controller.

No Flow

Set Name: AHU MinOA Fan State

Mode

 

Desired mode of operation.

No Flow

Set Name: AHU MinOA Fan Mode

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