Fan Determination (VAV Parallel Temp Based) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 15.0

Controller Tool Help

Johnson Controls
Product name
Controller Configuration Tool
Document type
User Guide
Document number
Revision date

This module is responsible for generating the on or off state for the control of a parallel fan within a VAV application according to a temperature based algorithm.

If the heating or cooling command are greater than the Fan On Threshold, the state output is on. When the heating and cooling command are both below the Fan Off Threshold, the state output is off. If the Heating Purge Duration is greater than zero, the Heating Command must be below the Fan Off Threshold for the time specified before the state output is off.

This module can be used to provide the on command to single speed fans, three speed fans, or proportional fans.

You can view and modify the modules in this group’s logic.