Freeze Protection (G36) (MASD) - Johnson Controls - Metasys - LIT-12011147 - Software Application - Controller Configuration Tool - 16.0

Controller Tool Help

Brand
Johnson Controls
Metasys
Product name
Controller Configuration Tool
Document type
User Guide
Document number
LIT-12011147
Version
16.0
Revision date
2023-10-02
Language
English

There are three stages of freeze protection. The first stage modulates the heating valve to maintain a safe discharge air temperature. The second stage eliminates outdoor air ventilation in case heating is not available for any reason. The third stage shuts down the unit and activates coil valves and pumps to circulate water in case the second stage does not work, for example, stuck economizer damper.