Issue
Communications issues with a Niagara R2 UNC-520 and Viconics VT-76xx BACnet thermostats
Environment
- Niagara R2 UNC-520
- Viconics VT-76xx BACnet
Cause
Viconics VT-76xx BACnet thermostats do not support COV.
Resolution
Use the admin tool servlet to set useCOV to false.