- 4 stage heat and 2 stage cool
- Automatic changeover from any zone
- Fan control from any zone
- Use virtually any four wire or multi-stage thermostat
- Controls up to 20 zones
- LED display for complete system readout
- Fire alarm interlock feature
- Fixed opposing mode timer
- Integrated supply and return air sensor to protect the equipment
- Adjustable timer for second, third, and fourth stage heat and cool operations
- Adjustable fan purge timer
- 50% rule
- Demand based ventilation feature
EWC - UZC Zoning System
