• Automatic changeover from any zone|
• Fan control from any zone|
• Use virtually any four wire or multi-stage thermostat
• Controls up to 4 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, 5% rule|
• Demand based ventilation feature|
• Electronic bypass damper interface achieves latent cooling and quiet mode start up|
• Adjustable supply air sensor prevents over heating or cooling|
• Adjustable heat differential potentiometer allows the SAS to be mounted in any location|
• One zone feature allows one thermostat to control multiple zones for set back|
• Computer watchdog circuitry prevents lock-ups from power failures and power interruptions|
• Manual and automatic thermal circuit breakers protects the UZC from wiring shorts|
• Dehumidify or humidify interface: auxiliary contacts to help increase comfort operations|
• Return air monitoring: Enhanced HVAC energy savings|
• Variable speed interface: Slows down fan speed if less than 25 percent of zones are calling

EWC Universal Zone Control System, Series: UZC, 24 VAC, 19-7/8 in Height, 10 in Width, 1.7 in D, 2-Cool/4-Heat Stages, LED, 4 Zones, For Use with: EWC Models URD, ND, RSD and SID Damper and Two-Stage Heat/Cool Thermostat, Domestic