The EMM-3U by Honeywell controls single-stage, multi-stage,conventional or heat pump equipment and is used on two- and three-zoneapplications.
Features:• Compatible with single-stage, multi-stage, conventional or heat pump applications.
• Select virtually any Honeywell four-wire, single-stage or multi-stage heat pump thermostat. • System and Zone LEDs indicate system status. • Automatic zone changeover with 20-minute changeover timer. • Individual zone fan control. • Thermal circuit breaker protects panel and transformer from damage if miss-wired. • Purge timer protects equipment between calls for heating and cooling. • Uses spring-open/power-closed, spring-closed/power-open, and power-open/power-closed dampers. • Interfaces with single or dual transformer equipment.
