The Comfort System™ Z-600™ is a versatile 6 zone control board for residential and commercial zoning applications. The system can be expanded to as many as 12 zones by adding 3-zone expansion panels. The Z-600™ can be used with single stage, multi-stage or heat pump equipment up to 3 stages of heat and 2 stages of cool. The panel also has a built in duel capability to handle your challenging heat pump with fossil fuel auxiliary heat applications. Simple slide switch configuration allows a wide range of system setup and control options best suited for each zoning application. The Z-600™ is a position zone control system that can accommodate two wire or 3 wire dampers. Additional features include fuse protected inputs and outputs, easy-to-read and access wiring terminals, LED status indication of all system functions, time delay override, adjustable on-board limits, outdoor balance point control for duel fuel applications, and selectable ventilation and purge modes. Capacity control can also stage equipment based on the number of zones calling.