The ZoneTrol II provides DHW priority timer, post purge function and pump exercise into an economical and user-friendly package. This ready-to-install controller for hydronic circulators can be used in residential and light commerical applications. All ZoneTrol II controllers are UL and cUL listed and feature multi-function LEDs that are visible without removing the cover for easy start-up and troubleshooting. All units are compatible with analog and digital 24 VAC thermostats, including "power stealing" designs.
Multi-zone controllers feature an advanced microprocessor design that provides domestic hot water priority and timer, pump exercise and a post purge timer without the need for add-on circuit boards or modules.