Controller for hydronic circulators in residential and light commercial applications
Features and Benefits
Post Purge Timer: Circulator(s) will continue to run for 90 seconds after thermostat opens and allows additional extraction of BTUs from high mass boilers. User adjustable settings are OFF and ON.
Exercise: Runs each circulator for 10 seconds after each 72 hours of inactivity. User adjustable settings are ON and OFF.
Expandability: 4 and 6 zone controllers can easily be connected via an RJ-11 cable to accommodate systems consisting of up to 18 circulators.
The next generation of zone controllers from Bell & Gossett brings 21st century technology to residential controls.
ZoneTrol™ II provides DHW priority timer, post purge function and pump exercise into an economical and user-friendly package.
With optional outdoor reset controls, the ZoneTrol II is a natural fit with today’s green building strategies. Your modern hydronic systems deserve a modern controller. Description
Xylem’s Bell & Gossett ZoneTrol II is a ready-to-install controller for hydronic circulators in residential and light commercial 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.
The multi-zone controllers feature an advanced microprocessor design that provides domestic hot water (DHW) priority & timer, pump exercise and a post purge timer without the need for add-on circuit boards or modules. Four and six zone controllers are field expandable for up to 18 pumps and are available with integrated, pre-wired boiler reset or mix reset controllers. Units with reset controllers include all necessary sensors.