住宅小区控制阀- ZoneTrol™ II
Residential Controls - ZoneTrol™ II

Optional Features (4 and 6 zone controllers only)

• Boiler Reset: Incorporates a pre-wired integral boiler reset controller into the ZoneTrol II enclosure. Reset controller cycles the burner to maintain the optimum system supply temperature relative to the outdoor air temperature. Warm weather shutdown functionality can be activated to prevent system operation above a user-selectable outdoor temperature threshold. All necessary sensors are included.
• Mixing Reset: For use on hydronic systems incorporating a variable speed injection pump. Incorporates a pre-wired integral mixing reset controller into the ZoneTrol II enclosure. Mixing Reset controller varies the speed of the injection pump to maintain optimum radiant loop temperature relative to the outdoor air temperature. The boiler return temperature is also monitored to ensure that the appropriate minimum water temperature is not violated. Warm weather shutdown functionality can be activated to prevent system operation above a user-selectable outdoor temperature threshold. All necessary sensors are included.

APPLICATIONS:

• 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.
• Five-year Warranty