Additional InformationcETLus Intertek 4009064|CSA C22.2 No.24|UL 873
Marketing InformationMulti-zone valve relay and boiler operating control for multiple zone hydronic heating systems. Interfaces with low voltage thermostats or any other low voltage controllers having a switching action. Controls up to 3 to 6 zones (model dependent). System circulator pump and secondary pump is turned on whenever any zone calls for heat. LED indicators provide functional status and easy system troubleshooting. ZVR series is a perfect match with Caleffi Z-one™ motorized zone valves.