Caleffi Z-one™ Multi-Zone Valve Switching Relay, Series: ZVR, 3 Zones, 120 VAC, For Use With: Pump and Boiler, 9-1/4 in Height, 11 in Width, 3 in D
The ZVR series is a multi-zone valve relay and boiler operating control for multiple zone hydronic heating systems. The ZVR series interfaces with low voltage thermostats, or any other low voltage controllers having a switching action. The ZVR series cont