The ZSR101 Series is a versatile single relay control with two outputs for operating a 120 VAC pump with boiler enable, or two 120 VAC devices without boiler enable. Features include rear knock outs for 4×4 junction box mounting, convenient pre-installed jumper for pump operation and 10 amp total load rating.
The new controls feature:
• Heavy-duty sealed relays for quiet operation
• Compatible with 2, 3 and 4-wire thermostats or other low voltage controllers with switching action
• Large screw terminals for ease of wiring and on-board ground terminals
• ZSR and ZVR Models:
— Expandable to unlimited number of zones using simple 3-wire connection between controls
— DHW (ZR/ZC) dry contacts rated for switching line voltage