Caleffi ZSR 101 Hydronic Zone Control

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PR - Caleffi Zone Control ZSR101Introducing Caleffi’s new line of hydronic heating zone controls: the ZSR101, ZSR and ZVR Series.

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

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