ZSR103 | Zone Pump Relay 3 Zone | Caleffi Size_19-1/2IN this flame rod is a

this flame rod is a perfect replacement for worn or damaged components

The limit switch

16W power output

making them a versatile solution for various systems

ZSR103 | Zone Pump Relay 3 Zone | Caleffi Size_19-1/2IN this flame rod is aCaleffi Zone Pump Relay (ZSR103) The Caleffi ZSR103 Zone Pump Relay provides precise control and sequencing for up to three zones in hydronic heating and cooling systems. Its compact design and easy to use interface make it ideal for both residential and commercial applications. Key Features: Controls up to three zones independently Adjustable time delays for pump sequencing LED indicators for clear status monitoring Built in dry contacts for remote