SKU: 51.4

Hydronic Controls from Taco Zone Pumping Controls combine clearly labeled PC board layouts with advanced features that allow for total system customization. Whether using basic priority switching, plug-in PowerPort cards or add-on power controls, the job is made easy. External indicator lights provide instant diagnostic feedback, making a snap of service calls or new installation startups. All Zone Pumping Controls are UL-listed, use standard "ice cube" replaceable relays and are compatible with conventional and programmable thermostats. For those larger jobs, the Zone Pumping Control can be expanded up to 20 zones with priority. Advanced Features With the exclusive Taco PowerPort plug-in cards, features such as post purge, priority protection, and pump exercise can be added with ease. Any expandable Zone Pumping Control can also interface with the boiler reset control and injection mixing add-on power controls. Mix-and-match to customize the system. External Diagnostics It's no longer necessary to remove the box cover to troubleshoot the system. External visible indicator lights show full functionality of all the products wired to the Zone Valve Controls. When the thermostat calls for heat, both the appropriate zone valve and yellow indicator lights are energized.