What Our Experts Think
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The Taco SR506-EXP 6 Zone Switching Relay is a high-performance control solution for managing up to six heating zones in hydronic systems.
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It features a priority zone function for domestic hot water and expandable design to easily connect additional controls for larger systems.
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With three power ports and plug-in connections, installation is fast, clean, and reliable.
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Built for HVAC professionals, it simplifies wiring, improves efficiency, and ensures dependable operation across multiple heating zones.
Q&A
Q: How many zones does this relay control?
A: It controls up to six heating zones, with one configurable as a priority zone for domestic hot water.
Q: What does “EXP” mean in this model?
A: “EXP” stands for expandable, allowing integration with other Taco zone controls to handle more than six zones.
Q: What types of systems is it compatible with?
A: It’s compatible with Taco pumps, valves, and most 24V thermostats used in hydronic heating systems.
Q: Does it simplify installation?
A: Yes, the plug-in wiring terminals and LED diagnostics make setup and troubleshooting quick and efficient.
Maintenance Tips
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Inspect wiring connections regularly for tightness and corrosion.
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Keep terminals clean and dry to prevent electrical faults.
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Periodically test the priority zone function to ensure proper domestic hot water control.
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Ensure the relay is mounted in a dry, ventilated area for reliable long-term performance.