Azel SP-82 2-Zone Hydronic Relay for Radiant Floors

The Azel SP-82 is a high-performance 2-zone switching relay designed for precise control of hydronic radiant floor heating systems. Compatible with low-voltage thermostats or SPST controllers, this relay enables seamless integration with up to two circulators and a boiler control in multi-zone setups. Its Intelligent Linking System (i-Link) supports unlimited zone expansion by adding compatible modules, making it ideal for large residential or commercial applications.

Key features include an Isolated End Switch and Priority End Switch for full compatibility with high-efficiency Mod-Con boilers, while front-panel LED indicators provide real-time status updates and simplified troubleshooting. EZ screwless terminal blocks simplify wiring to thermostats, and a field-selectable priority timer prevents freeze-ups if a priority zone fails. Additionally, the system circulator activates automatically whenever any zone demands heat, ensuring consistent performance.