A built-in signaling contact (24V OK) allows for real-time remote monitoring

the 3-speed configuration allows the Lennox 78F90 to be wired for different speeds—typically a lower speed for heating to maximize temperature rise and a higher speed for cooling to manage latent heat removal

This SPST (Single Pole Single Throw) air pressure switch is factory-calibrated to a 1

OEM Compatibility: Precision-engineered for a drop-in fit in specified Rheem and Ruud air handlers and furnaces

including popular models like the 10HPB24-1P and 13ACXN-series

Resideo HPZC106 Controller 322838-752 A built-in signaling contact (24VThe Resideo HPZC106 Controller is a professional grade six zone valve controller engineered for high performance hydronic zoning applications. Designed for seamless integration with central boiler systems, this multi zone panel simplifies complex hydronic heating controls by consolidating wiring into a single, organized interface. It features a robust 120 VAC, 60 Hz input and includes two high output 24V 40 VA transformers to ensure reliable operation