Resideo AT72D1691 Transformer 322055-301 Utilizing high-temp ball bearings like

Utilizing high-temp ball bearings like the 4AAD1945A is vital for systems operating under constant duty cycles

Optimized System Efficiency: Features a low power consumption magnetic pilot valve and a slide mechanism designed for minimal pressure drop

Precise Ignition Timing: Integrated microprocessor control ensures repeatable 7-second TFI and 24VAC sequencing

this model is a direct functional equivalent to the Barber Colman 2474-140 and MK-574-51

ensuring a reliable fit for standard liquid line and evaporator coil configurations

Resideo AT72D1691 Transformer 322055-301 Utilizing high-temp ball bearings likeThe Resideo AT72D1691 Transformer is a heavy duty 40VA power solution engineered for consistent performance in demanding HVACR applications. Designed for versatile installation, this plate mounted 24V transformer features a multi tap primary, allowing for easy integration with 208V 240V power supplies. It provides a stable 26. 5 V. O. C. secondary output, making it ideal for powering complex control circuits, including thermostats, gas valves, and