Lochinvar & A.O. Smith 100208555 Temperature Board 30067439-890 Most York systems require a

Most York systems require a signal between 2 and 5 microamps

Operating with a fixed 45-second time delay

Always verify the cabinet size of your specific unit to ensure the 2-point configuration aligns with your existing structural supports

The Trane ACT0417 Actuator is a professional-grade 24v NSR rotary actuator engineered for precise modulation of airflow and fluid control within commercial and residential HVAC systems

Ease of Installation: Designed for rapid standing pilot assembly swap-outs

Lochinvar & A.O. Smith 100208555 Temperature Board 30067439-890 Most York systems require aThe Lochinvar & A. O. Smith 100208555 Temperature Board is a critical OEM 2 stage thermostat control designed for precision thermal regulation in high efficiency commercial and residential water heating systems. As the direct replacement for TST5314, TST5314K, and 100170659, this board maintains system communication between the user interface and the firing controls to ensure accurate set point management. Engineered for durability, this HVAC control