Lochinvar & A.O. Smith 100208555 Temperature Board 30067439-890 The T204 is a power-stealing

The T204 is a power-stealing thermostat that requires a constant 75 mA current

providing a critical mechanical fail-safe for high-limit scenarios

Technicians should check for continuity across the terminals using a multimeter

this component is a direct-fit solution for York and Johnson Controls equipment

Will this work for a 30 PSI steam system

Lochinvar & A.O. Smith 100208555 Temperature Board 30067439-890 The T204 is a power-stealingThe 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