thermostat harnesses

This immersion temperature controller is essential for contractors requiring an L4006A equivalent for high-limit protection in commercial or residential boiler applications

and York systems

The kit integrates a high-performance SEN00491 flame sensor and a 120V White-Rodgers 50A55-486 ignition control board

supporting a system static pressure up to 400 psi and fluid temperatures between 32° and 200°F

McDonnell & Miller 63 Low Water Cut Off Freon thermostat harnessesThe McDonnell & Miller 63 Low Water Cut Off (Part Number 142400) is a heavy duty, float operated safety control designed for residential, commercial, and industrial boiler applications. This mechanical LWCO is specifically engineered for use with both hot water and steam boilers, providing a critical layer of protection against dry fire conditions. Featuring a 1" NPT threaded connection for equalizing pipes, it is rated for a maximum boiler pressure