this Marley engineered thermostat includes the knurled adjustment knob and necessary hardware for a complete built-in installation

preventing the reverse flow of non-potable water into the supply line

Is a transformer included with the 169550

and Payne 4-ton air handlers and heat pumps

and Tempstar residential and light commercial HVAC units

Lochinvar & A.O. Smith 100111012 Electronic Control 340793-762 this Marley engineered thermostat includesThis genuine Lochinvar & A. O. Smith 100111012 Electronic Control is a critical microprocessor based controller designed specifically for BTH400NL commercial water heaters. As a primary digital display control board, it manages the combustion process, monitors safety limit strings, and provides real time diagnostics for high efficiency systems. This module is the direct replacement for the legacy 9006235005 control board, ensuring seamless integration