many 049751001 boards serve as direct replacements for older part numbers

Universal Compatibility: Supports up to 3 heating and 2 cooling stages

The Warrick 26B1C0E LWCO is a heavy-duty

Its precise calibration helps maintain system efficiency and longevity

and the CO-11 bellows assembly gasket to ensure a pressure-tight seal during installation

McDonnell & Miller 159S Controller THPU32HP7Y many 049751001 boards serve asThe McDonnell & Miller 159S Controller (Part Number 178802) is a specialized combination low water cut off and pump controller designed for heavy duty commercial and industrial steam boiler applications. Operating at a maximum pressure of 150 psi, this unit integrates a float operated mechanism with dual bi metal snap acting switches to ensure precise level management. The configuration features one SPST switch dedicated to pump control and a second