Lochinvar & A.O. Smith 100111778 PCB Assembly 326058-756 utilizing rubber sealing diaphragms to

utilizing rubber sealing diaphragms to offset water pressure fluctuations and prevent sedimentation or corrosion of internal components

it ensures seamless mechanical and electrical integration into the safety chain

The A-4000-120 is rated for a maximum line pressure of 125 PSIG

the HC44VQ852 motor features high-grade insulation to handle the thermal loads of constant-duty cycling

technicians should typically retain existing mounting brackets if they are in serviceable condition or source them separately if damaged

Lochinvar & A.O. Smith 100111778 PCB Assembly 326058-756 utilizing rubber sealing diaphragms toThe Lochinvar & A. O. Smith 100111778 PCB Assembly is a direct replacement integrated control board designed for high efficiency commercial water heaters and boilers. This OEM control board serves as the primary logic processor, regulating ignition sequences, flame sensing, and temperature modulation to ensure precise thermal output. Engineered for rigorous duty cycles, the 100111778 circuit board utilizes a robust architecture to manage communication