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This valve is field adjustable for negative pressures up to -3
clock for larger lines
Common Questions What is the set point and differential for this switch
The Carrier HH18HA420 Auto Limit Switch is a critical HVAC safety device designed to monitor internal furnace temperatures and protect the heat exchanger from thermal stress
Lochinvar & A.O. Smith 100111778 PCB Assembly 340155-7026 This valve is field adjustableThe 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
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