Lochinvar & A.O. Smith 100113125 Kit

As a veteran tech, you know that a flickering or inconsistent pilot is often the first sign of a failing thermopile assembly. The Lochinvar & A.O. Smith 100113125 Kit is the direct OEM solution for restoring reliable ignition and millivolt production in high-efficiency natural gas water heaters and boilers. This natural gas pilot burner kit features a heavy-duty thermopile with tubing designed to generate the precise DC voltage required to hold the gas valve solenoid open. Unlike generic universal parts, this 100113125 pilot kit ensures the proper flame envelope to prevent nuisance lockouts and "no hot water" calls. The included aluminum pilot tubing and pre-set orifice eliminate the guesswork during field replacement, ensuring the natural pilot assembly maintains the specific 30-750mV output range required for A.O. Smith gas valves. When troubleshooting Lochinvar boiler pilot issues, replacing the entire assembly is the industry standard to ensure long-term HVACR system performance and safety.

Key Benefits for the Contractor:

• OEM Compatibility: Precision-engineered for A.O. Smith and Lochinvar residential and light commercial natural gas units.
• Reliable Millivolt Output: High-grade thermopile generator ensures consistent power to the gas control valve.
• Simplified Installation: Includes pre-bent pilot tubing and mounting brackets for a drop-in natural gas pilot burner replacement.
• Enhanced Safety: Built-in flame sensing capability prevents gas flow if the pilot flame is extinguished or unstable.

Common Questions:

Why is my millivolt reading low even with a steady flame?
Soot buildup or oxidation on the thermopile leads to high internal resistance. If cleaning doesn't restore at least 325mV under load, the 100113125 kit is the required fix.

Can I use this 100113125 pilot for Liquid Propane (LP) units?
No, this kit is specifically jetted for natural gas systems. Using it with LP will cause improper combustion and potential hazardous conditions.

What causes the pilot tubing to clog frequently?
Debris in the gas line or internal "dropping" of the pilot orifice can restrict flow. Replacing the tubing and pilot assembly simultaneously ensures a clean path for the fuel.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.