Lochinvar & A.O. Smith 100191089 Tubing

The Lochinvar & A.O. Smith 100191089 Tubing is a critical OEM replacement part engineered for natural gas pilot assemblies in high-efficiency commercial and residential gas-fired boilers and water heaters. As a veteran technician, you know that maintaining precise gas flow to the pilot burner is non-negotiable for reliable ignition and consistent flame rectification. This NAT PILOT/TUBING kit is specifically designed to facilitate the steady chemical-to-thermal energy transfer required to light the main burner assembly without frequent ignition failures. Built to exacting factory tolerances, the 100191089 ensures a secure, leak-free connection between the gas valve and the pilot burner, preventing the nuisance lockouts often caused by debris or hairline fractures in aged, brittle domestic tubing. It is fully compatible with a wide range of Lochinvar Copper-Fin II and A.O. Smith commercial units, providing the structural integrity needed to withstand the high-ambient temperatures found within the combustion chamber while ensuring burner assembly safety and peak operational efficiency.

Key Benefits

• Precision Gas Flow: Ensures the correct manifold pressure reaches the pilot for stable flame sensing and ignition.
• OEM Compatibility: Exact dimensional match for 100191089, eliminating the need for field-modifying universal tubing kits.
• System Reliability: Reduces call-backs by preventing intermittent pilot outages and gas-train communication errors.
• Natural Gas Optimized: Engineered specifically for NAT pilot configurations to maintain clean combustion profiles.
• Durable Construction: High-grade materials designed to resist corrosion and thermal fatigue in sealed combustion environments.

Common Questions

Does this tubing include the pilot orifice?
This part number typically refers to the dedicated pilot tubing line. Always inspect your existing pilot orifice and burner bracket for soot buildup or corrosion during installation to ensure a complete, professional repair.

Can this be used for Propane (LP) systems?
The 100191089 is designated for Natural Gas (NAT) systems. Utilizing this component in an LP application without the proper conversion and orifice sizing can lead to improper combustion and hazardous operating conditions.

What are the signs that this tubing needs replacement?
Common indicators include visible kinking, soot accumulation at connection points, or "no heat" calls where the igniter sparks but the pilot light fails to establish a flame due to gas starvation.

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.