Maxitrol KMR212TL Top Loading Kit

Professional-grade Maxitrol KMR212TL Top Loading Kit is an essential field-replacement assembly specifically engineered for Maxitrol Selectra systems using MR212D, MR212E, and MR212G modulating-regulator valves. Designed to maintain precise control in direct-fired negative pressure burners, this kit ensures the atmospheric reference and vent sensing remain optimized for consistent burner performance. As a veteran-verified solution for industrial gas pressure regulators, the KMR212TL provides the necessary hardware to facilitate accurate top loading of the regulator diaphragm, which is critical for systems requiring high-low fire or continuous modulation. The package includes high-quality vent fitting assemblies, a specialized union, a technical connector, and durable tubing to replace worn or clogged sensing lines. By ensuring a clear signal from the burner air pressure to the regulator, this kit resolves common Selectra modulation issues, such as hunting or erratic flame patterns, allowing for seamless integration with electronic amplifiers and sensors in commercial HVACR applications.

• Full Compatibility: Engineered specifically for MR212 Series (D, E, and G models) to ensure factory-spec precision.
• Enhanced Modulation: Critical for maintaining the negative pressure reference required for accurate fuel-to-air ratios.
• Industrial Durability: Includes specialized union and connectors designed to withstand high-cycle commercial gas trains.
• Optimized Performance: Prevents gas valve hunting by ensuring clean, unobstructed vent sensing pathways.

What is the primary function of the KMR212TL kit?
This kit is used for top loading the regulator. It connects the burner air pressure to the top of the regulator diaphragm in a negative pressure system, ensuring the gas flow tracks the combustion air flow accurately.

When should a technician replace the top loading components?
Replace these components if you detect moisture, debris, or a collapse in the existing tubing, or if the regulator fails to respond correctly to changes in burner air pressure during Selectra modulation.

Does this kit work with the Maxitrol MR212J?
While often used for the D, E, and G series, compatibility for the J series should be verified against the specific equipment submittals, as the KMR212TL is primarily listed for the 1", 1-1/4", 1-1/2", and 2" body sizes found in the D, E, and G valves.

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.