As a seasoned technician, you know that makeup air heating requires precision to prevent equipment cycling and ensure consistent discharge temperatures. The Maxitrol TD114B Temperature Selector is a critical component of the Selectra Series 14 modulation system, specifically engineered for high-heat applications like paint spray booths and industrial direct-fired burners. This remote dial allows for accurate discharge air temperature control within a 120°F to 170°F range, providing a steady signal to the amplifier to modulate the gas flame via compatible M or MR series valves. When bench-testing or troubleshooting, remember that the TD114B selector must be matched with its corresponding TS114B discharge air sensor to maintain proper resistance-to-temperature calibration across the 120-170°F scale. Key Benefits for the Contractor: System Compatibility: Designed for seamless integration with Maxitrol Selectra Series 14 and Series 44 electronic gas flame modulation systems. High-Temperature Range: Supports demanding industrial profiles with a 120-170 degrees F selection range, ideal for drying and curing processes. Remote Mounting Flexibility: Allows for centralized control cabinet mounting up to 200 feet from the heater when using standard 18-gauge wire. Precision Modulation: Eliminates the "hunting" common in on/off controls by providing continuous gas flame modulation for stable thermal output. Rugged Design: Built by Maxitrol, the industry standard for gas pressure and modulation controls, ensuring reliable performance in commercial environments. Common Questions: Can I use a standard 55-90°F sensor with this selector? No. For the system to calibrate correctly, the Maxitrol TD114B must be paired with a sensor from the same temperature range, specifically the TS114B sensor. Mixing ranges will result in inaccurate discharge temperatures or system faults. How do I troubleshoot an erratic flame signal from the selector? First, check for induced voltage. Ensure control wiring for the remote temperature selector is not run in the same conduit as high-voltage line power or ignition wires, as this often causes signal interference and erratic valve behavior. Is an external power supply required for the TD114B? The selector receives its signal path from the Selectra amplifier (typically 24VAC powered). Do not ground the transformer secondary in any part of the selector circuit, as this can damage the electronic amplifier components. 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.
