Maxitrol TD114G Temperature Selector

The Maxitrol TD114G is a high-precision remote temperature selector designed for integration with Selectra Series 14 systems. Engineered specifically for make-up air heating and direct-fired equipment, this component allows for remote adjustment of discharge air temperatures within a 90°F to 140°F range. As a veteran technician knows, maintaining discharge air temperature control is critical for combustion efficiency and consistent building pressure. The TD114G functions as a specialized potentiometer that communicates directly with Maxitrol amplifiers (such as the A1014) to modulate gas flow via Selectra modulator-regulator valves. Its rugged, compact housing is built for industrial environments, ensuring stable feedback and reducing the "hunting" often seen with inferior HVAC temperature sensors. When replacing a TD114G selector, verify that your discharge air sensor (TS114G) shares the same temperature span to ensure accurate electronic gas flame modulation and maintain the precise setpoints required for high-demand commercial ventilation applications.

Key Benefits

• Precise Modulation: Provides seamless electronic gas modulation when paired with Series 14 amplifiers, replacing inefficient on/off cycling with proportional control.
• Optimized Sensing Range: The 90-140 degrees F span is specifically calibrated for high-output make-up air and industrial process heating.
• Reliable Integration: Direct compatibility with Maxitrol M411, M511, M611, and MR212 series valves for a complete electronic control system.
• Enhanced System Stability: Designed to provide a steady signal to the amplifier, minimizing temperature fluctuations in the discharge air stream.
• Industrial Durability: Robust construction ensures technical specifications are met even in demanding mechanical room conditions.

Common Questions

How do I wire the TD114G to the amplifier for remote operation?
The selector typically connects to terminals 1, 2, and 3 on the Selectra amplifier. Use shielded cable if runs exceed 30 feet to prevent signal interference from high-voltage lines.

Can I use this selector with a 55-90°F sensor?
No. For the system to calibrate correctly, the temperature range of the selector must match the range of the discharge air sensor (e.g., a TS114G) to avoid erratic valve behavior.

What should I check if the system isn't reaching the setpoint?
First, verify the TD114G resistance across its dial range. If the selector is functional, inspect the modulator valve plunger and ensure the amplifier is receiving the correct 24VAC supply.

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.