For technicians managing make-up air systems and direct-fired units, the Maxitrol TD114A Remote Temperature Selector is the industry standard for precise discharge air temperature control. This remote discharge air temperature selector provides a hands-on interface for the Maxitrol Selectra Series 14 modulation system, allowing for linear adjustment within the 80-130 degrees F range. To ensure zero-drift performance, the TD114A Selectra selector must be matched with its corresponding TS114A temperature sensor; the suffix letters are mandatory for circuit compatibility. When integrated with an A1014 amplifier or AD1014 modulation control amplifier, this unit facilitates instantaneous gas flame modulation for M/MR Series valves. Designed for durability in mechanical rooms and control cabinets, it eliminates the inefficiencies of butterfly valves and mod motors by providing continuous, 1:1 proportional response to load changes in HVAC make-up air applications. For wiring runs exceeding 200 feet, contractors should transition to the ES261 two-piece alternative to maintain signal integrity. Key Benefits Precise Range Control: Optimized for the 80°F to 130°F window specifically for mid-range heating requirements. System Synergy: Purpose-built for the Selectra Series 14, ensuring seamless communication between the discharge air sensor and the modulating valve. Contractor Reliability: Simple 3-wire terminal interface reduces field installation time and simplifies Series 14 troubleshooting. Superior Alternative: Provides more stable discharge air temperatures than traditional mechanical thermostats or staged heating controls. Common Questions Which sensor is compatible with the TD114A? You must use the TS114A discharge air temperature sensor. Suffix matching is critical; using a TS114 (non-A) or TS114B will result in calibration errors and improper modulation. Can I use the TD114A for space temperature control? No, the TD114A is specifically engineered for discharge air temperature selection in direct gas-fired systems. For space temperature control, you would typically look at the Series 44 or use a room override thermostat like the T115 in conjunction with this selector. What happens if the wiring run to the heater is too long? If the remote temperature selector is located more than 200 feet from the amplifier, signal resistance may occur. In these cases, we recommend using the ES261-1 and ES261-2 components to ensure accurate voltage delivery. 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.
