Johnson Controls T-4002-122 Terminal Connector

The Johnson Controls T-4002-122 is a professional-grade terminal connector engineered specifically for T-4002 series high-volume thermostats. This critical pneumatic control accessory features two straight fittings designed for a secure, plug-in connection to 5/32" OD polyethylene tubing. Built for high-capacity applications, it facilitates consistent pneumatic airflow between the thermostat and the mechanical system's actuators or valves. For contractors performing "rough-in" installations, this terminal connector snaps directly into the T-4002-124 mounting bracket, providing a streamlined interface that simplifies field maintenance and device replacement. The barbed fittings ensure a leak-resistant seal when paired with standard HVAC pneumatic tubing, maintaining system pressure integrity in demanding commercial environments. Whether you are upgrading a legacy T-4000 series system or performing a fresh install, the T-4002-122 provides the technical precision required for accurate environmental control.

Key Benefits:

• High-Volume Compatibility: Optimized for T-4002 high-volume thermostats to handle increased output requirements.
• Secure Connectivity: Dual straight barbed fittings provide a reliable plug-in connection for 5/32" OD tubing.
• Simplified Installation: Designed to snap into standard mounting brackets, reducing labor time during device swaps.
• Industrial Durability: Rugged construction withstands the vibrations and pressure fluctuations common in HVAC pneumatic systems.

Common Questions:

• Which tubing size is compatible with this connector? This unit is built for 5/32" OD polyethylene tubing. If you are working with 1/4" tubing, use a 5/32" coupler for a proper fit.
• Can this be used with any T-4000 series thermostat? It is specifically designed for T-4002 series models. Always verify your specific thermostat model matches the terminal connector specifications.
• Does it include the mounting bracket? No, this is the terminal connector only; the T-4002-124 mounting bracket must be sourced separately if needed for new installations.

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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.