Johnson Controls T-4002-302 Conversion Kit

The Johnson Controls T-4002-302 Conversion Kit is a professional-grade solution designed for the seamless field replacement of existing non-Johnson Controls single-temperature pneumatic instruments. This reverse acting pneumatic thermostat kit is the direct replacement for CTC-1622 and is engineered for two-pipe systems requiring high-volume output. With a 55-85F dial range and a 25 psi maximum air pressure rating, it ensures precise environmental control across a wide range of legacy pneumatic infrastructures. The T-4002-302 facilitates a clean installation with its included white cover and universal mounting hardware, allowing technicians to upgrade older two-pipe pneumatic thermostats from manufacturers like Honeywell, Powers, and Robertshaw without extensive repiping. Its 20 SCIM air consumption rate and 3 to 15 psi control air pressure range provide the reliable performance and compatibility essential for maintaining aging commercial HVAC control systems.

• Universal Compatibility: Includes all necessary adapters and faceplates to replace a wide variety of competitor models, functioning as a universal pneumatic conversion kit.
• High-Volume Output: Features the T-4002-202 thermostat, specifically designed for systems requiring rapid response and significant air volume.
• Comprehensive Kit: Outfitted with an adapter plate, cover plate, vertical and horizontal faceplates, and tubing couplers for a complete pneumatic thermostat replacement.
• Direct Retrofit: Specifically engineered as a high-performance CTC-1622 replacement, ensuring setpoint accuracy and stability.

Common Questions

What models does the T-4002-302 replace?
This kit is a direct replacement for the CTC-1622 and is compatible with various series from Honeywell (TP900/TP910/TP970), Powers (TH180/TH192), and Robertshaw (T-15/T-18) when configured for reverse acting, two-pipe operation.

Does this kit include everything needed for a field conversion?
Yes, the T-4002-302 pneumatic kit includes the thermostat, a white cover, mounting subplates, terminal connectors, and a selection of vertical and horizontal dial scales to match existing orientations.

How do I confirm if my system requires a reverse acting (RA) thermostat?
A reverse acting thermostat increases its output pressure as the sensed temperature decreases. If your terminal equipment (such as a heating valve) requires higher pressure to open as the room cools, this RA kit is the correct specification.

This item is not eligible for free shipping.

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.