The Johnson Controls T-4002-302 is a reverse acting pneumatic thermostat conversion kit engineered for commercial HVAC pneumatic control systems. Designed to simplify field upgrades and replacements, this kit allows technicians to convert or restore pneumatic thermostat operation without a full system overhaul, reducing downtime and installation costs.
Key Features
- Reverse acting operation — increases branch line pressure as temperature rises, ideal for cooling applications
- 55–85°F dial range for precise space temperature control in commercial environments
- Includes white thermostat cover for a clean, professional wall appearance
- Conversion kit design simplifies field installation and system upgrades
- Compatible with standard pneumatic control systems used in commercial buildings
- Durable construction built to Johnson Controls quality standards
Specifications
- Model: T-4002-302
- Brand: Johnson Controls
- Action: Reverse Acting
- Temperature Dial Range: 55–85°F
- Control Type: Pneumatic
- Cover Color: White
- Application: Commercial HVAC pneumatic control systems
Application
The T-4002-302 is well suited for commercial office buildings, schools, hospitals, and other facilities that rely on pneumatic HVAC control systems. Its reverse acting configuration makes it the preferred choice for cooling-dominant zones where a rise in space temperature should increase the pneumatic branch pressure to drive cooling equipment. The included white cover ensures a finished, wall-ready appearance upon installation.
