Overview
The Johnson Controls T-4002-9014 is a high-volume output, single-temperature pneumatic room thermostat designed to provide proportional control of pneumatic valves and damper actuators. This reverse-acting controller is specifically engineered for vertical mounting and is a reliable solution for individual space temperature control in commercial and industrial HVAC systems. It is part of the legacy T-4000 series, known for its durability and precision in heating and cooling applications.
Features
- Reverse-acting control operation to modulate pneumatic devices
- High-volume air flow output suitable for larger pneumatic systems
- Vertical mounting orientation for standard wall installations
- Exposed adjustment dial for convenient temperature setpoint changes
- Proportional output signal responds accurately to load changes
- Adjustable sensitivity to fine-tune system performance
- Two-pipe configuration for streamlined air transmission
Specifications
- Brand: Johnson Controls
- Model: T-4002-9014
- Type: Pneumatic Room Thermostat
- Action: Reverse
- Mounting: Vertical
- Air Flow: High Volume (400 SCIM / 109 mL/s)
- Supply Pressure: 13 to 25 psig (91 to 175 kPa); 20 psig nominal
- Air Consumption: 20 SCIM (5.5 mL/s)
- Temperature Range: 55 to 85 degrees Fahrenheit (12 to 30 degrees Celsius)
- Connections: Barbed fittings for 5/32 in. O.D. polytubing
- Dimensions: 3 1/8 in. W x 2 1/8 in. H x 1 3/4 in. D
Applications
- Commercial heating and cooling systems requiring pneumatic control
- Office buildings, schools, and institutional facilities
- Control of pneumatic valves and damper actuators
- High-volume air distribution systems
- Retrofit and replacement for legacy Johnson Controls pneumatic thermostats


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