Description
The Johnson Controls T-3111-1 is a pneumatic thermostat and valve actuator combination unit engineered for reliable, precise temperature control in commercial HVAC systems. Designed with a direct-acting control action, this unit increases its output signal in response to a rise in sensed temperature, making it ideal for cooling applications or systems requiring proportional pneumatic control.
Key Features
- Direct-acting control action — output pressure increases as temperature rises
- Remote bulb sensing element for accurate temperature measurement at a distance from the controller body
- External setpoint adjustment for easy, tool-accessible calibration without removing the cover
- Valve top mounting design — integrates directly onto compatible pneumatic valve actuators for a compact, streamlined installation
- Single temperature and single pressure output for straightforward pneumatic circuit integration
- Suitable for use in commercial building automation and pneumatic HVAC control systems
Application
The T-3111-1 is well-suited for commercial HVAC applications including air handling units, fan coil systems, and hydronic heating and cooling circuits where pneumatic control is preferred or required. The remote bulb configuration allows the sensing element to be positioned precisely at the point of measurement — in a duct, pipe, or space — while the controller and actuator remain mounted on the valve body.
Benefits
- Combines thermostat and valve actuator into a single compact assembly, reducing installation time and component count
- External setpoint adjustment simplifies commissioning and field calibration
- Proven pneumatic technology offers robust, reliable performance in demanding commercial environments
- Valve top mounting eliminates the need for separate actuator brackets or linkages
- Compatible with standard pneumatic control air supply systems
Product Details
- Brand: Johnson Controls
- SKU: T-3111-1
- Control Type: Pneumatic
- Action: Direct Acting
- Sensing Method: Remote Bulb
- Setpoint Adjustment: External
- Mounting: Valve Top
- Output: Single Temperature / Single Pressure
Reviews
There are no reviews yet.