The Johnson Controls T-4002-201 is a direct-acting, single-temperature pneumatic thermostat designed for horizontal mounting in HVAC control applications. It operates over a dial range of 55°F to 85°F and is commonly used to modulate pneumatic control devices in response to room temperature. This model includes integrated supply and output air connections for straightforward installation in building automation systems.
Technical Specifications
- Model: T-4002-201
- Type: Pneumatic thermostat
- Action: Direct acting
- Mounting Orientation: Horizontal
- Dial Range: 55°F to 85°F
- Control Type: Single temperature
- Air Connections: Integrated supply and output ports
- Main Air Pressure: Typically 20 psi
- Material: Thermoplastic housing with metal mounting bracket
Key Features
- Direct-acting thermostat increases output pressure as room temperature rises
- Horizontal wall-mount design with clear temperature dial
- Integrated air connections simplify field installation
- Provides precise pneumatic control for dampers, valves, and actuators
- Adjustable setpoint via front-mounted dial
- Compact and durable for use in a wide range of environments
Compatible Components & Accessories
- Johnson Controls pneumatic actuators and volume controllers
- Air line tubing and fittings
- Room sensor covers and accessories
- Pneumatic receiver controllers and relays
Industry Applications
- Commercial and institutional HVAC systems
- Pneumatic building automation systems
- Temperature control in office, educational, or healthcare facilities
- Retrofits in existing pneumatic temperature control networks
Installation & Maintenance Notes
- Mount horizontally on a flat interior wall at standard room height
- Connect supply and branch air lines per system diagram
- Ensure main air supply pressure remains within recommended range
- Periodically check calibration and response for accuracy
- Avoid exposure to excessive moisture, dust, or vibration
We ship this product worldwide! Delivery is normally stock.
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