Johnson Controls T-3100-2 Non-Relay Direct Acting Pneumatic Thermostat

Description

The Johnson Controls T-3100-2 is a non-relay, direct acting pneumatic thermostat engineered for reliable temperature control in commercial and industrial HVAC applications. Designed for use in pneumatic control systems, this thermostat delivers precise, proportional control without the need for an internal relay, simplifying installation and reducing potential failure points.

Key Features

• Non-relay, direct acting pneumatic control for straightforward, dependable operation
• Temperature sensing range of 60°F to 150°F to accommodate a wide variety of HVAC applications
• Maximum supply pressure rating of 25 PSIG for safe, code-compliant system integration
• 42″ capillary length provides flexible sensor placement relative to the thermostat body
• 1/8″ FPT slave air connection for easy integration with pneumatic control networks
• Barbed restrictor tee fitting compatible with 1/4″ OD polytubing for straightforward branch connections
• Restrictor branch and open branch configuration supports versatile system layouts

Pneumatic System Compatibility

The T-3100-2 is built for seamless integration into pneumatic HVAC control systems. The barbed restrictor tee for 1/4″ OD polytubing simplifies branch connections, while the 1/8″ FPT slave air port allows this thermostat to work in tandem with other pneumatic devices on the same control loop. The direct acting design means output pressure increases as the sensed temperature rises, making it ideal for cooling applications or systems requiring proportional pneumatic signal output.

Specifications

• SKU: T-3100-2
• Brand: Johnson Controls
• Type: Non-Relay Pneumatic Thermostat
• Action: Direct Acting
• Temperature Range: 60°F to 150°F
• Maximum Supply Pressure: 25 PSIG
• Capillary Length: 42 inches
• Slave Air Connection: 1/8″ FPT
• Branch Connection: Barbed Restrictor Tee for 1/4″ OD Polytubing
• Branch Type: Restrictor Branch and Open Branch

Why Choose the Johnson Controls T-3100-2?

Johnson Controls is a globally recognized leader in building automation and HVAC controls. The T-3100-2 reflects their commitment to precision engineering and long-term reliability. Whether you are maintaining an existing pneumatic system or specifying controls for a new commercial installation, this thermostat delivers the accuracy and durability that HVAC professionals demand.