Johnson Controls T-4506-9007 Pneumatic Thermostat

The Johnson Controls T-4506-9007 is a dual-temperature, direct-acting pneumatic thermostat designed for precision climate control in commercial HVAC systems. Operating within a setpoint range of 12 to 30 degrees Celsius, this unit is engineered for horizontal mounting and provides reliable pneumatic room control for heating and cooling transitions. As a dual-pressure thermostat, it utilizes a bi-metal sensing element to maintain tight differentials, ensuring stable valve and damper actuator positioning. This model features field-adjustable sensitivity and an internal fine-mesh filter to prevent orifice clogging from pneumatic control air contaminants. The T-4506-9007 is a drop-in replacement for older Johnson Controls pneumatic units, streamlining retrofitting T-4000 series projects. By managing day-night changeover or summer-winter cycles via supply pressure variations, this direct acting controller optimizes energy consumption while maintaining occupant comfort in large-scale air handling applications.

• Dual-temperature control allows for seamless HVAC seasonal changeover without manual recalibration.
• Heavy-duty bi-metal sensing provides long-term stability and resistance to mechanical drift.
• Horizontal mounting configuration ensures perfect alignment with existing terminal boxes and wall plates.
• Compatible with 13 psi and 18 psi supply pressures for standard pneumatic control loops.
• Integral pneumatic air filter protects internal orifices, reducing service calls for line debris issues.

Is the T-4506-9007 compatible with vertical wall boxes?
This specific model is calibrated for horizontal mounting. For vertical applications, a different T-4000 series model should be selected to ensure proper scale orientation and sensing accuracy.

What is the typical air consumption for this pneumatic thermostat?
The T-4506-9007 is a non-relay type thermostat, typically consuming approximately 20 scim (5.5 mL/s) of control air, depending on system pressure and pilot flow.

Can the setpoint range be limited for public spaces?
Yes, this unit supports mechanical setpoint stops to restrict the user adjustment range, preventing excessive energy use in high-traffic areas.

Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.