Johnson Controls T-4600-5 Thermostat

The Johnson Controls T-4600-5 is a high-precision, pneumatic thermostat designed for energy-efficient commercial HVAC applications. As part of the T-4000 series, this energy manager heating-cooling thermostat utilizes low volume output to deliver stable, proportional control in temperature-sensitive environments. Engineered for vertical mounting, the unit features dual bimetal sensing elements that allow for independent heating and cooling set points. This architectural design enables a pneumatic thermostat deadband, preventing energy waste by eliminating overlap between heating and cooling cycles. The T-4600-5 operates with direct heating and reverse cooling action, making it a versatile choice for contractors managing complex terminal unit sequences. With a 55 to 85°F dial range and adjustable sensitivities from 1 to 3 PSI/°F, this controller ensures a fine-tuned HVAC pneumatic control signal. The robust construction includes pneumatic feedback for improved accuracy and a hypodermic needle test port for streamlined field calibration and troubleshooting.

• Deadband Energy Conservation: Independent set points eliminate simultaneous heating and cooling, significantly reducing operational costs in large-scale facilities.
• Precise Dual Action: Features direct and reverse acting capabilities within a single unit to accommodate specific air handling requirements.
• Field Adjustability: Adjustable sensitivities and a 45 SCIM flow capacity (with .007" restrictor) allow technicians to customize the proportional output signal.
• Simplified Diagnostics: Includes accessible test ports for localized pressure readings without the need to remove the thermostat cover.

What is the standard air consumption for this model?
The T-4600-5 has a nominal air consumption of 50 SCIM. It requires a stable 13 to 25 Psig supply pressure for optimal performance.

Can the sensitivity be adjusted on-site?
Yes, the low volume output thermostat sensitivity is factory-calibrated but can be adjusted between 1 and 3 PSI/°F to match the control characteristics of the valve or damper actuator.

How does the direct and reverse action function in this specific model?
The T-4600-5 is configured for direct action on the heating side (pressure increases as temperature rises) and reverse action on the cooling side (pressure decreases as temperature rises).

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.