The Johnson Controls T-5800-1 Controller is a high-performance single input proportional receiver-controller engineered for precise management of pneumatic HVAC systems. Designed for versatility in the field, this unit interfaces with remote transmitters to monitor and control variables including temperature, humidity, and pressure through a 3 to 15 psig controlled variable (CV) input. Technicians will appreciate the field-selectable action, allowing for seamless switching between direct or reverse acting modes to match specific application requirements without replacing hardware. The adjustable gain—ranging from 0.5:1 to 15:1—provides the necessary resolution to stabilize loops, with a factory default typically set at 10:1 for standard responsiveness. Built with a rugged Noryl body and a transparent protective cover, the T-5800-1 includes hypodermic needle test points and an integrated output pressure gauge for rapid diagnostic checks. Its ability to provide restricted supply air to low-volume transmitters simplifies installations by reducing the required air line connections, making it a reliable staple for surface-mount pneumatic control systems. Key Benefits Broad Compatibility: Processes standard 3 to 15 psig signals from a wide range of pneumatic transmitters. Field Flexibility: Easily toggled between direct and reverse acting configurations to suit different terminal equipment. Precision Tuning: Features an adjustable gain for fine-tuning system response and minimizing offset in proportional-only loops. Simplified Maintenance: Includes built-in test points and a clear cover for quick visual inspections and pressure verification. Cost-Effective Installation: Integral restrictive orifice allows for single-line connections to non-relay transmitters. Common Questions How do I change the action from direct to reverse acting on a T-5800-1? The action is field-selectable by interchanging the internal tube connections on the lower spigots of the controller body as specified in the technical manual. Can the T-5800-1 support a remote set point? Yes, while factory-set for a local set point of 9 psig, the unit includes a jumper and dial options to enable remote set point adjustment via an external pneumatic signal. What air supply is required for proper operation? A clean, dry 20 psig supply air source is standard. Ensure the external oil-indicating filter is checked regularly to prevent contamination of the controller's internal orifices. 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.
