Johnson Controls R-317-1 Controller

The Johnson Controls R-317-1 Air Flow Controller is a precision proportional direct acting pneumatic controller designed for low-pressure sensing in commercial HVAC systems. Engineered for high-accuracy air velocity control, this unit operates within a sensing range of .05" WC to 1" WC, making it a reliable component for static pressure control and VAV system maintenance. The R-317-1 features a 25 psig maximum supply pressure and delivers a 45 SCIM output flow capacity when utilized with the included .007" restrictor. This pneumatic instrument is essential for contractors troubleshooting airflow imbalances or performing a pnuematic air flow controller replacement. By maintaining tight tolerances in low-pressure airflow sensing, the R-317-1 ensures consistent damper or actuator modulation. Its robust construction facilitates seamless integration into existing commercial HVAC pneumatic controls, providing stable output signals without the drift common in lower-grade components.

• Precision Sensitivity: Optimized for low-differential pressure monitoring between .05" and 1" WC.
• Consistent Output: Ships with a .007-inch restrictor to maintain a steady 45 SCIM flow capacity for accurate terminal unit control.
• Field Reliability: Direct acting proportional logic ensures predictable performance in variable air volume applications.
• Rugged Design: Built to handle supply pressures up to 25 psig, fitting standard pneumatic plant specifications.

How do I calibrate the R-317-1 for specific static pressure setpoints?
Calibration is handled via the internal adjustment screw; use a high-accuracy manometer to verify the .05" to 1" WC range during field setup.

Can the R-317-1 be used in a reverse-acting configuration?
No, this specific model is a direct-acting controller. For reverse-acting requirements, a pneumatic relay or a different R-series model must be specified.

Is the .007" restrictor required for operation?
Yes, the furnished restrictor is necessary to achieve the rated 45 SCIM output and ensure the proportional response matches the pressure drop across the sensing element.

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.