Johnson Controls R-3030-1 Reversing Relay

The Johnson Controls R-3030-1 Reversing Relay is a high-performance pneumatic reversing relay engineered for precise signal inversion in complex HVAC control loops. Operating as a 1:1 ratio inverter, this auxiliary device is essential for technicians needing to flip the output of a pneumatic controller from direct to reverse acting, or vice versa, without losing signal integrity. Its high-capacity design features a 2000 Scim output flow capacity, making it an ideal volume amplifier for driving multiple controlled devices or long transmission lines where speed of response is critical. Designed for industrial-grade durability, it utilizes a 20 Psig nominal supply pressure and maintains an ultra-low 10 Scim air consumption to maximize system efficiency. This relay is a staple in dual-duct VAV sequencing and for converting Constant Air Volume (CAV) systems to Variable Air Volume (VAV) architecture. The integrated compression fittings are specifically sized for 1/4" OD polytubing, ensuring a leak-free, professional installation on any mounting surface.

• Precise Signal Inversion: Functions as a high-accuracy 1:1 inverter and inverse sequencer for flexible controller logic.
• Enhanced Flow Capacity: The 2000 Scim output acts as a volume amplifier to reduce lag in large pneumatic branches.
• Efficient Operation: Low air consumption (10 Scim) reduces the load on the main compressor and improves long-term reliability.
• Versatile Compatibility: Native support for 1/4" OD tubing and a universal mounting bracket simplifies field retrofits.
• Field Adjustable: Features a factory-set 10 Psig switchover point that can be field-tuned (5-15 Psig) to meet specific sequencing requirements.

How do I adjust the switchover point on the R-3030-1?
Technicians can field-calibrate the input/output point by adjusting the internal screw. The factory setting is 10 Psig, but it can be tuned between 5 and 15 Psig to match your sequencing needs.

Can this relay be used as a standalone volume booster?
While it provides a 2000 Scim amplified flow, its primary function is to reverse the signal. For simple 1:1 amplification without inversion, a standard booster relay is typically preferred, though the R-3030-1 excels in applications requiring both amplification and signal reversal.

Is the R-3030-1 compatible with existing CAV to VAV conversions?
Yes, this unit is specifically designed to work with retrofit dampers to transition older constant volume systems into modern, energy-efficient VAV configurations by reversing the pressure signal as the input increases.

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.