The APR Control® valve in this unit has been factory installed by Southeast Coil Coating, a Rawal Devices factory-authorized equipment modifier. Use this page for quick access to product information, installation guidance, troubleshooting resources, and details about the modifier who integrated it into this system.
What is the APR Control?
The APR Control is a mechanical, external compressor unloader designed to provide continuous capacity modulation for DX air conditioning systems. By delivering true load matching, the APR Control:
- Improves dehumidification
- Enhances overall system performance
- Reduces energy consumption during part-load operation.
Manufactured exclusively by Rawal Devices, Inc., the APR Control® valve is supplied through OEMs, distributors, and factory-authorized modifiers who integrate it directly into HVAC equipment.
Although this APR Control has been factory installed, HVAC contractors and service technicians can install the APR Control in the field as a retrofit solution on existing DX equipment.
Why the APR Control® Valve Was Installed in this Unit?
Key Benefits:
✅ Improves comfort & dehumidification in a wide variety of applications
✅ Extends the life of your existing HVAC systems (compressor protection)
✅ Eliminates service call-backs and frequent downtime
✅ Reduces energy consumption, even in varying climates
✅ Maintains stable temperatures and avoid coil freezing in VAV, 100% outside air, and high-ACH applications
✅ Proven results in commercial, industrial, and institutional applications
Ideal Applications:
- Commercial office buildings
- K-12 Schools and Universities
- Hospitals and Healthcare Buildings
- Data Centers, Labs, and Cleanrooms
- Mixed-Use Spaces
- Restaurants and Kitchens
- and many more…
About Southeast Coil Coating, Inc.
Who They Are
Southeast Coil Coating, Inc. is an HVAC equipment modification provider specializing in coil coating and custom HVAC equipment modification services.
What They Do
They apply protective coatings for enhanced durability and corrosion resistance in particularly demanding environments. And of course they can provide custom HVAC equipment modifications, including factory-installed capacity control solutions (as in the APR Control).
They work with packaged equipment, air handlers, chillers, and other HVAC systems requiring application-specific mechanical and coating solutions to improve long-term system performance.
APR Control Resources:
Adjustment & Commissioning
Proper adjustment and commissioning of the APR Control® ensures accurate load matching and optimal system performance. Use this guide for detailed instructions.
Troubleshooting the APR Control®
Quickly diagnose and resolve common service issues using this comprehensive troubleshooting resource.
Contact Rawal Devices for any assistance with the APR Control®, whether that is for adjustment, troubleshooting, or you simply want to learn more about our device. Our technical team is happy to help and available during normal business hours.
