The Round-in/Round-out VAV unit (VRRF) is a retrofit product designed to simplify upgrading of an existing old-style VariTrane™ units to DDC. It includes an 18-gauge cylinder with flow sensing ring and a control enclosure with the following factory-INSTALLED, WIRED, and TESTED options:
- Comm4 or Comm5 VAV Controllers
- Control Power Transformer
- Toggle Disconnect Switch
- Control Line Fuse
- Actuator
- Pressure Transducer
- Wireless Receiver
- Factory download of controller sequence, setpoints, addresses, etc.