1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of the Belimo B330+AFRB24 Characterized Control Valve (CCV). This 1.25-inch, 3-way ball valve features a 19 Cv flow coefficient and is equipped with a 24V On/Off spring return actuator. Adherence to these instructions ensures optimal performance and longevity of the device.

This image displays the Belimo B330+AFRB24 1.25 inch 3-Way Ball Valve, featuring a silver-colored valve body with a 1.25-inch connection and an orange and gray spring return actuator mounted on top. The actuator includes electrical connections and a manual override lever.
2. Setup and Installation
Proper installation is crucial for the reliable operation of the Belimo B330+AFRB24 valve. Consult local codes and regulations before beginning installation.
2.1 Safety Precautions
- Ensure all power to the system is disconnected before installation or servicing.
- Wear appropriate personal protective equipment (PPE).
- Installation should be performed by qualified personnel.
2.2 Mechanical Installation
- Mount the valve in an accessible location, ensuring sufficient space for maintenance and wiring.
- Ensure the valve body is properly supported and aligned with the piping.
- Connect the 1.25-inch pipe fittings to the valve ports. Ensure connections are leak-tight.
- Observe flow direction indicators on the valve body, if present, to ensure correct installation within the system.
2.3 Electrical Wiring
The B330+AFRB24 actuator operates on 24V power and uses an On/Off control signal.
- Connect the 24V power supply to the designated terminals on the actuator. Refer to the wiring diagram provided with the actuator for specific terminal assignments.
- Connect the On/Off control signal wires according to the system's control logic.
- Ensure all electrical connections are secure and insulated to prevent short circuits.
- Verify the power supply voltage matches the actuator's requirements (24V).
3. Operating Instructions
The Belimo B330+AFRB24 valve is designed for On/Off control applications with a spring return safety function.
3.1 On/Off Control
- When power is applied to the actuator, the valve will drive to its open or closed position, depending on the wiring configuration.
- When power is removed, the spring return mechanism will automatically drive the valve to its pre-set fail-safe position (typically fully open or fully closed).
3.2 Manual Override
The actuator may include a manual override lever or button. Consult the specific actuator documentation for instructions on how to manually position the valve in case of power failure or for testing purposes. Always ensure power is disconnected before attempting manual override.
4. Maintenance
The Belimo B330+AFRB24 valve and actuator are designed for minimal maintenance. Regular inspection is recommended to ensure continued reliable operation.
- Periodically inspect the valve and actuator for any signs of leakage, corrosion, or physical damage.
- Check electrical connections for tightness and integrity.
- Ensure the valve operates smoothly through its full range of motion.
- Clean any accumulated dust or debris from the actuator housing to prevent overheating.
No lubrication or internal adjustments are typically required for the valve or actuator.
5. Troubleshooting
Refer to the following table for common issues and their potential solutions.
| Problem | Possible Cause | Solution |
|---|---|---|
| Valve does not move | No power to actuator Incorrect wiring Actuator fault | Check 24V power supply Verify wiring connections against diagram Contact technical support if power and wiring are correct |
| Valve leaks | Improper pipe connection Damaged valve seals | Check and tighten pipe connections Valve replacement may be necessary |
| Valve does not fully open/close | Obstruction in valve Actuator calibration issue (unlikely for On/Off) Low voltage | Inspect valve for debris Verify 24V power supply is stable Contact technical support |
6. Specifications
| Specification | Detail |
|---|---|
| Model | B330+AFRB24 |
| Brand | Belimo |
| Valve Type | Ball Valve, 3-Way, Characterized Control Valve (CCV) |
| Connection Size | 1.25 inches |
| Flow Coefficient (Cv) | 19 |
| Actuator Type | Spring Return |
| Voltage | 24V |
| Control Type | On/Off |
| Number of Ports | 3 |
| ASIN | B009XETT7E |
7. Warranty and Support
For detailed warranty information, technical support, or service inquiries, please refer to the official Belimo website or contact your authorized Belimo distributor. Keep your purchase receipt for warranty claims.







