1. Introduction
This manual provides essential information for the safe and efficient installation, operation, and maintenance of the Belimo B330+AFRB24-SR Characterized Control Valve (CCV). Please read this manual thoroughly before proceeding with any procedures to ensure proper functionality and to prevent potential damage or injury.
The Belimo B330+AFRB24-SR is a 1.25-inch, 3-way characterized control valve designed for precise flow control in HVAC systems. It features a 19 Cv rating, spring return functionality, and operates on a 24V power supply with a 2-10V control signal.
2. Safety Information
Warning: Failure to follow these instructions may result in property damage, personal injury, or death.
- Installation and servicing must be performed by qualified personnel only.
- Disconnect power before installation, servicing, or removing the actuator.
- Ensure the system pressure is relieved before working on the valve.
- Wear appropriate personal protective equipment (PPE).
- Do not exceed the specified voltage or pressure ratings.
3. Product Overview
The Belimo B330+AFRB24-SR is a high-performance 3-way ball valve with an integrated spring return actuator. It is designed to mix or divert fluid flow in various applications.
Figure 1: Belimo B330+AFRB24-SR 3-Way Characterized Control Valve with Actuator. This image displays the complete valve assembly, featuring the silver-colored 3-way ball valve body connected to the orange and grey spring return actuator. The valve has threaded connections for piping, and the actuator includes electrical connection points.
Key Features:
- Valve Type: 3-Way Characterized Control Valve (CCV)
- Nominal Pipe Size: 1.25 inches
- Flow Capacity (Cv): 19
- Actuator Type: Spring Return
- Power Supply: 24V AC/DC
- Control Signal: 2-10V DC proportional
- Function: Mixing or diverting applications
4. Setup and Installation
4.1 Mounting
- Mount the valve in an accessible location for maintenance and inspection.
- Ensure adequate clearance for wiring and actuator removal.
- The valve can be mounted in any orientation, but it is recommended to avoid mounting with the actuator below the valve body to prevent condensation issues.
4.2 Piping Connections
- Ensure the piping system is clean and free of debris before installing the valve.
- Connect the valve to the piping using appropriate fittings for 1.25-inch connections.
- Apply pipe sealant or Teflon tape to threaded connections to prevent leaks.
- Observe flow direction indicators on the valve body, if present, for correct installation in mixing or diverting applications.
4.3 Electrical Wiring
Caution: Disconnect power before performing any wiring procedures.
- The actuator requires a 24V AC/DC power supply. Connect the power wires to the designated terminals on the actuator.
- Connect the 2-10V DC control signal wires to the appropriate input terminals.
- Ensure all wiring complies with local electrical codes and standards.
- Refer to the wiring diagram provided with the product for specific terminal assignments.
5. Operating Instructions
The Belimo B330+AFRB24-SR valve operates based on a 2-10V DC proportional control signal. The actuator modulates the valve position in response to this signal.
- Control Signal (2-10V DC):
- A 2V signal typically corresponds to the minimum flow position (e.g., port A fully open, port B fully closed for mixing).
- A 10V signal typically corresponds to the maximum flow position (e.g., port B fully open, port A fully closed for mixing).
- Intermediate voltage signals (e.g., 6V) will position the valve proportionally between these extremes.
- Spring Return Function: In the event of power loss, the spring return mechanism will automatically move the valve to a pre-defined safe position (e.g., fully open or fully closed on a specific port, depending on configuration).
- Manual Override: Some actuators may include a manual override lever or button. Consult the actuator's specific documentation for details on manual operation.
6. Maintenance
The Belimo B330+AFRB24-SR valve and actuator are designed for long-term, maintenance-free operation under normal conditions. However, periodic checks are recommended.
6.1 Routine Checks
- Visual Inspection: Periodically inspect the valve and actuator for any signs of leaks, corrosion, or physical damage.
- Actuator Operation: Observe the actuator's movement to ensure it responds smoothly and accurately to the control signal.
- Connections: Check electrical and piping connections for tightness and integrity.
6.2 Cleaning
Clean the exterior of the valve and actuator with a damp cloth. Do not use abrasive cleaners or solvents that could damage the materials.
7. Troubleshooting
This section provides solutions to common issues. For problems not listed here, contact Belimo technical support.
| Problem | Possible Cause | Solution |
|---|---|---|
| Actuator does not move. | No power supply. Incorrect wiring. No control signal. | Check 24V power supply. Verify wiring against diagram. Check 2-10V control signal from controller. |
| Valve leaks. | Loose pipe connections. Damaged valve body/seals. | Tighten pipe connections, apply sealant. Inspect valve for damage; replacement may be necessary. |
| Incorrect flow or control. | Incorrect control signal. Valve installed backward. Debris in valve. | Verify control signal range and output. Check valve orientation against flow arrows. Flush system or inspect valve for obstructions. |
8. Specifications
| Parameter | Value |
|---|---|
| Model | B330+AFRB24-SR |
| Valve Type | 3-Way Characterized Control Valve (CCV) |
| Nominal Pipe Size | 1.25 inches |
| Flow Capacity (Cv) | 19 |
| Actuator Type | Spring Return |
| Power Supply | 24V AC/DC |
| Control Signal | 2-10V DC Proportional |
| Number of Ports | 3 |
| Manufacturer | Belimo |
9. Warranty and Support
9.1 Warranty Information
Belimo products are covered by a limited warranty against defects in materials and workmanship. The specific terms and duration of the warranty may vary by region and product. Please refer to the official Belimo website or contact your local distributor for detailed warranty information.
9.2 Technical Support
For technical assistance, troubleshooting guidance, or to report a product issue, please contact Belimo technical support. Contact information can typically be found on the official Belimo website or through your product supplier.
When contacting support, please have the product model number (B330+AFRB24-SR) and a detailed description of the issue ready.
