1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of the Caleffi 551022A Compact Brass Sweat Air Separator. This device is designed to efficiently remove air from hydronic heating, conditioning, and plumbing systems, contributing to system efficiency and longevity. By automatically forcing air bubbles to the top, the separator ensures they can be safely discharged, thereby cleansing and purifying the system.
2. Safety Information
Please read and understand all instructions before installing or operating this product. Failure to follow these instructions may result in property damage, personal injury, or death.
- Installation should only be performed by a qualified professional in accordance with local codes and regulations.
- Ensure the system is depressurized and cooled before attempting any installation or maintenance.
- Wear appropriate personal protective equipment (PPE) during installation and maintenance.
- Do not exceed the maximum operating temperature of 250°F (120°C) or the maximum operating pressure of 150 PSI (10 bar).
- Handle brass components carefully to avoid damage.
3. Product Overview
The Caleffi 551022A is a compact brass sweat air separator designed for efficient air removal in various hydronic applications. It features a durable brass body with a stainless steel interior for corrosion resistance and long-term performance. The unit is equipped with 0.75-inch sweat connections for secure integration into piping systems.
4. Specifications
| Feature | Detail |
|---|---|
| Manufacturer | Caleffi |
| Part Number | 551022A |
| Item Weight | 2 pounds |
| Product Dimensions | 3.13 x 3 x 6.88 inches |
| Connection Type | Sweat |
| Connection Size | 0.75-Inch |
| Flow Rate | 6 Gallons Per Minute |
| Maximum Temperature | 250°F (120°C) |
| Maximum Pressure | 150 PSI (10 bar) |
| Interior Material | Stainless steel |
5. Setup and Installation
Proper installation is crucial for the effective operation of the air separator. It is recommended that installation be performed by a qualified HVAC or plumbing professional.
- System Preparation: Ensure the hydronic system is completely drained and depressurized. Allow the system to cool to a safe temperature.
- Location: Install the air separator at the highest point of the system or where air naturally collects, typically on the supply side of the boiler or heat exchanger, before the expansion tank.
- Orientation: The separator must be installed in an upright position to allow the automatic air vent to function correctly.
- Connections: The Caleffi 551022A uses 0.75-inch sweat connections. Clean and prepare the pipe ends and the separator connections thoroughly. Apply appropriate flux and solder the connections securely, ensuring a watertight and airtight seal. Avoid overheating the separator during soldering.
- Filling the System: After installation, slowly refill the system, allowing air to escape through the automatic air vent. Monitor system pressure and check for leaks at all connections.
- Initial Operation: Once the system is filled and pressurized, operate it normally. The air separator will begin to remove dissolved and free air from the circulating fluid.
6. Operation
The Caleffi 551022A air separator operates automatically once installed in a circulating hydronic system. As water flows through the separator, air bubbles, both free and dissolved, are directed towards the internal stainless steel elements. These elements facilitate the separation of air from the fluid. The separated air rises to the top of the unit and is then discharged through the integrated automatic air vent. This continuous process helps maintain optimal system performance by preventing air-related issues such as noise, corrosion, and reduced heat transfer efficiency.
7. Maintenance
The Caleffi 551022A air separator is designed for minimal maintenance. However, periodic checks can help ensure its continued optimal performance.
- Visual Inspection: Periodically inspect the unit for any signs of external leaks or damage.
- Air Vent Check: Ensure the automatic air vent at the top of the separator is not blocked or obstructed. A small amount of moisture around the vent is normal during operation as air is discharged.
- System Flushing: If the hydronic system undergoes regular flushing, ensure the air separator is also flushed to prevent accumulation of debris that could impede its function.
8. Troubleshooting
If you experience issues with air in your hydronic system after installing the Caleffi 551022A, consider the following:
- Persistent Air in System:
- Check Installation Location: Ensure the separator is installed at the highest point of the system or a location where air naturally accumulates.
- Verify Air Vent Function: Confirm the automatic air vent is not clogged or stuck closed. Gently depress the pin on the vent (if applicable) to check for air release.
- System Pressure: Ensure the system pressure is within the recommended operating range. Low pressure can lead to air ingress.
- New System Air: In new systems, it may take some time for all dissolved air to be removed. Allow several days of operation.
- Leaks at Connections:
- Re-solder Connections: If leaks are present at sweat connections, the system must be drained, depressurized, and the connections re-soldered by a qualified professional.
9. Warranty and Support
For specific warranty information regarding your Caleffi 551022A Compact Brass Sweat Air Separator, please refer to the documentation provided at the time of purchase or contact Caleffi directly. For technical support or assistance, please reach out to your installer or an authorized Caleffi distributor.
