1. Introduction
This manual provides essential information for the proper installation, operation, and maintenance of the Caleffi 573009A 1/2-Inch AutoFill and Back Flow Preventer Combination, Sweat. This device is designed to automatically fill hydronic heating systems and prevent the backflow of non-potable water into the potable water supply. Please read this manual thoroughly before installation and retain it for future reference.
2. Safety Information
Always observe the following safety precautions to reduce the risk of injury or damage to the product:
- Installation should only be performed by a qualified professional in accordance with local plumbing codes and regulations.
- Ensure the main water supply is turned off and the system is depressurized before beginning any installation or maintenance.
- Wear appropriate personal protective equipment (PPE), such as safety glasses and gloves, during installation and maintenance.
- Do not modify the device in any way. Use only genuine Caleffi replacement parts.
- Verify all connections are secure and leak-free after installation.
3. Product Overview
The Caleffi 573009A is a high-quality component for heating and plumbing systems, combining an automatic filling valve with a backflow preventer. It is constructed with durable materials designed for resistance to heat and high discharge pressure.
Image: The Caleffi 573009A AutoFill and Back Flow Preventer Combination unit, showing its brass construction and integrated components.
Key Features:
- Resistance to heat and high discharge pressure: Ensures durability and reliable performance under demanding conditions.
- Anti-stick materials: Contributes to smooth operation and longevity of internal components.
- Removable filter cartridge: Allows for easy cleaning and maintenance, ensuring optimal performance.
- Seals in high resistance elastomer: Provides a secure, leak-proof seal for enhanced reliability.
4. Setup and Installation
The Caleffi 573009A is designed for sweat connections. Professional installation is highly recommended to ensure compliance with all applicable plumbing codes and proper system function.
General Installation Steps:
- Prepare the System: Turn off the main water supply to the heating system and drain the system to depressurize it.
- Select Location: Choose an accessible location for installation, typically on the cold water supply line to the boiler or heating system. Ensure there is adequate space for future maintenance.
- Prepare Pipes: Clean and deburr the ends of the pipes where the sweat connections will be made. Apply appropriate flux.
- Connect the Unit: Solder the Caleffi 573009A into the water supply line, ensuring the flow direction arrow on the unit matches the direction of water flow.
- Inspect Connections: After soldering, allow the connections to cool completely.
- Re-pressurize and Test: Slowly open the main water supply valve to refill the system. Check all connections for leaks. The autofill function will automatically bring the system pressure to the set point.
5. Operating Instructions
The Caleffi 573009A operates automatically once installed and the system is pressurized.
Automatic Filling:
The autofill component maintains the desired system pressure by automatically adding water when the pressure drops below the set point. The factory preset pressure is typically suitable for most residential applications, but it can be adjusted if necessary by rotating the adjustment knob on the top of the unit.
Backflow Prevention:
The integrated backflow preventer ensures that non-potable water from the heating system cannot flow back into the potable water supply, protecting the public water system from contamination. This function operates passively based on pressure differentials.
6. Maintenance
Regular maintenance helps ensure the longevity and optimal performance of your Caleffi 573009A unit.
- Filter Cartridge Cleaning: The unit features a removable filter cartridge. Periodically, or if you notice reduced flow or improper filling, the filter should be removed and cleaned. Refer to the detailed instructions provided with the product for specific steps on filter removal and cleaning. Ensure the water supply is off and the system is depressurized before attempting to remove the filter.
- Leak Inspection: Regularly inspect the unit and its connections for any signs of leaks. Address any leaks immediately to prevent water damage and maintain system integrity.
- Annual Check-up: It is recommended to have the unit inspected annually by a qualified plumbing professional to ensure proper function of both the autofill and backflow prevention components.
7. Troubleshooting
If you encounter issues with your Caleffi 573009A, consider the following common troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| System not filling / Low pressure | Water supply off; Filter clogged; Pressure setting too low; Faulty unit. | Ensure water supply is on; Clean filter cartridge; Adjust pressure setting; Contact a professional for inspection. |
| Constant dripping / Leaking | Loose connections; Damaged seals; Debris in valve seat. | Check and tighten connections; Inspect and replace seals if damaged; Clean valve seat (professional assistance recommended). |
| Water hammer / Noise | High water pressure; Air in system; Improper installation. | Consider installing a pressure reducing valve upstream; Bleed air from the system; Consult a professional. |
If the problem persists after attempting these solutions, contact a qualified plumbing professional for assistance.
8. Specifications
The following are the technical specifications for the Caleffi 573009A AutoFill and Back Flow Preventer Combination:
- Model Number: 573009A
- Part Number: 573009A
- Connection Size: 1/2-Inch Sweat
- Material: Metal (Brass)
- Item Weight: Approximately 3.4 pounds (1.54 kg)
- Product Dimensions: Approximately 9.1 x 2 x 5.5 inches (23.1 x 5.1 x 14 cm)
- Manufacturer: Caleffi
- Item Package Quantity: 1
9. Warranty and Support
For information regarding the product warranty, please refer to the warranty documentation included with your purchase or visit the official Caleffi website. For technical support or service inquiries, please contact Caleffi customer service or your authorized Caleffi dealer.
