Riello Photoelectric Cell Instruction Manual

Introduction

This manual provides essential information for the installation, operation, and maintenance of the Riello Photoelectric Cell, model 3007839. This component is designed for flame monitoring in various Riello burner systems and is compatible with specific analog control units. Please read this manual thoroughly before installation and use to ensure safe and proper operation.

Safety Information

Always observe the following safety precautions:

• Installation and maintenance should only be performed by qualified personnel.
• Disconnect power to the appliance before performing any installation, maintenance, or troubleshooting.
• Ensure all electrical connections comply with local and national electrical codes.
• Do not modify the photoelectric cell or its wiring.
• Protect the component from excessive heat, moisture, and mechanical damage.

Compatibility

The Riello Photoelectric Cell (part number 3007839) is compatible with the following Riello burner models and analog control units. It replaces part numbers 3007839 and 3007857.

• Burner Models:
  • BGK0.1 (3737511, 3737512, 357T1)
  • RG0.R (367T1)
  • RG0.1R (368T1)
  • RG0.2R (358T1)
  • RG0.3 (359T1)
  • RG0.3R (360T1)
  • RG1 (3736300, 363T1)
  • RG1RK (3736250, 362T1)
  • RG2D (3738000, 3738010, 3738050, 20052620, 380T1)
  • RG3F (393T1)
  • RG4F (396T1)
  • RG5S (399T1)
• Analog Control Units for Flame Monitoring:
  • 552SE (3001174)
  • 553SE (3001175)
• Important Note: This photoelectric cell is not suitable for digital control unit MO550.

Setup and Installation

The photoelectric cell is a critical component for flame detection. Proper installation is essential for safe and reliable operation.

1. Power Disconnection: Before beginning any work, ensure the main power supply to the burner system is completely disconnected and locked out to prevent accidental startup.
2. Access: Gain access to the existing photoelectric cell or the designated mounting location on the burner. This may involve removing covers or panels.
3. Removal of Old Component (if applicable): Carefully disconnect the wiring from the old photoelectric cell. Note the orientation and connection points. Gently remove the old cell from its mounting.
4. Installation of New Cell: Insert the new Riello Photoelectric Cell (3007839) into the designated mounting port. Ensure it is securely seated and oriented correctly to face the flame.
5. Wiring Connection: Connect the wiring harness of the new photoelectric cell to the corresponding terminals on the burner control unit. Refer to the burner's specific wiring diagram for precise connections. Ensure connections are tight and secure.
6. Secure Mounting: Verify that the photoelectric cell is firmly mounted and will not vibrate loose during operation.
7. Reassembly: Replace any covers or panels that were removed during the installation process.
8. Power Restoration and Testing: Restore power to the burner system. Perform a functional test according to the burner manufacturer's instructions to confirm the photoelectric cell is detecting flame correctly and the system is operating safely.

Figure 1: Close-up of the photoelectric cell, highlighting its compact design and identification label.

Figure 2: The photoelectric cell with its integrated cable and connector, ready for electrical hookup.

Figure 3: Another view of the photoelectric cell, illustrating the cable length and connector details.

Operating Principle

The Riello Photoelectric Cell operates as a flame sensor. When the burner ignites, the cell detects the presence of visible light emitted by the flame. This detection sends a signal to the compatible analog control unit (e.g., 552SE or 553SE), confirming flame presence and allowing the burner to continue its operation cycle. If the flame is not detected within a specified timeframe during ignition, or if it extinguishes during operation, the photoelectric cell signals the control unit to initiate a safety lockout, preventing unburned fuel accumulation and ensuring safety.

Maintenance

Regular maintenance helps ensure the longevity and reliable operation of the photoelectric cell.

• Inspection: Periodically inspect the photoelectric cell and its wiring for any signs of physical damage, corrosion, or loose connections.
• Cleaning: If the viewing window of the photoelectric cell becomes dirty or obscured by soot, carefully clean it with a soft, lint-free cloth. Do not use abrasive cleaners or solvents. Ensure the burner is off and cooled before cleaning.
• Replacement: The photoelectric cell is a wear-and-tear component. If it consistently fails to detect flame or causes nuisance lockouts despite proper cleaning and troubleshooting, it may need replacement.

Troubleshooting

If the burner system experiences issues related to flame detection, consider the following troubleshooting steps:

If troubleshooting steps do not resolve the issue, consult a qualified service technician.

Specifications