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Gas valve 845 SIGMA Baxi (0.845.063)
Description: The gas valve 845 SIGMA Baxi is a multifunctional gas supply control unit designed for use in Baxi boilers. It features two automatic shut-off valves, a pressure regulator, and an electrically controlled power modulation device. This valve allows for precise adjustment of maximum and minimum output pressure levels, ensuring reliable operation of the gas supply system.
Technical specifications
| Connections: | G 3/4 ISO 228 |
| Installation position: | Any |
| Gas type (families): | I, II, and III |
| Maximum inlet gas pressure: | 60 mBar |
| Ambient temperature: | -15…60°C |
How to choose the right product
When selecting the gas valve 845 SIGMA Baxi, consider the following aspects:
- Compatibility with your Baxi boiler.
- Type and size of the thread for connection (G 3/4 ISO 228).
- Check the maximum inlet pressure (60 mBar) to ensure it meets system requirements.
- Ensure the valve is suitable for the type of gas being used (I, II, or III).
Possible failure causes and prevention methods
The valve may fail for several reasons:
- Wear of internal components due to high pressure or temperature.
- Contamination or blockage of the valve caused by impurities in the gas.
- Malfunctions in the electrical system controlling the valve.
To prevent valve wear, it is recommended to:
- Regularly check and clean the gas supply system from contaminants.
- Monitor gas pressure and ensure it complies with standards.
- Perform periodic maintenance on the boiler and its components.
Difficulty of part replacement
Replacing the gas valve 845 SIGMA Baxi requires certain skills and knowledge. It is recommended to follow this order for replacement:
- Disconnect the gas and electricity supply to the boiler.
- Remove the old valve by disconnecting all connections.
- Install the new gas valve, following the specified connections.
- Reconnect the electrical wires and check their reliability.
- Turn on the gas and electricity supply, and check the operation of the valve.
The difficulty of replacement can be assessed as moderate, and it is advisable to consult qualified professionals if you lack the necessary experience.