Pression Chaudière : La baisser ou l’augmenter sur une Saunier Duval
Introduction and Purpose of the Video
In this section, Philippe introduces the topic of lowering boiler pressure and explains why it is sometimes necessary, such as for radiator drainage or system maintenance.
Why Lower Boiler Pressure?
- Lowering boiler pressure can facilitate tasks like radiator draining or system maintenance.
- The pressure in the boiler is associated with the pressure in the entire closed circuit installation.
Accessing the Safety Valve
Philippe explains how to access the safety valve by removing the casing of the boiler.
Steps to Access Safety Valve
- Turn off the boiler.
- Remove the casing by unscrewing two small screws located at the front.
- This provides better access to tilt and pull out the control panel, creating more space to operate and drain.
Locating and Operating Safety Valve
Philippe demonstrates where to find and how to operate the safety valve.
Locating and Operating Safety Valve
- On wall-mounted boilers, pivot the control panel outward to reveal the safety valve located at the bottom.
- The safety valve is marked with a pressure rating (e.g., 3 bars).
- Pull on its lever to release pressure from the system.
- Ensure that there is a proper drainage connection for water discharge during this process.
Checking Pressure Reduction and Refilling
Philippe explains how to check if pressure has been reduced successfully and how to refill it if needed.
Checking Pressure Reduction
- Verify that pressure has decreased by turning on your control panel. It should display "0 bar" or no water shortage indication.
Refilling Pressure
- To refill, locate a blue plastic piece under the boiler and turn it counterclockwise to fill the system.
- Alternatively, some boilers may have a small valve between the return and cold water pipes that can be opened to refill.
- Monitor pressure increase on the control panel until it reaches 1 bar or as recommended by your boiler's manual.
- Close the refill valve once desired pressure is reached.
Final Steps and Conclusion
Philippe provides final instructions for setting up the boiler for heating.
Final Steps
- If you want to switch your boiler to heating mode, press the "mode" button and select the radiator symbol.
- The boiler is now ready for operation in both hot water production and heating modes.
Conclusion
Lowering boiler pressure is essential for tasks like radiator draining or system maintenance. By following these steps, you can safely reduce and refill pressure in your boiler system. Remember to consult your specific boiler's manual for detailed instructions.
Timestamps are approximate and may vary slightly depending on video playback.