Topping up boiler pressure with a key involves using a specific key to open a filling valve, as demonstrated in the video titled, "Older Worcester boiler? HOW to fill up the pressure using the white key." Here’s a step-by-step guide based on the provided reference:
Steps to Top Up Boiler Pressure
- Locate the Filling Key/Knob: The reference mentions a "little white knob" next to the filling loop. This is what you need to operate.
- Prepare to Fill: Ensure the system is ready to receive water.
- Turn the Key: Twist the white knob clockwise two or three times.
- Listen for Water: You should hear the water flowing into the boiler. This indicates that the pressure is being topped up.
- Monitor the Pressure Gauge: Keep an eye on your boiler's pressure gauge. You want to refill it to the correct level, usually between 1 and 1.5 bar, as advised by the boiler manufacturer.
Here's a summary in a table:
| Step | Action |
|---|---|
| 1. Locate | Find the small, white key/knob. |
| 2. Prepare | Ensure the system is ready. |
| 3. Turn | Twist the key clockwise 2-3 times. |
| 4. Listen | Hear water flowing into the boiler. |
| 5. Monitor | Check the pressure gauge and ensure it is at the correct level. |
Important Notes:
- The specific appearance and location of the key or knob can vary slightly between different boiler models and brands.
- Do not overfill your boiler pressure; it should never go above the manufacturer's recommendation.
- If you do not feel confident in performing this task, consult a qualified heating engineer.
- Always follow the manufacturer's instructions for your specific boiler.
