How to add purified water to wall-mounted boiler
Wall-hung boilers are commonly used heating equipment in modern households, and their normal operation is inseparable from the management of water quality. Adding purified water is one of the important steps in maintaining the performance of your wall-hung boiler. This article will introduce in detail the method, precautions and related data of adding purified water to the wall-mounted boiler to help users operate it correctly.
1. Why add purified water?

The use of pure water in wall-mounted boilers can effectively prevent scale and corrosion and extend the life of the equipment. Ordinary tap water contains minerals and impurities, and long-term use can cause pipe blockage and reduced thermal efficiency.
| Water quality type | Impact on wall-hung boilers |
|---|---|
| purified water | Reduce scale and extend service life |
| tap water | Easy to produce scale and reduce thermal efficiency |
2. Steps to add purified water
1.Turn off the power to the wall-hung boiler: Ensure safe operation and avoid the risk of electric shock.
2.Find the water injection port: Usually located at the bottom or side of the wall-mounted boiler, marked with a "water filling" mark.
3.Connect water injection tool: Use a special water injection funnel or hose to connect the pure water bucket.
4.Slowly pour purified water: Avoid water flowing too fast causing bubbles to form.
5.Check pressure gauge: After water injection, the pressure should be maintained between 1-1.5 bar.
| steps | Operational points |
|---|---|
| power off | ensure safety |
| Find the water injection port | Clearly marked |
| Connection tool | Use special equipment |
| Fill water slowly | avoid air bubbles |
| Check pressure | 1-1.5 bar |
3. Precautions
1.Check water quality regularly: It is recommended to test water quality every six months to ensure purity.
2.Avoid using impure water: Such as mineral water or filtered water, which may still contain trace minerals.
3.Antifreeze in winter: If the wall-hung boiler is not used for a long time, the water tank needs to be drained to prevent it from freezing.
| Things to note | Specific instructions |
|---|---|
| Water quality testing | Once every six months |
| Water source selection | Purified water only |
| winter maintenance | Empty antifreeze |
4. Frequently Asked Questions
1.Q: Can I add distilled water?
A: Yes, distilled water has similar properties to purified water, but the cost is higher.
2.Q: What should I do if the pressure is too low after water injection?
A: Check whether there is any water leakage, or contact a professional for repair.
| question | answer |
|---|---|
| Is distilled water available? | Yes, but the cost is high |
| pressure too low | Check for leaks or report for repair |
5. Summary
Correctly adding pure water is a key step in daily maintenance of wall-hung boilers. By following the above steps and precautions, users can effectively avoid equipment failure and extend the service life of the wall-mounted boiler. If you have any questions, it is recommended to consult professional technicians.
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