What should I do if the pressure of the wall-hung boiler is too high? ——Cause analysis and solutions
Recently, with the increase in heating demand in winter, the use of wall-hung boilers has become one of the hot topics. Many users have reported that the wall-mounted boiler has excessive pressure, which not only affects the heating effect, but may also pose safety hazards. This article will combine the hot discussions on the Internet in the past 10 days to provide you with a detailed analysis of the causes and countermeasures of excessive pressure in wall-hung boilers.
1. Common causes of excessive pressure in wall-hung boilers
According to network-wide maintenance forums and user feedback data, excessive pressure in wall-hung boilers is usually caused by the following reasons:
| Reason type | Proportion | Specific performance |
|---|---|---|
| The water replenishment valve is not closed | 45% | User forgets to close the valve after refilling water |
| Expansion tank failure | 30% | The air bag is damaged or the pre-charge pressure is insufficient |
| Temperature too high | 15% | Water temperature set too high causes thermal expansion |
| other reasons | 10% | Including pipeline blockage, pressure gauge failure, etc. |
2. Analysis of the dangers of excessive pressure
Wall-hung boiler pressure exceeding the normal operating range (usually 1-2bar) will bring the following risks:
1. Frequent pressure relief of the safety valve accelerates the aging of components
2. May cause leakage at pipeline interfaces
3. In extreme cases, the seal may be damaged.
4. Increase the load of the water pump and affect the service life
3. Emergency handling steps
| Operation steps | How to operate | Things to note |
|---|---|---|
| 1. Check the pressure gauge | Confirm current pressure value | Record the pressure value |
| 2. Close the water replenishment valve | Turn clockwise to fully close | Check valve status |
| 3. Pressure relief treatment | Discharge water through the radiator exhaust valve | Prepare water container |
| 4. Observe pressure changes | Stop when it drops to about 1.5bar | Avoid excessive pressure relief |
4. Long-term solutions
1.Check the expansion tank regularly: It is recommended to check the airbag pressure every year before the heating season. The normal value should be 0.8-1bar.
2.Standardize hydration operations: When the water is replenished, the pressure will stop when it reaches 1.5bar and the valve will be closed immediately.
3.Install pressure monitoring device: Intelligent pressure sensor can be installed for real-time monitoring
4.Professional maintenance: Ask professionals for comprehensive overhaul every 2-3 years
5. User Frequently Asked Questions (Q&A)
Q: Will it stop automatically when the pressure reaches 3bar?
A: Most brands of wall-mounted boilers are equipped with a 3bar automatic protection function, but continued high pressure will still damage components.
Q: Can I adjust the safety valve myself?
A: Users are strictly prohibited from adjusting the setting value of the safety valve by themselves, and must be operated by professionals.
Q: What should I do if the water discharged during pressure relief is dirty?
A: It means that the system needs to be cleaned. It is recommended to contact after-sales service for professional pipeline flushing.
6. Maintenance service data reference
| Service type | average processing time | Reference fee |
|---|---|---|
| Expansion tank replacement | 1-2 hours | 300-600 yuan |
| System pressure relief treatment | 30 minutes | 100-200 yuan |
| Comprehensive testing | 2-3 hours | 200-400 yuan |
Warm reminder:There may be differences between wall-mounted boilers of different brands and models. It is recommended to check the product manual or consult the manufacturer's customer service before handling. If pressure problems recur, be sure to contact professional maintenance personnel to investigate the root cause.
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