How to do heating pressure test
As winter approaches, heating system preparation becomes a focus for many home and property management. Heating pressure testing is a critical step in ensuring the safe operation of your heating system. This article will introduce in detail the steps, precautions and common problems of the heating pressure test to help you successfully complete the test.
1. The purpose of heating pressure test
The heating pressure test is to inject high-pressure water or air into the heating system to check whether there are leaks or insufficient pressure-bearing capacity in the system. The purpose of the test is to ensure that the heating system is leak-free before official operation and to avoid malfunctions during winter heating.
2. Steps of heating pressure test
| steps | Operation content | Things to note |
|---|---|---|
| 1. Preparation | Close all radiator valves to ensure the system is closed. | Check the system for any obvious leaks or damage. |
| 2. Inject water and pressurize | Use a pressure pump to inject water into the system, and the pressure rises to 1.5 times the working pressure (usually 0.6-0.8MPa). | The pressurization process needs to be slow to avoid a sudden increase in pressure that may cause pipe rupture. |
| 3. Maintain pressure and observe | Maintain the pressure for 10-15 minutes and observe whether the pressure gauge drops. | If the pressure drops by more than 0.05MPa, the leakage point must be checked. |
| 4. Check for leaks | Check the pipes, valves, and radiator connections one by one for leaks. | Focus on checking the interfaces and welding parts. |
| 5. Pressure relief recovery | After the test is complete, slowly relieve pressure and drain the system of water. | Avoid rapid pressure relief causing pipeline vibration. |
3. Precautions for heating pressure test
1.Test time: It is recommended to conduct testing 1-2 months before the heating season to allow enough time to fix problems.
2.pressure control: The pressure must not exceed 1.5 times the system design pressure, otherwise the pipeline may be damaged.
3.ambient temperature: The ambient temperature should be higher than 5℃ during the test to avoid freezing and cracking of pipes caused by low temperature.
4.Professional tools: Use professional pressure pumps and pressure gauges to ensure accurate test results.
4. Common problems and solutions
| question | Possible reasons | Solution |
|---|---|---|
| Pressure drops too quickly | There is a leak in the system | Check pipe connections, valves and radiators and repair leaks. |
| The pressure cannot rise | The pressure pump fails or the system is not closed | Check the pump and system valves to ensure they are completely closed. |
| Local water seepage in pipes | Aged pipes or poor welding | Replace damaged pipes or re-weld. |
5. Tool preparation for heating pressure test
Here is a list of tools needed to conduct a heating pressure test:
| Tool name | Purpose |
|---|---|
| Pressure pump | Inject high-pressure water or air into the system |
| pressure gauge | Monitor system pressure changes |
| wrench | Tighten valve and pipe connections |
| Leak detector | Assist in detecting tiny leaks |
6. Summary
Heating pressure testing is an important step in ensuring the safe operation of the heating system. Through standardized testing procedures and tool preparation, system hazards can be discovered and repaired in a timely manner. If you are not familiar with the testing process, it is recommended to contact a professional to avoid unnecessary losses.
I hope this article can provide you with practical guidance and wish you a worry-free heating in winter!
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