How to test the heating pressure
As winter approaches, heating pressure testing has become a hot topic of concern for many families and properties. Heating pressure test is an important step to ensure the normal operation of the heating system. This article will introduce the heating pressure test method, precautions and common problems in detail to help you successfully complete the pressure test.
1. Basic steps for heating pressure test
Heating pressure test is to inject water or air at a certain pressure into the heating system to check whether there are leaks or insufficient pressure-bearing capacity in the system. The following are the basic steps for pressure testing:
| steps | Operation content |
|---|---|
| 1 | Close all radiator valves to ensure the system is closed. |
| 2 | Connect the pressure test pump and slowly inject water or air into the system until the pressure rises to 1.5 times the working pressure. |
| 3 | Maintain the pressure for 30 minutes and observe whether the pressure gauge drops. If the pressure drops significantly, it means there is a leak in the system. |
| 4 | Check pipes, valves and radiator connections for leaks and repair them promptly. |
| 5 | After the pressure test is completed, slowly release the pressure, open the valve, and return to normal status. |
2. Precautions for heating pressure test
The following matters need to be paid attention to during the pressure test process to ensure safety and effectiveness:
| Things to note | Description |
|---|---|
| 1 | Before pressure testing, make sure there is no residual air in the system to avoid pressure instability. |
| 2 | The pressure test pressure shall not exceed 1.5 times the system design pressure to avoid damage to the pipeline. |
| 3 | It is prohibited to knock or vibrate the pipeline during the pressure test to prevent accidental leakage. |
| 4 | If leakage is found, the pressure test should be stopped immediately, repaired, and then tested again. |
| 5 | After the pressure test is completed, be sure to drain the water in the system to prevent freezing in winter. |
3. Common problems and solutions in heating pressure test
During the pressure test process, you may encounter the following problems. Here are the solutions:
| question | Solution |
|---|---|
| Pressure drops too quickly | Check whether the pipe connections are loose and whether the valves are tightly closed. |
| The radiator is not hot locally | It may be that the air is blocked and needs to be exhausted; or the pipe is blocked and needs to be cleaned. |
| The pressure test pump cannot pressurize | Check whether the pump is working properly and whether the pipeline is leaking air or water. |
| Pipe leaks | Replace damaged pipes or seals and retest pressure. |
4. The best time to test the heating pressure
Heating pressure tests are usually carried out before the start of the heating season, and the specific time varies by region. The following is a reference for pressure test times in some areas:
| area | Pressure test time |
|---|---|
| northern region | Mid-October to early November |
| southern region | Mid-November to early December |
| Central heating community | Uniform notice from the property, usually 1-2 weeks before heating |
5. Summary
Heating pressure test is a key step to ensure the normal operation of the heating system in winter. Through standardized pressure test operations, potential problems can be discovered and solved in time. Pay attention to safety during the pressure test, follow the operating procedures, and deal with problems in a timely manner. If you are not familiar with pressure testing operations, it is recommended to contact a professional.
I hope this article can help you successfully complete the heating pressure test and welcome a warm winter!
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