How to adjust the water pressure of wall-mounted boiler
With the arrival of winter, the frequency of use of wall-mounted boilers gradually increases, and water pressure adjustment has become the focus of many users. Among the hotly discussed topics on the Internet recently, the water pressure problem of wall-mounted boilers occupies an important position. This article will give you a detailed explanation on how to adjust the water pressure of a wall-mounted boiler, and provide structured data to help you quickly grasp the key points of the operation.
1. Standard range of water pressure for wall-hung boilers

Boiler water pressure often needs to be maintained within a specific range to ensure proper operation. The following are the water pressure standards for common wall-hung boilers:
| Wall mounted boiler type | Normal water pressure range (Bar) |
|---|---|
| Conventional wall-hung boiler | 1.0-2.0 |
| Condensing wall-hung boiler | 1.2-1.5 |
| Special wall-mounted boiler for floor heating | 1.5-2.0 |
2. The hazards of too high or too low water pressure
Abnormal water pressure may have the following effects on wall-mounted boilers:
| Question type | possible consequences |
|---|---|
| Water pressure is too high | Safety valve leaks water, pipeline pressure is too high, and equipment life is shortened |
| Water pressure is too low | Poor heating effect, frequent shutdowns, idling damage to the water pump |
3. How to adjust the water pressure of the wall-mounted boiler
The steps to adjust water pressure are as follows:
1.Check current water pressure: Check the wall-mounted boiler pressure gauge to confirm whether the current water pressure is within the normal range.
2.Hydration operation(When the water pressure is too low): - Turn off the power supply to the wall-hung boiler. - Locate the refill valve (usually located at the bottom) and turn it slowly counterclockwise. - Observe the pressure gauge and close the water replenishing valve immediately when it reaches 1.5Bar.
3.Pressure relief operation(When the water pressure is too high): - Turn off the power supply to the wall-hung boiler. - Release some of the water through the radiator vent valve or system drain. - Observe the pressure gauge and stop releasing the pressure when it drops to 1.5Bar.
4. Frequently Asked Questions
| question | Solution |
|---|---|
| Water replenishment valve cannot be closed | Check the valve for damage and replace if necessary |
| No change in pressure gauge | Check whether the pipeline is blocked or the pressure gauge is faulty |
| Frequent pressure relief | Troubleshoot system leaks or safety valve failures |
5. Maintenance suggestions
1. Check the water pressure regularly, once a week is recommended. 2. When not in use for a long time, reduce the water pressure to below 1.0Bar. 3. Ask professionals to conduct a comprehensive overhaul every 2-3 years.
Through the above steps and data analysis, you can easily master the method of adjusting the water pressure of the wall-mounted boiler. If the problem is still not resolved, it is recommended to contact professional after-sales personnel to ensure safety and equipment life.
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