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How to add water to gas wall-hung boiler

2026-01-03 03:24:21 mechanical

How to add water to gas wall-hung boiler

Gas wall-mounted boilers are one of the common heating equipment in modern homes. Correctly adding water is an important step to ensure their normal operation. This article will introduce in detail the steps, precautions and FAQs for adding water to a gas wall-hung boiler to help users easily complete the operation.

1. Preparations before adding water to the gas wall-hung boiler

How to add water to gas wall-hung boiler

Before adding water, you need to make the following preparations:

stepsOperating Instructions
1. Check water pressureCheck the water pressure gauge of the wall-mounted boiler to ensure that the current water pressure is lower than 1.0 bar (usually the water filling range is 1.0-1.5 bar).
2. Turn off the powerTo avoid accidents during operation, it is recommended to turn off the power of the wall-hung boiler first.
3. Prepare toolsPrepare a hose and an appropriate amount of purified or demineralized water.

2. Specific steps for adding water to a gas wall-hung boiler

The following is the detailed process of adding water:

stepsOperating Instructions
1. Find the water replenishment valveThe fill valve is usually a black or blue knob located at the bottom of the boiler.
2. Connect the hoseConnect one end of the hose to the refill valve and the other end to the water source.
3. Open the water replenishment valveTurn the refill valve counterclockwise to start filling the system with water.
4. Observe the water pressure gaugeWhen the water pressure reaches 1.0-1.5 bar, immediately close the water replenishment valve.
5. Exhaust treatmentOpen the exhaust valve on your radiator or floor heating system and check the water pressure again after the air has been released.

3. Things to note when adding water

Pay attention to the following when adding water to avoid equipment damage or improper operation:

Things to noteDescription
1. Avoid overpressureWater pressure exceeding 2.0 bar may cause the safety valve to release pressure and damage the equipment.
2. Use a suitable water sourceIt is recommended to use demineralized water or purified water to reduce scale accumulation.
3. Regular inspectionCheck the water pressure once a month to ensure the system is functioning properly.

4. Frequently Asked Questions

The following are common questions and answers from users:

questionAnswer
1. The water pressure is still low after adding waterThere may be a water leak in the system. It is recommended to contact a professional to check.
2. The water replenishment valve cannot be openedCheck the valve for rust or sticking and replace if necessary.
3. Large fluctuations in water pressureThere may be air in the system and it needs to be vented again.

5. Summary

Adding water to a gas wall-hung boiler is a simple operation, but the steps must be strictly followed to avoid equipment failure due to improper operation. Regularly checking water pressure and system status can extend the life of your boiler. If you encounter a problem that cannot be solved, it is recommended to contact professional maintenance personnel in time.

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