Wall-hung boilers have become the equipment of choice for heating and hot water in many homes**. As an efficient and energy-saving heating method, the correct maintenance of the wall-hung boiler ensures its stable and efficient operation, and the monitoring of water pressure is an important part of the maintenance work. This article will elaborate on the normal range of water pressure in a wall-hung boiler, how to monitor and adjust the water pressure, and what to do if the water pressure is abnormal.
1. The importance of water pressure in wall-hung boilers
A wall-hung boiler heats circulating water by burning natural gas or other fuels, and then transports the hot water through heating pipes to a radiator or underfloor heating system in your home. Water pressure refers to the pressure of circulating water inside the wall-hung boiler, which directly affects the thermal efficiency and safety of the heating system. If the water pressure is too low, it may cause water in the heating system to not circulate, while if the water pressure is too high, it can cause damage to pipes and joints.
Second, the normal range of water pressure of the wall-hung boiler
Under normal circumstances, the normal working water pressure of the wall-hung boiler should be maintained at 10-1.5 bar. The water pressure gauge is usually installed on the front panel of the wall-hung boiler or on the pipe close to the wall-hung boiler, and the user can know if the current water pressure is in the normal range by looking at the readings of the water pressure gauge. If the water pressure is less than 10bar, the system may automatically stop working to protect the boiler;And if the water pressure exceeds 15 bar, the safety valve may open to relieve pressure and avoid damage to the system.
3. Monitor the water pressure of the wall-hung boiler
The user should check the water pressure of the wall-hung boiler regularly, at least before and during the start of each heating season. To check the water pressure, just look at the pressure gauge on the wall-hung stove. It is most accurate to check the gauge readings when the wall-hung boiler is not running and the temperature is low.
4. Adjust the water pressure of the wall-hung boiler
If the water pressure is too low, the user needs to manually replenish the system. Most wall-hung boilers are equipped with a make-up valve that the user can rotate to allow water into the system until the pointer of the water pressure gauge returns to its normal range. (This operation needs to be carried out after reading the instructions of the wall-hung boiler and understanding the relevant steps, or seeking professional help.) ）
Conversely, if the water pressure is too high, part of the water in the system needs to be drained, which can be achieved by opening the exhaust valve or drain valve on the system.
5. Causes and solutions of abnormal water pressure
1. The water pressure is too low
Failure of the water supply system: Check and repair the water supply system.
Leaks: Check the heating system for leaks** and fix them in time.
Radiator exhaust: Exhaust the air from the radiator and refill the water pressure.
2. The water pressure is too high
Excessive hydration: Reduce the amount of water in the system and adjust to the normal water pressure range.
Expansion tank failure: Check whether the expansion tank is working properly and replace it if necessary.
Faulty safety valve: The safety valve does not release pressure properly and needs to be inspected or replaced.
6. Common problems in the maintenance of water pressure of wall-hung boilers
1. How to judge whether the water pressure is normal?
Through the water pressure gauge of the wall-hung boiler, you can intuitively know whether the water pressure is within the normal range.
2. What should I do if the water pressure still does not rise after replenishment?
There may be a water leak or a faulty water replenishment system, which should be checked and repaired.
3. Is it normal to rehydrate frequently?
Frequent hydration can mean that there is a leak in the system that should be looked for and repaired.
Summary:
Proper maintenance of the water pressure of the wall-hung boiler is essential to ensure the efficient operation of the entire heating system and extend the life of the equipment. Users should be aware of the normal working water pressure range of their wall-hung boiler, and regularly monitor and adjust the water pressure to ensure that the wall-hung boiler can operate at its best. When encountering abnormal water pressure, you should solve the problem in time or seek professional help to avoid causing more damage.
Note: The guidance and recommendations provided in this article are based on general wall-hung boiler maintenance common sense, and for specific wall-hung boiler models and brands, users should always follow the instructions and recommendations provided by the manufacturer. Before performing any maintenance operations, make sure to read and understand the owner's manual of the wall-hung boiler, or consult a professional if necessary.