Although the wall-hung boiler is a kind of heating equipment with few problems, it does not mean that there will be no problems, but its manufacturing process is more complicated, and sometimes some faults occur, which makes many consumers very headache.
What are the common problems and how to solve them?
1, heating water pressure rises.
This is a normal phenomenon. When water is heated and expanded in a closed pipeline, the pressure will naturally increase. The greater the water capacity of the pipeline (the larger the room), the greater the expansion pressure, and the higher the set temperature, the greater the expansion pressure. However, when it is cooled to room temperature, the pressure should be restored to 1.2- 1.5 bar.
2. The pressure after cooling is lower than that at the time of initial water filling.
The wall-hung boiler has an automatic ventilation device (exhaust valve). During heating operation, the air in the pipes and radiators will be taken to the exhaust valve in the boiler by water, and the air will be discharged automatically, so the pressure after cooling is lower than the original water filling pressure. The air in the pipeline can only be exhausted after repeated discharge and replenishment. Note that if the pressure is still decreasing when it is not running, there may be dripping phenomenon, which needs careful investigation.
3. I am worried that frequent startup of wall-hung boilers will affect my life.
Don't worry, both imported products and domestic products have three-minute delay and cooling delay functions, that is to say, after reaching the set temperature, the restart of the wall-hung boiler must meet two conditions: ① the stop time exceeds three minutes; (2) When the water temperature drops above 5℃, the two conditions must be met at the same time before restarting.
4. What are the buttons or keys on the wall-hung boiler for after installing the thermostat?
The thermostat is used to control the room temperature, but how much water is used to heat the room temperature still needs the button on the wall-hung boiler to control it.
5. About anti-freezing.
The display of snowman indicates winter mode, with heating and sanitary hot water functions. Anti-freezing is set to display umbrella, that is, only hot water is supplied. At this time, the wall-hung boiler does not run. When the water temperature is lower than 4℃, the wall-hung boiler will automatically start to burn the water to 42℃ and so on (be sure to turn on the gas and electricity). If the setting mode is "snowman", it is operated at low temperature, not antifreeze.
Domestic antifreeze is more detailed: the function button is set with hot water. As long as the water is electrified and ventilated, when the water temperature is lower than 9℃, start the water pump to strengthen the waterway circulation. If the water temperature continues to drop to 5℃, the automatic ignition will stop when the temperature rises to 30℃.
The other two buttons are randomly placed, so try opening the balcony window. And when it is turned off, as long as it is electrified and ventilated, it is forced to start at 5℃ to protect the wall-hung boiler.
6. About the heating cost of the wall-hung boiler.
Short-term operation does not mean that it is expensive. Only the average value of the whole heating season makes sense. Taking 100 square meter as an example, the average daily gas consumption (including bathing and cooking) in a heating season is 6-8 cubic meters.
7. How do I know the insulation of the room?
For example, indoor constant temperature 18℃, indoor fixed a thermometer. After shutdown 12 hours (during the day), the thermometer drops 1-2℃ and drops 4-5℃ at night, indicating that the heat preservation is good.
8. How to solve the cold water before bathing?
First, calculate the wasted water. Unheated cold water flows out 8- 15 seconds before bathing, that is, 0. 16 liters/second × 15=2.4 liters, which is 24 liters every day 10 times, and the wasted water is 8760 liters, that is, 9 cubic meters, which is more than 30 yuan a year.
9. Smoke exhaust safety of wall-hung boiler.
The smoke pipe of the wall-hung boiler is concentric double pipes, the inner pipe is used for smoke exhaust, and the outer pipe is used for air intake, which communicates with the closed room and is completely isolated from the room. Therefore, smoke exhaust and air intake are all carried out outdoors, which will not consume indoor air and ensure safety. The explosion accidents in recent years are all caused by the leakage of natural gas hoses, and there is no report of furnace explosion.
10, the reason why the amount of sanitary hot water in wall-hung boiler becomes smaller.
The faucet filter screen is blocked or the cold water inlet filter screen is blocked. Remove the bellows of the cold water inlet for inspection. It can be recovered after cleaning.
1 1. The wall-hung boiler is noisy and slow to heat.
It may be that the filter screen at the heating inlet and outlet of the wall-hung boiler is blocked, and the corrugated pipe can be removed and cleaned, or the heating pipe is blocked.
12. How to drain water when cleaning the filter screen?
Discharge method of hot water in furnace. Close the cold water inlet valve, open the inlet valve and open the sanitary hot water faucet, and the heating water in the furnace can be discharged. Reverse operation can add water again. As long as it is unscrewed, the radiator can only drain water through the exhaust port of the radiator.
13, the radiator which is higher than the wall-hung boiler often has the sound of water running during operation.
As long as the radiator is deflated many times in the windward, and then the wall-hung boiler is filled with water, it can be repeated several times.
14, the reasons for not rising at room temperature are as follows:
1) The radiator has insufficient heat dissipation, which is easy to happen in the user's home where the radiator is replaced. Change the radiator from large to small, so that the heat emitted by the radiator is not enough to make up for the indoor heat loss.
2) A damp room is not dry. Because the wall is wet, the water contained in it needs to be gasified to absorb a lot of heat, so it takes about a week to bake at room temperature.
3) Start and stop, the room temperature is unbalanced, that is, shut down, and the heat emitted in the early stage is also absorbed by the outside world due to heat transfer between households, which will never reach the required temperature.
4) The neighbors don't provide heating, so the heat loss is great.