Common problems with wall-hung boilers
1. The heating water pressure increases.
This is a normal phenomenon. Water expands when heated in a closed pipeline, and the pressure will naturally rise. The higher the temperature, the greater the expansion pressure, but when cooled to room temperature, the pressure should return to 1.2-1.5bar.
2. The pressure after cooling is lower than the original pressure of filling water.
This is a normal phenomenon. The wall-hung boiler has an automatic exhaust valve (exhaust valve). When the heating is running, the air in the pipeline and the radiator will be brought to the furnace by water. At the exhaust valve inside, the air is automatically discharged, so the pressure after cooling is lower than the pressure of the original water filling. The air in the pipeline can be exhausted only after several times of discharge and replenishment of water. Note that if the pressure is still decreasing when it is not running, there may be a phenomenon of dripping, which needs to be checked carefully.
3. Worry about the frequent startup of the wall-hung boiler, which will affect its life.
Don’t worry, both imported and domestic products have a 3-minute delay and a cooling delay function in the program, that is to say, after reaching the set temperature, you must meet the two Conditions, the wall-hung boiler can be restarted:
①The time must be stopped for more than 3 minutes;
4. After installing the thermostat, what is the function of the buttons or buttons on the fireplace?
The thermostat controls the room temperature, and how much water is used to heat the room still needs to be controlled by the button on the wall-hung stove. For example: the temperature button on the wall-hung boiler is placed at 9, and the button of the thermostat is adjusted to 20°C. At this time, the wall-hung boiler will be heated with hot water of 85°C, so that the room temperature reaches 20°C as soon as possible. If the temperature button on the wall-hung boiler is set to 0 and the room temperature is set to 20°C, the wall-hung boiler will be heated with water at 30°C. Obviously, the former indoor heating rate is fast, and the latter indoor heating rate is slow. Therefore, it can be said that the thermostat is installed, and the button on the stove becomes the adjustment button of the heating rate.
5. About antifreeze.
The original stove displays a small umbrella (note: the stoves of various brands may have different graphics), which is the summer mode, that is, only for sanitary hot water.
Showing snowman (note: same as above) means winter mode, both functions of heating and sanitary hot water are available.
Anti-freeze is set to display a small umbrella, that is, the mode of only supplying hot water. At this time, the wall-hung boiler does not run. When the water temperature is lower than 4°C, the wall-hung boiler automatically starts to burn the water to 42°C and so on ( Be sure to connect gas and electricity). If you set the mode to “Snowman”, it is low temperature operation, not frost protection. The domestic antifreeze is more detailed: the function button is set to the hot water gear, as long as the power is turned on and ventilated, when the water temperature is below 9 ℃, the water pump will start to strengthen the water circulation, and if the water temperature continues to drop to 5 ℃, the automatic ignition will stop when the temperature rises to 30 ℃ , and the other two buttons are placed freely.
You might as well try opening the balcony windows. And in the shutdown state, as long as it is powered on and ventilated, at 5 °C, it will also be forced to start to protect the wall-hung boiler.
6. About the heating cost of the wall-hung boiler.
A short run doesn’t tell you whether it’s free or not. Only the average over the entire heating season is meaningful. The heating of the gas wall-hung boiler must go through the following procedures:
①barn; The heat is equal to the heat supplied by the wall-hung boiler.
①, ② procedure is the most labor-intensive process. ③ is the most economical process. After entering the normal heating process, it is in the state of ③. Therefore, the most economical method is not to turn off the furnace, but to adjust the temperature to the lowest level when heating is not needed, and then increase the temperature when heating is needed, reducing the repetition of procedures ① and ②. Taking 100 square meters as an example, the average daily gas consumption in a heating season (including bathing and cooking) is 6-8 cubic meters.
7. How to know the thermal insulation status of the room.
For example, the room temperature is 18℃, and a thermometer is fixed in the room. After the furnace is turned off for 12 hours (daytime), the thermometer will decrease by 1-2℃, and the temperature will decrease by 4-5℃ at night, indicating that the heat preservation is good, otherwise it is a place with air leakage, which needs to be checked carefully.
8, how to solve the cold water before bathing.
First calculate the amount of wasted water, there is unheated cold water flowing out 8-15 seconds before bathing, that is 0.16 liters/second × 15 = 2.4 liters, 10 times a day is 24 liters, The wasted water in one year is 8760 liters or 9 cubic meters, which is more than 30 yuan.
Saving method:
①Use a pot to connect another for other purposes.
②Minimum start-up flow of sanitary hot water for wall-hung boilers is 2.5 liters/min. When using sanitary hot water, turn on a small flow first, and turn it on immediately after the water is hot. The simple judgment of the flow rate of 2.5 liters/min is to open the faucet to form a water column with the thickness of the brush rod.
③The most advanced method: use the old electric water heater to cooperate with the wall-hung boiler to form a hot water center with a water tank. This method is most suitable for the apartment with a farther bathroom. Use the wall-hung boiler to heat the sanitary water and pass it into the water inlet of the electric water heater. Electric water heaters only assume the role of thermal insulation.
For example, burning 80 liters of hot water in a wall-hung boiler consumes 0.36 cubic meters of gas and costs 0.68 yuan. The electric water heater is 80 liters, and the heat preservation is 24 hours, and the power consumption is 1.5 degrees, which is the same as the gas cost. Continuous use, less waste, and more comfortable.
9. The safety of smoke exhaust of wall-hung boilers.
The smoke pipe of the wall-hung boiler is a concentric double pipe, the inner pipe is for exhaust smoke, and the outer pipe is for air intake, and it communicates with the sealed chamber and is completely isolated from the interior. All brands of wall-hung boilers are forced smoke exhaust (with fan) balanced (with air pressure switch), so smoke exhaust and air intake are carried out outdoors, no indoor air is consumed, and safety is guaranteed. The explosions that have occurred in recent years are all caused by the leakage of natural gas hoses, and there is no report of the furnace blowing up.
10. The reason why the sanitary hot water volume of the wall-hung boiler becomes smaller
The filter of the faucet is blocked or the filter of the cold water inlet is blocked. It can be seen by removing the bellows of the cold water inlet. It can be restored after cleaning.
11. There is noise in the heating of the wall-hung boiler and the heat is slow
It may be that the filter screen of the heating inlet and return of the wall-hung boiler is blocked, and the corrugations are disassembled. The pipe can be cleaned after cleaning, or the heating pipe is blocked.
12. How to drain water when cleaning the filter.
The arrangement of heating water in the furnace. Close the cold water inlet valve, open the filling valve, open the tap of the sanitary hot water, and the heating water in the furnace can be discharged. Reverse operation enables refill operation.
Unscrew it. The drainage of the heating can only use the running air of the radiator.
13. The radiator with a height higher than that of the wall-hung furnace often has the sound of water flowing during operation.
As long as the air is released from the running air of the radiator several times, then the wall-hung boiler is filled with water and repeated several times.
14. The reasons why the room temperature does not go up are as follows:
A. The heat dissipation of the radiator is not enough. The user’s home of the radiator. Change the size of the radiator so that the heat emitted by the radiator is not enough to compensate for the heat loss in the room.
B. The wet room is not yet dry. Because the wall is wet, the water contained in it needs to be vaporized and absorb a lot of heat, so the room temperature cannot go up, and the baking room will take about a week.
C. On and off, the room temperature does not reach equilibrium, that is, shut down, and the heat emitted in the early stage is also absorbed by the outside world due to the heat transfer between the houses, so the required temperature is not always reached.
D. There is no heating up and down, left and right, and heat is lost.
15. When using a wall-hung boiler for the first time in a new home, a more appropriate method is:
a. The water temperature is heated, and the machine is not turned off, so that the slow baking room will prevent the walls and furniture from drying out.
b. Do not drive to a higher temperature. First, it is not conducive to the evaporation of water vapor in the wall. Second, the heat will help the neighbors to drive away the cold due to the heat transfer between the houses. No matter how high the water temperature is, it doesn’t help, it just shortens the time of the roasting room, and the room temperature still can’t go up temporarily. Use the lowest temperature, and after about a week of use, you can heat up at will. The low temperature is about 3-4M3 gas per day plus bathing and cooking 5M3 is enough. (Because more heat is required for water vaporization, the oven is more labor-intensive).
c. The above four reasons are the problems that every community has to face when they move into a new residence. First, there is no need to worry, and second, there is no need to be impatient. The situation will improve day by day, and the temperature will continue to rise.
16: Is heating with a gas wall-hung boiler safe?
Answer: The gas wall-mounted heating furnace is equipped with many protection functions on the safety device, such as automatic flameout protection, overvoltage protection, overheating protection, antifreeze protection, etc. If there is any abnormality in the water, electricity and natural gas systems, it will automatically stop running until the fault is removed. For example, when there is a sudden power failure, the machine will stop working. After the power is turned on, the host will automatically conduct a comprehensive inspection. After confirming that it is completely fault-free, it will start to operate as usual, and it is absolutely safe and reliable to use.
17: What factors are related to the gas consumption of the wall-hung boiler?
Answer: The gas consumption of the gas wall-hung boiler is related to the following factors:
1. The first heating period and the subsequent heating period. The gas consumption in the first heating period is the highest, and then decreases year by year. Usually, the gas consumption in the second heating period is about 30% lower than that in the first heating period.
2. The indoor setting temperature.
3. The orientation of the room and the number of floors. The air consumption of the top layer and the first layer is about 15% higher than that of the middle layer, and the air consumption of the rooms on the shady side and the yang side of the same layer differs by about 10%.
4. Outdoor temperature.
5. Whether the surrounding is heated. When the surrounding area is not heated, the gas consumption will increase by about 20%.
6. The temperature preservation effect of the room.
7. User usage, etc.
18: In the same community, some people’s new houses are relatively hot while their own is relatively cold. I don’t know why?
A: There are 5 reasons and countermeasures. First of all, it is the indoor temperature drop caused by improper replacement of the heating radiator. The solution is to replace the radiator with products from regular manufacturers, and design the location and quantity of the radiator reasonably. The second is the indoor temperature drop caused by the installation of the heating cover. The solution is to try not to worry about the radiator, and it must be installed with vent holes; if the radiator has been installed and the heat dissipation is not good, you can remove the front heat dissipation baffle; do not add anything on the radiator, such as installation. Install removable; pay attention to the placement of the sofa, do not block the radiator. The third is the decrease in indoor temperature caused by the renovation of the balcony. The solution is that the renovation and renovation of the balcony must be carried out with the consent of the housing management department or under the guidance of professionals, so as to avoid hidden safety hazards, and the original balcony floor and wall must be well insulated when renovating the balcony. Fourth, the decoration destroys the insulation layer of the room and causes the indoor temperature to drop. The solution is that the interior decoration and renovation can not damage the insulation layer of the house. If it is damaged, it should be re-installed. The top and bottom residents can install the insulation layer in the house. The north outer wall of the room should be insulated. north wall. Fifth, the replacement of doors and windows caused the indoor temperature to drop. The solution is to use well-insulated door and window materials during decoration, and pay attention to sealing.
19. About the pollution of gas-fired wall-hung boilers
1. When the large boiler room is decomposed into hundreds of wall-hung boilers, it is very harmful to the atmosphere. In terms of pollution, the pollution is roughly the same, except that the exhaust gas from one chimney is turned into the exhaust gas from hundreds of small smoke pipes.
2. For the community environment, it does not constitute environmental pollution, because:
①When the exhaust gas is discharged, a hot gas column with a diameter of 80cm is formed in front of the smoke pipe (the smoke temperature About 100°C), due to the large temperature difference with the environment, the hot air column floats straight up, rather than drifting around.
②The exit of the exhaust gas is generally a place that is difficult for normal people to reach, such as the outside of the balcony and the outside of the kitchen wall. The personnel of the Beijing Environmental Protection Monitoring Center carried out the test by sticking the safety belt and sticking out the window. Therefore, it is not easy to feel the pollution.
