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The installation steps and classification of natural gas water heaters are introduced.
Classification of natural gas water heaters
The energy used by natural gas water heaters is combustible gas, which can be divided into direct discharge type, flue type, forced discharge type and balance type according to its forms.
1. Direct-discharge water heater: The oxygen required for combustion is taken indoors, and the flue gas generated after combustion is also discharged indoors. Because it is easy to cause personal injury accidents, production has been banned.
2. Flue water heater: An exhaust pipe is installed on a linear basis, the oxygen required for combustion is taken indoors, and the flue gas generated by combustion is discharged to the outside through the flue. This kind of water heater must be equipped with a flue when it is installed, and attention should be paid to the smooth exhaust of the flue when it is used to prevent backflow.
3. Forced exhaust water heater: On the basis of flue type, an exhaust motor is added, and the flue gas is discharged to the outside through the flue. During operation, the flue gas is forced out of the room through the flue, but the oxygen needed for combustion is still taken from the room.
4. Balanced water heater: Compared with the first three types, it has achieved a great leap. The shell is sealed, and the flue integrated with the shell is made into an inner layer and an outer layer. The flue leads from the wall to the outside, and the oxygen required for the operation of the water heater is supplied from the outside through the outer layer of the flue. The flue gas produced after combustion is discharged from the inner layer of the flue to the outside, so it neither consumes nor pollutes the indoor air. However, installing such a water heater needs to reserve a passage like installing an air conditioner.
Second, the natural gas water heater installation steps
1. After the gas valve is installed, the master must measure it first, and then drill holes in the wall according to the measured data. The storage water heater must be installed on the load-bearing wall, otherwise there will be potential safety hazards. If it must be installed on a light wall, a bracket or other treatment should be installed under it.
Let's get to work. Drilling holes in tiles is also very skillful. First, grind a small hole with a fine drill to fix the drilling position, then slowly grind the tile through with a coarse drill, and then drill a deep hole with an impact gear, so that the tile will not crack.
3. After drilling a dozen holes and fixing the screws, the next step is to hang the gas water heater. When hanging, please ensure that the water heater is firm and not loose. The installation height is generally 165 ~ 175 cm, which is subject to the parallel line of sight of the fire viewing window.
4. After fixing the water heater, fix its hot and cold triangle valve. It should be noted that the outlet pipe (hot water) should not be equipped with a valve, otherwise it will affect the water output and use function.
At the same time, don't ignore the small details of installation. The installation of exhaust pipe and threaded pipe is equally important. The vent hole of water heater should be opened separately, and public vent hole is not suitable.
6. Next, you need to choose a suitable water pipe to connect the reserved cold water pipe with the water heater. Generally, special metal hoses can be used, and it is best to choose water pipes that are not easy to age.
7. After the installation is completed, it is necessary to conduct an overall test, and start to turn on the gas, electricity and test to test the heating function of the water heater and whether the water pipe leaks.
8. The temperature of water heater is generally 40 degrees. Under normal circumstances, the gas water heater will heat up in a few seconds, so you can turn on the hot water yourself to try the water temperature.
9. Finally, pressure test and compactness test are needed to ensure the safety of use.
Natural gas water heaters in daily life can be divided into many kinds. According to the differences between the actual use scenarios of consumers and brand models, there are also great differences in quotation and sales positioning. In addition, in actual installation or disassembly, it is necessary for us to refer to the classification information of water heaters for better operation. The installation steps of natural gas water heater introduced above are based on the professional information presented under this premise for your reference.
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