What kind of gas water heater should be used in Northeast China?

1. Select the water heater according to the gas type.

Water heaters are divided into artificial gas, liquefied petroleum gas and natural gas according to the characteristics of gas, and each category has a detailed classification. Therefore, consumers should choose the same type of water heater as the actual gas when buying water heaters, otherwise it will cause abnormal combustion of water heaters, burn out water heaters and endanger life safety. Generally speaking, brand-name water heaters are marked with strict gas types (for example, artificial gas has 5R, 6R and 7R; Natural gas includes 10T, 12T, 13T, etc. ), and consumers can find gas category labels on the outer packaging and shell when purchasing.

For special areas, because the gas source is not common with other cities, please pay attention to the use of regional special water heaters produced by well-known brand manufacturers with gas mixing equipment when purchasing.

2. According to the housing conditions and surrounding environmental conditions, choose and buy.

(1) In-line water heater This kind of water heater takes combustion-supporting air from the room, and the flue gas is also discharged into the room. It is only suitable for occasions where the kitchen area is spacious and well ventilated. The disadvantage is that the amount of hot water is small, generally 5 liters/minute, which can only meet the washing needs of kitchen utensils. Combustion waste gas easily affects other indoor appliances.

(2) Flue water heater The combustion air of this water heater is taken indoors, and the flue gas is discharged to the outside through the exhaust pipe under the action of natural pumping force, which is suitable for occasions with spacious kitchen area and good ventilation.

(3) Forced exhaust water heater This kind of water heater takes combustion-supporting air from the room and exhausts the flue gas to the outside through the exhaust fan. It is suitable for occasions where the kitchen area is small and the ventilation conditions are acceptable, and where the smoke outlet is far from the installation position of the water heater.

(4) Natural air supply and exhaust type (balanced type) This water heater sucks in outdoor air for combustion under the action of natural pumping force, and discharges exhaust gas to the outside, which is suitable for occasions with small kitchen area and poor ventilation.

(5) Forced air supply and exhaust water heater This kind of water heater sucks in outdoor air for combustion under the pumping force of the fan, and the generated waste gas is forced out of the room, which is suitable for occasions with small kitchen area and poor ventilation conditions, as well as occasions where the smoke outlet is far away from the use position of the water heater.

3. Choose water heaters with different control modes according to the economic situation and installation location.

(1) The water heater has four ignition control modes: manual piezoelectric ceramic ignition, manual pulse ignition, water-controlled automatic pulse ignition and microcomputer automatic pulse ignition.

(2) The water heater temperature control method is as follows:

Mechanical control: when in use, the temperature stability of hot water is poor, which is greatly affected by the pressure fluctuation of air source and water source. Its characteristics are simple structure and function, and low manufacturing cost (generally lower selling price).

Mechanical proportional control: when in use, the temperature stability of hot water is good, and it is less affected by the pressure fluctuation of air source and water source. It is characterized by complex mechanical structure, high processing requirements and moderate cost (and price).

Microcomputer control: Because the water heater is equipped with temperature and water quantity sensors, it is automatically adjusted and controlled by the computer when used, so the temperature stability of hot water is good and the precision is high. In the normal working range of the water heater, it is not affected by the pressure fluctuation of air source and water source. Its manufacturing process is complex and its cost is high, so its price is relatively high.

4. Buy water heaters according to your own housing level and gas supply capacity.

Generally speaking, residents with more than five floors in multi-storey houses should choose water heaters with low water pressure starting function (minimum starting pressure ≤0.03Mpa), and the capacity of the water heaters is suitable for the maximum capacity of gas meters. Water heaters with the same capacity have different requirements for the maximum capacity of gas meters because of the different types of gas used. For example, a 9-liter artificial gas water heater should have a gas meter with a rated flow of 4m3/h; The 9-liter pipeline liquefied gas water heater only needs a gas meter larger than 0.6 m3/h..

5. Choose the water heater according to its performance index, brand and price.

Generally speaking, the larger the water heater capacity, the more functions, the more advanced the control mode, the higher the manufacturing cost and the more expensive the price; At the same time, brand-name products may be a little more expensive than non-brand products, but they have good reputation, stable quality and good service. Therefore, it is recommended that qualified users choose water heaters with better brands.

6. Select the water heater according to the configuration of the safety device.

Generally speaking, famous brand water heaters include: anti-burning safety device, anti-overheating safety device, anti-overpressure safety device, flameout protection device, anti-freezing safety device and water cut-off protection device. Microcomputer-controlled water heaters also have overload protection, smoke pipe blockage protection and excessive air flow protection devices. At the same time, when a fault occurs, there is an obvious fault display or alarm.

7. Choose water heaters according to different climatic conditions.

Because of the different climate and distribution of water pipes in different areas, the indoor temperature and cold water temperature are also different. Generally speaking, when the cold water temperature is low or the indoor temperature is low, please choose a water heater with a capacity of more than 8 liters.

8. Select the water heater according to the installation location conditions.

According to different installation positions, water heaters can be divided into indoor type and indoor type. When there is no condition to install a water heater indoors or in the kitchen, you can choose an outdoor water heater. Although the work of the main body of the water heater has no influence on the indoor environment, the main body of the water heater has high processing requirements and high control requirements, and generally adopts microcomputer remote control, so the price of the water heater is high, the installation materials and labor costs are high, and the maintenance is inconvenient.