Is the gas water heater afraid of freezing? Anti-freezing measures of water heater

1, the general instructions clearly remind consumers that when using the water heater in winter, it is necessary to drain water after use to prevent freezing.

Close the inlet valve and open the outlet and drain plug, so that the water in the water tank can be drained clean. In order to achieve better smoke exhaust effect, the smoke exhaust pipe of general gas water heater is only about 3 meters. If you only open the outlet and forget to open the drain plug, the water tank of the water heater may still freeze in cold and windy weather.

2. At present, some gas water heaters on the market have the function of automatic anti-freezing protection, and there is no need for manual drainage after use.

In addition to these models of water heaters, consumers must also follow the warning instructions in the instructions after using them in winter. Although the gas water heater is installed indoors, when the outdoor ambient temperature is too low, cold air will flow back from the flue, causing the water in the water tank to freeze. Once water freezes, it will expand and crack the water tank (that is, the coil of the heat exchanger), resulting in water leakage.

3. If the water pipe in the water heater freezes.

On the one hand, it may make the coil (the heat transfer is faster when the pipe wall is thin, and the copper pipe is faster than steel, but it is easy to crack), hose (rubber hose or metal bellows) or diaphragm burst; Secondly, low temperature may damage rubber parts (such as gaskets, gaskets or diaphragms); Third, if it is ignited after freezing, the water will not flow, and the heat will not be taken away with the water in time, and the coil will be extremely hot and may burn out.

Second, anti-freezing measures for energy gas water heaters

1. When the indoor temperature drops to freezing point (0℃), the water in the water heater must be drained. For specific drainage operation, please refer to the instruction manual of the water heater or consult a professional.

2. When the water heater stops, please disconnect the flue from the water heater and block the flue hole to prevent cold air from flowing backwards, but remember to ensure that the flue is connected in place when using it;

3. The anti-freezing measures must be cut off after the water heater runs;

4. Install a cut-off valve at the hot water outlet to prevent water from flowing backwards after discharge.

Third, how to prevent the energy gas water heater from freezing

1. It is recommended to install the hood and windshield during installation.

Prevent cold air from flowing backwards or reduce the amount of cold air. Once the outdoor environment is below zero, consumers should drain the water in the water tank of the water heater, which is an insurance practice. It should be noted that emptying the water tank is not unusable, and it can only be reinstalled when it is used.

2, commonly used antifreeze

When the temperature is below 0℃, use as little water as possible in the water heater, many times a day. Especially before going to bed and after getting up, put a small amount of water to make the water in the pipeline move, and rely on the water temperature to raise the temperature of the pipeline. The lower the temperature, the more water will be drained to prevent the water pipes from freezing.

3. Drop antifreeze

Pay attention to the weather forecast. When the temperature drops below -7℃, fill the water tank with water after running out of hot water at night. Then connect a basin under the nozzle or faucet, loosen the hot water valve slightly and let it drip slowly, so as to keep the water flowing in the pipeline. Generally, the flow of a basin of water at night can avoid pipeline freezing.

4, emptying antifreeze

If there is no reverse slope when the pipeline is installed, the water heater can be emptied and the drain valve can be kept open normally, so that the pipeline will not be frozen. As a matter of fact, the manufacturer has explained the suggestions to prevent frost cracking in the express and instruction, and consumers should pay more attention to the correct use.