An electric instantaneous water heater for a tap is a special type of water heating devices, which is the smallest and most convenient to install. For some time now, it is he who has been popular in kitchens. Why it happened so - let's try to figure it out.
Tap water heater - compact and easy-to-use device
Content
Instantaneous electric water heater on the tap: device and installation procedure
When there is no hot water supply at all in the apartment, powerful boilers, capable of providing hot water to all taps. In conditions of periodic interruptions with hot central water supply, it is much more profitable to install a flow-through electric water heater on a tap. It is a small device that looks like a thickened one in the middle of the tap. This thickening houses a powerful electric heating element and a water flow sensor.
Related article:
How to choose an electric instantaneous water heater. Using a heating device in the apartment. Domestic hot water source. Features of electric flow-through boilers.
The device heats water in a flowing manner. That is, the water, flowing through the device, contacts the heating element and heats up. The power is regulated by a rheostat, the handle of which is located on the product body. Most often, the adjustment range is defined in the range from 40 to 70 degrees. Since the water heater is flow-through, the heating level can also strongly depend on the water pressure in the system.
The structure of an instantaneous electric water heater on a tap
These devices are always and always equipped with a protective electronic device RCD... It is designed to instantly disconnect the device from the power supply in the event of a breakdown of electricity. This avoids electric shock. The RCD is installed directly on the mains cable of the water heater. Among other things, there is overheating protection inside the device housing. It turns on when the water flow in the system decreases.
Helpful advice! To avoid instantaneous water heater the protection did not work, it is necessary to monitor the water pressure in the system, and also not to put the rheostat in the maximum position for a long time.
Common sizes of compact tap-mounted water heaters
Installation of an instantaneous electric water heater on a tap is easier than all other hot water appliances. No additional components are needed here. First of all, we remove the usual mixer from the sink, for which we shut off the water with a common valve at the entrance to the apartment and unscrew the flexible eyeliner. In place of the tap, we install the device and connect a flexible supply hose to it through a 1/2 threaded connection.We connect the cord equipped with an RCD to a household network of 220 V. After that, the RCD is tested, for which the "test" button on its body is pressed. The device should turn off.
If everything is fine, then click on the big button. In all instantaneous water heaters, a water flow sensor is installed, which signals the automation to turn on the tap. Therefore, to start the device, you just need to open the tap. A few seconds after this, the water will heat up, and it will become the required temperature.
Instantaneous electric water heater on the tap is very easy to install
Helpful advice! So that when the centralized hot water supply is resumed, the device can simply not be plugged into the network, you need to install it independently of the main tap. To do this, a hole is drilled in the sink with the same diameter as that of the tap. They screw it to it water heater and connected with a flexible hose through a splitter to a cold water pipe. In this case, dismantling of the main crane is not required.
Since the power of instantaneous electric water heaters per tap is small and lies in the range from 3 to 5 kW, a separate wiring is not required. However, when using more powerful devices, it is necessary, in agreement with the management company, to lead a separate cable from the meter of the required section.
External structure of instantaneous water heater for a tap
Overview of various models of instantaneous gravity water heaters
Many well-known companies produce instantaneous non-pressure water heaters that are installed directly on the tap. All of them are needed to supply hot water to only one taps and have a small power consumption. Let's consider some popular models:
- such a brand as "Aquatherm" is well known to the consumer. Its instantaneous water heaters have a beautiful appearance, are quickly installed, and are also equipped with filters that purify water. The heating element in these devices has a very high reliability class. The device has overheating protection and RCD. Water heats up very quickly up to 60 degrees using a heating element with a power of 3 kW. The cost of models of this brand starts from 60 USD;
Instantaneous electric water heater for installation in the bathroom
- "Delimano" is an electric flowing water heater for a tap, equipped with a rheostat that allows you to regulate the temperature of the water flowing through it. It has very fast heating up and an attractive case design. The device is made of plastic and can withstand pressures up to 0.8 MPa. Water temperature - 60 degrees with a power of 3 kW. Its minimum cost is 40 USD;
- Aquastream has a very small size and good energy savings. With a power consumption of 2.5 kW, it is capable of heating water to the same 60 degrees, and all this at a cost of 40 USD;
Electronic circuit inside the instantaneous water heater on the tap
- Instantaneous water heater "Electrolux" has several modifications of various power, which varies from 3.5 to 6.5 kW. Devices of this brand have all degrees of protection, both against electric shock and overheating. Their design will suit any kitchen or bathroom interior. Instantaneous water heater electrolux is one of the most famous brands on the market. At the same time, the prices of a water heater-faucet manufactured by this company start at only $ 30.
When choosing a water heater, you must definitely pay attention to the brand and technical characteristics of the device. Their choice depends on the installation location of the device. If it is intended only to supply boiling water to the kitchen for washing dishes, then the weakest in power, inexpensive brands will do. In the case when a water heater is planned to be installed for filling a bath with hot water or for a shower, then you need to choose much more powerful devices.
The color and design of the water heater can be selected for the overall style of the kitchen
Helpful advice! In order to check if the capacity of the water heater suits you, you need to find a container of a known volume. Then you need to turn on the tap at the required pressure and note the time during which the container will be filled with water of the required temperature. If 10 liters run up in 2 minutes, then this pressure is enough for a shower. A lower head can only be used for a tap.
Reviews of instantaneous tap water heaters
People have different attitudes towards instantaneous electric water heaters on the tap. Reviews about this device are confirmation of this.
Compact water heater is capable of heating water in a short period of time
“Our city does not differ much from other cities in terms of the quality of hot water supply. So I bought a water heater that fits right on the tap. It was recommended to me by my good friends, who put it at home long ago. It was not difficult to establish it. People said that a lot of electricity would be consumed, but I didn’t notice a big difference when paying for electricity. Now I realized that the tap turns on for a short time when washing dishes. In general, it suits me, although, of course, it cannot completely replace the hot water supply. "
Alexey Kazakov, Yekaterinburg.
“The flowing electric water heaters on the tap, which I had heard many times before, began to use a year ago. Bought it for the shower. Unfortunately, I made the wrong choice. The pressure in our water supply system is small, so the water runs very weakly through the shower head. At the same time, it very much has time to heat up in the device. You have to adapt somehow. In general, in my circumstances, I was disappointed with the device. "
Nikolay Ustyugov, Salekhard.
Water heater with electronic water heating temperature indicator
“Yesterday I installed an instantaneous water heater on the tap. Now there will always be hot water in the kitchen. Finally, my wife will stop nagging me. The device works normally, the pressure in my water supply is sufficient for it. I bought the device more expensive with a temperature controller. This is very convenient and allows you to set the required temperature without increasing or decreasing the water flow. In general, I am quite satisfied with my instantaneous electric water heaters on the tap, that's why I leave positive feedback. "
Yuri Alekseev, Saratov.
Having considered the characteristics of some types of instantaneous water heaters, it can be understood that they can only be used for one draw-off point. To supply hot water to the entire apartment, appliances with a much higher power are needed.
