Today, not everyone can install a double-circuit boiler or heating tank in an apartment or private house, but you can use all the advantages of hot water in a different way. For this, there is a flow-through electric water heater. This is a very compact device, which does not require a lot of space in small bathrooms. Also, this device will not spoil the interior.
Using these devices, you can use hot water without any problems during the period when it is not supplied. No need to change habits and suffer. Today, such equipment is produced by a mass of various companies. How to choose a suitable heater, what are they, who makes them? Read more about all this.
The principle of operation of flow heaters
Flowing water heaters are a special flask where the heater is located. Also, in addition to the heater, the device is equipped with an automation and control system. The start-up process occurs when the user opens the tap. The power of the heating element is very high, so the flowing water is heated almost immediately. As for temperature, it depends on the pressure head.
If you need water of very high temperature, then the stream is reduced. If the valve is completely closed, the device will automatically turn off. Despite the rather compact size, the heater has sufficient power.
In addition to the heating element, uninsulated spirals or gas burners can be installed in such devices as a heating element.
Types of flow heating equipment
All instantaneous water heating devices that are offered to the modern consumer can be easily divided by design features into an instantaneous or pressureless electric water heater. The difference between them is in their capabilities. Thus, a pressureless model can be installed only on one water intake point, while pressure equipment easily supplies heated water to several such points.
Features of non-pressure heating devices
This equipment is most often installed in urban apartments. The power of the heaters can vary from 3 to 8 kW. Devices from ordinary sockets are powered. During installation, the system is connected to a cold water pipe or directly to the mixer. Non-pressure solutions have only one valve in the kit.
Some manufacturers produce heaters that are equipped with a shower head. Also included may be other details.
Electric instantaneous water heater: features
This equipment for domestic use has great power, and also differs in the way of connection. If in the case of a non-pressure solution it was enough to fix it on the mixer, then it is necessary to install it in the plumbing system.
Electric instantaneous water heater can simultaneously serve several consumers. Water will be equally hot at all points. With such a device, it is difficult to notice that summer is not supplied with hot water , and the presence of such a heater will be felt at prices in the electricity bill.
The appliance must not be plugged into a household outlet. It is connected only to a three-phase network. Such networks are in apartments where, instead of a gas stove, an electric stove is installed.
Power selection
The speed with which the water will be heated depends on the power that a particular flow-through electric water heater has. Performance also depends on power.
At the same time, you should not choose the most powerful device - you need to focus on the electric power capabilities of the house. Often, the wiring power indicators in an apartment are no higher than 12 kW, and on sale you can find heaters with a power above 27 kW.
For an ordinary city apartment, the possibilities provided by a water heater up to 8 kW will be quite enough. Naturally, the device will not cope with the filling of the bath, however, it will work to take a shower or wash the dishes.
For those who want to receive everything at once and cannot imagine life without a hot bath every day, it is better to purchase a flow-through electric water heater, whose power characteristics read from 13 kW.
The choice of heater for water flow
The amount of water needed depends on the number of inhabitants of the apartment. When choosing a device, you should focus on the required water rate, which this or that device can provide. Equally important is a parameter such as performance.
This characteristic is measured in liters per minute and must be indicated in the documents for the device. Modern instantaneous heaters, on average, with power from 3 to 8 kW have performance indicators from 2 to 6 l / min. This volume (6 L) will be heated in 20 seconds.
Case and overall dimensions
If the pressure-free flowing electric water heater has a low power, then install it directly at the water intake point. It is important to find the right and appropriate place for the appliance. There will be no problem with this. Modern manufacturers make compact devices that do not take up much space. But there are quite large products. So, the average size is 150x300 mm.
Pay attention to the equipment, the case of which is made of plastic, metal, or both at once.
Regulation, automation, options
Choosing among some models, it is worth paying special attention to the presence of a control system. It can be either electronic or hydraulic. On more modern and technological models, the front of the case is necessarily equipped with various adjustments. When installing a flow-through electric pressure water heater, a photo of which can be seen in the article, please note that the temperature regulator should be available. To save energy, manufacturers have provided several modes.
Security
Since this is an electrical appliance, safe operation is an important parameter. Any modern water heater is equipped with various sensors. If any of them works, the heater will immediately shut off.
In order to avoid any problems during use, the device is equipped with fine filters and a non-return valve. The magnetic starter allows you to turn on / off the heater automatically.
Best among instantaneous water heaters
Choosing quality equipment, you should pay attention to AB Electrolux. The flowing pressure head electric water heater of this manufacturer is an intelligent device in which there are all the necessary adjustments for comfortable use.
In the line of models there are both pressure and non-pressure solutions. All equipment is completely safe, compact in size and easy to use. The power of the device is different: from 3 kW to more powerful.