The electric boiler for heating is designed for cottages without a centralized temperature control system in the premises. Devices are divided into induction, heating elements, electrode. Quality models are offered by Protherm, Kospel, EVAN, Vaillant, RusNIT manufacturers. Before choosing an electric boiler, you need to determine the power, installation methods, type of fuel, and equipment.
Content
Advantages and disadvantages
An electric boiler for heating a private house has the following advantages:
- simple installation;
- light weight;
- compact design;
- safe operation (no open fire);
- low maintenance and repair costs;
- no noise during operation;
- environmental friendliness (no harmful emissions);
- no need for chimneys;
- no special documentation is required;
- non-waste work;
- budget cost.
The choice of an electric boiler should be carried out taking into account the shortcomings of the unit:
- large amount of electricity consumption;
- high price of heat carriers (compared to gas heating and solid fuel systems);
- malfunctions during a power outage;
- insufficient power for buildings over 200 m².
To prevent malfunctions in the system, the electric boiler is combined with a backup heater operating on solid fuel.
Types of boilers by type of heating element
Electric boiler for home heating is available in 3 types:
- heating element;
- electrode;
- induction.
Tenovye
Tenovye electric boilers for home heating are characterized by a simple and compact design, affordable price. The devices have a pressure force regulation system (in case of a malfunction, the device will turn off). The unit consists of several heating coils or plates located in a container with liquid. The heating power of the coolant is regulated by means of a stepped connection of the spirals.
When the liquid in the boiler cools down, the heating elements are connected automatically. The maximum heating temperature can be fixed at the required level (+30…+80°C) using the control panel. The device uses different coolants (antifreeze, water, oil). When water is used as a heat carrier, scale may form, which reduces the efficiency of the device.
Electrode boilers
Electrode electric boilers for the home are compact, budget.A simple constructive solution does not require equipping with a volumetric tank and pumps for circulating liquids. The principle of operation of the device is based on the use of electrodes with different charges. When changing the polarity of the electrodes with a frequency of 50 Hz, an alternating current is formed. When current is passed through water with high electrical resistance (1300 Ohm/cm²), the coolant heats up.
The device is safe to use. If a leak occurs and the electrodes are disconnected, the heating of the liquid stops. The device uses only water with mineral additives, the use of antifreeze in the design is prohibited. The electrodes need to be replaced regularly.
induction
Induction heating boilers are based on the principle of electromagnetic induction. The devices are transformers placed in a metal case. The induction coil is built into the boiler compartment, isolated from the circulating liquid. The transformer also includes a core or piping system that circulates the heated fluid. Water with mineral additives, antifreeze can be used as a heat carrier.
The devices are characterized by a high efficiency, therefore they are intended for spacious private houses and outbuildings. The absence of detachable connections eliminates the occurrence of leaks, overheating of the coolant, simplifies maintenance and repair. There is no scale in the unit. The devices have a high degree of fire safety. However, it is necessary to take into account the large dimensions and high price of the units.
Connection type
Connection of heating radiators operating with a power of 6 kW is carried out to a single-phase electrical network (220 V). For devices with higher power, a connection to a three-phase 380 volt line is required.
Before connecting the device, it is necessary to calculate the size of the cross-section of the electrical wiring. Using thin wires causes them to overheat. Boilers with a capacity of 6 kW require electrical wires with a cross section of at least 4 mm².
Number of circuits
Before choosing an electric boiler, it is necessary to determine the type of device (single or double circuit).
A device with 1 circuit provides heating of the coolant and distribution of thermal energy throughout the heating system. The unit is compact, inexpensive, with a simple design solution and comfortable operation.
Double-circuit heating boilers are more productive, durable, and of high quality. The devices are designed to heat the house, provide water supply for domestic tasks. When using double-circuit devices, it is not necessary to install a boiler for heating water.
Power calculation
Before choosing an electric boiler, it is necessary to calculate the heating power, taking into account the area of \u200b\u200bthe house. The dimensions of the space (in m²) must be divided by 10. The indicator indicates the maximum possible power of the unit.
It is estimated that 40 W of electricity is required to heat 1 m² of area. The calculations take into account the indicators of heat loss. For the middle zone of Russia, a coefficient of 1.5 is used, for the southern regions - 0.7-1, for the northern territories - 1.5-2.
The device is not the most economical heating boiler, because. 10-12 kW is needed to heat a building with an area of 100 m².
Boiler regulation and control system
The power control of the boiler can be smooth or stepwise.
The design of devices with step regulation includes autonomous heating components. To reduce the temperature and consume electrical energy, it is necessary to sequentially turn off several elements.
In a standard device - 3 elements of varying degrees of heating power. 4 levels of regulation are available within the range of 25-100%. To expand the parameters of possible temperature regimes, it is necessary to install valves or a thermostat.
Smooth power control is available with a built-in rheostat. The device allows you to gradually transfer the temperature of the unit within + 30 ... + 80 ° С.
Electric boilers are also controlled by means of a circulation pump, filters, safety valves, an emergency system, pressure control sensors, etc. The purchase of additional items will increase the cost of the device itself.
type of instalation
Electric boilers for a private house can be installed on the floor or attached to wall panels.
Wall-mounted appliances are compact, lightweight, and save space. However, it is necessary to provide for sufficient insulation of walls and roofs.
Floor devices are characterized by high power, bulky design and heavy weight. The devices can use volumetric containers for the coolant.
Rating of the best manufacturers of electric boilers
Before choosing an electric boiler, you need to determine the quality, price category, and a reliable manufacturer.
In the ranking of quality brands, products from manufacturers:
- Protherm;
- Buderus;
- Kospel;
- Vaillant;
- EVAN;
- RusNIT.
When deciding which electric boiler is better, it is necessary to take into account the power suitable for the dimensions of the room.
Protherm Skat 12 KR 13
For example, the Protherm Skat 12 KR 13 Unit is recommended for compact houses (up to 120 m²) or apartments. The device is reliable, durable, economical, silent. When heating the building, a large consumption of electrical energy is required, and then the temperature is maintained in an economical mode.
The heating temperature of the device varies in the range of +40 ... + 85 ° С, the efficiency of the unit is 99.5. The device is easy to install, aesthetically pleasing, supplemented with pressure control sensors, a device for shutting down in an emergency or overheating. The device is equipped with a tank of 7 liters, a smooth power regulator of the heating system.
Vaillant eloBLOCK VE 12
Electric heating element "Vaillant eloBLOCK VE 12" is compact, energy efficient, durable, with a simple design. The device is optimal for heating a space of 100-120 m². Accuracy in settings is ensured by a microprocessor and a backlit LCD monitor.
There is a built-in sensor for adjusting the temperature regime to changes in weather conditions. Management is carried out remotely and stationary. The device is equipped with 2 heaters (heaters) of 6 kW. There is a mode of operation in the summer, prevention of liquid freezing, integration with the "warm floor" system.
Buderus Logamax E213-10
The Buderus Logamax E213-10 is designed to be mounted to a wall panel using brackets. The design of the device is optimal for the residential area of the house or the utility block. The power of the unit is 10 kW, the capacity of the tank is 7 liters. The device is equipped with a pump.The temperature is controlled by a thermostat, a stabilizer, a sensor that blocks the device in case of overheating. The device differs in high-quality assembly, the compact sizes. The structure is made of steel, complemented by reliable thermal insulation.
Kospel EKCO. L2 12
Electric boiler for a private house Kospel EKCO. L2 12 is wall mounted. The unit is optimal for cottages with an area of 100-120 m². The power supply of the device is carried out from the mains up to 380 V. The weight of the device is 18 kg, the efficiency is 99.4%, the working pressure is 3 bar. The device can be combined with hot water boilers. The device is equipped with a built-in temperature regulator, a pump with an automated operating system, and a pressure gauge.
The control system ensures efficient, quiet operation. The heat carrier temperature is regulated within +20…+85°С. Management includes 6 steps. The device has systems that prevent overheating or freezing of the liquid. In case of emergency, the device switches off automatically with the help of a blocker.
RusNIT 208M
In the list of high-quality inexpensive models - RusNIT 208M. The device is compact, designed for mounting to a wall panel. The device can be the main one or supplement the heating system of country cottages, household buildings up to 80 m². The possibility of stepwise power adjustment up to 30, 60 or 100% is provided. The air heating temperature range is +5…+30°C.
The device is connected to the mains 220-380 V. The thermal switch controls the heating of the liquid up to +90°C. A special sensor prevents the device from turning on when the tank is empty.Protection of the housing against moisture ensures the possibility of installing the device in the bathroom. A pump is provided. The maximum level of boiler temperature increase can be adjusted within +35…+85°С.
Evan Warmos QX-18
The best electric boiler with high domestic production is Evan Warmos QX-18. The tank capacity is 12 liters, power adjustment is three-stage. According to the technical parameters, the device is universal and is intended for large areas (housing or production). The housing combines steel heating elements, a membrane tank, and a pump.
A liquid crystal monitor is installed in the lower unit of the device; the control panel can be closed with a special bar. The functioning of the device is controlled by a microprocessor and is performed in an automated or manual mode. Stabilization of the device during voltage changes is provided. The unit is equipped with a thermostat, sensors, emergency indicators.
Similar articles:
