It is impossible to achieve comfort in a house in winter without using a heating system. In this case, electric boilers act as one of the main components, which require proper installation in compliance with technical standards. The heating system will work efficiently if the electric boiler is connected rationally.
Features of the circuit when connected to a heating system
If we compare this equipment with gas devices, then it is easier to install them, they have excellent operational characteristics, which made such units the most common among consumers. But electric boilers have certain features that should be taken into account in order to achieve trouble-free operation of the apparatus.
As another distinguishing feature of gas boilers is the possibility of tapping anywhere in the system. Thus, you can connect an electric boiler to a circuit with forced or natural circulation of water. The device can be located at the lowest point in the system, which will guarantee maximum heating of the radiators. The discharge pipe should be located at the shortest distance from the battery level. The boiler circuit will provide for grounding on the heater. Its connection can be made to the switchboard. In this case, the zero phase of the electrical wiring should not be involved, because such actions are dangerous, the RCD identifies this and recognizes it as a short circuit in the equipment circuit.
The above connection diagram of the electric boiler must be observed in parallel with the correct piping. In addition to the equipment itself, you will need:
- thermal carrier;
- pipes;
- other components.
For reference
Harnessing is connecting a device to a system where different components are used. If the binding is done correctly, then the master will be able to achieve a slight difference between the outgoing and incoming temperatures of the thermal medium. The boiler must be connected so that the water reaches the desired value in a small circuit. As soon as it gets into a large circuit, thermal energy will be transferred to the radiators.
Connection Diagram Description
The electric boiler connection scheme implies the need to comply with a certain algorithm. To carry out the work you need to prepare:
- temperature sensors;
- shutoff and drain valves;
- a pump for circulating the coolant in the battery;
- tank;
- expansion filter;
- electric boiler.
It is necessary to start work with marking, after which you can proceed with installation. The unit should be located as far as possible from the water pipe, this is required to exclude the possibility of short circuit during leakage. The equipment can be mounted with bolts or dowels, while the surface is leveled not only horizontally, but also vertically. If we are talking about a floor unit, then you need a pallet.
Wizard Recommendations
The electric boiler connection diagram suggests the need to shut off the water supply, this should be done before starting work. Connection can be made using couplings and adapters. The electricians must include an automatic circuit breaker and an RCD of the required ratings. When connecting, it is necessary to provide grounding, but cable channels will be required for laying the wiring. The devices are responsive even to minor voltage surges, which indicates the need to use a stabilizer.
What else is important to know about the wiring diagram
The electric boiler connection scheme will differ depending on the circulation, which can be forced or natural. Thus, the circuit is emergency, collector or on the primary-secondary rings. It can also be direct or mixing. In the first case, the temperature can be changed using a burner, while the mixing one involves the use of the element of the same name, supplemented by a servo drive.
The connection scheme of the electric boiler to the heating system requires the installation of a boiler manifold taking into account the return and supply lines. The system is connected to the boiler using a pipe of the desired diameter, a three-way mixing valve is installed at the outlet, with which it will be possible to control the temperature regime. The circulation pump is installed on the return line, and in the next step, you can install the unit that controls pressure and temperature.
Most often, for the implementation of heating systems, double-circuit boilers are used, which involve the passage of water along a small circuit. As soon as the heat carrier, which can be antifreeze or water, is heated, it goes in a large circle. Connecting an electric boiler to a warm floor is one of the types of strapping. There are two more types, the first involves the installation of a hot coolant circuit (antifreeze or oil will pass through the electric boiler), and if it is about water, then it will go to the tap. The third wiring diagram is a typical connection to an electrical network.
When tying double-circuit equipment, its type is determined by the model, which may have a mixer. Its installation is quite complicated, so it is impossible to do such work with your own hands, along with the correct connection to the power supply, it will be necessary to control the connection to the hot water supply.
Cable connection diagram
The option with the installation of boiler equipment is relevant if the conditions are met under which aluminum-steel wires are brought to the house. Otherwise, an electric boiler connection cable is used. If we are talking about three-phase equipment, it is necessary to broach additional wiring, while using an aluminum steel wire, the cross section of which is 1.8 mm 2 . Specialized cables with copper core are also used. The cable should be located perpendicular to the structure and carry out the laying of a separate phase, which is required for powerful equipment.
The cost of installation work
The cost of connecting an electric boiler can vary depending on its cost. Some firms indicate a certain percentage of the price, usually it ranges from 15 to 20%. However, if the equipment is too cheap, then the minimum threshold is set, it varies from 7,500 to 10,000 rubles.
Electric boilers for private use: reviews and cost
The most popular electric boilers on the domestic market today are RusNit models, which are manufactured in Russia. If you are interested in foreign analogues, then you should pay attention to Bosch, as well as Elbeva. If you are considering electric heating boilers for a private house, the price, reviews on them should interest you. Among others, the market presents the Protherm Skat 6KR model, which will cost 45,200 rubles. It is designed for heating small rooms, and also allows you to connect several boilers installed in a cascade. This, according to customers, is a great opportunity to increase the power output. An additional advantage is the ability to connect an external boiler, which will be used in everyday life for the preparation of hot water. Power can be regulated if desired, and the equipment itself will be reliably protected by temporary exposure from sudden surges in voltage. The boiler has two heating elements, the power of each of which is 3 kW. According to customers, this equipment has a high efficiency, and a chimney is not required for the operation of the device.
Another model is the Evan C1-5, which costs 11,800 rubles. It is a device equipped with heating elements. The case is made of stainless steel, which is very popular with consumers, because it extends the life of the equipment. On the case there are: an on and off button, a temperature controller and a heating indicator. All these functions allow you to operate the equipment with a high degree of comfort. When adjusting the temperature, the power remains unchanged, which is 5 kW. These heating electric boilers for a private house, the price, reviews of which can help you make the right choice, are compact in size, you can install them on the wall.
Conclusion
Before starting work as a master, the electrical circuit for connecting an electric boiler must be considered. Otherwise, errors that could cause equipment malfunction cannot be avoided.