How to connect an electric heating boiler?

Advantage and scope of

products Electric boilers are most often used for heating installation in a dacha and in a private house. This is due to the fact that this equipment is of low cost and at the same time you can install it yourself, without calling the master.

Among the main advantages of electric boilers are:

• products are safe( the design does not include an open flame or the presence of flammable fuel sources);
• water heaters can be in the disconnected state for up to six months, without any harm to their operability( actual for summer cottages and country houses that are visited rarely);
• dimensions of the equipment are relatively small, so you can place it in any room;
• to date there is a huge variety of electric boilers, different in power, installation method and principle of operation;
• when the water is heated, there is no soot, dangerous for humans and the environment.

Safety rules

Before we proceed to the main part of the installation of heating, I would like to pay attention to the safety of electrical work.

Firstly, , the connection of an electric heating boiler must be carried out with the electricity switched off.

Secondly , it is necessary to install it at a certain distance from other objects, namely:

• between the case and walls should be at least 5 cm of free space;
• front panel should be accessible for maintenance, 70 cm of free space is enough;
• distance to the ceiling is not less than 80 cm;
• the distance to the floor is not less than 50 cm( if the electric boiler is of a hanging type);
• the distance to the nearest pipes is not less than 50 cm.

Thirdly, , the network must be three-phase( 380 V) to reduce the current load on the wiring. If a single-phase network is used to connect a powerful boiler, the wiring may not be sustained, resulting in spontaneous combustion and short-circuit.

Fourthly, , all wire connections must be sealed and protected from water. Water entering the contacts can occur if the pipeline is damaged( for example, the coupling collapsed to the unit) and when condensate flows from the ceiling( in an unheated room).It is also recommended to protect the cable with a corrugated or cable channel from a self-extinguishing material. When the wires are ignited, these products will prevent the spread of the flame.

Electric wiring diagrams

So, to your attention, several typical schemes for connecting an electric boiler in the house with their own hands:

As you can see, the projects are quite simple and consist of the water heater itself, the transportation main( pipes), the circulation pump and radiators. Your task is to correctly connect all the elements to each other, and then to turn on the power supply.

Basic process

Install the

unit First you need to install an electric boiler in the room. As we have already said, the unit can be floor and wall mounted. In the first case, there is a special stand in the kit, on which the "landing" is made.

In order to hang the boiler on the wall, it is necessary to prepare an anchor with dowels and a drill with a suitable drill. First, mark the wall using a tape measure and a marker. The holes must be placed perfectly evenly in the horizontal plane. Further we drill out the marked places, we hammer in them dowels and we twist the anchor. After the anchor tightly seated inside the wall, you can hang the electric boiler.

We draw your attention to the fact that the electric boiler must be installed perfectly evenly in both the horizontal and vertical planes. Any bias can affect the operability and life of the equipment.

We supply wiring

Since the electric water heater has a high power, it is necessary to connect it not from the socket, but directly from the power supply. To do this, a separate line from the junction box in the room must be led to the connection point of the boiler. It is better to use a cable laying by a cover method, becausein this case the line will be protected from mechanical damage and the appearance of the room will not deteriorate.

It should be noted that a large cable must be used to power the boiler, which can withstand sufficiently high current loads. On how to properly calculate the cross-section of the cable, we talked in the relevant article, which you are strongly advised to read.

So we draw your attention to the fact that small-capacity water heaters( up to 7 kW) can be connected to a single-phase network, which is often found in old-style and old-style apartment blocks. Well, the last nuance at this stage, which you should be aware of - electric boilers up to 3.5 kW can work from the outlet, and not from a separate line from the switch box. Low-power boilers are ideal for connection in an apartment, because in this case, the wiring, as a rule, single-phase and do a new wiring is not always an appropriate solution.

Installing the protective equipment

When all lead-in wires are connected to the electric boiler, it will be necessary to additionally protect it with an automatic switch and a RCD installed in the main switchboard. The purpose of the first device is to protect the equipment from short circuit and overload of wiring. Connecting the electric boiler through an RCD will protect you from leakage currents.

It is also recommended to connect the voltage regulator.even small jumps can disable the unit.

The fact that it is necessary to ground an electric boiler, I think, should not be said. The main requirement is that the ground wire is routed directly from the bus to the equipment body.

Starting

When all wiring elements are connected, all connection points must be checked. Bare contacts should not be, in fact, as well as damaged insulation.

It is also necessary to check all couplings, cranes and pipe joints. Only after a qualitative inspection of the heating system can you go to its launch. First we open the valves that are connected to the equipment, after which we turn on the electric boiler.

Note the operation of the temperature and pressure sensors. The nominal values ​​are indicated in the instructions in the kit. With obvious deviations, it is better to call a master.

Also we bring to your attention a graphic example of installation works:

What can you save on?

Electric heating is quite expensive, compared to gas. To make it economical, it is recommended to consider the following tips:

1. Buy a two-tariff electricity meter and turn on the heating at night. In the daytime, as a rule, everything is at work and there is no need to operate the boiler. It is better to properly heat the room at night, because at that time the price per 1 kW of electricity will be much less.
2. Use automation that will allow you to turn on the heating at a specific time, or only when the temperature drops to the set value. In this case, the unit will only work when absolutely necessary.
3. The highest heating of radiators is achieved by placing the boiler at the lowest point of the heating system.
4. Add to the heating system a modern solution - a warm floor, it will allow more efficient use of the consumed heat throughout the room.
5. We return to the use of two-rate counters. Another option for their rational use for heating is to buy heat accumulators. These tanks with water can warm up the room all day long, while the liquid will be heated at night( when electricity will cost much less).

That's all I wanted to tell you about installing and connecting an electric heating boiler yourself. Finally we recommend that you buy devices only from quality manufacturers, so that the heating in the house has served as long as possible. Among the leaders in the production of water heaters can be identified three most optimal in price and quality: Protherm( proterm), Nevsky( its connection we reviewed in the video) and Galan.
Also read:

• Economical house heating system
• Wiring diagram of electric boiler to
• network Proper grounding in a private house