Why do I need to ground the gas boiler?

To use the gas boiler safely, it must be grounded in accordance with the regulations in force. The unit can only be put into operation after the acceptance certificate has been issued. Such documentation shall include all information on the preparatory activities carried out.

Why do I need to ground the gas boiler? Is it possible to do without it? What causes the refusal to perform such work? We will try to answer these and other questions in the material presented.

Why do I need grounding?

It is obvious that the gas boiler does not belong to the category of electrical appliances. However, in the course of functioning, he collects static on his metal skin. Over time, this is the reason for the formation of a strong field, which can lead to useless elements that are designed to control the boiler. Most often this affects the electronic board, which is responsible for adjusting the functions of the unit.

To understand why it is necessary to ground the gas boiler, it is enough to imagine its scheme. The device is mounted on the floor or installed on a wall, which does not conduct an electric current. The pipes here are made of propylene.

It is quite obvious that the accumulated static electricity tends to go somewhere. Therefore, for him there is no other option than to close on the radiator. As a result, water, which is a heat carrier, starts to conduct a current. As soon as severe colds come in, and the boiler is set at a high temperature, the water stops coping with the removal of the increased charge. The operation of the boiler becomes unsafe.

The reason for stopping the boilers that function without grounding

Why do I need grounding? Everything is simple enough. Static charge, which accumulates on the metal elements of the unit, creates a magnetic field. The latter affects the electronic circuit of the boiler, in which there is a kind of confusion. The boards lose the signal, the equipment begins to display erroneous data that do not correspond to the real, obvious state of affairs. Attempts by the user to change the situation by adjusting the settings only cause additional difficulties.

About the loop resistance

Before grounding the boiler, it is necessary to measure the resistance. The characteristic will depend on the type of unit available, as well as on the nature of the soil. So, on clay soil, the resistance measurement should give a value that does not exceed 10 ohms. If the boiler is grounded on a sandy ground, the maximum allowable resistance is not more than 50 ohms.

How is the gas boiler properly grounded?

The works are performed in the following order:

1. In a meter from the wall of the building, in which a gas boiler is installed, marking is performed on the ground. It should be in the form of an equilateral triangle with an edge of 2 meters.
2. According to the planned plan, a trench is excavated in the ground. Its depth should be of the order of 50 cm.
3. Pits are drilled at the tops of the triangular depression. Here grounding is driven in, which are steel corners.
4. Further, the installed earthing elements are connected by metal strips.
5. The next step is to attach the manufactured contour to the base of the house by welding. To do this, use metal rods.

In the completion of external works on the site, it is necessary to connect the ground to the power shield. For this purpose, a copper conductor is used. This element is fixed from one side to the base of the building with bolted connections. On the other hand, the conductor is brought to zero on the shield.

In fact, the above operations can be greatly facilitated. To do this, it is sufficient to purchase a ready-made factory modular kit specifically designed for grounding a gas boiler.

Eventually

So we found out why it is necessary to ground the gas boiler, how it is carried out. Finally, it is worth noting only that after the completion of all activities, it is necessary to call a master who will carry out commissioning. In order to put the gas boiler into operation legally, it is necessary to notify the safety inspector who will put the unit on the register and give the owner permission to use it.