What is a parapet boiler?

To maintain heat in the room, it is more profitable to use gas boilers than centralized heating, but installing such equipment in an apartment is often impossible. A parapet boiler solves this problem and will help you save a lot on bills.

What is a parapet boiler?

A parapet boiler is a device whose main function is to heat water for heating a room. If it is almost impossible to install a conventional gas boiler in an apartment: in apartment buildings there is often no flue, then the characteristics of a parapet boiler allow it to work in almost any room. In addition, it does not burn the surrounding oxygen, which is critical for an ordinary apartment with not the best ventilation. Thanks to the smoke removal system, the use of such a device is absolutely safe.

The power of the device varies from 15 to 45 kilowatts, depending on the model. Basically, a boiler is selected taking into account the heated area and other factors.

Design and main characteristics of a parapet boiler

There are several types of parapet boilers; the following classification will help you choose the right model:

• by installation method: floor and wall, left- and right-handed;
• by number of circuits: single- and double-circuit;
• by the presence of automation: energy-dependent or not.

A few words about the second classification. Single-circuit boilers perform only one function - heating the room; double-circuit ones, in addition, heat the water. The device body has special convection holes that allow you to maintain heat in the room without installing additional radiators.

A parapet boiler can operate either using a portable cylinder or from a conventional gas pipeline. The device body is made of steel; the minimum thickness is 3 mm, and a special powder coating prevents rust, even if the boiler is located in the kitchen, where there is usually high humidity.

The parapet boiler consists of the following parts:

• steel housings;
• closed combustion chamber;
• pilot burner, piezo ignition and thermocouple units;
• exhaust systems in the form of a coaxial chimney facing the street;
• heat exchanger;
• electrical sensors that control the operation of the device.

The chimney allows you to collect combustion air not from the room, but from the street. Combustion products, on the contrary, are released from the apartment. Safety is ensured by the operation of the following components: thermometer, thermocouple and draft sensor.

IMPORTANT! There is no need to install a parapet boiler yourself; leave it to the specialists.

Operating principle of a parapet boiler

When purchasing a non-volatile boiler, you need to turn on the device using the piezo ignition button. If the device is volatile, then the automation automatically turns it on. Boilers of the first type are common in Russia.

So, the parapet boiler works as follows.First, the pilot light ignites the main burner, which heats the water circulating in the heat exchanger. As soon as the water temperature reaches the required level, the burner automatically stops working. After some time, the temperature of the coolant drops again, and the igniter once again ignites the burner.

REFERENCE! All information about the operation of the boiler, its power, etc. should be found in the instructions.

Pros and cons of a parapet boiler

The advantages of a parapet boiler are:

• the equipment can be installed in any room, including an apartment;
• unlike gas boilers, the device is inexpensive;
• small dimensions allowing the boiler to be installed in almost any room;
• there is no need to install additional equipment in the form of radiators;
• a large selection of devices with different performance.

To choose the right power, you need to apply a simple formula: 2 kW per 10 square meters of heated area.

However, there are a number of problems associated with such equipment. For example, if you do not carry out regular maintenance of the device, you may not notice how the thermoplastic that connects the parts of the boiler gradually ceases to be airtight, that is, it begins to let carbon monoxide and other substances toxic to humans into the room. All this can lead to poisoning of the inhabitants of the apartment.

Another problem that owners of parapet boilers face is the coaxial chimney, which in budget models is made from ordinary steel, whereas, according to operating rules, it should only be made from stainless steel. Thus, in cheap models, soot and condensation often accumulate in the chimney, creating a chemically active environment.Gradually, the steel begins to corrode, and combustion products enter the air coming from the street to the burner. In this case, there is not enough oxygen for the normal functioning of the device, and the performance of the device decreases. In addition, soot gets onto the boiler body, thereby causing corrosion.

The chimney brings with it another problem: gusts of wind can blow out the flame inside the burner. In this regard, when installing the device, it is necessary to provide protection against the wind. The last drawback of the equipment is low power: such a device is hardly suitable for maintaining heat in a large room.

So, for a small apartment, a parapet boiler is an excellent alternative to central heating or other heating devices.