Furnace for a bath with a heat exchanger: the principle of operation and installation

If a stove for a bath with a heat exchanger is installed in the steam room, it will not be necessary to spend additional funds for installing the boiler, which is required for heating the water. Such designs are the most optimal options, which is due to the fact that they not only heat the room, but also provide the owners with hot water.

Principle of operation

If you decide to install a stove for a bath with a heat exchanger, then you need to first become acquainted with the principle of operation of this device. Heat exchangers are also called water circuits. Regardless of where they are located, their functioning is based on a single principle. Thermal energy from the furnace comes to the shirt or to the register. The heat carrier, which is in the heat exchanger, starts to heat up. In the tank water has a temperature below room or a little higher. Due to this difference in the circuit, there is pressure, which facilitates the circulation of the coolant. Thus, the heated water enters the tank. From it, the coolant is expended on hygienic procedures. After that, another portion of cold water enters the container. It is transferred to the heat exchanger, where it is subsequently heated. In the event that the system has a closed type, which assumes the operation of the tank as a heater, then the water should be poured even before the furnace is ignited. In this case, the temperature difference can cause deformation and damage to the metal of the heat exchanger. The circulation will continue as long as the structure maintains a sufficiently high temperature. If you install a stove for a bath with a heat exchanger, there will be no need to install a water heater, which is installed in the shower. Among other things, the owners will not have a question about the arrangement of heat sources in the premises.

What you should pay attention to?

Owners of private baths sometimes face a problem that is expressed in the fact that water can not move by gravity. This process can only be partially hampered. In this case, the circuit must be supplemented with a circulating pump. It is important to remember before carrying out such work that the system, although it will become effective, will be volatile.

Furnace installation

If you decide to choose a stove for a bath with a heat exchanger, it is important to get acquainted first with the technology of its installation. Installation work is carried out after the foundation of the foundation, which is necessarily poured into the ground by 40 centimeters. The base must rise above the ground, but you should be guided by the base of the floor. The stove should be fenced with brickwork, which is equipped with clay mortar. The heat exchanger should be installed in the furnace room. The firebox must be taken out in advance made hole, which will be located in the hall of the bathhouse.

Recommendations for specialists

When installing the oven in a sauna with a heat exchanger, the heated water will flow into the tank or connected radiators. In the latter case, pipes should be used which must be wrapped in thermal insulation. The chimney must be removed through a pre-arranged opening in the roof. It is closed with a steel canvas, in which a cutout is made. The resulting joints must be well sealed.

A few words about connecting

If you chose a stove for a bath with a heat exchanger and a water tank, it is necessary to understand the fact that the design is primarily intended for heating the steam room, the secondary task is to heat the water. It is impossible to manage several processes at the same time. Steam is in priority. For this reason it is necessary to ensure the selection of heat and to find a good storage capacity. It is desirable to equip the system in such a way that hot water flows by gravity, without using a circulation pump.

If the heat exchanger has the form of an economizer or coil, it is necessary to install a remote tank in the bath, mounting it above the furnace level. For the installation of this system it is permissible to use metal or polymer pipes, but polyethylene should not be used. The diameter of pipelines and networks where water flows by gravity must be selected in such a way that the indicator is not smaller than the dimensions of the heater's connections. It is best that the diameter is one size larger. At the same step from the tank to the heating equipment should not be more than three meters.

Self-made heat exchanger

If you decide to prefer a sauna oven with a water heat exchanger, the last component can be made independently. To do this, prepare a metal whose thickness is 2.5 mm. The above cylindrical container must be connected to a lower container of a rectangular shape. In doing so, use pipes. The main condition for performing these manipulations is the provision of all mating joints with the smallest gaps. The dimensions of the steel furnace itself, as well as the diameter of the pipes, must be selected in accordance with the dimensions of the room of the steam room.

Nuances of works

If you are making a stove-fireplace with a heat exchanger, the prepared cut billets that are cut from the metal sheet must be fixed by welding. After all the calculations have been made, and you are completely convinced that there are no mistakes in them, you can assemble the entire system completely. After final assembly, the system should be checked for strength. The following technology can be used. The lower pipe should be brewed, and then pour it with water to the very top. The outlet should be connected to the tank. Compressed air is then injected, and the manometer allows analyzing the pressure. With qualitatively executed seams, there will be no leaks. If there have been identified places through which water leaks, the liquid must be drained in order to brew again the errors. It is important to take into account when carrying out such work that the total length of pipes should be minimal.

Recommendations for installing a heat exchanger

If you have chosen a stove for a bath with a heat exchanger for heating, it is important to consider that it is much more difficult to install a water circuit in the furnace or flue as compared to the case when the heat exchanger is supplied with the purchased furnace made of metal. In the first case, the register must be prepared in advance using a thick-walled black pipe or stainless steel. If you execute a circuit with a small exchange surface, then the coolant will constantly boil, this must be eliminated. Whereas excessively large sizes, on the contrary, will cause a long warm-up. Ultimately, if you need water, it will remain cool. That is why it is so important to make a contour with an optimal exchange surface.

Conclusion

If the stove-fireplace with a heat exchanger is installed correctly, it will last for a long time without assuming the need for repair work.