The market for modern heating equipment offers gas cast iron heating boilers, which are quite widely used in rooms for various purposes. You can install such devices in a country cottage, in a residential building and in other buildings, which in cold weather need comfort and warmth.
Which boiler to choose?
If you want to purchase a cast-iron gas boiler, then you need to understand the varieties of such equipment. It is classified according to several characteristics, for example, at the place of installation. Given the particular layout of the room and the size of the area, you can choose the installation method.
Such units can be floor and mounted. The latter are characterized by low power, which does not exceed 35 kW. However, mounted models are compact, economical, and easy to maintain. If you place the boiler on the wall, this will help to save usable space. A floor-standing cast iron gas boiler may have a wider range of capacities; this parameter sometimes reaches 2000 kW. Such units are massive, but also more durable.
The choice should also be made on the basis of the functionality of the device, which can be single or dual circuit. The first version of heating units lacks a circuit for heating hot water. An external heat exchanger or boiler with automatic equipment will need to be connected to such equipment. The latter can be tied to the automation of the boiler. Water heating by a boiler is convenient if the consumption of hot water is quite large.
It is possible to attach a plate heat exchanger to single-circuit boilers. As for dual-circuit models, they can be used not only for heating, but also for the preparation of hot water. The second circuit is the boiler, which is built into the structure. Water passes through it with the help of a circulation pump and enters the intake point. Such a gas cast-iron heating boiler is more massive and has impressive dimensions. Double-circuit units are mainly floor standing.
Choosing a device by the principle of traction
Gas heating boilers can work on the principle of natural or forced draft. In the first case, oxygen enters the furnace from the room where the equipment is installed, while the combustion products are discharged to the outside using a chimney.
Such units are often used to heat private homes, their power is small and does not exceed 100 kW. Such boilers are inexpensive, the equipment is almost silent in operation, and among the additional advantages it is necessary to highlight stable operation on all ranges with a decrease in pressure in the line to 10 mbar.
If the boiler operates on the principle of forced draft, then the design provides for a fan that provides air and exhausts combustion products. Such installations are noisier and therefore require placement in an isolated space. Boilers with forced draft have a higher power, which can exceed 100 kW. An additional advantage is the high efficiency. Such equipment is used for large houses and heating of industrial premises.
Boiler selection based on burner type
Today, a cast iron gas boiler can have one of two burners. If the device has a small capacity, then it is equipped with a single-stage burner, which is characterized by reliability and simplicity. The use of more complex burners in this case is not economically feasible. If the unit is used at full power for only a limited period of time, then it may have a function for continuously regulating the burner, which is called modulation.
Model Review: Protherm Bear KLZ
If you want to install a gas boiler with a cast-iron heat exchanger in your home, then you should consider the equipment of the Protherm Bear KLZ series, which has a convenient control panel. Thanks to it, you can set the settings depending on the desired room temperature. The user has the opportunity to observe pressure indicators.
Using the timer, you can set the time intervals for heating the water in the boiler. The device is well protected from freezing, which allows it to work even at low temperatures outside the window. The pump is equipped with an anti-lock function, which prevents jamming when turned on if the boiler has been idle for more than a day.
Boiler reviews Protherm Bear KLZ
The above-described floor-standing gas boilers with a cast-iron heat exchanger, according to consumers, are good because they have electric ignition. This means that the user does not have to press a button every time to ignite the flame. The process will start automatically, eliminating wasted gas.
The device, as buyers emphasize, has a winter-summer mode, which allows, if necessary, to turn off the heating circuit and program the unit only to supply hot water. The device, according to consumers, has a long service life, which was achieved thanks to the protective functions. Among them there is one that eliminates pump blockage and condensation. The burner in the device is made of stainless steel, which also indicates durability.
Review and reviews of Beretta Novella Avtonom boilers
If you are considering single-circuit gas cast-iron boilers, then you should pay attention to the equipment of Beretta Novella Avtonom, which is presented by models with power ranging from 24 to 71.1 kW. These devices, according to consumers, have excellent performance. Among their advantages are independence from electricity.
You can buy a single-circuit model Beretta Novella Avtonom 18 for 58 059 rubles. Non-volatile gas cast iron boilers are autonomous. To turn them on, you do not need to connect to the mains. Piezo ignition will be carried out regardless of whether there is electricity in the house. Designs are adapted for use in difficult conditions. Their efficiency reaches 90%.
Finally
As a prerequisite for the operation of the above heating units, there is a gas main through which natural gas will be supplied. The latter acts as fuel for the heating system. Cast iron gas boilers began to be manufactured in the middle of the century before last. From that time to the present, they successfully compete with steel models.
Cast iron is famous for the fact that at the heart of the boiler it is characterized by higher resistance to corrosion and high temperatures than steel. The surface of cast iron is usually covered with dry rust, which acts as a shell and does not allow corrosion to pass through. Cast iron is also characterized by higher resistance to electrochemical corrosion.