RU108567U1 - BOILER HEATING WATER HEATING PIG-IRON GAS - Google Patents

Abstract

A cast-iron gas-fired heating boiler is designed for heat supply of individual houses (cottages) equipped with a water heating system with a working coolant pressure of up to 0.3 MPa (3 kG / cm ² ) and a temperature of up to 95 ° C, with forced or gravitational (natural) circulation coolant during the combustion of low-pressure natural gas in automatic mode according to the coolant temperature. The technical result of the claimed utility model is: - an increase in the efficiency of a heating boiler made of cast iron gas in comparison with a boiler adopted as a prototype of a heating heating boiler with a selection of hot water; - energy saving and resource saving (gas consumption is reduced to 30%); - reducing the amount of harmful emissions into the atmosphere, improving the ecology of the air basin; - improving the accuracy of regulation of the set heating parameters, which ensures the required comfort in the room; - small dimensions and light weight of the boiler allow you to install the boiler heating cast iron gas boiler without reinforcing the design of the floors. The technical result is achieved by the fact that, in comparison with the utility model adopted as a prototype, a heating water heating boiler with a selection of hot water, comprising a housing with a base, a connection pipe to a chimney, a heat exchanger inserted into the internal volume of the boiler, which encloses the combustion chamber and forms a closed boiler cavity coolant medium circuit, main burner collector with ignition burner, viewing window for observing the operation of the ignition and main burners and ignition of the ignition burner, nozzles for connection to the heating system, in the claimed utility model, the heating boiler is made of cast iron gas in the form of a block prefabricated structure of a rectangular shape, closed with decorative panels with thermal insulation, including a top panel, a front panel, a removable front panel and a dashboard, hiding said heat exchanger is made of cast iron sections with side ribs and needle-shaped heat-exchange surfaces forming convective flues for the passage of hot flue gases, while the cast-iron sections t the heat exchangers are interconnected by hermetically tapered nipples and secured with tie rods, the aforementioned combustion chamber laterally limited by water-cooling sections of the heat exchanger, and the front and rear fireproof thermal insulation, while the boiler is equipped with an igniter mounted on the front panel, and the mentioned main burner manifold with nozzles is mounted on said removable face plate, which also has the said viewing window for monitoring the operation of the igniter and the main burners and the ignition of the ignition burner, while on top of said heat exchanger there is a smoke collector made in the form of a welded box construction with said pipe for connecting to a chimney, the boiler is equipped with safety automatics with a gas burner device containing a draft sensor mounted on said smoke collector, made with the possibility of shutting down the boiler in the absence of draft in the chimney, a flame sensor mounted on the aforementioned front panel and made in the form of a thermo pairs, a temperature and pressure indicator of the coolant installed on the said instrument panel, a safety and control unit tightly screwed onto the threaded end of the said collector of the main burners of the gas burner device, while a handle for setting the temperature of the coolant is mounted on the housing of the said safety and control unit, the aforementioned safety unit and controls contains a safety valve, gas pressure regulator, coolant temperature regulator and devices for regulating power the aforementioned ignition burner, while the aforementioned safety and control unit is connected to the draft sensor, a flame sensor with an indicator of the temperature and pressure of the coolant, and the safety clans of the safety and control unit are connected to their gas inlet to the gas supply network, in which the gas supply valve is located gas to the safety automatics with a gas burner device, and the output channel of the safety and control unit is connected to the collector of the main burners of the gas burner device, and the safety automatics and with a gas burner device configured to automatically control the temperature of the water leaving the boiler, stop the gas supply when the flame of the ignition burner goes out, there is no draft and when the pressure in the network drops below the minimum, and the gas pressure regulator is configured to maintain a constant gas pressure when passing gas pressure regulator and maintaining a constant gas pressure Rvykh 900 + -150 Pa. in the output channel connected to the collector of the main burners of the gas burner device when the pressure of the coolant in the heating system is higher than permissible.

Description

A cast-iron gas-fired heating boiler is designed for heat supply of individual houses (cottages) equipped with a water heating system with a working coolant pressure of up to 0.3 MPa (3 kG / cm ² ) and a temperature of up to 95 ° C, with forced or gravitational (natural) circulation coolant during the combustion of low-pressure natural gas in automatic mode according to the coolant temperature.

Of the analogues of the prior art, the closest in number of essential features to the claimed utility model, the prototype can be adopted utility model "Heating boiler with hot water", comprising a housing with a base, a connection pipe with a chimney, a heat exchanger inserted into the internal volume of the boiler, surrounding the furnace a chamber and forming with the cavity of the water jacket a closed loop of the heat transfer medium, the collector of the main burners with the ignition burner, a viewing window for observing the operation of the ignition and main burners and the ignition of the ignition burner, nozzles for connecting to the heating system (RU No. 23959, MKP: F24H 1/00, application for utility model No. 20011130587 dated November 15, 2001, authors: Rodionov OG, Pakhomov A. I., Ermolaev A.P., Ovchinnikov N.F., Podosinovskaya R.P., patent holders: Rodionov Oleg Gennadievich, Pakhomov Anatoly Ivanovich, Ermolaev Alexander Pavlovich, Ovchinnikov Nikolay Fedorovich, Podosinovskaya Raisa Petrovna, patent published July 20, 2002. in Bulletin No. 20).

The disadvantages of a useful model adopted as a prototype are:

- low efficiency boiler heating water with the selection of hot water;

- insufficient accuracy of regulation of the set parameters of heating;

- large dimensions and heavy weight of the boiler.

The technical result of the claimed utility model is:

- increase the efficiency of the boiler heating hot-water cast iron gas in comparison with the boiler adopted for the prototype heating boiler hot water with the selection of hot water;

- energy saving and resource saving (gas consumption is reduced to 30%);

- reducing the amount of harmful emissions into the atmosphere, improving the ecology of the air basin;

- improving the accuracy of regulation of the set heating parameters, which ensures the required comfort in the room;

- small dimensions and light weight of the boiler allow you to install the boiler heating cast iron gas boiler without reinforcing the design of the floors.

The technical result is achieved by the fact that, in comparison with the utility model adopted as a prototype, a heating water heating boiler with a selection of hot water, comprising a housing with a base, a connection pipe to a chimney, a heat exchanger inserted into the internal volume of the boiler, which encloses the combustion chamber and forms a closed boiler cavity coolant circuit, main burner manifold with ignition burner, inspection window for observing the operation of the ignition and main burners and ignition of the ignition burner, nozzles for connection to the heating system, in the claimed utility model, the heating boiler is made of cast iron gas in the form of a block prefabricated structure of rectangular shape, closed with decorative panels with thermal insulation, including a top panel, a front panel, a removable front panel and a dashboard, said heat exchanger made of cast-iron sections with side ribs and needle-shaped heat-exchange surfaces forming convective flues for the passage of hot flue gases, while the cast-iron sections t the heat exchangers are interconnected by hermetically tapered nipples and secured with tie rods, the aforementioned combustion chamber laterally limited by water-cooling sections of the heat exchanger, and the front and rear fireproof thermal insulation, while the boiler is equipped with an igniter mounted on the front panel, and the mentioned main burner manifold with nozzles is mounted on the said removable front panel, which also has the aforementioned viewing window for monitoring the operation of the igniter and the main burners and the ignition of the ignition burner, while on top of the said heat exchanger there is installed a smoke collector made in the form of a welded box construction with the mentioned pipe for connecting to the chimney, the boiler is equipped with safety automatics with a gas burner device containing a draft sensor mounted on the mentioned smoke collector, made with the possibility of shutting down the boiler in the absence of draft in the chimney, a flame sensor mounted on the aforementioned front panel and made in the form of a thermo pairs, a temperature and pressure indicator of the coolant installed on the said instrument panel, a safety and control unit tightly screwed onto the threaded end of the said collector of the main burners of the gas burner device, while a handle for setting the temperature of the coolant is mounted on the housing of the said safety and control unit, and the said safety unit and controls contains a safety valve, gas pressure regulator, coolant temperature regulator and a device for regulating power the aforementioned ignition burner, wherein said safety and control unit is connected to a draft sensor, a flame sensor with an indicator of the temperature and pressure of the coolant, and said safety valve of the safety and control unit is connected to its gas supply network, in which the gas gas supply valve is located to safety automatics with a gas burner device, and the output channel of the safety and control unit is connected to the collector of the main burners of the gas burner device, moreover, the safety automatics with a gas burner device it is possible to automatically control the temperature of the water leaving the boiler, stop the gas supply when the flame of the ignition burner goes out, there is no draft and when the network pressure drops below the minimum, and the gas pressure regulator is configured to maintain a constant gas pressure when passing the regulator gas pressure and maintaining a constant gas pressure Rvykh 900 + -150 Pa. in the output channel connected to the collector of the main burners of the gas burner device when the pressure of the coolant in the heating system is higher than permissible.

A cast-iron heat exchanger installed in the internal volume of the boiler body is made of cast-iron sections with side fins and needle-shaped heat exchange surfaces forming convective flues for the passage of hot flue gases.

The cast-iron heat exchanger, with side ribs and needle heat-exchanging surfaces, has a developed convection surface and provides good heat transfer to the heat transfer agent during boiler operation. Due to the fact that a large volume of a water jacket quickly heats up with a combustion chamber, the efficiency of a heating hot-water cast-iron gas boiler is increased relative to a hot-water heating boiler.

The technical result of the claimed utility model is energy saving and improving the safety of gas-using devices when the boiler is operating due to:

- regulation of gas pressure;

- traction stabilizer;

- needle surface of a cast-iron heat exchanger.

The technical result of energy saving and increased safety during the operation of the boiler is achieved by the fact that the safety automatics with a gas burner device maintains a constant gas pressure when passing through a gas pressure regulator and maintains a constant gas pressure Pout. 900 + -150 Pa. in the gas outlet channel to the manifold of the gas burner device. This ensures a constant flow of gas coming through the gas pressure regulator, reduces gas consumption and increases the safety of the gas burner device, since it automatically maintains the set gas pressure in the manifold of the main burner of the gas burner device (GGU) when the inlet gas pressure increases from 1300 Pa to 3000 Pa (short-term up to 5000 Pa);

Safety automation with a gas burner device, which is capable of automatically cutting off gas supply when the ignition flame goes out, when there is no draft, and when the network pressure drops below the minimum, provides energy and resource saving (gas consumption is reduced to 30%) and improves the accuracy of regulation of the set heating parameters, which provides the required comfort indoors. The small dimensions and light weight of the boiler allow you to install a boiler of a heating hot-water cast-iron gas without reinforcing the design of the floors.

In the utility model adopted as a prototype, “Safety Automation with a Gas Burner,” a constant gas pressure is not maintained when passing through a gas pressure regulator and a constant gas pressure is Pout. 900 + -150 Pa. in the gas outlet channel to the manifold of the gas burner device. To eliminate this drawback in a utility model adopted as a prototype, with an increase in gas consumption, the gas burner device is adjusted.

In addition, the boiler heating cast iron gas has an additional technical result:

1. Equalization of air pressure in the suction zone into the ejector of the main burners and near the exit of the gas-air mixture from the slot grooves with the open location of the main burners, with the formation of stable combustion of the gas-air mixture with constant vacuum in the combustion chamber without adjustment.

2. The possibility of blowing out the ignition burner during short-term rollover of the draft in the chimney is excluded.

An additional technical result is achieved by the fact that the cast iron gas heating boiler is equipped with a draft stabilizer made in the form of a slit with a damper located inside the smoke collector, and the draft stabilizer is capable of equalizing the air pressure in the suction zone of the aforementioned main burners and near the outlet of the gas-air mixture from slot slots with an open arrangement of the main burners, providing stable combustion of the gas-air mixture with constant vacuum in the mentioned removed furnace chamber without adjustment and with the possibility of eliminating the blowing of the aforementioned ignition burner during a short-term rollover of the draft in the chimney.

In addition, the heating boiler, cast iron gas has an additional technical result, the ability to control the amount of air supplied to the combustion chamber is achieved by the fact that the boiler is equipped with a distribution grid.

In addition, an additional technical result, improving the safety of the boiler is achieved by the fact that the boiler has a cast-iron gas-fired heating boiler, which is equipped with a safety valve located at the top of the water jacket and capable of triggering when the pressure in the heating system increases 3 + -0.1 kgf / cm2 .

In addition, an additional technical result of the utility model, improving the safety of the boiler is achieved by the fact that the safety valve of the safety and control unit is made in the form of an electromagnetic valve connected by an electric circuit to the draft sensor and a thermocouple installed in the ignition burner unit on the panel of the gas burner device and made with the ability to connect to the safety and control unit through the electrical circuit of the safety sensors, including the limit temperature sensor and with the possibility of their operation from the emf of the thermocouple mentioned.

The inventive utility model "Boiler heating hot-water cast-iron gas" is illustrated by drawings, which depict:

Figure 1. Boiler heating cast iron gas, front view.

Figure 2. Cast iron gas heating boiler, side view.

Figure 3. Cast iron gas heating boiler, top view.

Figure 4. Cast iron gas heating boiler, front view in section.

Figure 5. Cast iron gas heating boiler, general view.

6. Section AA in Fig. 4.

The essence of the utility model.

A cast-iron gas-fired heating boiler is made in the form of a block prefabricated structure of a rectangular shape, closed with decorative panels with thermal insulation. The boiler is made of cast iron gas heating boiler, comprises a housing 1 (Figs. 1-5) with thermal insulation 2 (Fig. 4), decorative thin-sheet panels including a top panel 3 (Figs. 2-5), a front panel 4 (Fig. 4), removable front panel 5 (figure 1, 2, 4, 5), the instrument panel 6 (figure 1-5). Bottom of the housing 1 (Figs. 1-5) of the boiler, the base 7 (Figs. 1, 4) and supports 8 (Figs. 1, 2, 4) are made. A cast-iron heat exchanger 9 (Fig. 4) is installed in the internal volume of the boiler body 1 (Figs. 1-5), forming a water jacket 10 (Fig. 4) with a cavity, which has a developed convection surface, and a closed loop of the heat-transfer medium. The heat exchanger 9 (figure 4) is made of cast-iron sections with side ribs and needle-shaped heat exchange surfaces forming convective flues for the passage of hot flue gases. The cast-iron sections of the heat exchanger 9 (Fig. 4) are interconnected by hermetically conical nipples (not shown in the drawing) and secured with tie rods (not shown in the drawing). The boiler is a hot-water cast-iron gas boiler, contains a combustion chamber 11 (Fig. 4, 6), which is laterally limited by water-cooled sections of the heat exchanger 9 (Fig. 4), and front and rear fireproof thermal insulation 2 (Fig. 4). On a removable front panel 5 (Figs. 1, 2, 4, 5) of the boiler, a collector 12 (Fig. 4) of the main burners 13 (Figs. 4, 6) is mounted. On the front panel 4 (Fig. 4) of the boiler, the main burners 13 (Figs. 4, 6) of atmospheric type are mounted with nozzles installed with grooves up. The boiler is equipped with an igniter unit 14 mounted on the front panel 4 (Fig. 4) (Fig. 4, 6), with an igniter 15 (Fig. 4, 6). The main burner 13 (Fig. 4, 6) is made of heat-resistant stainless steel and placed evenly under the heat exchanger 9 (Fig. 4), creating a uniform thermal field in the combustion chamber of the combustion chamber 11 (Fig. 4, 6), which eliminates the formation of local zones overheating of the heat exchanger 9 (figure 4) and its destruction. The cast iron gas-fired heating boiler is equipped with a distribution grid 16 (Fig. 4), mounted on top of the base 7 (Figs. 1, 4) of the boiler and configured to control the amount of air supplied to the combustion chamber 11 (Figs. 4, 6). On top of the heat exchanger 9 (Fig. 4), through a heat-resistant gasket 17 (Figs. 1, 4), a smoke collector 18 (Figs. 1-5), made in the form of a welded box-like construction with a pipe, is hermetically mounted and bolted (not shown); for connection to a chimney. The cast iron heating gas boiler is equipped with a draft stabilizer (not shown in the drawing), made in the form of a slit with a shutter, located inside the smoke collector 18 (Figs. 1-5). The draft stabilizer (not shown in the drawing) is configured to equalize the air pressure in the suction zone into the ejector of the main burners 13 (Figs. 4, 6) and near the exit of the gas-air mixture from the slot grooves when the main burners 13 are open (Figs. 4, 6) , ensuring stable combustion of the gas-air mixture with constant vacuum in the combustion chamber 11 (Fig. 4, 6) without adjustment and with the possibility of excluding the blowing of the ignition burner 15 (Fig. 4, 6) with a short-term rollover of the draft in the chimney. At the extreme sections of the heat exchanger 9 (Fig. 4), threaded holes 19 (Figs. 2, 4) are made, into which, in the area of the combustion chamber 11 (Figs. 4, 6), a nozzle 20 made in the form of a drive is tightly screwed (Figs. 1, 3) , 5) for connecting the heating system return line to the pipeline, which serves to supply chilled water to the boiler, and from above, is tightly screwed into the threaded hole 19 (Fig. 2, 4), the outlet pipe 21 made in the form of a drive (Fig. 1, 3 , 5) for connecting to the supply pipe of the discharge line of the heating system, which serves to divert hot water from the cat and the heating system. The bottom is tightly screwed into the threaded hole 22 (figure 2), made in the form of a drive, the drain pipe 23 (figures 1, 3, 5). At the upper point of the boiler’s water jacket, a safety valve 24 is installed (Figs. 1-5), which can be activated when the pressure in the heating system increases 3 + -0.1 kgf / cm2. The boiler is equipped with a safety automatics with a gas burner device containing a draft sensor 25 (Fig. 4), mounted in front on the front surface of the smoke collector 18 (Figs. 1-5), configured to turn off the boiler in the absence of draft in the chimney, a flame sensor 26 ( 6), made in the form of a thermocouple and mounted on the front panel 4 (figure 4). On the instrument panel 6 (Figs. 1-5), an indicator of temperature and pressure of the coolant 27 is installed (Figs. 1, 2, 4, 5). Safety automation with a gas burner device comprises a safety and decontamination unit 28 (Fig. 4) tightly screwed onto the threaded end of the main burner manifold 12 (Fig. 4) of the gas burner device. On the housing of the safety and control unit 28 (Fig. 4), a handle for setting the temperature of the coolant 29 (Fig. 4) is mounted. The safety and control unit 28 (Fig. 4) contains a safety valve (not shown in the drawing), a gas pressure regulator (not shown in the drawing), a coolant temperature controller (not shown in the drawing) and a device for regulating the power of the ignition burner (not shown in the drawing) shown). The control and safety unit 28 (Fig. 4) is connected to the thrust sensor 25 (Fig. 4), the flame sensor 26 (Fig. 4), and an indicator of the temperature and pressure of the coolant 27 (Figs. 1, 2, 4, 5). The safety and control unit 28 (Fig. 4) is connected by its input to the gas supply network, in which there is a gas valve (not shown) of the gas supply to the safety automatics with a gas burner device, and the output channel of the safety and control unit 28 (Fig. 4) ) is connected to the collector of the main burners 12 (figure 4) of the gas burner device. On the removable front panel 5 (FIGS. 1, 2, 4, 5) of the boiler, a viewing window 30 (FIG. 4) is made for monitoring the operation of the main burners 13 (FIGS. 4, 6) and the pilot burner 15 (FIG. 4) and for ignition of the ignition burner 15 (figure 4). The gas pressure regulator, built into the safety and control unit 28 (Fig. 4), ensures uniform combustion of the gas-air mixture on the main burners 13 (Figs. 4, 6) with constant heat output regardless of the gas pressure in the network, without requiring adjustment. Safety automation with a gas burner device is configured to automatically control the temperature of the water leaving the boiler, stop the gas supply when the flame of the ignition burner 15 is extinguished (Fig. 4), if there is no draft, and if the coolant pressure in the heating system exceeds the permissible value.

With forced circulation of the coolant due to the operation of the circulation pump is achieved:

- reducing the diameter of the distribution pipelines;

- ease of implementation of heated floors;

- reducing the volume of coolant and, as a consequence, the inertia of the heating system (ensuring an operational response to temperature fluctuations);

- equalization of temperature in heated rooms due to the operation of the circulation pump.

The cast iron gas-fired heating boiler operates in automatic mode at a given temperature in the heating system, has several degrees of protection in emergency situations:

- when the flame goes out on the ignition burner;

- in the absence of traction;

- when the pressure of the coolant in the heating system is exceeded above the permissible value.

The work of the boiler heating hot-water cast-iron gas.

- check the draft by bringing the paper strip to the viewing window 30 on the front panel 4 of the gas burner device (GGU);

- Ventilate the boiler furnace for 10 minutes;

- turn the knob for setting the temperature of the coolant 29 to the position "IGNITION";

- press the “START” button (not shown in the drawing) until it stops and set the match for air-gas mixture on the ignition burner 15 through the inspection window 30.

- keep the “START” button (not shown in the drawing) pressed for 60 seconds, after releasing the button, the air-gas mixture on the ignition burner 15 should light;

- turn the knob for setting the temperature of the coolant 29 to the mark of the required temperature of the coolant. The gas-air mixture on the main burners 13 should ignite.

After the combustion chamber 11 has melted, the heat along the needle heat-exchanging surfaces of the heat exchanger 9, forming convective flues for the passage of hot flue gases, flows upward and heats the water jacket 10, which has a developed convection surface. Heated water enters through the outlet pipe 21 into the supply pipe forcing the heating lines, heats the batteries and heating pipes and then, after heat is transferred through the batteries and heating pipes to the rooms, returns through the pipe 20 to the return pipe of the heating system, which serves for supplying chilled water to the boiler . Thus, a closed cycle of the water circuit in the pipelines injects the heating line to the pipelines of the return line of the heating system. Upon reaching the preset boiler water temperature, the automatics shuts off the gas supply to the gas burner device (GGU) and turns it on again when the temperature drops to a value determined taking into account the embedded zone of the hysteresis, which should not exceed 10 degrees C. Gas supply to the main burners 13 in the gas burner device of the GGU boiler in the process of its operation automatically stops in the following cases:

- when the pressure of the coolant in the heating system is exceeded above the permissible;

- insufficient traction in the combustion chamber 11 of the boiler;

- extinction of the flame of the ignition burner 15;

- heating the water in the boiler above 95 degrees C, when the pointer controls the temperature and pressure of the coolant 27.

Claims (5)

1. A cast iron gas-fired heating boiler, comprising a housing with a base, a chimney connection pipe, a heat exchanger introduced into the boiler’s internal volume, which encloses the combustion chamber and forms a closed coolant circuit with a water jacket cavity, the main burner manifold with an ignition burner, an observation window for observation at the work of the ignition and main burners and the ignition of the ignition burner, pipes for connecting to the heating system, characterized in that the boiler is a heating boiler made of cast iron gas The second one is made in the form of a block prefabricated structure of a rectangular shape, closed with decorative panels with thermal insulation, including a top panel, a front panel, a removable front panel and a dashboard, the aforementioned heat exchanger made of cast-iron sections with side ribs and needle-shaped heat exchange surfaces forming convective flues for passage incandescent flue gases, while the cast-iron sections of the heat exchanger are interconnected by hermetically conical nipples and fixed with studs, couplers m the aforementioned combustion chamber is laterally limited by water-cooling sections of the heat exchanger, and front to rear by fire-resistant thermal insulation, while the boiler is equipped with an igniter mounted on the front panel, and the mentioned main burner manifold with nozzles is mounted on the said removable front panel, on which the above mentioned is also made a viewing window for observing the operation of the ignition and main burners and ignition of the ignition burner, while a smoke collector is installed on top of the said heat exchanger a lecturer made in the form of a welded box construction with the mentioned pipe for connecting to a chimney, the boiler being equipped with safety automatics with a gas burner device containing a draft sensor installed on the said smoke collector, configured to turn off the boiler in the absence of draft in the chimney, a flame sensor, mounted on the said front panel and made in the form of a thermocouple, an indicator of the temperature and pressure of the coolant installed on the said instrument panel, the unit without a safety and control unit, tightly screwed onto the threaded end of the said collector of the main burners of the gas burner device, while a handle for setting the temperature of the coolant is mounted on the housing of the said safety and control unit, the safety and control unit comprising a safety valve, a gas pressure regulator, a coolant temperature regulator and a device for regulating the power of said ignition burner, wherein said safety and control unit is connected to a draft sensor , a flame sensor with an indicator of the temperature and pressure of the coolant, and the aforementioned safety valve of the safety unit and control its input is connected to the gas supply network, in which there is a gas valve for gas supply to the safety automatics with a gas burner, and the output channel of the safety and control unit is connected to the collector main burners of a gas burner device, and the safety automatics with a gas burner device are configured to automatically control the water temperature at the course of the boiler, the gas supply stops when the flame of the pilot burner goes out, there is no draft and the network pressure drops below the minimum, and the gas pressure regulator is configured to maintain a constant gas pressure while passing the gas pressure regulator and maintain a constant gas pressure P _out 900 ± 150 Pa in the output channel connected to the collector of the main burners of the gas burner device, when the pressure of the coolant in the heating system is higher than the permissible value. 2. A cast-iron gas-fired heating boiler according to claim 1, characterized in that it is equipped with a draft stabilizer made in the form of a slit with a damper located inside the smoke collector, and the draft stabilizer is capable of equalizing the air pressure in the suction zone into the ejector of the aforementioned main burners and near the exit of the gas-air mixture from the slot grooves with the open location of the main burners, providing stable combustion of the gas-air mixture with constant vacuum in the mentioned furnace least without adjustment and with the possibility of eliminating the blowing of the aforementioned ignition burner during a short-term rollover of the draft in the chimney. 3. The heating boiler, cast iron gas according to claim 1, characterized in that it is equipped with a distribution grid made with the possibility of regulating the amount of air supplied to the combustion chamber. 4. The heating boiler, cast iron gas according to claim 1, characterized in that it is equipped with a safety valve installed at the top of the water jacket and made with the possibility of actuation with increasing pressure in the heating system 3 ± 0.1 kgf / cm ² . 5. The heating steel gas boiler for heating according to claim 1, characterized in that said safety valve of the safety and control unit is in the form of an electromagnetic valve connected by an electric circuit to a thermocouple installed in the pilot burner unit on the panel of the gas burner device and with a draft sensor, and made with the possibility of connecting to the safety and control unit through an electric circuit safety sensors, including a temperature limit sensor, and the possibility of their operation from the EMF of the aforementioned thermocouples.