If just a few decades ago it was believed that there was no worthy, competitive replacement for European heating equipment, today the domestic manufacturer is gradually regaining its occupied positions. Hephaestus gas boilers convincingly prove that water heating units manufactured at Russian factories are no worse than their foreign counterparts.

Types of gas boilers from Gefest

Gefest equipment meets all the requirements for heating equipment:

• Reliability - uninterrupted operation is ensured by Italian gas automatics.
• Simplicity of design- since the number of additional components is reduced to a minimum, breakdowns are practically excluded.
• Easy to operate and maintain- all the necessary components can be easily purchased at the nearest heating equipment store.

To heat your home, you can choose the following equipment:

• Mounted boilers- save space, in most cases have two circuits and are dependent on the availability of electricity.
• Floor-standing boilers- the most productive heating equipment from Hephaestus, the main purpose of which is to heat the coolant. The DHW circuit is either provided as standard or manufactured additionally using a built-in or remote indirect heating boiler.

All Hephaestus boilers, regardless of configuration, are equipped with sensitive Italian automation, which continues to operate even when the gas pressure drops to 4 mBar.

Mounted boilers

The company focuses on the production of powerful floor-standing units, so wall-hung boilers are presented in only a few modifications. Among them are:

Installation of the Hephaestus mounted boiler is carried out using anchor bolts included in the package. For connection, outlets are provided for two heating circuits (central and “warm floors”) and hot water supply.

Floor equipment Hephaestus

Floor-standing units (compared to wall-mounted boilers), although they do not have most of the functionality, are distinguished by high performance and reliability. The following modifications are popular:

The technical characteristics of the Hephaestus floor-standing boiler imply connection to a classic chimney. Traditionally, an open combustion chamber and an atmospheric burner are used. The Hephaestus household gas floor-mounted flow-type boiler can be used exclusively for domestic hot water needs.

Operational Features

As already noted, boiler maintenance does not require a large investment of money and effort. It is carried out quickly due to the simplicity of the design and free access to the nodes. Service may be required in the following cases:

Chimneyless boilers are equipped with reverse draft sensors that prevent spontaneous flame extinguishing, and other monitoring equipment is also used.

A drop in gas pressure or a decrease in the volume of coolant can cause the automation to trigger and send an emergency stop signal. The boiler's solenoid valve shuts off the gas supply and thus prevents the accumulation of explosive substances in the room.

The service life of boilers largely depends on the installed hydraulic group of the boiler. Softening the water and removing large particles and calcium deposits protects the heat exchanger from overheating and extends its service life.

Why does the Hephaestus cauldron go out?

Judging by the reviews, one of the most common problems among owners of Hephaestus boilers remains a malfunction due to which the flame goes out. What could be causing the fading?

• Violation of coaxial chimney installation technology- the consequence of non-compliance with the requirements is an increased volume of flue gases accumulating in the chimney, which leads to spontaneous attenuation as a result of the operation of the automation.
• Wind - boilers with a closed combustion chamber cannot go out even from a strong gust of wind, since the design includes a gas reverse draft valve. For heat generators with an open combustion chamber, such a sensor is not provided (can be purchased and installed separately).
• Violation of operating conditions- if the pilot light goes out, the reason is not always a malfunction of the automation; there is probably a problem with power surges or gas supply. For volatile models, it is recommended to install a UPS and a pressure stabilizer.

Hephaestus boilers are easy to repair and have interchangeable components, which are almost always available. The cost of the station is 2-3 times cheaper than that of German or Czech analogues, which makes the stations the most attractive equipment of the budget series.

Heating private houses using solid fuel does not lose its relevance. It does not require large expenses for equipment and fuel, allowing you to maintain heat in the house even far from gas mains. The most affordable are classic hot water boilers.

One of the domestic manufacturers supplying heating equipment is the Novosibirsk Metalworking Company. Over 20 years of work, its highly qualified specialists have developed a wide range of solid fuel boilers.

Water heating boilers Hephaestus

NMK products are manufactured using modern equipment from high-quality materials. It includes heating equipment and metal products, in particular, various furnaces and boilers that differ in design, purpose, and cost.

The Siberia series of hot water boilers includes the Hephaestus model range, designed for heating houses up to 300 m2 with an autonomous heating system with natural or forced circulation.

These steel solid fuel units are in no way inferior to their foreign counterparts in performance and quality. In addition, the boilers have an attractive modern design. The spacious firebox allows for both front and top loading.

Water from the return flow enters the pipe at the bottom and circulates in the water jacket and through the pipes, and then exits into the upper pipe. Inside the body there is a firebox in which fuel burns, heating the walls, lid and bottom, from which thermal energy is transferred to the water.

The air flow into the combustion zone is adjusted manually, or you can additionally purchase a draft regulator. The kit includes a heating element that can be used to heat water in the heating system simultaneously with fuel combustion or separately.

Design features make the boilers easy to use and economical. In addition to the water jacket, there are heat exchanger systems at the bottom and at the outlet, in the zone of maximum temperature of heated gases.

A basalt fiber jacket under a layer of polymer-coated cladding provides maximum thermal insulation, which increases efficiency. Coal, brown coal or firewood can be used as fuel. The burning time is from 6 to 8 hours.

Such an inexpensive solid fuel boiler of the simplest design with a minimal set of automation has positive reviews and allows you to successfully heat a small, high-quality insulated house. The manufacturer provides a warranty of 36 months, the stated service life is 10 years.

How to choose a boiler for your home

Having decided to buy a solid fuel boiler, you need to decide on the required power of the unit. If it is insufficient, it will not be possible to maintain a comfortable temperature in cold weather. If the power is too high, the heat generation will be excessive, the boiler may overheat and even fail.

For efficient use of fuel, the heat generated by the boiler must correspond to the heat loss. Heat loss occurs through windows, doors, roofing, walls, floors, and ventilation systems.

Consequently, this indicator depends on the thermal conductivity of the materials from which they are made. In addition, the temperature outside is of great importance. The lower it is, the more the room cools down.

For each material there is a certain indicator of heat transfer resistance. The higher it is, the better the material retains heat. These indicators can be found in construction reference books. The calculation is made based on weather data.

Select the coldest week of the year in this region and calculate the average temperature. This will allow you to select a boiler power that will provide warmth in the house even at minimum temperatures. Based on the initial data, heat loss is calculated for each surface in the house.

Advice! The required boiler power must be calculated by a competent heating engineer. But you can calculate it approximately knowing that with a ceiling height of 2.7 m per 10 m2 there should be 1 kW.

To use fuel more economically, it is important to ensure high-quality thermal insulation at home. To reduce heat loss, it is necessary to insulate the walls, roof and floor, provide waterproofing, and install high-quality windows.

Installation and connection of the boiler

• Since electrical equipment is used, the boiler must be grounded.
• The coolant in the heating system can be either purified water or antifreeze (not containing ethylene glycol). The water undergoes special treatment to prevent the appearance of scale.
• The floor base must be prepared taking into account the weight of the boiler. To protect floor coverings made of flammable materials, it is necessary to cover an area of ​​the floor within a radius of at least 50 cm around the boiler with a protective steel sheet with an asbestos lining. If the subfloor is not stone, it is recommended to install a quarter-brick brick deck.
• The distances from the walls must be 500 mm, to the ceiling - 1200 mm, from the door side - 1250 mm.
• A safety valve must be installed at the boiler outlet.
• The heating system must provide for complete removal of air, as well as the possibility of completely draining the coolant.
• Thermally insulated stainless steel pipes are recommended for the chimney installation. A brick chimney can be used.
• In forced circulation systems, the pump is placed in parallel in case of power failure.
• At the top point of the system there is an expansion tank (for an open system) or a safety group consisting of a pressure gauge, safety valve and air vent (for a closed system).

Operating rules

To light the boiler, use paper, wood chips, and dry wood. Place them on the grate, set them on fire and let them burn. After this, you can cover the main fuel with a layer of 5-6 cm, and after 20 minutes add more. It is necessary to maintain a layer thickness of about 15 cm.

When the water in the system warms up to the desired level, you can reduce the air supply by closing the damper on the ash pan door. In order for the boiler to burn longer at night, the grate must be cleaned, ash and slag removed, after which the fuel is ignited and the draft is reduced by closing the damper.

Using a heating element will not allow the coolant temperature to drop to a critical level. The ash pan should be cleaned regularly throughout the day, which will help maintain the draft necessary for combustion.

Advice! While the boiler is operating, its surfaces may become hot. Be careful when adding fuel and protect your hands when opening and closing the loading door.

• Do not allow water to boil in the system. Its temperature should not exceed 85 °C at the boiler outlet.
• If a knock is heard in the system, it is necessary to urgently stop the boiler, for which all the coal is removed from the firebox. When the water in the system has cooled to 60 °C, you need to restore its quantity, after which you can light the boiler again.
• During frosts, if the heating system is not used, the water must be drained.

Hephaestus solid fuel boilers, produced in Novosibirsk, with the traditional method of burning fuel, have a low price and are available to the general population. They are quite reliable, economical and have an attractive appearance, as evidenced by consumer reviews. They can be used in water heating systems with natural or forced circulation.

for working on hard and brown coal
capacity 2.5 MW

Water heating boiler Hephaestus-2.5-95TLPH (KVm-2.5KB) - a water heating boiler with an operating pressure of up to 0.6 MPa is designed to produce hot water with a nominal temperature at the outlet of the boiler of 95 ° C, used in centralized heat supply systems for needs heating, ventilation and hot water supply of industrial and domestic facilities, as well as for technological purposes of enterprises in various industries.

Specifications

No.	Indicator name	Meaning
1	Layout drawing number	23.8009.032
2	Boiler type	Water heating
3	Type of design fuel	1 - Coal; 2 - Brown coal
4	Heating capacity, Gcal/h	2.15
5	Heating capacity, MW	2.5
6	Operating (excess) coolant pressure at the outlet, MPa (kgf/cm2)	0,6(6,0)
7	Water temperature graph, °C	70-95 (115 - only after agreement with BiKZ)
8	Estimated efficiency (fuel No. 1), %	82
9	Estimated fuel consumption (fuel No. 1), kg/h (m 3 / h - for gas and liquid fuel)	470
10	Estimated fuel consumption (fuel No. 2), kg/h (m 3 /h - for gas and liquid fuel)	685
13	Dimensions of transportable unit, LxBxH, mm	4335x2200x2655
14	Layout dimensions, LxBxH, mm	7120x3610x3310
15	Weight of the boiler without firebox (transportable boiler block), kg	4880
16	Weight of the boiler without firebox (in the scope of factory delivery), kg	13110(12630)
17	Type of delivery	Assembled
18	Basic kit assembled	Boiler block with casing and insulation Firebox TLPH-1.1/3.5 Fan VDN-6.3-1500
19	Price assembled	2807.2

Design and principle of operation of the boiler Hephaestus-2.5-95TLPH (KVm-2.5KB)

The Hephaestus-2.5-95TLPH (KVm-2.5KB) boiler is a structure whose main elements are a boiler block and a mechanical firebox. The boilers operate with a balanced draft, which is provided by a VDN blower fan, a KZG-280-AK54-02 fan and a smoke exhauster.

The Hephaestus-2.5-95TLPH (KVm-2.5KB) boiler block, assembled on a support frame, is a gas-tight welded structure consisting of a pipe system with a convective heating surface, and has a frame with thermal insulation and removable decorative lining.

The combustion chamber of the Hephaestus-2.5-95TLPH (KVm-2.5KB) boiler (except for the hearth) is completely shielded with gas-tight panels welded from pipes with a diameter of 51x2.5mm with a pitch of 80mm and spacers (fins).

The convective heating surface (CHS) consists of packages that can be easily dismantled if necessary. At the bottom of the convective block there is an ash hopper with a manhole for cleaning ash deposits and inspecting the convective bundle pipes.

Gases are removed through a flue in the upper part of the rear wall of the boiler.

To control the operation of the Hephaestus-2.5-95TLPH (KVm-2.5KB) boiler, ensure design operating modes and safe operating conditions, the boiler is equipped with the necessary safety and shut-off valves, instrumentation and safety devices, which are installed according to the valve location diagram.

Shut-off valves serve to drain water from the Hephaestus-2.5-95TLPH (KVm-2.5KB) boiler into the heating network, supply return water to the boiler, drain water from the boiler, for periodic purging and sludge removal. Control and measuring instruments (thermometers and pressure gauges) provide measurement of pressure and temperature at the inlet and outlet of water from the boiler. Safety devices ensure that the fuel supply is turned off when the temperature and water pressure limits in the boiler are reached. Tubes with valves DN15 are used to remove air from the boiler.

The Hephaestus-2.5-95TLPH (KVm-2.5KB) boiler block is installed on the furnace frame (TLPH). The firebox is installed before the unit is installed.

A mechanical firebox with a direct-running belt grate (TLPH) consists of a coal box, a frame with a drive, drive and driven shafts that move the belt grate, which consists of three types of grates: outer, driving and driven. The fuel is supplied by a coal feed conveyor and flows by gravity through the coal box onto the grate, where it is burned in a layer of 100-200 mm. A certain thickness of the fuel layer on the grate is maintained using a layer regulator in the coal box and is done manually using flywheels through worm gears. Under the grate there are chambers (zones) where the necessary air for combustion is supplied. The air supply must be continuous (otherwise the layer will sinter and the grates will burn out) and is regulated by the opening value of the air dampers. Air under the grate is supplied from the VDN fan. Air for secondary blast is supplied to the upper front and lower rear parts of the furnace from the KZG-280-AK54-02 fan.

Removal of slag from the grate occurs due to the movement of the grate, which is driven by a drive. Removal of slag from the slag channel is carried out by a slag and ash removal conveyor.

The firebox has its own frame, independent of the boiler. The firebox frame consists of two cheeks connected to each other by transverse beams. The frame is mounted on shoes and has free expansion in the longitudinal and transverse (from the drive) directions. To lift the combustion unit using lifting equipment, there are load brackets that are cut off after installation.

Boiler block Hephaestus-2.5-95TLPH (KWm-2.5KB), firebox, fans are supplied in separate cargo units. Automation kit, components are supplied packed in a box.

At the Customer's request (under an additional agreement), the boilers are equipped with auxiliary equipment for the boiler room (smoke exhauster, pump group, ash collector or cyclone, coal feed conveyor and slag removal line).

Transportation of boilers can be carried out by all types of transport.

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Gefest-profi U boiler series- these are boilers for universal use, long burning. Designed to burn all types of solid fuels as efficiently as possible (which is important even with high humidity). Combustion is carried out thanks to direct pyrolysis, when air is distributed over the afterburning zones. The unique convective design ensures efficiency (90-93%) and, importantly, low flue gas temperatures (70-120) °C. 20% power reserve. The large loading chamber allows you to load the boiler with fuel 1-2 times within 24 hours. There is no condensation of equipment at low coolant temperatures.

Advantages: Gefest profi boilers (Gefest profi) U series

1. Economical. Universal Boilers "Gefest-profi"» have an effective convective system, the system is unique and was developed using software in which engines for BOEING aircraft and F1 race cars are designed (efficiency 90-95%) and are today the most economical, to generate 1 Gcal of heat it is necessary to burn 1 cubic meter . hardwoods with 30% humidity.

2.Ease of use, allows you to rarely load fuel. Loading chambers of increased volume + economical combustion = one or two loads per day (wood), once every two days when working on coal. The better the quality of the fuel used, the less often the loading process occurs.

3. Easy maintenance. There is no “human factor”, there is no need to constantly regulate the combustion process. The modes on the microprocessor control unit are set once and can be easily changed only when the type of fuel changes.

When operating, the mode uses a “smart” combustion algorithm. Almost 100% combustion of fuel, rare cleaning of the boiler, when working on high-quality fuel, can be done once a season.

Reliable and well-thought-out design of the boiler, there are no hard-to-reach areas that impede cleaning.

There is no need to use a chimney with a pipe thickness greater than 1.0 mm, made of heat-resistant, corrosion-resistant steel. (The temperature of the flue gases is no more than 90 degrees Celsius.

Correct distribution of coolant, absence of dew point - boilers do not cry. Quick entry into operating mode, the maximum is reached 30 minutes after startup. The water output reaches 90 degrees. Celsius.

4. Can, if necessary, operate efficiently on low quality fuel. The boiler is universal “MULTI” (all types of solid fuel of various qualities).

5. Reliability and safety. Heat is removed from all surfaces, the economizer and the combustion chamber, which allows the steel parts not to overheat. High design life of 15-25 years.

Boiler calculation based on maximum load. According to the standards for calculating the strength of vessels and apparatus.

All necessary security systems are included (valves and sound alarms.

Operability during a power outage (if a heating system with natural circulation is provided), the boilers create the required operating pressure and continue to operate.

Technical characteristics of Gefest-profi boilers 15-250 kW.

Options
	Boilers "Gefest-profi" 15-250 kW.
Thermal power W
Water pressure MPa: nom. - work.
Electricity consumption
Required traction force PA
Dimokhod height, m
Joining the system heating D int.
Chimney dimensions
The diameter of the flue pipes is mm.
Length
Width
Height
Weight

Technical characteristics of Gefest-profi boilers 350-1000 kW

Options
	Boilers "Gefest-profi" 350-1000 kW.
Thermal power W
Water pressure*, MPa: nom. - work.
Max electricity consumption, W
Required traction force PA
Dimokhod height, m, no less
Connection to heating system D int.
Chimney dimensions
The diameter of the flue pipes is mm.
Length
Width
Height
Weight

Package Included:

• boiler;
• fan;
• microprocessor control unit;
• safety valve;
• bimetallic thermometer;
• drain tap; flanges (at customer's request);
• packaging (at customer's request).
• operational documentation:

— Installation and operation manual, which contains requirements and recommendations for installation, adjustment and operation of “Gefest-profi” boilers

— Operational documents for components in accordance with the terms of delivery of the supplying factories.

ATTENTION! The package of boilers of the Gefest-profi P series (for pellet burner) additionally includes: A stainless steel bumper. Air supply duct plug.

Main elements of “Gefest-profi” type boilers:

• 1-combustion chamber (furnace)
• 2-ash pan hatch;
• 3-ash pan;
• 4-water-filled grates;
• 5-coolant;
• 6-hatch screw;
• 7- heat-insulating material;
• 8-fill hatch;
• 9- microprocessor control unit;
• 10-convective part;
• 11-fan;
• 12-secondary air distributor;
• 13-drain valve;
• 14-return pipe;
• 15-bottom hatches for cleaning chimneys;
• 16-smoke channel;
• 17-manual traction control handle;
• 18-upper hatch for cleaning chimneys;
• 19 — supply pipe nozzle;
• 20 - analog thermometer.

Boilers of the “Gefest-profi” type equipped with an inflatable fan and a microprocessor control unit, which allow you to control the boiler power and coolant speed. And they are representatives of a new generation of boilers with a patented convection system, with smoke channels located at different angles of attack.

The design of the boiler allows the use of any type of fuel: Staub, coal, peat, wood. The use of a distributed air supply system to the combustion zone allows you to effectively control the combustion process of various types of fuel, and also allows you to control the fuel combustion process under various boiler operating modes.

The boiler is equipped with a heat exchanger of certified steel 4-6 mm thick, a welded structure, closed from the inside with a water jacket, reinforced with pins and surrounded by sheets of steel. The boiler heat exchanger is a multi-stage design of smoke channels.

The boiler firebox is a filling chamber equipped with steel water-filled grates. There is an ash pan under the heat exchanger. The placement of filling doors, scoop doors, and the ash pan door allows quick access to the firebox for cleaning or ignition.

Wide, angled filling doors make loading fuel easier. Additionally, there are cleaning doors that allow cleaning the boiler smoke channels.

The air necessary for the correct combustion process is supplied by a fan thanks to a system of inflatable channels located directly in the area of ​​​​the loaded fuel.

The microprocessor controller constantly measures the temperature of the water in the boiler and sets the fan pressure accordingly, regulating the amount of air required for the combustion process.

In boilers "Gefest-profi" The regulator controls the boiler temperature based on the PID algorithm. (PID = VO means “proportional = proportional”, “integral = integral”, “derivative = differential”. These three parameters describe the simplest elements of a PID controller. Each of these elements performs its own task and has its own specific effect on the functioning of the system. In In a typical PID controller, these elements operate with a combination of both input control parameters and feedback signals from the controlled device (the control object, hereinafter simply the device). The outputs of these elements add up and form a control signal for the device.)

The microprocessor ensures constant operation of the boiler at the specified temperature of 85 ° C. The maximum water temperature in the boiler is 90 ° C. If this temperature is exceeded, the regulator turns off the air blowing.

Hot gases pass through a steel heat exchanger where, having given off heat, they are cooled. Cooled gases exit the boiler and are connected to the smoke pipe through a chimney. A draft control valve is installed in the smoke pipe, designed to reduce the chimney draft if necessary. The space between the boiler heat exchanger and its body is filled with non-flammable heat-insulating material - mineral wool 40-45 mm thick. The temperature of the water in the boiler can be monitored using a thermometer installed on the boiler.

Gefest boiler connection diagram

• 1. Boiler safety group,
• 3. circulation pump,
• 2. expansion tank,
• 4. taps.

A simple scheme, but it significantly improves the operation of the boiler. It is equipped with a mixing circuit and taps, with the help of which the amount of coolant entering the feeding circuit is regulated. This scheme eliminates the possibility of condensation forming on the walls of the boiler. The advantage of this connection scheme is that the temperature of the coolant in the heating devices can be significantly lower than the temperature of the coolant in the boiler.

Gefest boiler maintenance

Repair and maintenance of the heating system is carried out by the owner of the property or a service company. The boiler requires periodic cleaning and storage. This is important for proper operation and efficient combustion of fuel. Cleaning the boiler may only begin after it has completely stopped (see section 6.4. Stopping the boiler). 8.1. Cleaning the surface of the furnace walls and secondary air nozzles is carried out through the hatch. 8.2. Cleaning the surface of the grate pipes is carried out through the slag removal hatch (screw hatch). 8.3. Cleaning the walls of the heat exchanger and chimney is carried out through the upper hatches for cleaning the channels. 8.4. Slag removal, after cleaning the walls of the heat exchanger, is carried out through the lower side hatches. 25 8.5. It is also necessary to periodically clean the fan and measuring and control devices to prevent dust from accumulating on these boiler elements. After the end of the heating season, there is no need to drain the water from the boiler, but the firebox and smoke channels should be thoroughly cleaned. In the future, all work related to checking, cleaning and repairing the gas duct must be carried out only by the production and operational organization. To extend the life of the boiler, it is recommended to keep the boiler open during downtime to allow air to enter the boiler, and during storage it is recommended to dry it.

Gas steel boiler Hephaestus

Steel gas boilers Hephaestus Taganrog are designed for heating and hot water supply to individual apartments of one-story and multi-story buildings, individual residential buildings and buildings.

The devices operate in central heating systems with an open expansion tank with natural or forced water circulation, with a maximum boiler outlet temperature of up to 80C.

General characteristics of gas boilers Hephaestus

Operating water pressure in the boiler, MPa (no more) - 0.1

Water temperature at the boiler outlet, C - 40-80

Temperature of combustion products, C, not less than - 110

Nominal gas pressure, kPa - 1.3

Gas connecting pressure, kPa - 0.6-3.0

Warranty period, year - 3

Thickness of the outer wall of the building through which the air duct and chimney pipes pass, mm 270-1000

Design and components of the Hephaestus gas boiler

Fig.1. Construction of a Hephaestus gas steel boiler with a coaxial path

1. Burner, 2. Automation unit, 3. Thermal bulb, 4. Thermocouple, 5. Igniter, 6. Burner nozzle, 7. Burner panel, 8. Temperature indicator, 9. Chimney pipe, 10. Air duct pipe, 11. Window, 13. Piezo ignition, 14. Temperature regulator, 15. Terminal, 17. Gas supply, 18. Heating water inlet, 19. Heating water outlet, 20. Water heater

Fig.2. Construction of a steel gas boiler Hephaestus with a separate path

1. Burner, 2. Automation unit, 3. Thermal bulb, 4. Thermocouple, 5. Igniter, 6. Burner nozzle, 7. Panel, 8. Temperature indicator, 9. Chimney, 10. Air duct, 11. Window, 13. Piezo ignition , 14. Temperature regulator, 16. Gas supply, 17. Heating water inlet, 18. Heating water outlet, 19. Water heater

The boiler has a closed combustion chamber, i.e. Combustion air is taken from outside the room.

For air supply and removal of combustion products, the boiler is manufactured with a separate or coaxial smoke ventilation duct.

With a coaxial output, the device (Fig. 1) is equipped with its own smoke ventilation duct, which is installed through a hole in the outer wall of the building and the smoke removal system does not require a chimney.

With a separate outlet, the device (Fig. 2) is equipped with an air duct section. A windproof terminal device is installed outside at the end of the smoke ventilation duct or air duct.

The boiler is a welded water-tube structure that forms a water jacket along the entire perimeter, bordering the combustion chamber. For hot water supply, a coil is placed in the upper part of the water jacket.

The combustion chamber has an external opening for installing a gas burner device. The panel of the gas burner device has a window for monitoring the combustion process.

The gas burner device consists of burner 1 and automation unit 2.

The automation of the Hephaestus Taganrog boiler ensures the supply of gas to the ignition and main burners, maintains the temperature in the heated room within specified limits by switching the main burner to the “low flame” mode and, when the set temperature is reached, ensures its shutdown.

Regulation and maintenance of the set temperature is ensured by a thermostat, which is controlled by turning a knob with divisions installed on the front panel of the burner. The temperature regulator setting limit is 40-80 °C.

The boiler is equipped with a gas burner device with thermoelectric automatic regulation and safety CV-30 (Germany) or EUROSIT (Italy).

The diagram is shown in Fig. 3. The automation has a gas pressure stabilizer in front of the main heater, a “small flame” mode and piezo ignition.

Fig.3. Schematic diagram of automation

1. Gas valve, 2. Control knob, 3. Minimum gas flow screw, 4. Thermal bulb, 5. Thermocouple, 6. Main burner, 7. Pilot burner, 8. Valve outlet, 9. Bypass valve, 10. Modeling thermostat , 11. Maximum gas flow screw, 12. Gas flow adjustment screw to the pilot burner, 13. Solenoid valve, 14. Valve inlet, 15. Piezo ignition button

The automation of the Hephaestus Taganrog boiler consists of an electromagnetic valve, a thermocouple, a thermostatic valve, a pressure bellows, a capillary tube, and a thermal cylinder.

When the gas supply from the network is stopped, the pilot burner goes out instantly, the solenoid valve closes, blocking the access of gas to the gas burner device. When the gas supply is restored, ignition must be done again.

Security automation provides:

– gas supply to the main burner only if there is a flame on the ignition burner for a period of no more than 60 seconds;

– stopping the gas supply when the pilot burner goes out within 5-60 seconds.

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