Automation for gas boilers aogv 23.2 1. Heating systems for country and country houses

PURPOSE

The device is designed for heat supply of residential premises and buildings for communal and domestic purposes, equipped with water heating systems with a water column height in the water circuit of no more than 6.5 m.
The device is designed for continuous operation on natural gas in accordance with GOST 5542-87.
The device is manufactured in climatic version UHL, category 4.2 in accordance with GOST 15150-69.

Specifications	Safety devices
Special design of the heat exchanger, the use of quality material: a) durability; b) high efficiency; c) reliability. Stainless steel burner Optimal combustion chamber Temperature control Ease of installation and maintenance Polymer staining Reliability Repairability	Thermostat to prevent overheating of the heat exchanger Gas supply shutdown in case of extinction (flame supervision) Shutdown in the absence of traction Stabilizer for wind gusts Low temperature boiler cladding

SPECIFICATIONS

Parameter or size name	The magnitude
Parameter or size name	AOGV 11.6-1	AOGV 17.4-1	AOGV 23.2-1
1. Fuel	Natural gas
2. Nominal pressure of natural gas in front of the automation unit, Pa (mm.w.st.)	1274 (130)
Natural gas pressure range, mm.w.st.	65…180* 1
3. The volumetric content of carbon monoxide in dry undiluted combustion products of natural gas,% no more	0,05
4. Coefficient of efficiency of the apparatus,% not less	89
5. Heat carrier	water
6. Heat carrier parameters, no more:	0,165
- absolute pressure, MPa;	0,165
- maximum temperature, ºС	95
- carbonate hardness, mg-eq / kg, no more	0,7
- content of suspended solids	absent
7. Rated thermal power automatic burner, kW (kcal / h)	11,6 (10000)	17,4 (15000)	23,2 (20000)
8. Size of the gas inlet connection:
- nominal bore DN, mm	15	20	20
	G 1/2 -B	G 3/4 -B	G 3/4 -B
9. Safety automation parameters
- gas supply shutdown time for pilot and main burners, sec
- when the gas supply is cut off or there is no flame on the ignition burner, no more	60
- in the absence of draft in the chimney, no more, no less	10
10. Vacuum in the chimney behind the device, Pa	2.94 to 29.4
mm. water Art.	0.3 to 3.0
11. Nominal bore of water connecting pipes DN, mm	40	50	50
- thread according to GOST 6357 - 81, inch	G 1 1/2 -B	G 2 -B	G 2 -B
12. Weight of the apparatus, kg, no more	45	50	55
13. Heated area, m 2, no more	90	140	190
14.Capacity of the heat exchanger tank, liter	39,7	37,7	35
15. Maximum temperature of combustion products discharged into the chimney, ° С (gas pressure 180 mm.w.st.)	130	160	210
* 1 NOTE. The device is protected against emergency supply of inlet gas pressure up to 500 mm. water Art. gas valve design.

DEVICE AND PRINCIPLE OF OPERATION.

The device consists of the following units and parts: a tank - a heat exchanger, a main burner, an ignition burner unit with a thermocouple and an ignition electrode installed in it, a combined gas valve (multifunctional regulator), a weight stabilizer, and lining parts.

In the upper part of the tank - heat exchanger, a thermostat sensor is installed, connected by a capillary tube to the actuator of the thermostatic valve (system "bellows - thermo bulb"), and a thermometer sensor

The design feature of the 630 EUROSIT combination valve is the presence of a device for stabilizing the outlet gas pressure, as well as the combination of valve control in one handle with the designation of positions by the corresponding symbols and numbers on its end and an indicator on the valve cover. The dependence of the heated water temperature on the position of the control handle scale is shown below:

The operating principle of the temperature controller is based on the expansion of the liquid when heated. The working fluid, being heated in the sensor (thermal bulb) from the water in the tank - heat exchanger, heated by the combustion of natural gas, expands and flows through the capillary tube into the bellows, converting the volumetric expansion into a linear movement of the mechanism that drives the system of two valves (instantaneous and metering ). The design of the mechanism provides protection against thermal overload, which protects the system "bellows - thermal bulb" from damage and depressurization.

When the required water temperature in the device is set with the control knob to increase, the instant (click) valve first opens, then the metering valve.
When the water temperature in the device reaches the set value, the dosing valve is smoothly closed, transferring the main burner to the "low gas" mode.
When the temperature rises above the set point, an instant (click) valve is triggered, completely shutting off the gas to the main burner.
In the absence of draft in the chimney, the exhaust gases from the furnace heat the draft sensor, the sensor is triggered by opening the normally closed contacts of the thermocouple circuit. The solenoid (inlet) valve closes and shuts off gas access to the main and pilot burners. The thrust sensor is designed to be triggered during the absence of thrust for at least 10 seconds.
When the gas supply from the network is interrupted, the ignition burner instantly goes out, the thermocouple cools down, the solenoid valve closes, blocking the access of gas to the main and pilot burners. When the gas supply is resumed, the passage through the apparatus is completely closed.
When the gas pressure in the network drops below 0.65 kPa, the gas pressure on the pilot burner will also drop, the emf of the thermocouple will drop to a value insufficient to hold the valve. The solenoid valve will close and shut off gas access to the burners.

PLACEMENT AND INSTALLATION

The placement and installation of the apparatus, as well as the supply of gas to it, is carried out by a specialized construction and installation organization according to the project agreed with the operating enterprise (trust) of the gas economy.

The room where the device is installed must have free air access from the outside and a ventilation hood near the ceiling.

The temperature of the room in which the device is installed should not be lower than +5 ºС.

The choice of a place for the installation of the device should be made in accordance with the instructions of safety measures set forth in section 7 of this passport.

The device is installed against non-combustible walls at a distance of at least 10 cm from the wall.

When installing the device near a fire-resistant wall, its surface must be insulated with a steel sheet over an asbestos sheet with a thickness of at least 3 mm, protruding 10 cm beyond the dimensions of the case. There must be a passageway at least 1 meter wide in front of the apparatus.
When installing the device on a combustible floor, the floor must be insulated with a steel sheet over an asbestos sheet with a thickness of at least 3 mm. The insulation should protrude 10 cm beyond the dimensions of the case.

Before starting the installation, it is necessary to de-preserve the device, check the correctness of its assembly in accordance with Fig. 1 and fig. 8 of this passport, and make sure that all parts and assembly units are securely and completely secured.

Connect the device to the chimney, gas pipeline and pipes of the heating system. The connecting pipes of the pipelines must be precisely matched to the location of the inlet fittings of the apparatus. The connection should not be accompanied by mutual interference of pipes and unit assemblies.

SAFETY PRECAUTIONS

Persons who have studied this passport are allowed to service the device.

Installation and operation of devices must comply with the requirements of the "Rules for the construction and safety of operation of hot water boilers, water heaters and steam boilers with overpressure", as well as the requirements of the "Safety Rules for Gas Distribution and Gas Consumption Systems. PB 12 - 529 ", approved by the Gosgortekhnadzor of Russia.

The operation of the apparatus must be carried out in accordance with the "Fire safety rules for residential buildings, hotels, hostels, buildings of administrative institutions and individual garages PPB - 01 - 03".

The operation of the device is allowed only with operable safety and temperature control automatics.

Gas safety equipment should provide:

Reducing the gas supply when the water temperature reaches heating system set value.
Turning off the gas supply to the main burner when the preset heating temperature is exceeded.
Turning off the gas supply to the device in the following cases:
- when the gas supply to the apparatus is interrupted (within a time period not exceeding 60 seconds);
- in the absence of draft vacuum or in the boiler furnace (for at least 10 seconds and not more than 60 seconds);
- when the pilot burner flame goes out (within a time period not exceeding 60 sec.).

When using the device, the temperature hot water should not exceed 95 ° C.

It is prohibited:

operate the device with the heating system partially filled with water;
use other liquids instead of water as a heat carrier **;
install shut-off and control valves on the supply line and pipeline connecting the heating system with the expansion tank;
operate the device in the event of a gas leak through the gas pipeline connections;
apply open flame to detect gas leaks;
operate the device in the event of a malfunction of the gas network, chimney or automation;
independently eliminate malfunctions in the operation of the device;
make any design changes to the apparatus, gas pipeline and heating system.

When the device is not working, all gas taps: in front of the burner and on the gas pipeline in front of the device - must be in the closed position (the valve handle is perpendicular to the gas pipeline).

All malfunctions during the operation of the apparatus on gas must be immediately reported to the emergency service of the operating enterprise of the gas economy.

If gas is found in the room, immediately stop supplying it, ventilate all rooms and call the emergency or repair service. Until the malfunction is eliminated, it is forbidden to light matches in the room, smoke, use

** It is allowed to use the household heat carrier "Olga" (manufacturer: ZAO "Plant of organic products") according to the instructions for use. After a period of operation, the coolant must be drained and disposed of.

An autonomous home heating system is becoming one of the most common ways to heat a home.

Among the many options, gas boilers are preferred as the most efficient and economical installations.

The recognized leaders in the production of gas units are European companies, but their products are not always capable of working effectively in Russian conditions.

Domestic manufacturers, having analyzed the experience of foreign colleagues, decided to use a completely different approach to the design and functionality of boilers.

Consider one of the models of the Russian gas boiler - Zhukovsky AOGV 23.

What functions does Zhukovsky have gas boiler AOGV 23

The abbreviation AOGV 23 stands for Gas Heating Apparatus with a Household Power of 23 kW. This is a single-circuit floor-standing unit capable of effectively heating a room up to 200 m2.

Such opportunities are optimal for use in a private house, cottage or other premises. The boiler is designed to perform only one function, which allowed the manufacturer to exclude all unnecessary parts and unused structural elements.

This increased reliability, reduced the number of failures and breakdowns. In addition, a feature of AOGV 23 boilers is energy independence.

In the event of a sudden power outage, the boiler operation will continue as usual, which is important in the conditions of the Russian winter. This feature significantly increases the reliability of the home heating system.

At the same time, the lack of power supply requires a specific location radiator system, since the circulation of the coolant will occur naturally.

Boiler combustion chamber atmospheric type, with air intake directly from the room and natural smoke exhaust using a furnace-type draft.

Household antifreeze is used as a heat carrier, which increases the reliability of the heating system in severe frosts.

Specifications

Consider specifications boiler Zhukovsky AOGV 23:

Advantages and disadvantages of the model

The advantages of Zhukovsky AOGV 23 boilers are:

Reliability, simplicity of design.
Independence from the power supply system.
Simple and intuitive controls.
Designed for use in Russian conditions.
Designed to work in harsh climatic conditions.
The service life is 14 years (and more).
The cost of boilers is much lower than that of European counterparts.

The heat exchanger of the units is made of steel, inferior in thermal conductivity to cast iron.
Appearance boilers are inferior to European models.
The mechanical automation of the boiler is rather weak.
The dimensions and weight of the unit require installation in a separate room.

NOTE!

Most of the shortcomings to one degree or another are inherent in all atmospheric models, therefore they can be attributed to a specific design feature.

Varieties

There are three modifications of boilers Zhukovsky AOGV 23:

Economy... Floor-standing unit with Russian automatics, tubular heat exchanger. There is a temperature sensor.
Station wagon. Installed Italian automatic equipment SIT, modulated burner, coolant overheating sensor.
Comfort. In addition to all the options of the Universal models, the boilers have the possibility of remote control, room thermostat, protection against excess temperature of the coolant.

Boilers of the Comfort modification can be distinguished from other varieties externally - they have a rectangular cross-sectional shape, while the Economy and Universal are round.

Device

The principle of operation of the AOGV 23 boiler is based on heating the coolant using an atmospheric burner... Entering the tubular heat exchanger, the liquid reaches its maximum temperature, after which it is discharged into the heating system.

The movement of the coolant occurs under the influence of the thermal movement of the heated layers upwards, therefore, the placement of all pipelines must be planned with a certain slope. To adjust the temperature to a preset value, a three-way valve is installed, which mixes a certain amount of a colder return flow into the heated coolant.

Natural circulation is unstable and inefficient, which is why many owners install an external circulation pump to stabilize the system.

What kind of premises is best suited for?

AOGV 23 boilers are optimal for use in private houses, public or commercial premises. They require a separate room with the possibility of ventilation, therefore the installation of units in apartments is not recommended.

Also, production workshops with big amount openings and technological hatches that violate the air exchange mode and create drafts. They often blow off the flame, which stops the heating system and creates a danger of gas leaks.

The best option is a separate room in the basement (basement) floor with a window opening with an area of at least 8 m2.

Start-up and operating instructions

The boiler is started up after installation on a flat horizontal surface and connecting all communications:

Gas supply.
Direct and return lines of the heating system.

After installation, the system must be filled with coolant. The fill level is monitored using a signal pipe... The boiler is fired up using a piezo ignition unit or a lighted match (Economy series).

To start the boiler, first ventilate the room for 15 minutes. After that, open the gas cock, turn on the handle to the "igniter on" position and drown it all the way. Wait in this position for 10-15 seconds, then press the piezo ignition button.

When the flame appears on the igniter, wait another 20-30 seconds, then release the handle... The igniter should continue to burn. After that, you can set the required coolant temperature.

During operation, no specific actions are required from the user, except for periodic cleaning from dust and soot.

Once a year, a foreman should be invited to perform maintenance. For all problems, contact the warranty or service workshop.

Owner reviews about the model

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Gas boiler AOGV-23 ZhMZ

Heating gas boilers AOGV-23.2 Station wagon produced by ZhMZ is a floor-standing gas one and two-circuit non-volatile unit equipped with an imported automation unit.

This design allows you to minimize the cost of heating equipment. The device runs on natural or liquefied gas (after replacing the nozzles).

Fig. 1. External view of the Zhukovsky boiler AOGV-23

The presence of the second circuit allows the use of universal boiler units for the simultaneous supply of heat and domestic hot water supply.

Small dimensions, light weight and convenient shape make these boilers an ideal choice for installing autonomous heating systems in small spaces.

Advantages of gas Zhukovsky heating boilers

Heat exchanger

High efficiency of boilers (up to 89%), ensured by the tubular structure of the heat exchanger with built-in turbulators;

High reliability of the heat exchanger tank due to the use of an automatic welding process and seamless seamless pipes;

Stable provision hot water for household needs in a copper flow-through secondary circuit;

Possibility of using the devices in heating systems with natural and forced circulation of the coolant.

Automation

Safety, reliability, simplicity and ease of operation of boilers are ensured by the use of modern imported automation units;

Saving gas consumption due to the automatic modulation of the burner power in units with imported automation;

Convenience of control due to the optimal arrangement of automation units.

Burner

Ecological cleanliness due to the low content of nitrogen and carbon oxides in waste gases;

Stable operation of the device at low gas pressure in the network (up to 550 Pa);

Ease of use due to the easy replacement and cleaning of the burner.

Gas boiler design ZhMZ AOGV-23

Protective outer coating of the boiler with powder white enamel;

Boilers are cylindrical and rectangular, automation is located at the top or bottom;

Equipping boilers with a pointer thermometer and piezo ignition;

Technical characteristics of the gas Zhukovsky boiler AOGV-23

The efficiency of the device efficiency (during continuous operation),%, not less: 88

Gas type - natural / liquefied

Rated thermal power, W (Kcal / h) - 23260 (20,000)

Gas consumption:

Natural, no more - 2.55
- liquefied, no more - 0.87

Chimney vacuum, Pa (mm wc) minimum / maximum - 2.94 (0.3) / 29.4 (3.0)

Ignition time, sec., No more - 60

Carbon monoxide index, vol. %, no more - 0.05

Range of maintaining the water temperature in the heat exchanger, С - 50-90

Burner type - Injection

Tank capacity, l - 59

Outside diameter of the connecting branch pipe of the gas exhaust device, mm - 135 ± 2

Water consumption in hot water supply mode when heated at t = 35 0С l / min., Not less - 7.1

Water pressure in front of the device in the DHW system, kPa (kg / cm2)

Maximum - 588 (0.6)
- minimum - 14.7 (0.15)

Water pressure in the heating system, kPa, no more - 100

Distance:

From the floor to the axis of the gas pipeline inlet, mm - 716 ± 5
- from the floor to the end of the heat exchanger outlet pipe, mm - 1050 ± 5
- from the floor to the axis of the heat exchanger inlet pipe, mm - 292 ± 5
- from the floor to the axis of the inlet pipe of the coil, mm - 587 ± 5
- from the floor to the axis of the coil outlet, mm - 927 ± 5

Overall dimensions, mm: height x width x depth - 1050 ± 5 x 420 ± 5 x 480 ± 5

Weight of the device (without packaging), kg, no more - 60

Maintenance of the gas boiler ZhMZ AOGV-23 Universal

Periodically, but at least once every six months (before the start of the heating season), check the accuracy of the thermostat setting.

Rice. 2. Automation of the gas boiler ZhMZ Universal

1. Gas magnetic valve; 2. Launcher button; 3. Arrow; 4. Adjusting knob; 5. Thermoregulator; 6. Bellows - thermocylinder; 7. Filter, 4. Adjusting knob;

If the thermometer readings differ from the temperature set by the adjusting knob 4 (Fig. 2) by more than ± 5 ° C, it is necessary to adjust:

Set the adjusting knob 4 (Fig. 2) to number 4;

Warm up the coolant in the unit to 50 ° C;

Slowly turn the adjusting knob 4 (Fig. 2) towards decreasing temperature until the gas supply to the main burner stops;

Unscrew the screw securing the adjustment knob and remove it;

Carefully install the adjusting knob by aligning the number 1 on the adjusting knob with the arrow 3 (Fig. 2) and tighten the screw securing the adjusting knob;

Make sure that the setting is correct at the moment the main burner is turned off when the correspondence between the temperature set using the control knob and the actual temperature of the heating medium of the device is achieved.

Malfunctions of the Zhukovsky boiler AOGV-23 and their elimination

1. Pressing the start button fails to ignite the igniter, the flame on the igniter goes out, comes off

Gas valve in front of the device is closed - Open the gas valve.

The hole in the pilot nozzle is blocked - Clean the hole with Ø 0.3 mm wire.

Gas pressure below 635 Pa (65 mm H2O) - Notify the gas utility.

Strong drafts in the room causing the ignitor flame to blow off - Eliminate or reduce drafts.

2. There is no spark between the spark plug electrode and the igniter

Large gap between electrode and igniter - Adjust gap.

Piezo ignition does not work - Replace piezo ignition.

3. When the start button is released (after holding it for at least a minute with the igniter on), the igniter flame goes out

Oxidation of solder on the contacts at the joints of the electromagnet with the contact wire, weak pressing of the pins in the sockets - Unscrew the connector of the contact wire from the gas magnetic valve body, clean the contact with a needle file until it shines (remove the oxide film). Screw the union back into the body. Remove the sockets from the pins, lightly squeeze the sockets with pliers. Place the sockets on the pins. To avoid the destruction of the soldering of the contacts of the electromagnet and the wire of the contact, do not tighten the fitting of the wire when screwing it into the gas magnetic valve body.

Draft sensor microswitch does not work - Replace microswitch.

The thermocouple does not generate EMF, the end of the thermocouple burns out (the value of the EMF of the thermocouple must be at least 20 mV) - Replace the thermocouple.

The pilot flame does not touch the thermocouple - Position (bend) the thermocouple so that the flame washes over the end of the thermocouple (see Figure 3).

The safety thermostat is out of order - Replace the safety thermostat.

4. The flame of the burner and pilot is extinguished. Automatic shutdown of the gas supply during the operation of the gas boiler AOGV-23 ZhMZ. The thrust sensor is triggered

Complete or partial obstruction of the chimney - Clean the chimney.

Strong drafts in the room causing the pilot flame to blow off - Eliminate or reduce drafts.

The pressure has dropped below 635 Pa (65 mm H2O) - Notify the gas utility.

To measure the gas pressure in the network, disconnect the pilot tube from the fitting on the valve body. Connect a measuring device to the nipple.

Turn the adjusting knob, setting it to 50 - 60 ° C. Press the start button all the way, then release it 2 - 3 mm and after 8 - 12 seconds. take readings of the device.

5. The response time of the automatic equipment of the gas Zhukovsky boiler AOGV-23 in terms of thrust is less than 10 sec. in the absence of draft in the chimney. The response time of the automatic thrust is more than 60 sec. in the absence of draft in the chimney.

The draft sensor is not adjusted - Adjust the sensor, for which: unlock, unscrew (or tighten) the adjusting screw by 1-2 mm and re-lock it. Check the response time. Repeat the operation if necessary.

The response time depends on the gap between the adjusting screw and the microswitch button. As the gap increases, the response time increases and vice versa.

6. The main burner does not turn off

The "bellows-thermal balloon" is depressurized - Replace the "bellows-thermal balloon"

Thermostat is out of alignment - Adjust the thermostat for response ranges between 50-90 ° C.

7. After shutdown, the burner does not turn on for a long time. The water in the tank is hot, the batteries are cold

No circulation in the heating system - Eliminate reverse slopes in the heating system. Eliminate air cushions in the heating system.

8. The presence of a flame on the firing holes of the main burner when the thermostat is turned off

Leakage of the thermostat valve due to dirt - Remove the front thermostat cover. Clean the valve plug and apply sealing grease.

9. Traction chopper door does not rotate or rotates tightly

Dirt on the door pivot - Remove any dirt from the door pivot and the axle seat in the traction chopper body.

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