For heating water used for domestic purposes and in water heating systems, various water heaters are used: VPG-18-A, AGV-80 and AGV-120.
Flowing gas water heater VPG-18-A, designed for continuous heating of running water, can be used for multi-point water intake. The water heater runs on natural and liquefied gases.
Water heater VPG-18-A is made in the form of a parallelepiped, the outer surfaces of which are covered with white enamel. The main elements of the apparatus are the main and ignition burner, heat exchanger, gas burner block, solenoid valve, thermoelectric thermometer, draft measuring transducer and piezoelectric ignition device... All elements of the apparatus are mounted in a split casing, so that you can freely inspect and repair its elements without removing the apparatus from the wall.
On the front wall of the apparatus are the gas valve control knob, buttons for switching on the electromagnetic valve and piezoelectric ignition device. In the upper part of the device there is a device for the removal of combustion products into the chimney, in the lower part there are pipes for connection to the water supply system and the gas pipeline. Automatic devices ensure the cessation of gas supply to the main burner if water does not flow to the device, in the absence of draft in the chimney and if the flame of the pilot burner goes out.
Technical characteristics of the water heater VPG-18-A
Water heaters VPG-18-A are installed in kitchens or bathrooms and are fastened with hooks or screws screwed into dowels embedded in a fireproof wall. If the water heater is mounted on a wooden plastered wall, then a 3 mm thick asbestos sheet of roofing steel is nailed to it behind the water heater.
Gas water heaters are installed at a distance of 970-1200 mm from the bottom of the body to the floor. The water heaters are connected to the chimney with roofing steel pipes. The pipe diameter must be at least the diameter of the branch pipe on the outlet device flue gas... The length of the vertical section of pipes above the traction chopper should be at least 0.5 m, and the horizontal section should not exceed 3 m in new houses and 6 m in previously built ones. The slope of the pipes is made 0.01 towards the water heater.
Pipes are tightly pushed into one another along the gas path by at least 0.5D) (where D is the pipe diameter) and they must have no more than three turns with a radius of curvature of at least D, At a distance of 10 cm from the end of the pipe, install a washer abutting into the wall.
The water heater is mounted as follows: they outline the installation site, mark and punch holes for the dowels, which are embedded in the wall. Then they are wrapped in dowels-screws, the water heater is hung and connected to the gas and water connections.
Automatic gas water heaters of the AGV type are DHW cylinders, used for hot water supply systems and providing multi-point water intake. Such water heaters are installed in bathrooms, kitchens or rooms with a volume of at least 6 m 3 with the obligatory connection to a separate gas duct. Automatic gas water heaters AGV-80 and AGV-120 consist of the following main elements: a galvanized welded tank, a combustion chamber with a burner, a thermostat, a magnetic gas valve, an ignition burner, a thermoelectric thermometer, a safety valve and a traction switch.
The casing 1 of the water heater AVG-80 (Fig. 244) is a cylinder made of sheet steel 1 mm thick and painted with enamel paint. Between the walls of the tank and the casing there is a 2 heat insulation - a layer of slag.
Rice. 244. Automatic gas water heater AGV-80:
1 - casing, 2 - thermal insulation, 3 - water tank, 4 - cold water pipeline. 5 - flame tube, 6 - gas flow extension, 7 - bleed nipple, 8 - thin, 9 - gas burner, 10 - air supply regulator, 11 - furnace door, 12 - thermocouple, 13 - temperature regulator sensor, 14 - tube igniter, 15 - thermocouple tube, 16 - burner tube, 17 - temperature regulator valve, 18 - button, 19 - solenoid valve, 20 - gas valve, 21 - plug valve, 22 - gas pipeline, 23 - pipe hot water, 24 - traction breaker
The cylinder tank with top and bottom bottoms is made of 3 mm thick galvanized steel. In the upper bottom there are two fittings with a diameter of 20 mm, one of them is used to connect pipelines 4 cold water, the other 23 - for hot water extraction.
Water is drained from the water heater through the nozzle 7.
A fire tube 5 with a diameter of 80 mm is located along the axis of the tank, through which hot gases pass from the combustion chamber and heat the water. To increase heat transfer, a gas flow extension 6 is placed inside the flame tube. A traction interrupter 24 is put on the top of the pipe.8 in the firebox 8 of the water heater there is a gas burner 9 low pressure injection type. On the gas pipeline 22, as well as in front of the burner and igniter, plug 21 and gas valves 20 are installed. To maintain a constant water temperature in the middle part of the water heater tank, a sensitive element 13 of the thermostat is installed.
Gas enters the burner through the solenoid valve 19, which is turned on by pressing the button 18, and the valve 17 of the thermostat. A thermoelectric thermometer tube 15 and a thermoelectric thermometer 12 with a bimetallic plate regulating the gas passage to the burner are located near the igniter tube 14.
The water heater tank is constantly under pressure from the water supply. The ignition field of the burner is warm from its flame and hot gases passing through the flame tube heat the water.
When the water in the tank is heated to a predetermined temperature, the brass tube of the regulator's sensitive element lengthens and pulls the stem of the regulator lever connected to it. The regulator levers are moved by the lever spring to another position and release the regulator valve. The valve is closed by its spring and the gas flow through the regulator to the burner is stopped. The flame in the burner goes out, but it burns in the igniter, since gas is supplied to it through the solenoid valve.
When the water in the tank is cooled below the set temperature, the regulator tube, while cooling, is shortened and presses the rod against the regulator lever. The regulator levers are moved by the lever spring to their original position and open the regulator valve. Gas flows through the solenoid valve and the regulator valve to the burner and is ignited from the igniter. If the igniter goes out, the thermoelectric thermometer cools down, the electric current in the circuit disappears, the solenoid valve closes and stops gas access to the burner and igniter. The air supply regulator 10 serves to regulate the amount of air supplied to the burner 9.
The device is also equipped with automatic control of draft and flame, with the help of which the gas supply is stopped in the absence of draft from the chimney or the flame of the pilot burner is extinguished.
Technical characteristics of AGV water heaters
When installing apartment heating and hot water supply from the AGV-80 water heater (Fig. 245), the cold water pipeline is connected to the water heater through the lower drain connection. A check valve and a valve are placed on the water supply line and a branch with a valve is arranged to drain water from the system. Hot water is directed through the upper fitting and the riser to the expansion vessel, from which the upper hot line of the heating system is laid. The hot riser is insulated. To increase the circulating pressure, it is recommended to install radiators at a height of 30-35 cm from the bottom of the appliance to the floor.
Rice. 245. Scheme of apartment heating and hot water supply from the AGV-80 gas water heater:
1 - pipe to the chimney, 2 - safety line from the valve, 3 - pipeline to the heating system, 4 - pipeline from the heating system
The return line is connected to the lower bleed nipple downstream of the check valve. A drain pipe is led from the expansion vessel to the sink. A safety valve is installed on the hot riser, from which a pipe is laid to a washbasin or sink. Hot water is supplied to sanitary fittings as shown in the figure. For the convenience of igniting the igniter and caring for the water heater, it is installed on a stand. When installing the water heater on a wooden floor, a steel sheet on asbestos cardboard should be placed under it.
For heating individual rooms with an area from 30 to 150 m 2, heating devices are used, respectively, AOG-5, AOGV-20, operating on natural and liquefied gas. The devices are made in the form of a rectangular cabinet (Fig. 246), the front surfaces of which are covered with white silicate enamel. The main elements of the apparatus are a combustion chamber, a heat exchanger, burners (one or two), an automatic combustion safety device that controls the presence of a flame on the pilot burner and a draft in the chimney, and an automatic device for regulating the temperature of water heating, which maintains its heating temperature within specified limits and when the maximum is reached, it turns off the gas supply to the main burner.
Rice. 246. Heating device
Technical characteristics of heating devices
Despite the fact that today the networks of housing and communal services are being modernized everywhere, the quality of the services they supply remains at a low level. This is especially true for hot water supply. To solve this problem, you should purchase a gas water heater once and for all. However, you first need to decide which model will suit you better than the rest.
Modern manufacturers offer these devices in a wide range. They have certain operational and technical characteristics. Columns can be classified into flow-through and storage. As for the former, they are smaller, which allows them to be installed even in a small room. Storage gas water heaters can hold from 50 to 500 liters of water.
The capacity in the structure has effective thermal insulation, which allows you to maintain high fever water for a long time, this helps to save energy. If you still cannot decide which gas water heater to choose, then you can pay attention to the equipment under the Astra brand, which will be discussed below. Such devices are good not only because they are made on the territory of Russia, which means that they have an acceptable cost, but also because of their maintainability. This indicates that in the event of a breakdown with a malfunction, you can figure it out yourself.
If you want to save twice, then you should purchase a water heater domestic production... These are just the gas columns "Astra". Consumers choose them for an affordable cost, but this plus cannot be called the only one. The units operate on liquefied and natural gas. Customers also like high level safety that the manufacturer has taken care of. After all, if the ignition burner goes out, then the water supply for heating will stop, this also applies to the automatic gas supply.
Such water heaters act as an optimal solution for domestic use. Customers also love the ease of use and maintenance. You don't have to spend money on this. Appearance design is attractive, the body has a modern and stylish design... Any manufacturer's gas water heater can be fitted into the interior of the room. Gas water heaters "Astra", according to buyers, are offered for sale in a wide range. That is why you can choose the most the best option that will meet the requirements and preferences of the consumer.
If you are interested in the Astra gas water heaters, then you should consider several models at once so that you have the opportunity to make right choice... Among others, the model VPG 8910-00.02 is presented on the market, which is manufactured in Russia. Its power can reach 21 kW. The structure is equipped with open chamber combustion and manual ignition.
The hot water supply capacity is 12 l / min. The supply water can have a temperature that varies from 35 to 60 ° C. During operation, the column consumes natural gas in a volume of 2.3 m 3 / h. The maximum water pressure can be 6 bar. The lowest working water pressure is equivalent to 0.5 bar.
Gas connection is carried out using communications that have the following parameters: 3/4 inch. Hot and cold water connections are made using pipes with a diameter of 1/2 inch. The chimney diameter reaches 120 mm. If you are considering Astra gas water heaters, then you should definitely be interested in their dimensions. As for the model described in the section, its dimensions are equal to 700x372x230 mm. The equipment weighs 15 kg.
In order to make the right choice, there are several models to consider. Among others, a variant of the VPG 8910-08.02 is presented on the market, the power of which reaches 18 kW. The design has an open combustion chamber and by hand ignition. The productivity of this model is slightly less and amounts to 10 l / min. The temperature of the supplied water remains at the same level, but the fuel consumption will be slightly lower and amount to 2 m 3 / h. The minimum and maximum working water pressure remains the same. The connection is carried out with the same parameters. The chimney diameter remains the same. The body of the design has identical parameters.
This gas water heater "Astra 8910" has a power of 18 kW. Electric ignition is carried out from batteries. The water capacity is 10 l / min. Natural gas consumption is 2 m 3 / h. The chimney diameter in this case is somewhat different, it is equivalent to 135 mm. This product comes with a two-year warranty.
The power of this equipment reaches 21 kW. Electric ignition is carried out from batteries. The hot water capacity is slightly higher, it is equal to 12 l / min. Natural gas consumption remains the same as in the first of the models described above, this parameter reaches 2.3 m 3 / h. The chimney diameter is 135 mm. The equipment weighs 15 kg.
Among the main advantages of the equipment described in the article, consumers distinguish:
The equipment, according to consumers, is maintainable. All spare parts can be found in service workshops. And the column itself is quite cheap. Customers are particularly fond of large combustion chambers, with some models reaching 20 kW.
The traction control for the 8910 is self-adjusting. Thermostat in this option located at the bottom. The smoke exhaust pipe is wide enough, but the column regulator is located under the central fitting. The frame of the structure, according to property owners who have purchased such equipment for themselves, is very durable, so it can withstand any load.
A protection system is provided for the power supply. Using special screws, you can easily adjust the fitting. The gas water heater "Astra", the instruction manual for which is supplied in the kit, has, in the opinion of consumers, an economical fuel consumption. The design has a high quality pressure regulator. Traction can be tested very easily. The removal of combustion products is fast. In matters of safety, the column outperforms other models.
Repair of the Astra gas column begins with shutting off the gas. The column does not need to be removed. The front part is dismantled with a screwdriver, but first you need to unscrew the bolts located on the sides. The first thing to check is the economizer, it is located behind the electrode. It will be quite difficult to remove the latter. It is fixed with 4 bolts. Do not touch the heat exchanger.
When you repair individual components, it is important not to touch the fitting, it is used to measure the pressure. If this part is damaged, you will have to change the head. In order to remove the economizer, only two side bolts need to be unscrewed. The consumer may well be able to make repairs with his own hands. The Astra gas water heater has contacts in the design, which are often contaminated. If they become unusable, then they need to be replaced. If the economizer does not work after replacement, then it will also have to be replaced. These malfunctions are among the main ones for the Astra speakers.
If you are faced with a problem when the Astra gas column does not light up, then this may indicate a lack of draft in the ventilation passage. Checking cravings is very simple. The gas column turns off, and a burning match should be brought to the chimney outlet. If the flame is carried away into the chimney, then everything is in order - you can connect the column. Otherwise, the chimney must be cleaned. However, it is better to entrust this matter to a special master.
The gas column "Astra", the malfunctions of which must be considered by you during the operation of this equipment, sometimes immediately goes out after ignition. In this case, you should adjust the cold water supply to the column. Do not try to dilute hot and cold water, this may cause the flame to fade.
If you purchased the Astra 8910 gas water heater, you may need spare parts for it during operation. You need to know what their cost is. For example, a water unit will cost 1,600 rubles. The gas part costs 1,500 rubles. The magnetic plug has a lower price - 205 rubles. The membrane costs 25 rubles. The repair kit for the water part costs 155 rubles, and the adjusting unit costs 55 rubles.
If you still do not know whether it is worth purchasing a gas column of the Astra brand, then you should consider its features in more detail. For example, copper heat exchanger all models have increased wall thickness. This provides good heat transfer from heated gases to water, which allows savings. For more convenient operation the manufacturer has provided the structure with a display with which you can determine the temperature of the heated water.
These water heaters(Table 133) (GOST 19910-74) are installed mainly in gasified residential buildings equipped with a water supply system, but do not have a centralized hot water supply. They provide fast (within 2 minutes) heating of water (up to a temperature of 45 ° C), continuously supplied from the water supply.
In terms of equipment with automatic and regulating devices, the devices are divided into two classes.
Table 133. TECHNICAL DATA OF APPLIANCES OF WATER-HEATING FLOW HOUSEHOLD GAS
Note. Devices of type 1 - with the removal of combustion products into the chimney, type 2 - with the removal of combustion products into the room.
Devices of the highest class (B) have automatic safety and regulation devices that provide:
b) shutdown of the main burner in the absence of vacuum in
Chimney (type 1 apparatus);
c) regulation of water consumption;
d) regulation of gas flow or pressure (natural gas only).
All units are equipped with an externally controlled ignition device, and type 2 units are additionally equipped with a temperature selector.
Devices of the first class (P) are equipped with automatic ignition devices providing:
a) gas access to the main burner only in the presence of a pilot flame and a water flow;
b) shutdown of the main burner in the absence of vacuum in the Chimney (type 1 apparatus).
The pressure of the heated water at the inlet is 0.05-0.6 MPa (0.5-6 kgf / cm²).
The devices must have gas and water filters.
Apparatuses are connected to water and gas pipelines using union nuts or couplings with locknuts.
Conventional designation of a water heater with a nominal heat load of 21 kW (18 thousand kcal / h) with combustion products discharge into a chimney, operating on gases of the 2nd category, the first class: VPG-18-1-2 (GOST 19910-74).
Flowing gas water heaters KGI, GVA and L-3 are unified and have three models: VPG-8 (flowing gas water heater); VPG-18 and VPG-25 (Table 134).
Rice. 128. Flowing gas water heater VPG-18
1 - cold water pipe; 2 - gas cock; 3 - pilot burner; 4-gas outlet device; 5 - thermocouple; 6 - electromagnetic valve; 7 - gas pipeline; 8 - hot water pipe; 9 - thrust sensor; 10 - heat exchanger; 11 - main burner; 12 - water-gas unit with nozzle
Table 134. TECHNICAL DATA OF FLOW-FLOW UNIFIED WATER HEATERS VPG
| Indicators | Water heater model | ||
| VPG-8 | VPG-18 | VPG-25 | |
| Heat load, kW (kcal / h) Heating capacity, kW (kcal / h) Allowable water pressure, MPa (kgf / cm²) |
9,3 (8000) 85 | 2,1 (18000)
18 (15 300) 0,6 (6) |
2,9 (25 000) 85
25 (21 700) 0,6 (6) |
| Gas pressure, kPa (kgf / m 2): natural liquefied The volume of heated water for 1 min at 50 e С, l Diameter of fittings for water and gas, mm Diameter of the branch pipe for the removal of combustion products, mm |
|||
| dimensions, mm; | |||
Table 135. TECHNICAL DATA OF GAS WATER HEATERS
| Indicators | Water heater model | |||
| KGI-56 | GVA-1 | GVA-3 | L-3 | |
| 29 (25 000) | 26 (22 500) | 25 (21 200) | 21 (18 000) | |
| Gas consumption, m 3 / h; | ||||
| natural | 2.94 | 2,65 | 2,5 | 2,12 |
| liquefied | - | - | 0,783 | |
| Water consumption, l / mn, temperature 60 ° С | 7,5 | 6 | 6 | 4,8 |
| Diameter of the branch pipe for the removal of combustion products, mm | 130 | 125 | 125 | 128 |
| Diameter of connecting nipples D mm: | ||||
| cold water | 15 | 20 | 20 | 15 |
| hot water | 15 | 15 | 15 | 15 |
| gas Dimensions, mm: height |
15 950 | 15 885 | 15 | 15 |
| width | 425 | 365 | 345 | 430 |
| depth | 255 | 230 | 256 | 257 |
| Weight, kg | 23 | 14 | 19,5 | 17,6 |
The names of the columns produced in Russia often contain the letters VPG: this is a water-heating device (V) flowing (P) gas (G). The number after the letters HSG indicates the heat output of the apparatus in kilowatts (kW). For example, VPG-23 is a flow-through gas water-heating apparatus with a thermal power of 23 kW. Thus, the name of modern speakers does not define their design.
The VPG-23 water heater was created on the basis of the VPG-18 water heater manufactured in Leningrad. Later, VPG-23 was produced in the 90s at a number of enterprises in the USSR, and then - SIG. A number of such devices are in operation. Individual nodes, for example water part, finds application in some models of modern Neva speakers.
The main specifications VPG-23:
VPG-23 consists of a gas outlet, a heat exchanger, a main burner, a valve block and an electromagnetic valve (Fig. 74).
The gas outlet serves to supply combustion products to the flue gas outlet of the column. The heat exchanger consists of an air heater and a fire chamber, surrounded by a cold water coil. The height of the VPG-23 fire chamber is less than that of the KGI-56, because the VPG burner provides better mixing of gas with air, and the gas burns with a shorter flame. A significant number of HPG columns have a heat exchanger consisting of one air heater. In this case, the walls of the fire chamber were made of steel sheet, the coil was absent, which made it possible to save copper. The main burner is multi-nozzle, it consists of 13 sections and a manifold, connected by two screws. The sections are assembled into a single whole with tie bolts. The manifold has 13 nozzles, each of which blows gas into its own section.
The block valve consists of gas and water parts, connected by three screws (Fig. 75). The gas part of the block valve consists of a body, a valve, a valve plug, a gas valve cover. A tapered liner for the gas valve plug is pressed into the body. The valve has a rubber seal on the outside diameter. A cone spring presses on it from above. The seat of the safety valve is made in the form of a brass insert pressed into the body of the gas part. The gas valve has a handle with a limiter that fixes the opening of the gas supply to the igniter. The valve plug is pressed against the tapered liner by a large spring.
There is a groove on the valve plug for gas supply to the igniter. When the valve is turned from the extreme left position by an angle of 40 °, the groove coincides with the gas supply hole, and gas begins to flow to the igniter. In order to supply gas to the main burner, the tap handle must be pressed and turned further.
The water part consists of the lower and upper covers, a Venturi nozzle, a diaphragm, a plate with a stem, an ignition retarder, a stem oil seal and a stem clamping sleeve. Water is supplied to the water part on the left, enters the under-membrane space, creating a pressure in it equal to the water pressure in the water supply system. After creating pressure under the membrane, the water flows through the venturi nozzle and rushes to the heat exchanger. The venturi nozzle is a brass tube, in the narrowest part of which there are four through holes that go into the outer circular groove. The recess is aligned with the through holes in both water end covers. Through these holes, the pressure from the narrowest part of the venturi nozzle will be transferred to the supra-membrane space. The poppet stem is sealed with a nut that compresses the PTFE packing.
Automation works on the water flow as follows. When water passes through the Venturi nozzle, in the narrowest part, the highest speed of movement of water and, therefore, the lowest pressure. This pressure is transmitted through the through holes to the supra-membrane cavity of the water part. As a result, a differential pressure appears below and above the membrane, which bends upward and pushes the plate with the stem. The stem of the water part, abutting against the stem of the gas part, lifts the valve from the seat. This opens the gas passage to the main burner. When the water flow is stopped, the pressure under and above the membrane is equalized. The cone spring presses on the valve and presses it against the seat, the gas supply to the main burner is stopped.
The solenoid valve (Fig. 76) is used to shut off the gas supply when the igniter goes out.
When you press the solenoid valve button, its stem rests on the valve and moves it away from the seat, while compressing the spring. At the same time, the armature is pressed against the core of the electromagnet. At the same time, gas begins to flow into the gas part of the block valve. After igniting the igniter, the flame begins to heat the thermocouple, the end of which is set in a strictly defined position in relation to the igniter (Fig. 77).
The voltage generated during the heating of the thermocouple is applied to the winding of the electromagnet core. In this case, the core holds the armature, and with it the valve, in the open position. The time it takes for the thermocouple to generate the required thermo-EMF and the solenoid valve starts to hold the armature is about 60 seconds. When the igniter goes out, the thermocouple cools down and stops generating voltage. The core no longer holds the armature; the spring closes the valve. The gas supply to both the igniter and the main burner is cut off.
The draft automatics turns off the gas supply to the main burner and the igniter if the draft in the chimney is disturbed; it works according to the principle of “gas removal from the igniter”. Traction automation consists of a tee that is attached to the gas part of the block valve, a tube to the traction sensor and the sensor itself.
Gas from the tee is supplied to both the igniter and the draft sensor installed under the gas outlet. The thrust sensor (Fig. 78) consists of a bimetallic plate and a union, secured with two nuts. The upper nut is at the same time a seat for the plug, which closes the gas outlet from the fitting. A pipe supplying gas from the tee is attached to the fitting with a union nut.
With normal draft, the combustion products go into the chimney without heating the bimetallic plate. The plug is tightly pressed against the seat, gas does not come out of the sensor. If the draft in the chimney is disturbed, the combustion products heat up the bimetallic plate. It bends upwards and opens the gas outlet from the choke. The gas supply to the igniter decreases sharply, the flame stops heating the thermocouple normally. It cools down and stops generating tension. As a result, the solenoid valve closes.
The main malfunctions of the VPG-23 column include:
1. The main burner does not light up:
2. When the water intake is stopped, the main burner does not go out:
3. Violation of the electrical circuit between the thermocouple and the electromagnet (open circuit or short circuit). Possible reasons are as follows:
4. Insufficient heating of the thermocouple:
The geyser NEVA 3208 is convenient, simple and reliable. Despite the venerable age of most of the exploited specimens, they quite regularly cope with their responsibilities for heating water. But sometimes you want to clarify something in the instruction manual. And this is where the problem comes in.
The original manual is most often lost, and the user manual is downloaded from the Internet. Neva-3208 impossible. More modern columns Neva 4000, 5000, Neva Lux 6000, boilers Neva Lux 8000 - please, but there are no instructions for Neva 3208.
The search comes across only fraudulent sites that require a cell phone number, but even there there is no instruction - one file name. This can be easily verified by trying to find a file on such a site with a deliberately non-existent name - for example, “ qwerrasdfgfgh - $% # [email protected]$ ". He will find it, and even say that it has been downloaded several thousand times! I hope that you do not fall for such tricks and do not enter your phone number on suspicious sites. And the instruction manual for the Neva-3208 geyser can be found here.
HOUSEHOLD GAS WATER FLOW HEATING APPLIANCE
NEVA-3208 GOST 19910-94
NEVA-3208-02 GOST 19910-94
OPERATING MANUAL 3208-00.000-02 OM
Dear customer!
When buying a device, check the completeness and presentation of the device, and also require the sales organization to fill out coupons for warranty repair
Before installing and operating the device, you must carefully read the rules and requirements set forth in this operation manual, the observance of which will ensure long-term trouble-free and safe operation of the water heater.
Failure to install and operate properly may result in an accident or damage to the device.
1. GENERAL INSTRUCTIONS
1.1. Household gas flowing water heating apparatus "NEVA-3208" (NEVA-3208-02) VPG-18-223-V11-P2 GOST 19910-94, hereinafter referred to as the "apparatus", is intended for heating water used for sanitary purposes (washing dishes , washing, bathing) in apartments, cottages, country houses.
1.2. The device is designed to operate on natural gas in accordance with GOST 5542-87 with a lower calorific value of 35570 +/- 1780 kJ / m3 (8500 +/- 425 kcal / m3) or liquefied gas in accordance with GOST 20448-90 with a lower calorific value of 96250 +/- 4810 kJ / m3 (23000 +/- 1150 kcal / m3).
At the factory, the device is adjusted to a specific type of gas, which is indicated on the plate on the device and in the "Certificate of Acceptance" section of this manual.
1.3. Installation, assembly, owner briefing, preventive maintenance, troubleshooting and repairs are carried out by operating organizations of the gas industry or other organizations licensed for this type of activity. Section 13 must be marked and stamped by the organization that installs the apparatus.
1.4. Checking and cleaning the chimney, repairing and monitoring the water supply system are carried out by the owner of the device or by the house management.
1.5. Responsibility for safe operation the device and its owner bears for its maintenance in proper condition.
2. TECHNICAL DATA
2.1. Rated thermal power 23.2 kW
2.2. Nominal heating capacity 18.0 kW
2.3. Rated thermal power of the pilot burner no more than 0.35 kW
2.4 Nominal pressure of natural gas 1274 Pa (130 mm H2O)
2.5 Nominal pressure liquefied gas 2940 Pa (300 mm H2O)
2.6. Nominal consumption of natural gas is 2.35 cubic meters. m / hour.
2.6. The nominal consumption of liquefied gas is 0.87 cubic meters. m / hour.
2.7. Efficiency not less than 80%
2.8. Supply water pressure for normal operation of the device 50 ... 600 kPa
2.9. Water consumption when heating at 40 degrees (at rated power) 6.45 l / min
2.10. Gas combustion products temperature not less than 110 degrees
2.11. Chimney vacuum not less than 2.0 Pa (0.2 mm water column), not more than 30.0 Pa (3.0 mm water column)
2.12. Ignition of the "NEVA-3208" apparatus is piezoelectric, of the "NEVA-3208-02" apparatus - with a match
2.13. Overall dimensions of the device: height 680 mm, depth 278 mm, width 390 mm
2.14. The mass of the device is not more than 20 kg
3. DELIVERY SET
3208-00.000 Neva-3208 or NEVA-3208-02 apparatus 1 pc.
3208-00.000-02 RE Operation manual 1 copy
3208-06.300 Package 1 pc.
3208-00.001 Handle 1 pc.
Wall mounting hardware 1 set
3103-00.014 Gasket 4 pcs.
3204-00.013 Bushing 1 pc.
4. SAFETY PRECAUTIONS
4.1. The room where the device is installed must be constantly ventilated.
4.2. To avoid a fire, do not put flammable substances and materials on the device or hang near it.
4.3. After stopping the operation of the device, it is necessary to disconnect it from the gas supply source.
4.4. To avoid defrosting the appliance, winter time(when installed in unheated rooms) it is necessary to drain the water from it.
4.5. In order to avoid accidents and breakdown of the device, consumers are FORBIDDEN:
a) independently install and start the device into operation;
b) allow children to use the device, as well as persons who are not familiar with this operation manual;
c) operate the device on gas that does not correspond to the one indicated on the plate on the device and the "Certificate of Acceptance" of this manual;
d) close the grate or gap in the lower part of the door or wall, intended for the flow of air necessary for the combustion of gas;
e) use the device in the absence of draft in the chimney;
f) use a faulty device;
g) independently disassemble and repair the device;
h) make changes to the design of the apparatus;
i) leave the working apparatus unattended.
4.6. During normal operation of the device and with a working gas pipeline, there should be no smell of gas in the room.
If you smell gas in the room, IT IS NECESSARY:
a) turn off the device immediately;
b) close the gas cock located on the gas pipeline in front of the apparatus;
c) thoroughly ventilate the room;
d) immediately call emergency service gas facilities, tel. 04.
Until the gas leak is eliminated, do not carry out any work related to sparking: do not light a fire, do not turn on or off electrical appliances and electric lighting, do not smoke.
4.7. If an abnormal operation of the device is detected, it is necessary to contact the gas service and, until the malfunctions are eliminated, do not use the device.
4.8. When using a faulty device or if the above operating rules are not followed, an explosion or poisoning with gas or carbon monoxide (carbon monoxide) in the products of incomplete gas combustion may occur.
The first signs of poisoning are: heaviness in the head, palpitations, tinnitus, dizziness, general weakness, then nausea, vomiting, shortness of breath, impaired motor functions may appear. A burnt person may suddenly lose consciousness.
To provide first aid, it is necessary: take the victim to fresh air, unfasten the clothes that are restricting breathing, let them smell ammonia, cover warmly, but do not let sleep and call a doctor.
If there is no breathing, immediately take the victim to a warm room with fresh air and perform artificial respiration, without stopping it until the doctor arrives.
5. STRUCTURE AND OPERATION OF THE APPARATUS
5.1. Device device
5.1.1. Apparatus (Figure 1) wall type has a rectangular shape, formed by a removable cladding 7.
5.1.2. All the main elements of the apparatus are mounted on a frame. On the front side facing are located: handle 2 for controlling the gas valve, button 3 for switching on the solenoid valve, viewing window 8 for observing the flame of the pilot and main burners.
5.1.3. The apparatus (Fig. 2) consists of a combustion chamber 1 (which includes a frame 3, a gas outlet 4 and a heat exchanger 2), a water-gas burner unit 5 (consisting of a main burner 6, a pilot burner 7, a gas valve 9, a water regulator 10, a valve electromagnetic 11) and tube 8, designed to turn off the water heater in the absence of draft in the chimney.
NOTE: Due to the fact that JSC continues to work on further improvement of the device design, the purchased device may not completely coincide in some elements with the description or image in the "Operation Manual".
5.2. Description of the device
5.2.1. Gas through the branch pipe 4 (Fig. 1) enters the solenoid valve 11 (Fig. 2), the switch button 3 (Fig. 1) of which is located to the right of the gas valve switch knob.
5.2.2. When you press the solenoid valve button and open ”(to the“ Ignition ”position) (Fig. 3) the valve, the gas flows to the ignition burner. The thermocouple, heated by the flame of the pilot burner, transmits EMF to the valve solenoid, which automatically keeps the valve disc open and provides gas access to the gas cock.
5.2.3. When knob 2 (Fig. 1) is turned clockwise, gas valve 9 (Fig. 2) performs the sequence of turning on the ignition burner to the "Ignition" position (see Fig. 3), gas supply to the main burner in the "Appliance on" position ( see fig. 3) and adjusts the amount of gas to the main burner between the positions "High flame" - "Low flame" (see fig. 3) to obtain the desired water temperature. In this case, the main burner lights up only when water flows through the device (when the hot water tap is opened).
5.2.4 The device is turned off by turning the control knob counterclockwise to the stop, while the main and pilot burners are instantly extinguished. The valve of the electromagnetic plug will remain open until the thermocouple cools down (10 ... 15 s).
5.2.5. To ensure smooth ignition of the main burner, an ignition retarder is provided in the water regulator, which works as a choke when water flows out of the supra-membrane cavity and slows down the movement of the membrane upward, and, consequently, the ignition speed of the main burner.
The device is equipped with safety devices that ensure:
1 - branch pipe, 2 - handle; 3 - button: 4 - gas inlet pipe; 5 - hot water outlet, 6 - cold water inlet; 7 - facing, 8 - observation window
Figure 1. Apparatus water-heating flow-through gas household
1 - combustion chamber; 2 - heat exchanger; 3 - frame; 4 - gas outlet device; 5 - water and gas burner unit; 6 - main burner; 7 - pilot burner; 8 - thrust sensor tube; 9 - gas tap: 10 - water regulator; 11 - electromagnetic valve; 12 - thermocouple; 13 - piezo ignition (NEVA-3208); 14 - plate.
Figure 2. Apparatus water-heating flow-through gas household (without lining)
Figure 3. Positions of the gas cock control knob
6. INSTALLATION PROCEDURE
6.1. Installing the device
6.1.1. The device must be installed in kitchens or other non-residential premises in accordance with the Gasification Project and SNiP 2.04.08.87
6.1.2. Installation and assembly of the device must be carried out by the operating organization of the gas economy or other organizations licensed for this type of activity.
6.1.3. The device is hung with holes (on the frame) on a special bracket mounted on the wall. The mounting holes of the device are shown in Figure 4. It is recommended to install the device so that the viewing window 8 (see Figure 1) is at the consumer's eye level.
6.1.4. Connecting dimensions of pipelines for gas inlet, water inlet and outlet, flue gas outlet through the flue pipe are shown in Figure 1
6.2. Water and gas connection
6.2.1 Connection should be made with pipes with DN 15 mm. When installing pipelines, it is recommended to first connect to the water inlet and outlet points, fill the heat exchanger and water system water and only then connect to the gas supply point. The connection should not be accompanied by mutual tension of pipes and parts of the apparatus in order to avoid displacement or breakage of individual parts and parts of the apparatus and violation of the tightness of the gas and water systems.
6.2.2. After installing the device, the places of its connections with communications should be checked for tightness. Checking the tightness of the joints of the water inlet and outlet is carried out by opening the shut-off valve (see Fig. 4) of cold water (with the water taps closed). Leakage at the joints is not allowed.
Check the tightness of the gas inlet connection by opening the common valve on the gas pipeline with the device handle closed ("Device off" position). The check is carried out by soaping the joints or using special devices. Gas leakage is not allowed.
6.3. Installation of a chimney for the removal of combustion products
The apparatus must be provided with a system for the removal of combustion products from the apparatus outside the building. Flue pipes must meet the following requirements:
6.3.3. The connection between the appliance and the flue pipe must be tight. It is recommended to install the pipe according to the diagram in Figure 5.
6.4. After installation, assembly and tightness test, the operation of the safety automation must be checked (clauses 5.2.5 and 5.2.6.).
Figure 4. Installation diagram of the device
1 - chimney; 2 - branch pipe; 3 - heat-resistant sealant
Figure 5. Connection diagram of the flue gas pipe
7. ORDER OF WORK
7.1. Turning on the device
7.1.1. To turn on the device, it is necessary (see Fig. 4)
a) open the common valve on the gas pipeline in front of the device;
b) open the cold water shut-off valve (in front of the device);
c) set the handle of the device to the "Ignition" position (see Fig. 3),
d) press the solenoid valve button 3 (see Fig. 1) and repeatedly press the piezo ignition button 13 (see Fig. 2) (or bring the lighted match to the ignition burner) until a flame appears on the ignition burner;
e) release the solenoid valve button after turning it on (after no more than 60 s), while the ignition burner flame should not go out.
CAUTION: to avoid burns, do not bring your eyes too close to the viewing window.
At the first ignition or after a long period of non-use of the apparatus, in order to remove air from the gas lines, repeat the indicated operations for the items d and e.
f) open the gas valve to the main burner, for which the handle of the gas valve should be turned to the right as far as it will go ("Large flame" position). In this case, the pilot burner continues to burn, but the main burner has not yet ignited.
g) open the water tap, and the main burner should ignite. Adjustment of the degree of water heating is carried out by turning the knob of the device within the limits of the positions "Large flame" - "Small flame" or by changing the flow rate of water passing through the device.
7.2. Turning off the device
7.2.1. At the end of use, you must turn off the device, observing the following sequence:
a) close water taps(see Figure 4);
b) turn the knob 2 (see Fig. 1) to the position "The device is off" (counterclockwise until it stops);
c) close the common valve on the gas pipeline;
d) close the cold water shut-off valve.
8. MAINTENANCE
8.1. Regular care, inspection and maintenance is essential to ensure long-term trouble-free operation and maintain the performance of the machine. Care and inspection are performed by the owner of the device.
Maintenance is carried out at least once a year by gas service specialists or other organizations licensed for this type of activity.
8.2.1. The device should be kept clean, for which it is necessary to regularly remove dust from the upper surface of the device, and also to wipe the casing, first with a damp and then with a dry cloth. In case of significant contamination, first wipe the casing with a wet cloth dampened with a neutral detergent and then with a dry cloth.
8.2.2. It is forbidden to apply detergents strong action and containing abrasive particles, gasoline or other organic solvents for cleaning the surface of the cladding and plastic parts.
8.3. Inspection
Before each switching on of the device, it is necessary:
a) check the absence of combustible objects near the apparatus;
b) check for gas leakage (by characteristic smell) and water leakage (visually);
c) check the serviceability of the burners by the combustion pattern:
the flame of the pilot burner must be elongated, not smoky and reach the main burner (a deviation of the flame sharply upward indicates clogging of the air supply ducts to the burner);
the main burner flame must be blue, steady and free of yellow smoky tongues, indicating contamination of the outer surfaces of the nozzles and inlets of the burner sections.
In the event of gas and water leaks, as well as burner malfunctions, it is necessary to repair and maintain the device.
8.4. Maintenance
8.4.1. During maintenance, the following work is performed:
Works related to maintenance are not the manufacturer's warranty.
9. POSSIBLE FAULTS OF THE DEVICE NEVA 3208 AND METHODS OF THEIR ELIMINATION
Fault name | Probable cause | Elimination methods |
Ignitor hardly ignites or does not ignite at all | The presence of air in gas communications. | See clause 7.1 Switching on the device |
Clogged pilot nozzle | ||
Replace LPG cylinder |
||
When the solenoid valve button is released (after a control time of 60 s), the igniter goes out. | The flame of the pilot burner does not heat the thermocouple | Call the gas service |
Thermocouple electrical circuit is broken - solenoid valve | Check thermocouple contact with solenoid valve(if necessary, clean the contacts) Check the tightening of the thermocouple connection with the solenoid valve, while remembering: the tightening force should ensure reliable contact, but should not exceed 1.5 Nm (0.15 kg-m) in order to avoid the failure of these units. |
|
Failed electromagnetic plug or thermocouple | Call the gas service |
|
The main burner does not ignite or is difficult to ignite when opening the hot water tap. | Insufficient opening of the gas valve on the apparatus or the common valve on the gas pipeline | Turn the handle of the device to the "Big flame" position and open the common valve on the gas pipeline completely |
Low gas pressure | Call the gas service |
|
Low tap water pressure | Temporarily do not use the device |
|
The water filter is clogged, the membrane is torn, or the water block plate is broken | Call the gas service |
|
The main burner does not go out when the hot water tap is closed | Jammed stem of gas or water block | Call the gas service |
The flame of the main burner is sluggish, elongated, with yellow smoky tongues | Dust deposits on the nozzles and internal surfaces of the main burner | Call the gas service |
After a short time of operation, the device turns off spontaneously | No draft in the chimney | Clean the chimney. |
The supply of liquefied gas in the cylinder has run out | Replace LPG bottle. |
|
The handle of the valve plug is turned with considerable effort | Drying out the grease | Call the gas service |
Ingress of contamination | Call the gas service |
|
Low water consumption at the outlet of the apparatus with normal water pressure in the pipeline | Scale in the heat exchanger or in the hot water outlet | Call the gas service |
Insufficient water heating | High water consumption | |
Deposition of soot on the fins of the heat exchanger or scale in the tubes of the heat exchanger | Call the gas service |
|
During the operation of the device, there is an increased noise from the flowing water | High water consumption | Adjust the water flow to 6.45 l / min. |
Misaligned gaskets in the water block connection | Correct misalignment or replace gaskets. |
|
The main burner is ignited with a "pop" and the release of the flame from the casing window | The flame of the pilot burner is small or deviates sharply upward and does not reach the main burner (the nozzle is clogged or the air supply channel to the igniter is clogged with dust, the groove on the valve plug is partially clogged with grease, low gas pressure) | Call the gas service |
Ignition retarder does not work | Call the gas service |
|
The igniter does not ignite from the piezo ignition (it ignites normally from a match) | There is no spark between the spark plug and the igniter | Check the connection of the wires of the piezoelectric generator to the candle and to the body of the device. |
Weak spark between spark plug and igniter | Set a 5 mm gap between the spark plug electrode and the igniter. |
10. STORAGE RULES
10.1. The device must be stored and transported only in the position indicated on the handling signs.
10.2. The device should be stored in a closed room that guarantees protection against atmospheric and other harmful influences at an air temperature from -50 ° C to + 40 ° C and a relative humidity of not more than 98%.
10.3. When the device is stored for more than 12 months, the latter must be preserved in accordance with GOST 9.014
10.4. The openings of the inlet and outlet pipes must be closed with plugs or plugs.
10.5. Every 6 months of storage, the device must undergo a technical inspection, during which the absence of moisture and dust clogging of the units and parts of the device is checked.
10.6. Apparatus should be stacked in no more than five tiers when stacked and transported.
11. CERTIFICATE OF ACCEPTANCE
Apparatus water-heating flow-through gas household. NEVA - 3208 complies with GOST 19910-94 and is recognized as fit for operation
12. WARRANTY OBLIGATIONS
The manufacturer guarantees the trouble-free operation of the device in the presence of project documentation to install the device and if the consumer observes the rules of storage, installation and operation, established by this "Operation Manual".
The warranty period for the device is 3 years from the date of sale through a retail network; 3 years from the date of receipt by the consumer (for off-market consumption);
12.3. Warranty repairs of the device are carried out by gas services, the manufacturer or other organizations licensed for this type of activity.
12.4. Average service life of the device is not less than 12 years.
12.5. When buying a device, the buyer must receive the "Operation Manual" with the store's mark of the purchase and check for the presence of tear-off coupons for warranty repairs.
12.6. If the warranty coupons do not contain a store stamp with the date of sale of the device, the warranty period is calculated from the date of its release by the manufacturer.
12.7. When repairing the device, the warranty card and the back to it are filled in by an employee of the gas industry or an organization licensed for this type of activity. The warranty card is withdrawn by an employee of a gas facility or an organization licensed for this type of activity. The back of the warranty card remains in the instruction manual.
12.8. The manufacturer is not responsible for the malfunction of the device and does not guarantee its operation if the consumer presents evidence of:
a) non-observance of the rules of installation and operation;
b) non-observance of the rules of transportation and storage by the Consumer, trading and transport organizations;
Evidence can be presented both in the form of an opinion of an independent Expert, and in the form of an act drawn up by a representative of the Manufacturer and signed by the Consumer.
