Geyser vpg 23 specifications. Gas instantaneous water heaters. Review questions

Feb 21, 2013, 09:36

For some reason, the DGU 23 column began to ignite badly. The problem did not indicate itself before. In short, you bring a match - the gas ignites, you remove your hand from the button - the gas goes out. You repeat the procedure several times - the gas burns normally. Then about 10 minutes pass - again the same story, the gas goes out.

I don't know why, can anyone give me some advice?

Feb 21, 2013, 09:39

This is most likely a deterioration in the contact of the thermocouple. There is a thermocouple that controls the flame protection system. So it most likely works, you need to try to disassemble and make contact, if that's the case.

If after this procedure the device did not work properly, then the matter is something else.

The gas column electron vpg 23 ignites poorly.

Feb 21, 2013, 09:42

Not a fact, it could be the weakening of the water pressure. This happens all the time. If the matter is still in the water, it is necessary to put a 230V pump at the column inlet. But before taking any action, it is necessary to establish exactly what the reason is. It is better to invite a professional gasman from service 04 or another similar one.

The gas column electron vpg 23 ignites poorly.

Feb 21, 2013, 09:43

And what kind of column is HSV 23, I have never met. Is this a hand held device? I think the matter is in the gas opening valve, it happens that it does not work and hence the whole problem, it often breaks. It is necessary to invite a specialist, he will determine exactly what the reason is in 5 minutes, maybe he will eliminate it in the next 15 minutes.

On the phone, explain to them in words what does not work. Let him bring spare parts with him.

The gas column electron vpg 23 ignites poorly.

Mar 06, 2013, 11:45

Do not believe me, I also have the same column, but the problem is different. Very weak pressure hot water, a geyser is straight from a cold tap, but a hot one is barely flowing. The pipes are not Soviet, but like plastic (I've been renting this apartment for only 2 years and I don't really understand plumbing, etc.
Photos of what the column looks like found here

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The gas column electron vpg 23 ignites poorly.

Mar 07, 2013, 07:33

It's most likely a clogged heat exchanger - you need to clean it. The hydrostatic resistance is too high, so the water flows weakly. Further, this will lead to an emergency operation of the protection and shutdown of the geyser. cleaning the body exchanger from scale is not expensive, but replacing it entirely costs a pretty penny.

The gas column electron vpg 23 ignites poorly.

Mar 07, 2013, 10:10

And how to clean it? Or at least what he looks like

The gas column electron vpg 23 ignites poorly.

Mar 08, 2013, 08:30

dimikosha wrote: how to clean it? Or at least what he looks like

If by ourselves, then who does what. First you need to remove it, open the lid, unwind the couplings. Remove the heat exchanger and pour acid into it. Someone uses lemon, someone special. the composition of their households. magician., and someone even Coca-Cola. Then everything is washed with a solution of soda and mounted back. Should help.

The gas column electron vpg 23 ignites poorly.

09 Mar 2013, 19:21

It is better to call the service exchange, he will already have everything with him.
If by ourselves, then who does what. First you need to remove it, open the lid, unwind the couplings. Remove the heat exchanger and pour acid into it. Someone uses lemon, someone special. the composition of their households. magician., and someone even Coca-Cola. Then everything is washed with a solution of soda and mounted back. Should help.

Thank you, better of course the serviceman))

The gas column electron vpg 23 ignites poorly.

In accordance with the requirements of the regulatory and technical documents in force on the territory of the Russian Federation, maintenance and repair of gas-consuming equipment must be carried out by a specialized organization that has a certificate of admission to this species works, as well as duly certified personnel.
Independent manipulations with this type of equipment are also contrary to common sense!

Conclusion: invite specialists from the service organization.

Malfunctions of the column KGI-56

Insufficient water pressure;

The hole in the submembrane space is clogged - clean it;

The stem does not move well in the stuffing box - refill the stuffing box and lubricate the stem.

2. When the water intake is stopped, the main burner does not go out:

Clogged hole in the supra-membrane space - clean;

Dirt got under the safety valve - clean;

Weakened small spring - replace;

The stem does not move well in the stuffing box - refill the stuffing box and lubricate the stem.

3. Radiator clogged with soot:

Adjust the combustion of the main burner, clean the soot from the radiator.

HSV-23

The name of a modern column made in Russia almost always contains letters HSV: this is a water-heating device (V) flow-through (P) gas (G). The number after the letters HSV indicates thermal power 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.

Water heater VPG-23 created on the basis of the water heater VPG-18, produced in Leningrad. In the future, HSV-23 was manufactured in the 80-90s. at a number of enterprises in the USSR and then in the CIS.

HSV-23 has the following specifications:

thermal power - 23 kW;

water consumption when heated to 45°C - 6 l/min;

water pressure - 0.5-6 kgf / cm 2.

VPG-23 consists of a gas outlet, a radiator (heat exchanger), a main burner, a block valve and an electromagnetic valve (Fig. 23).

gas outlet serves to supply combustion products to the flue pipe of the column.

The heat exchanger consists from a heater and a fire chamber surrounded by a coil cold water. The size of the fire chamber VPG-23 is smaller than that of 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 VPG columns have a radiator consisting of a single heater. The walls of the fire chamber in this case are made of steel sheet, which saves copper.

Main burner consists of 13 sections and a collector, interconnected by two screws. Sections are assembled into a single whole with the help of coupling bolts. There are 13 nozzles installed in the collector, each of which supplies gas to its section.

Rice. 23. HSV-23 column

Block crane consists from the gas and water parts, connected by three screws (Fig. 24).

gas part block valve consists of a body, a valve, a conical insert for a gas valve, a valve plug, a gas valve cover. The valve has rubber seal by outer diameter. A conical spring presses on top of it. The seat of the safety valve is made in the form of a brass insert pressed into the body of the gas section. The gas cock has a handle with a limiter that fixes the opening of the gas supply to the igniter. The faucet plug is held in the body by a large spring. The valve plug has a recess for supplying gas to the igniter. When the valve is turned from the extreme left position at an angle of 40 °, the groove coincides with the gas supply hole, and the gas begins to flow to the igniter. In order to supply gas to the main burner, it is necessary to press the handle of the valve and turn further.

Rice. 24. Block crane VPG-23

water part consists of bottom and top covers, venturi nozzle, diaphragm, poppet with stem, retarder, stem seal and stem clamp. Water is supplied to the water part on the left, enters the submembrane space, creating a pressure in it equal to the water pressure in the water supply system. Having created pressure under the membrane, the water passes through the Venturi nozzle and rushes to the radiator. The Venturi nozzle is a brass tube with four through holes in its narrowest part that open into an outer circular groove. The undercut coincides with the through holes that are in both covers of the water part. Through these holes, pressure from the narrowest part of the Venturi nozzle is transferred to the supra-membrane space. The poppet stem is sealed with a nut that compresses the PTFE gland.

Water flow automatic in the following way. With the passage of water 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 through holes into the supra-membrane cavity of the aquatic part. As a result, a pressure difference appears under and above the membrane, which bends upward and pushes the plate with the stem. The stem of the water part, resting against the stem of the gas part, lifts the safety valve from the seat. As a result, the gas passage to the main burner opens. When the water flow stops, the pressure under and above the membrane equalizes. The cone spring presses the safety valve and presses it against the seat, the gas supply to the main burner stops.

Solenoid valve(Fig. 25) serves to turn off the gas supply when the igniter goes out.

Rice. 25. Solenoid valve VPG-23

When the solenoid valve button is pressed, its stem rests against 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 ignition of the igniter, the flame begins to heat the thermocouple, the end of which is installed in a strictly defined position with respect to the igniter (Fig. 26).

Rice. 26. Installation of the igniter and thermocouple

The voltage generated during the heating of the thermocouple is supplied to the winding of the core of the electromagnet. The core begins to hold the anchor, and with it the valve, in the open position. Solenoid valve response time - about 60 sec. When the igniter goes out, the thermocouple cools down and stops generating voltage. The core no longer holds the anchor, under the action of the spring the valve closes. The gas supply to both the igniter and the main burner is stopped.

Traction control turns off the gas supply to the main burner and igniter in case of violation of draft in the chimney. It works on the principle of "removal of gas from the igniter".

Rice. 27. Traction sensor

The automation consists of a tee, which is attached to the gas part of the block valve, a tube to the draft 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. 27) consists of a bimetallic plate and a fitting, reinforced with two nuts. The top nut is also a seat for a plug that shuts off the gas outlet from the fitting. A tube 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 falling on the bimetallic plate. The plug is tightly pressed against the seat, the 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 up and opens the gas outlet from the fitting. The gas supply to the igniter decreases sharply, the flame ceases to heat the thermocouple normally. It cools down and stops producing voltage. As a result, the solenoid valve closes.

Faults

1. The main burner does not light up:

Insufficient water pressure;

Deformation or rupture of the membrane - replace the membrane;

Clogged Venturi nozzle - clean;

The rod came off the plate - replace the rod with the plate;

Distortion of the gas part in relation to the water part - align with three screws;

2. When the water intake is stopped, the main burner does not go out:

Dirt got under the safety valve - clean;

Weakened cone spring - replace;

The stem does not move well in the stuffing box - lubricate the stem and check the tightening of the nut.

3. In the presence of an igniter flame, the solenoid valve is not held in the open position:

a) electrical failure circuit between thermocouple and electromagnet - open or short circuit. Maybe:

Lack of contact between the thermocouple and electromagnet terminals;

Violation of the insulation of the copper wire of the thermocouple and its short circuit with the tube;

Violation of the insulation of the turns of the electromagnet coil, shorting them to each other or to the core;

Violation of the magnetic circuit between the armature and the core of the electromagnet coil due to oxidation, dirt, grease, etc. It is necessary to clean the surfaces with a piece of coarse cloth. Cleaning of surfaces with needle files, sandpaper, etc. is not allowed;

b) insufficient heating thermocouples:

The working end of the thermocouple is smoky;

The igniter nozzle is clogged;

The thermocouple is incorrectly installed relative to the igniter.

FAST column

Flowing water heaters FAST have an open combustion chamber, combustion products are removed from them due to natural draft. Columns FAST-11 CFP and FAST-11 CFE heat 11 liters of hot water per minute when the water is heated at 25°C

(∆T = 25°С), columns FAST-14 CF P and FAST-14 CF E - 14 l/min.

Flame control on FAST-11 CF P (FAST-14 CF P) produces thermocouple, on columns FAST-11 CF E (FAST-14 CF E) - ionization sensor. Speakers with an ionization sensor have an electronic control unit that needs power supply - a 1.5 V battery. The minimum water pressure at which the burner ignites is 0.2 bar (0.2 kgf / cm 2).

The scheme of the FAST CF water heater model E (i.e. with an ionization sensor) is shown in fig. 28. The column consists of the following nodes:

Gas outlet (traction diverter);

Heat exchanger;

Burner;

Control block;

Gas valve;

Water valve.

The gas outlet is made of 0.8 mm thick aluminum sheet. The diameter of the FAST-11 smoke outlet is 110 mm, FAST-14 is 125 mm (or 130 mm). A draft sensor is installed on the gas outlet 1 . The heat exchanger of the water heater is made of copper using the “Water cooling of the combustion chamber” technology. Copper tube has a wall thickness of 0.75 mm, an inner diameter of 13 mm. The burner model FAST-11 has 13 nozzles, FAST-14 has 16 nozzles. The nozzles are pressed into the manifold; when switching from natural gas to liquefied gas or vice versa, the manifold is replaced entirely. An ionization electrode is fixed on the burner 4, ignition electrode 2 and igniter 3.

Rice. 28. Scheme of the FAST CFE water heater

Electronic control unit powered by a 1.5 V battery. Ionization and ignition electrodes, a draft sensor, an on / off button 5, a microswitch are connected to it 6, as well as the main solenoid valve 7 and the igniter solenoid valve 8. Both solenoid valves enter the gas valve, which also has a diaphragm 9, main valve 10 and cone valve 11. The gas valve has a device for adjusting the gas supply to the burner (12). The user can adjust the gas supply from 40 to 100% of the possible value.

The water valve has a diaphragm with a poppet 13 and venturi tube 14. With water temperature controller 15 the consumer can change the flow of water through the water heater from the minimum (2-5 l / min) to the maximum (11 l / min or 14 l / min, respectively). The water valve has a master regulator 16 and additional regulator 17, as well as a flow regulator 18. A vacuum tube is used to provide a pressure drop across the membrane. 19.

FAST CF model E columns are automatic, after pressing the button on off" 5 further switching on and off is carried out by a hot water tap. When the water flow through the water valve is more than 2.5 l / min, the membrane with a plate 13 shifts and turns on the microswitch 6, and also opens the cone valve 11. main valve 10 before switching on, it is closed, since the pressure above and below the membrane 9 is the same. The above-membrane and sub-membrane spaces are interconnected through a normally open main solenoid valve 7. After switching on, the electronic control unit supplies sparks to the ignition electrode 2 and voltage to the igniter solenoid valve 8, which was closed. If after ignition of the igniter 3 ionization electrode 4 detects a flame, the main solenoid valve is energized 10 and it closes. Gas from under the membrane 9 goes to the fire. Pressure under the diaphragm 9 decreases, it moves and opens the main valve 10. Gas goes to the burner, it ignites. Igniter 3 goes out, the power to the igniter valve is turned off. If the burner goes out, through the ionization electrode 4 the current will stop flowing. The control unit will turn off the power to the main solenoid valve 7. It will open, the pressure under and above the membrane will equalize, the main valve 10 will close. The change in burner power is automatic and depends on the water flow. conical valve 11 due to its shape, it ensures a smooth change in the amount of gas supplied to the burner.

Water valve works in the following way. With the flow of water, the membrane with a plate 13 deviates due to changes in pressure below and above the membrane. The process occurs due to the Venturi tube 14. As water flows through the constriction of the venturi, the pressure decreases. Through a vacuum tube 19 the reduced pressure is transferred to the supra-membrane space. Main regulator 16 connected to the membrane 13. It moves depending on the water flow, as well as the position of the additional regulator 1 7. The water flow is terminated through a venturi tube and an open temperature controller 15. temperature controller 15 the consumer can change the water flow, which allows some of the water to be supplied bypassing the venturi. The more water passes through the temperature controller 15, the lower its temperature at the outlet of the water heater.

Gas supply regulation on the burner depending on the water flow is as follows. With an increase in flow, the membrane with a plate 13 is rejected. With it, the main regulator deviates 16, the water flow decreases, i.e. the water flow depends on the position of the membrane. At the same time, the position of the cone valve 11 in the gas valve also depends on the movement of the diaphragm with the plate 13.

When you turn off the hot tap water pressure on both sides of the membrane with a plate 13 levels out. Spring closes the cone valve 11.

Thrust sensor 1 installed at the gas outlet. In case of violation of traction, it is heated by combustion products, the contact in it opens. As a result, the control unit is disconnected from the battery, the water heater turns off.

Review questions

1. What is the nominal pressure of LPG for domestic stoves?

2. What needs to be done to transfer the stove from one gas to another?

3. How is the slab faucet arranged?

4. How is the electric ignition of the stove burners carried out?

5. Describe the main malfunctions of the plates.

6. Explain the sequence of actions when igniting the burners of the stove.

7. What are the main nodes of the column?

8. What does dispenser safety automation control?

9. How is the gas part of KGI-56 arranged?

10. How does block crane KGI-56 work?

11. How is the water part of HSV-23 arranged?

12. Where is the venturi nozzle in HSV-23?

13. Describe the operation of the water part of HSV-23.

14. How does the HSV-23 solenoid valve work?

15. How does automatic traction control VPG-23 work?

16. For what reason can the main burner HSV-23 not light up?

17. What is the minimum water pressure to operate the FAST dispenser?

18. What is the supply voltage of the FAST speaker?

19. Describe the device of the FAST column gas valve.

20. Describe the operation of the FAST column.

In the name of columns produced in Russia, the letters VPG are often present: this is a water-heating (V) flow-through (P) gas (G) apparatus. The number after the letters VPG indicates the thermal power of the device in kilowatts (kW). For example, VPG-23 is a flow-through gas water heater with a heat output 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, produced in Leningrad. In the future, 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. Separate nodes, for example, the water part, are used in some models of modern Neva columns.

Main specifications HSV-23:

thermal power - 23 kW;
productivity when heated to 45 ° C - 6 l / min;
minimum water pressure - 0.5 bar:
maximum water pressure - 6 bar.

VPG-23 consists of a gas outlet, a heat exchanger, a main burner, a block valve and an electromagnetic valve (Fig. 74).

The gas outlet is used to supply combustion products to the flue pipe of the column. The heat exchanger consists of a 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 HSV columns have a heat exchanger consisting of a single heater. The walls of the fire chamber in this case were made of steel sheet, there was no coil, which made it possible to save copper. The main burner is multi-nozzle, it consists of 13 sections and a manifold connected to each other by two screws. Sections are assembled into a single whole with the help of coupling bolts. There are 13 nozzles installed in the collector, each of which pours 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 conical insert for the gas valve plug is pressed into the body. The valve has a rubber seal on the outer diameter. A conical spring presses on top of it. The seat of the safety valve is made in the form of a brass insert pressed into the body of the gas section. The gas cock has a handle with a limiter that fixes the opening of the gas supply to the igniter. The faucet plug is pressed against the conical liner by a large spring.

The valve plug has a recess for supplying gas to the igniter. When the valve is turned from the extreme left position at an angle of 40 °, the groove coincides with the gas supply hole, and the gas begins to flow to the igniter. In order to supply gas to the main burner, the valve handle must be pressed and turned further.

The water part consists of the bottom and top caps, Venturi nozzle, diaphragm, poppet with stem, retarder, stem seal and stem clamp. Water is supplied to the water part on the left, enters the submembrane space, creating a pressure in it equal to the water pressure in the water supply system. Having created pressure under the membrane, water passes through the Venturi nozzle and rushes to the heat exchanger. The Venturi nozzle is a brass tube with four through holes in its narrowest part that open into an outer circular groove. The undercut coincides with the through holes that are in both covers of the water part. Through these holes, 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 gland.

The automatic water flow works as follows. With the passage of water 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 pressure difference appears under and above the membrane, which bends upward and pushes the plate with the stem. The stem of the water part, resting against the stem of the gas part, lifts the valve from the seat. As a result, the gas passage to the main burner opens. When the water flow stops, the pressure under and above the membrane equalizes. The conical spring presses on the valve and presses it against the seat, the gas supply to the main burner stops.

The solenoid valve (Fig. 76) serves to turn off the gas supply when the igniter goes out.

The voltage generated during the heating of the thermocouple is supplied to the winding of the core of the electromagnet. In this case, the core holds the anchor, and with it the valve, in the open position. The time during which the thermocouple generates the necessary thermo-EMF and the electromagnetic valve begins 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 anchor, under the action of the spring the valve closes. The gas supply to both the igniter and the main burner is stopped.

Draft automation turns off the gas supply to the main burner and igniter in case of violation of draft in the chimney, it works on the principle of "gas removal from the igniter". Traction automation consists of a tee, which is attached to the gas part of the block valve, a tube to the draft 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 fitting, reinforced with two nuts. The top nut is also a seat for a plug that shuts off the gas outlet from the fitting. A tube 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, the 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 up and opens the gas outlet from the fitting. The gas supply to the igniter decreases sharply, the flame ceases to heat the thermocouple normally. It cools down and stops producing voltage. As a result, the solenoid valve closes.

Repair and service

The main malfunctions of the HSV-23 column include:

1. The main burner does not light up:

little water pressure;
deformation or rupture of the membrane - replace the membrane;
clogged venturi nozzle - clean the nozzle;
the stem came off the plate - replace the stem with the plate;
skew of the gas part in relation to the water part - align with three screws;
the stem does not move well in the stuffing box - lubricate the stem and check the tightness of the nut. If the nut is loosened more than necessary, water may leak from under the stuffing box.

2. When the water intake is stopped, the main burner does not go out:

dirt has got under the safety valve - clean the seat and valve;
weakened cone spring - replace the spring;
the stem does not move well in the stuffing box - lubricate the stem and check the tightness of the nut. In the presence of an igniter flame, the solenoid valve is not held in the open position:

3. Violation electrical circuit between thermocouple and electromagnet (open or short circuit). The following reasons are possible:

lack of contact between the terminals of the thermocouple and the electromagnet - clean the terminals with sandpaper;
violation of the insulation of the copper wire of the thermocouple and its short circuit with the tube - in this case, the thermocouple is replaced;
violation of the insulation of the turns of the electromagnet coil, shorting them to each other or to the core - in this case, the valve is replaced;
violation of the magnetic circuit between the armature and the core of the electromagnet coil due to oxidation, dirt, grease, etc. It is necessary to clean the surfaces with a piece of coarse cloth. Cleaning of surfaces with needle files, sandpaper, etc. is not allowed.

4. Insufficient heating of the thermocouple:

the working end of the thermocouple is smoky - remove soot from the hot junction of the thermocouple;
the igniter nozzle is clogged - clean the nozzle;
the thermocouple is incorrectly set relative to the igniter - install the thermocouple relative to the igniter so as to provide sufficient heating.

These water heaters (Table 133) (GOST 19910-74) are installed mainly in gasified residential buildings equipped with running water, but not having a centralized hot water supply. They provide fast (within 2 minutes) heating of water (up to a temperature of 45 ° C), continuously coming from the water supply.
According to the equipment of automatic and control devices, the devices are divided into two classes.

Table 133

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.

Top-class devices (B) have automatic safety and regulation devices that provide:

b) shutdown of the main burner in the absence of vacuum in
Chimney (apparatus type 1);
c) regulation of water flow;
d) regulation of the flow or pressure of gas (only natural).
All devices are provided with an externally controlled ignition device, and type 2 devices with an additional temperature selector.
Apparatuses of the first class (P) are equipped with automatic ignition devices that provide:
a) gas access to the main burner only in the presence of a pilot flame and water flow;
b) shutdown of the main burner in the absence of vacuum in the chimney (apparatus type 1).
The pressure of the heated water at the inlet is 0.05-0.6 MPa (0.5-6 kgf / cm²).
Appliances must have gas and water filters.
The devices are connected to water and gas pipelines using union nuts or couplings with lock nuts.
Symbol of a water heater with a rated heat load of 21 kW (18 thousand kcal / h) with the removal of combustion products into the 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); HSV-18 and HSV-25 (Table 134).

Rice. 128. Flowing gas water heater HSV-18
1 - cold water pipe; 2 - gas valve; 3 - ignition burner; 4-gas outlet device; 5 - thermocouple; 6 - solenoid valve; 7 - gas pipeline; 8 - hot water pipe; 9 - thrust sensor; 10 - heat exchanger; 11- main burner; 12 - water-gas block with a nozzle

Table 134

Indicators	Water heater model
Indicators	HSV-8	HSV-18	HSV-25
Thermal load, kW (kcal/h) Heat output, kW (kcal/h) Permissible 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 ° C, l Diameter of fittings for water and gas, mm Diameter of a branch pipe for removal of products of combustion, mm
Overall dimensions, mm;

Table 135. TECHNICAL DATA OF GAS WATER HEATERS

Indicators	Water heater model
Indicators	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°C	7,5	6	6	4,8
Diameter of a branch pipe for removal of products of combustion, mm	130	125	125	128
Connecting fitting diameter 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

Main technical characteristics of HSV-23:

thermal power - 23 kW;
productivity when heated to 45 ° C - 6 l / min;
minimum water pressure - 0.5 bar:
maximum water pressure - 6 bar.

VPG-23 consists of a gas outlet, a heat exchanger, a main burner, a block valve and an electromagnetic valve (Fig. 74).

The solenoid valve (Fig. 76) serves to turn off the gas supply when the igniter goes out.

Repair and service

The main malfunctions of the HSV-23 column include:

1. The main burner does not light up:

little water pressure;
deformation or rupture of the membrane - replace the membrane;
clogged venturi nozzle - clean the nozzle;
the stem came off the plate - replace the stem with the plate;
skew of the gas part in relation to the water part - align with three screws;
the stem does not move well in the stuffing box - lubricate the stem and check the tightness of the nut. If the nut is loosened more than necessary, water may leak from under the stuffing box.

2. When the water intake is stopped, the main burner does not go out:

dirt has got under the safety valve - clean the seat and valve;
weakened cone spring - replace the spring;
the stem does not move well in the stuffing box - lubricate the stem and check the tightness of the nut. In the presence of an igniter flame, the solenoid valve is not held in the open position:

3. Violation of the electrical circuit between the thermocouple and the electromagnet (open or short circuit). The following reasons are possible:

lack of contact between the terminals of the thermocouple and the electromagnet - clean the terminals with sandpaper;
violation of the insulation of the copper wire of the thermocouple and its short circuit with the tube - in this case, the thermocouple is replaced;
violation of the insulation of the turns of the electromagnet coil, shorting them to each other or to the core - in this case, the valve is replaced;
violation of the magnetic circuit between the armature and the core of the electromagnet coil due to oxidation, dirt, grease, etc. It is necessary to clean the surfaces with a piece of coarse cloth. Cleaning of surfaces with needle files, sandpaper, etc. is not allowed.

4. Insufficient heating of the thermocouple:

the working end of the thermocouple is smoky - remove soot from the hot junction of the thermocouple;
the igniter nozzle is clogged - clean the nozzle;
the thermocouple is incorrectly set relative to the igniter - install the thermocouple relative to the igniter so as to provide sufficient heating.

Geyser vpg 23 specifications. Gas instantaneous water heaters. Review questions

The gas column electron vpg 23 ignites poorly.

The gas column electron vpg 23 ignites poorly.

The gas column electron vpg 23 ignites poorly.

The gas column electron vpg 23 ignites poorly.

The gas column electron vpg 23 ignites poorly.

The gas column electron vpg 23 ignites poorly.

The gas column electron vpg 23 ignites poorly.

The gas column electron vpg 23 ignites poorly.

Repair and service

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