Protective valve from overheating of a solid fuel boiler

What is it. A traction regulator for solid fuel boilers in autonomous heating systems

In order for solid fuel to light up and continues to burn (whether it be firewood, woodworking, coal or then), oxygen must be served in the furnace chamber. To obtain the desired temperature of the coolant in solid fuel boilers, more and more complex automation is used using fans and smoke exhausters. However, there is a compact mechanical device. A traction regulator that with quite acceptable accuracy supports a given temperature in the heating system without using electricity.

The control of the boiler damper or the door blew the stove by the operator (stoker) changed the amount of oxygen in the furnace and changed the temperature of the coolant in one direction or another (due to more or less intense combustion). The principle of operation of a mechanical device capable of performing this work is also quite simple.

This is how the standard mechanical tag control regulator looks like. There are also side models.

Such a thermostat consists of the following details:

  • A sleeve with a thermal.Sensitive element;
  • Mechanical temperature change amplifier;
  • Calibrated handle setting temperature;
  • A spring, the compression of which will determine the level of task;
  • A lever with a chain controls the ash door (blown).

Installation of the temperature of the coolant is set by the handle of the regulator, which compresses the spring with the right force. The difference between it and the power of the cold thermal.Sensitive element is large, so the lever mechanism opens the shutter to a certain large angle. A lot of air enters the furnace, intensive burning occurs. As heated, the linear dimensions of the sensitive element increase, the difference in a given and operating temperature becomes equal to zero. The ash door, smoothly dropping, occupies a position corresponding to a given one and further responds to the deviation of the temperature.

The function of the traction regulator includes the following tasks:

  • Stable maintenance of a given temperature of the coolant in the regulation range, avoiding its boiling;
  • The control of the power and efficiency of the boiler by supplying oxygen, achieving complete fuel burning, which reduces its consumption.

Important. Not all solid fuel units are equipped with a mechanical traction regulator initially, so the user has a temptation to use a safety valve as a traction regulator that drops excess pressure when boiling the coolant. Such savings will result in the fact that if a real emergency arises, it will work late or will not work at all, which will entail serious repair at least.

Watts protective valve from overheating of a solid fuel boiler STS 20/200, 02.32.220

The protective valve from overheating of the solid.Fuel boiler Watts STS 20/200 is installed in solid fuel boilers equipped with a boiler for heating water and serves to prevent them from overheating (in accordance with DIN 4751/2) with a system power not higher than 93 kW/kcal/kcal/kcal/kcal/ hour). It works as follows: when a hot water supply is reached in a temperature of 95 ° C, the protective valve automatically opens, as a result of which the drain of hot water begins and a set of cold. During the functioning of the STS 20 protective valve, the boiler temperature does not increase more than 110 ° C, which allows you to maintain the entire system from overheating. High product quality is guaranteed by the famous German manufacturer Watts Industries Deutschland GmbH, conducting successful activities in the heating systems market for more than 40 years.

How to place an order?

You can clarify any details by phone and place an order through our managers by phone. Call the sales department by number 7 (495) 777-67-22, our experts will definitely help with the choice and will issue an order for you. Fast order the easiest way to order goods. Order in one click! Next to the price of the product, click the quick order button, enter your phone number and click the order and your order will be placed. In a few minutes, the manager will call you back to clarify the details of the delivery of goods. Order through the basket if you want to purchase several goods at once. Use the classic basket. Near the price of the product, click the Buy button. Do this for all the goods you want to purchase. After that, go to the basket by pressing the basket button in the right corner of the site. In the basket, check the composition of the order and its amount. After that, pour the fields of the form for communication, select the delivery method and press the order, and your order will be placed. In a few minutes, the manager will call you back to clarify the details of the delivery of goods. Order by mail by e.Mail info@tavago.Ru you can send a list of goods you are interested in. Even if you did not find the goods on our site. We will do it for you. Send specifications, layouts, calculations. We consider all letters from our customers.

How to get a product?

Delivery in Moscow and MO you can be confident: our own delivery service will bring goods with all the necessary documents directly to your home. Delivery within MKAD. 500, per MKAD. 40/kilometer. Delivery in Russia we will send for you the goods to anywhere in Russia through the transport company you have chosen. The cost of such delivery depends on the region, dimensions and weight of the goods. You can always clarify detailed information about delivery in Russia with our managers. Shipment night is our office in the Business Park Rumyantsevo on the Kiev highway. Only 500 meters from MKAD, free parking, walking distance of the metro. You can pay for the goods in the office, and pick up in the warehouse. Before arrival, call us to clarify the availability of goods and an order for a pass to the business park.

How to pay for the goods?

Cash courier upon receipt of the order, pay the product in cashier to the courier. Cashless calculation for legal entities We offer cashless payments.

All information about the goods is taken from open sources and is not a public offer.

Protective valve from overheating of a solid fuel boiler Watts STS 20, 02.32.120

In our online store you can buy a protective valve from overheating of a solid fuel boiler Watts STS 20, 02.32.120 at a bargain price 6920, as well as receive consultation of specialists and issue delivery. A wide selection of description, characteristics, photographs and reviews will help you make a purchase.

Want to buy right now? Place an order on the site or just call us 7 (495) 777-67-22. We will deliver your product on time and in full configuration with all documents.

How to place an order?

You can clarify any details by phone and place an order through our managers by phone. Call the sales department by number 7 (495) 777-67-22, our experts will definitely help with the choice and will issue an order for you. Fast order the easiest way to order goods. Order in one click! Next to the price of the product, click the quick order button, enter your phone number and click the order and your order will be placed. In a few minutes, the manager will call you back to clarify the details of the delivery of goods. Order through the basket if you want to purchase several goods at once. Use the classic basket. Near the price of the product, click the Buy button. Do this for all the goods you want to purchase. After that, go to the basket by pressing the basket button in the right corner of the site. In the basket, check the composition of the order and its amount. After that, pour the fields of the form for communication, select the delivery method and press the order, and your order will be placed. In a few minutes, the manager will call you back to clarify the details of the delivery of goods. Order by mail by e.Mail info@tavago.Ru you can send a list of goods you are interested in. Even if you did not find the goods on our site. We will do it for you. Send specifications, layouts, calculations. We consider all letters from our customers.

How to get a product?

Delivery in Moscow and MO you can be confident: our own delivery service will bring goods with all the necessary documents directly to your home. Delivery within MKAD. 500, per MKAD. 40/kilometer. Delivery in Russia we will send for you the goods to anywhere in Russia through the transport company you have chosen. The cost of such delivery depends on the region, dimensions and weight of the goods. You can always clarify detailed information about delivery in Russia with our managers. Shipment night is our office in the Business Park Rumyantsevo on the Kiev highway. Only 500 meters from MKAD, free parking, walking distance of the metro. You can pay for the goods in the office, and pick up in the warehouse. Before arrival, call us to clarify the availability of goods and an order for a pass to the business park.

How to pay for the goods?

Cash courier upon receipt of the order, pay the product in cashier to the courier. Cashless calculation for legal entities We offer cashless payments.

All information about the goods is taken from open sources and is not a public offer.

Boiler is leaking can you fix it

Assessing the technological capabilities of modern solid fuel boilers, one should think not only about its operating capacity, but also in advance to install the installation of the elements of protection of the entire system. Overheating of the boiler is a frequent and well.Familiar phenomenon for the inhabitants of private houses. To use the available means to ensure protection will not only avoid freelance situations, but also extend the operation of heating units. Each will choose a means and method of protection. It will be enough to install an electric generator, which, together with the UPS, will not allow the circulation of water in the system to stop. Other owners of a private house, on the contrary, will need to install a bypass or equip a spare, emergency circuit for security purposes.

According to experts, the installation of buffer capacity or bypass installation are the most effective ways to protect the heating system from overheating.

Note: In the USA and in Europe, the operation of solid fuel vehicles without buffer capacity is prohibited.

Choosing pipes and strapping patterns

At the design stage, it is important to correctly choose pipes according to the parameters and materials. So polymer options are more susceptible to severe heating. For this, copper or steel is used.

Polypropylene products are inserted into the distribution collector. There should be a metal pipe in the return area. This is the site separating the pipe of the apparatus and a three.Way valve. The temperature indicator on the polymer product will work for overheating late.

Also, the heating circuit circuit should be correctly executed. There are several variations. And any of them serves as an obligatory security measure, both the heating network and the whole house.

Когда правильно сделана обвязка твердотопливного котла, она обеспечит комфорт в помещении. In addition, the fuel will be more economical.

First: closed. The circulation is natural.

An isolated RB with a membrane is connected here. To install it, only a check valve pipe is needed.

Second: pumping circulation. This scheme moves the heat carrier over the network in a natural way. But first of all, this binding is required by an electric boiler to protect the device from overheating.

protective, valve, overheating, solid, fuel, boiler

And it works safe thanks to the pump and thermal attewer. They are connected through an electric network.

Third: Scheme with a buffer tank. This is a popular protection of a solid fuel boiler from overheating.

Here, the input and output zones of the device are connected with the help of it, and from it they join the heating network.

The buffer container can be filled with the coolant. If the furnace compartment works at all power, the buffer heats up. With complete combustion of fuel, heat goes through the heating network. To control the temperature, you need to put a pump and TC.

Fourth: Scheme with TK. The coolant is supplied to the boiler with a specific temperature. This is achieved by a combination of a number of devices.

The controller contains remote indicators to control the pump. A set of safety is found above the boiler. Through it heated water follows the heating network. The liquid comes from it cold, heats up in the boiler, and returns to the system.

Fifth: with an indirect heating boiler.

Water heats up in the boiler and is synchronously directed both into the radiator and to the boiler. The device contour is connected to the boiler heat exchanger.

The boiler here is a tank with an internal heating tube.

Sixth: Collector. For water circulation, a pump is used through pipes. Collectors join the heating network. They are connected to two nozzles: the opposite and the supplier.

Seventh: with that. This is a buffer reservoir that accumulates and retains the heat formed by the boiler.

Installation of the boiler room, connecting the boiler. Do not make errors

Installation of the boiler room independently and interesting and beneficial. But when connecting the boiler and arranging the boiler room, shortcomings always appear. Some significantly affect the performance of the heating system. Others spoil only aesthetics.

In order not to inherit the circumstances that occurred with one good person who, in great frost, knee-deep in ice water, with plumbing keys to the advantage, tried something there

It is better to try to install, connect the boiler according to the rules, equip the boiler room with the least shortcomings. Otherwise it will not work, or will constantly “spoil life” and demand alteration.

In most cases, when creating a boiler room and connecting a boiler with your own hands, polypropylene is used. It is very easy to mount it with low.Temperature welding, and it is extremely cheap. But its main drawback is the complete absence of a guarantee for the quality of installation and the inability to check the quality of the joints. What needs to be done to equip the boiler room correctly. Read below.

The filter in the system is required

Frequent but gross error-there is no filter-gryazer in the system. The coolant to the boiler from the return should enter the filter. If a precipitate, particles get into the heat exchanger, then it sins there, changing the characteristics of the boiler and making it unusable. A small detail is a filter on which you cannot save.

It is better not to use polypropylene cranes

Polypropylene taps are cheap, but often flowing, not reliable. It is better to put ordinary metal. But if you want to save, or the crane will be used infrequently, then the polypropylene crane must be installed (welded) with a sufficient supply of pipes so that it can be cut out and welded to another.

You can not plant a crane directly on the fitting. Otherwise, you will have to cut together with the fitting and scream half a system If you solder right next to the collector, you will have to throw away the entire collector, for example. When installing soldered cranes, it is better to provide in advance how to replace it. In the lower photo, the system is more reliable at times because of the cranes.

Place the boiler correctly

Any equipment in the boiler room should be located with the abandonment of the necessary gaps. So that there is enough space for its maintenance. The boiler should be at a sufficient distance from the wall and from the boiler, from any equipment, so that it can be conveniently maintained. The distance to the boiler from the surface of the finishing floor, the standard is 145 cm, which corresponds to the height of the kitchen shelves.

Install expansion tanks and emergency valves

The liquid expands when heated, which is compensated by air compression in the expansion tank. About expansion tanks

It is important not to forget to install an expansion tank and an emergency valve, not only in the heating system, but also in the secondary loop of the boiler. To supply hot water. It’s not possible that the accident is possible, something will break.

A simple boiler room scheme is better

The scheme with the same functions and similar reliability can be collected with the difference in price at times. For example.

For a house with an area of ​​200 m sq., With an indirect heating boiler with automated boilers, which work only alternately (gas and backup electric), with radiator and floor systems, the boiler room is assembled even without a single pump and mixing unit.

Just boilers with disconnecting taps and filters on the return are connected to tees, and then branches for 3 consumers. Boiler, warm floor, radiators go from the submission and return.

Installation of the thermostatic traction regulator

Owners of solid fuel boilers, especially in rural areas, where electricity shutdown are not uncommon, appreciated their advantages. The boiler is not demanding on fuel, energy.Dependent, inexpensive. All modern solid fuel boilers are equipped with a thermostatic traction regulator that prevents the boiler.

When the set temperature reaches the traction, the thrust regulator lowers the shade of the blowing, preventing air access to the combustion zone. Fuel begins to smolder. Heat release is reduced.

The traction regulator does not require maintenance. In case of failure, it is easily replaced.

But such a system has one significant drawback, leading to the loss of the boiler power. As you know, the efficiency of a solid fuel boiler reaches the maximum value only in the active combustion mode. In smoothing mode, this indicator is almost doubled.

Calculation of throughput

Just choose a three.Way valve according to the diameter of the heating unit pipe or the supply pipeline will not work. The fact is that in the process of automatic regulation, the element creates alternating hydraulic resistance, which must overcome the circulation pump in order to ensure the required flow rate of the coolant. By calculating the valve is selected in such a way as to skip the desired volume of water at various positions of the rod.

The main constructive characteristic of any 3-year valve is conditional throughput indicated by the letter KVS and expressed in m³/h. This value, indicated in the passport of the product, reflects the amount of cold coolant passing through a completely open valve in 1 hour. In this case, the pressure drop in the site to the regulator and after it is 1 bar.

Example. If through a three.Way tap with kvs = 1.6 m³/h to skip just such a volume of water within an hour, then the pressure drop (hydraulic resistance) will be 1 bar or 10 m of water column. This is too much for a private house heating system, therefore, when calculating, a real pressure drop is accepted. 0.15-0.2 bar (1.5-2 m waters. Art.).

To select the control valve by throughput, you first need to determine the flow rate of the coolant walking along the adjustable line. This formula is used:

  • G. The desired water consumption, m³/h;
  • Q. Thermal load on the heating branch, kW;
  • ∆t. The difference in water temperature at the supply and in the return, is usually taken equal to 20 ° C, and in warm floors. 10 ° C.
protective, valve, overheating, solid, fuel, boiler

Example. A 100 m² house is planned to be heated with floor circuits, which should provide heat transfer 10 kW. Then you need to submit g = 0 to the distribution collector.86 x 10 /10 = 0.86 m³/h coolant.

The next step we calculate the real coefficient K bandwidth of the mixing valve, taking into account the pressure difference on it 0.2 bar according to the formula:

For the same example, the value of K will be 0.86 / √0.2 = 0.86 /0.45 = 1.9 m³/h. Next, we open the catalog of the selected reinforcement manufacturer and select a three.Way crane from the line, whose KVS is equal or more than the resulting value. Take the famous Danfoss brand (DANFOSS) and select a valve with a dn15 and kvs = 2 pipe from a VRB3 series of products.5 m³/h. The previous one in the row is 1.6 m³/h, which is clearly not enough in our case.

For reference. As a rule, for solid fuel boilers and warm floors arranged in private houses, three.Way valves with conditional passage DN15. DN25 are used, not more. But their throughput must be calculated. In addition, after selecting the element, it is advisable to check the speed of the flowing coolant, as is described in the next

The basic principle of protecting the boiler from condensate

To protect the solid fuel boiler from the formation of condensate, it is necessary to exclude the situation in which this process is possible. To do this, you cannot allow cold coolant to enter the boiler. The return temperature should be less than the supply temperature of 20 degrees. In this case, the supply temperature should be at least 60 s.

The easiest way is to heated in a boiler of a small amount of coolant to a nominal temperature, creating a small heating circuit for its movement and a gradual subtle to hot water of the rest of the cold coolant.

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The idea is simple, but it can be realized in various ways. For example, some manufacturers offer to purchase a ready.Made mixing unit, the cost of which can be 25,000

And more. For example, FAR (Italy) offers similar equipment for 28500. And the company sells the mixing unit for25500.

A more economical, but at the same time no less effective way to protect a solid fuel boiler from condensate is to regulate the temperature of the coolant arriving to the boiler using a thermostatic valve with a thermal cutting.

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