We power the water heated floor from a gas boiler - an economical system. Efficient boiler for water heated floors Low temperature gas boilers for heated floors

The hydraulic arrow has several exits located at different height levels:

• The topmost outlet is the supply to the main heating system. Thus, radiators are consumers of water with the highest temperature.
• The lower outlets release coolant at a lower temperature; it is sent to the “warm floors”.
• The return lines of “warm floors” and heating radiators cut into the lowest point of the hydraulic arrow, at the same level the cooled water is taken to the condensing boiler.
• To ensure more accurate temperature control, each circuit of “warm floors” is equipped with its own circulation pump, which automatically regulates the speed of the coolant.

The figure shows in detail a heating circuit consisting of several heating circuits using a hydraulic gun and two collectors.

The collectors are installed after the hydraulic switch on the supply and before it on the “return”, if you look in the direction of movement of the coolant.

The most the best option to provide heating with a “warm floor” there will be a gas double-circuit boiler with forced draft in a suspended version.

This model is well suited for a medium-sized private house and even in an apartment. All that remains is to ensure the removal of combustion products. Coaxial pipe for a gas boiler with a closed firebox replaces the traditional one brick flue. Therefore, installation of the unit is possible even in the absence of a special flue.

Boiler for warm water floor: selection features and connection diagram

In this article we will talk about a boiler for a warm water floor - gas, electric and solid fuel. We will look at their advantages and disadvantages, as well as how to choose and install (installation) correctly.

Today, water-based heated floors are a very popular type of residential heating. Such a home heating system has a lot of advantages: low energy consumption, the ability to control the temperature, etc. In order for a water-heated floor to work with maximum productivity, you need to choose the right boiler for it. The main criteria that should be followed when choosing a boiler are efficiency, ease of use, heating cost, as well as the degree of installation complexity and connection requirements.

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Arrangement of the heating system

For such a heating system, you can choose a boiler that runs on any fuel. However, the unit must comply with one important condition: its control system must be automatic.

Boilers are classified according to the type of fuel on which they operate: solid fuel (firewood), gas (gas), electric (electricity), liquid fuel (diesel, waste oil).

The most profitable and productive for a warm hollow are:

• electric boilers;
• gas boilers.

Electric boiler for heated floors

An electric boiler is a device that heats the coolant using electricity. The operation of such units is characterized by productivity and efficiency. Efficiency can reach 99%.

Electric boiler operation diagram

But despite the high efficiency and performance of electric boilers, their use involves high costs, since electricity is an expensive fuel.

An electric heating boiler is constructed of a tank containing coolant and heating elements. In addition, the unit is equipped security team, consisting of a pressure sensor and safety valve. The boiler has a pump that circulates the coolant, an air vent and an expansion tank.

The principle of heating water for heated water floors is based on the following: water enters the boiler and begins to warm up. When the desired temperature is reached, the coolant moves towards the warm water floor.

The operating principle of floor-standing and electric boilers wall-mounted identical.

Advantages and disadvantages

Let us note the main advantages and disadvantages of using electric boilers for heated floors:

• high efficiency;
• reliability;
• absence of combustion products;
• work autonomy, human presence is not expected;
• There are usually no difficulties with installation and further use.

A number of difficulties may arise when connecting the boiler to the network, since it will require separate electrical wiring.

Flaws:

• energy dependence;
• high price of electricity.

An electric unit for a warm water floor is more suitable for rooms that are not very large in size and with good thermal insulation, then their operation will be as economical as possible.

Installation and selection

Warm floors and an electric boiler are simply connected. Working temperature for many models it starts at 25°, so the strapping does not require high costs. You will just need to acquire one, and then only in a situation where several circuits will be connected to one boiler. As already noted, there are no combustion products in the operation of such units, so you can install an electric boiler anywhere in your home.

When choosing an electric boiler for a warm water floor, you need to be guided by the following criteria:

• power: performance heating device(calculated based on the size of the heated room);
• protection from air humidity;
• degree of automation of boiler operation;
• connection to a 220 V or 380 V network;
• design;
• manufacturer.

Connection diagram for boiler and warm water floor

Here are some manufacturers of electric boilers.

Gas boiler for heated floors

A gas boiler is a device that heats the coolant by burning gas. Since gas is an accessible and inexpensive fuel, a “warm water floor” heating system connected to a gas boiler is very profitable and efficient.

Can be installed in gas boilers. In units with closed chamber combustion - forced ventilation, and this option has a rather complex structure.

An example of a Protherm Panther KTV gas boiler

They also differ in the presence of a heat exchanger. If you intend to use the boiler to heat water, then you need to build a heat exchanger into it.

If the device is not equipped, then the water is heated by the same chamber as the coolant for floor heating. Let's consider the operating principle of such a unit:

1. Cold water moves along the rightmost lower pipe, where it is also located security group.
2. Then posted circulation pump, in front of it there is an expansion tank tube.
3. There is a temperature sensor on the tube.
4. The coolant then moves to heating element and enters the heating system of the warm water floor.

In the center of the boiler there is a gas fitting with its own safety unit, which controls the flame, gas pressure, and exhaust gases.

Advantages and disadvantages

A heating system, like a warm water floor from a gas boiler, has the following advantages:

• cheap fuel;
• high efficiency;
• automated control system;
• environmental friendliness.

For the normal functioning of a traditional gas boiler, the temperature must be at least 60°, while for a condensing gas boiler it should not be higher than 40°.

• it is necessary to equip a system for removing combustion products outside the premises;
• the equipment itself is expensive;
• The boiler must be equipped with auxiliary elements: gas analyzers, gas pressure sensors;
• fire hazard.

Installation and selection

Installation of a gas boiler for heated floors is quite simple:

1. It is necessary to install between the supply and return pipelines.
2. If the circulation is carried out at a low speed, then the water will be stratified by temperature, and it will not be difficult to select the supply for the heated floor from the cold part, and the hot water, in turn, will flow into the boiler.
3. By installing a simple thermal control circuit, it will not be difficult to find out an arbitrary temperature of the coolant, which is practically not tied to the return flow in the boiler.

If you decide to use a gas boiler for heated floors in your home, then when choosing such a unit, you should pay attention to the following indicators:

• combustion chamber type: open\closed;
• installation type: wall\floor;
• power;
• design;
• manufacturer.

The leader among manufacturers of gas boilers for water floors is Viessman. The products of this company are characterized by strength, durability and high quality. Also positive reviews also has equipment from Buderus.

Solid fuel boiler for heated floors

Solid fuel boilers require constant attention and maintenance in their operation, and especially many difficulties arise in compatibility with heated floors. The exception is, but they still require more attention compared to boilers running on gas and electricity.

In operation of solid fuel heating devices There are many difficulties:

1. A special place near the boiler is required to store fuel.
2. The boiler needs to be heated at least once a day.
3. It is necessary to carry out regular cleaning of the chimney.

To connect a solid fuel boiler, you need to install three-way valves. Their number should be equal to the number of contours. Thanks to the mixing unit that these valves form, the heated water will be cooled.

Solid fuel boiler with heat accumulator

When connecting a solid fuel boiler to a water floor, be sure to take into account that water enters the pipes under the action of a pump that is powered by an electrical network. If there is a power outage, the movement of the coolant will be stopped, but since the boiler will continue to function, the water will begin to heat up and its temperature will reach 100°C. Thus, due to the fact that units operating on solid fuel do not have automation, the water will overheat.

To avoid such unpleasant consequences, can be installed. This device is a container, the volume of which is calculated based on the power of the boiler - 40 liters per 1 kW. The thermal accumulator is connected to the underfloor heating system. The heated water will initially flow into this tank, and after it has cooled down, it will flow into the pipes of the water-heated floor.

In this article we are going to discuss heat sources for low temperature heating. Is an electric boiler suitable for underfloor heating? Is it difficult to connect a solid fuel boiler to a pipe laid in a screed?

We will try to find answers to these and some other questions.

Warm floors are convenient and practical. However, like any heating system, it needs a heat source.

What's the difference

First, let's define how a warm floor for an apartment or house is fundamentally different from radiator heating from the point of view of choosing a heat source.

You won't have to look for the answer for long. Touch the heating radiator in winter. Excuse me, what did you say? Ah, I heard it... Now imagine that the floor has the same temperature.

So, let’s formulate the key difference: in a heated floor system, the coolant temperature should be limited to approximately 40 degrees.
Exceeding this value will make staying in the room extremely uncomfortable.

Now let's figure out how good boilers using various sources thermal energy.

Of course, we will evaluate not only the ability to maintain the desired temperature, but also a number of equally important parameters:

1. Economical. It is clear that the cost per kilowatt-hour of heat must be reasonable.
2. Ease of use. It is desirable that the boiler does not require constant attention from the owner.
3. Complexity of installation and wiring requirements.

Electricity

Economical

From this point of view electric boilers for heated floors - worst solution of the possible. To produce a kilowatt-hour of heat, they require exactly one kilowatt-hour of electricity. And its price in most of the country is close to 4 rubles.

Let's do a simple calculation. Let's assume that the average daily heating requirement of a house is 10 kilowatts. In this case, expenses per day at a tariff of 3.5 rubles/kWh will be 10x24x3.5 = 840 rubles. For heating it’s an exorbitant amount, isn’t it?

Let us clarify: an electric boiler for heated floors can be much cheaper if you have a two-tariff meter installed.
Thermal inertia allows the use full power boiler only at night, when electricity is cheaper.

Ease of use

But from this point of view, the electric boiler completely rehabilitates itself: it does not require maintenance at all. It is enough to set the desired temperature of the coolant or, if there is a remote temperature sensor, air - and the device will continue to operate in completely autonomous mode. Programmable boilers are able to regulate the temperature within a daily or weekly schedule.

Installation

Warm floors and electric boilers work together without any problems. At all. The operating temperature of the coolant for most models starts from 25 degrees, so no expensive piping is required. All you need is a collector, and only in the case when several circuits are connected to one boiler.

A pleasant bonus is that there is no need to remove combustion products. Thanks to this feature, the electric heating device can be mounted anywhere in the house, without being tied to ventilation ducts or external walls.

Gas

Economical

A warm floor from a gas boiler is, in contrast to electricity, the most economical option heating. Rational heat distribution, characteristic of low-temperature heating systems, is superimposed on minimum cost kilowatt-hour of heat produced by combustion natural gas.

Healthy: Efficiency of gas boilers varies from 60% for the oldest models, produced in the 70-80s, to ... 110% for modern condensing boilers.
Of course, efficiency above 100% is nothing more than a marketing ploy: 100% is taken to be the so-called lower calorific value, that is, the amount of energy released directly during gas combustion.
Additional energy is obtained as a result of condensation of combustion products.

Ease of use

In terms of convenience and autonomy, gas boilers for heated floors are practically not inferior to electric ones. Devices with electronic ignition are capable of controlling the temperature using a thermostat, igniting and extinguishing the burner depending on the heat demand, and forcibly removing combustion products.

Boilers with piezo ignition, however, are only capable of automatically maintaining a set coolant temperature and turning off the gas supply when the pilot burner flame goes out. The flame has to be rekindled manually. However, the limited functionality of this class of devices is compensated by their complete energy independence.

The photo shows a gas boiler with piezo ignition.

Installation

Condensing gas boilers for heated floors are almost ideal: their operation requires a return temperature of no higher than 40 degrees.

How to dispose of excessively high supply temperatures?

1. A very popular solution is to use a heated floor as a return for the contour of a classic convection heating with conventional aluminum radiators.
2. In addition, the underfloor heating manifold can be equipped with a mixing unit. Outwardly, it strongly resembles an elevator unit and uses the same operating scheme - it mixes part of the water from the return pipeline into the supply.

A traditional gas boiler, however, requires a fairly high supply temperature - at least 60 degrees. The limitation is due to the fact that at a lower return temperature, combustion products will begin to condense on the heat exchanger, which is undesirable.

They are quite aggressive, and the heat exchanger material, unlike a condensing boiler, is much less protected from corrosion. Is it possible to solve this problem when installing heating with your own hands?

The instructions are quite simple, but will require additional costs.

1. A hydraulic arrow is installed between the supply and return pipelines. In its simplest form, it is a vertical tank with several outlets at different levels.
2. Since the water in the tank at a low circulation rate will inevitably begin to stratify in temperature, it is easy to select the supply for the heated floor from its lower, colder part. Hotter water from the pipes located above will flow into the boiler.
3. Having installed the simplest thermal control circuit that controls circulation pump in a heated floor circuit, it is easy to obtain an arbitrary temperature of the coolant, practically unrelated to the return flow in the boiler.

Solid fuel

Economical

From this point of view, the warm floor from a solid fuel boiler is second only to main gas. Alas, in the 21st century it is still profitable to heat with coal or wood. Electricity, diesel fuel and liquefied gas are much more expensive.

Ease of use

We put a bold minus.

List of problems solid fuel heating quite extensive:

• The frequency of kindling and, accordingly, loading of fuel is at least once a day.
• The ash has to be removed manually.
• The fuel supply must be stored close to the boiler, and it must be protected from precipitation.
• The chimney needs periodic cleaning: combustion products will settle on its walls.
• Finally, in most designs, when thermal power is limited, the efficiency drops catastrophically.

Horror, horror, horror. But sometimes you have to put up with it - main gas is not available everywhere.

Installation

It is clear that in this case the heated floor cannot be directly powered by the heating boiler. The temperature of the coolant will be too high, and the problem of uneven heating throughout the day does not add enthusiasm.

The solution may be a scheme similar to the one above: the connection to the heated floor boiler is carried out through a massive container - a heat accumulator. In fact, two independent circuits with different coolant temperatures are formed.

Please note: as a bonus we get a constant temperature of the heating circuit.
The boiler heats the water in the tank at rated power, then the accumulated heat is transferred to the floor for a long time.

Schematic diagram of the use of a container - a heat accumulator.

Conclusion

It seems that the leader in the combination of efficiency and functionality is obvious. Condensing gas boiler - optimal solution for low temperature heating. As always, the video in this article will formulate the topic clearly, thereby more fully, watch. Good luck!

In contact with

Classmates

Heating system frame house has two main requirements: efficiency and economy.

One more thing can be added to them, no less important requirement— safety, especially from fire positions. If all of them are fulfilled, then the heating issue can be considered resolved with the most successful results.

And, nevertheless, one more goal can be named, a maximum program: heating autonomy, independence from networks or suppliers. To some extent, this situation can be achieved by using heating systems operating on a coolant -. From the point of view of economy and efficiency, heated floors leave radiator systems far behind, which makes it possible to distinguish it as the most attractive type of heating for a frame house.

However, you can simultaneously heat your home with heated floors and radiators.

- this is a dense (10-30 cm between adjacent pipes) mesh or, more precisely, a spiral-shaped system of thin (15-20 mm) pipes located in the thickness concrete screed or without it under the floor covering. The coolant circulating through them transfers heat to the floor surface, which, in turn, radiates it into inner space rooms.

Density and big square placement (or contours) of a warm floor allows you to do without achieving high temperatures coolant - 45-50 degrees is enough. The uniformity of pipe laying makes the heating dense, there are no colder areas. The warm floor is comfortable for contact and pleasant to walk on barefoot.

This convenience results in the need for precise temperature control, since the radiation power is such that an increase or decrease of several degrees is perceived as a significant change in the operating mode of the system.

The temperature of the coolant in the supply line is much higher than required. If you put such a hot coolant directly into the circuits, the room will become hot like a sauna. To prevent this from happening, the hot coolant is diluted with coolant that has cooled down, passed through the circuits and given off its energy - the return.

This dilution is done in the mixing unit, which limits the flow hot water from the direct pipeline and simultaneously mixes it with the return one. By adjusting the amount of hot and cooled water, the desired temperature of the heated floor is achieved.

If the system is powered from its own boiler, then the dependence on networks (and their tariffs) is removed. Opportunity self-study coolant is a very valuable circumstance that provides independent external factors functioning of the system. For a frame house, such independence can result in considerable savings, since the ability to connect is not always available, and it is very expensive.

Types by fuel type

Heating boilers are a fairly large group of devices that have different principle actions. According to the type of fuel (energy source), boilers are divided into:

1. Gas. The most effective and economical boilers. The cost of 1 kW of energy is the lowest, and the efficiency is the highest.
2. . Water is heated using heating elements, electrodes or induction. The easiest to maintain and most expensive source of heating fluid.
3. Solid fuel. Boilers that use almost everything that burns as fuel - wood, coal, briquettes, pallets, etc. The availability of fuel makes such a boiler most suitable for autonomous heating of a house, but the combustion chamber has to be constantly filled. Modern models, however, are capable of long burning without human intervention.
4. Diesel. The source of thermal energy is burning diesel fuel. A diesel fuel boiler can operate independently for a long time - up to several months. This type of boiler may turn out to be more profitable than even a gas one, if it is not connected to the mains, but uses imported gas.
5. Combined. Boilers that have the ability to switch to another type of fuel if necessary. The design of such a boiler can have two fireboxes, or one universal one for different types fuel, you just need to replace the burner. At the same time, there are universal boilers with the option of converting wood to electricity when a second firebox is not needed. Opportunity to have Alternative option heating is a valuable quality for country house when fuel shortages are possible.

general information

A gas boiler is a device for heating water (coolant) using the combustion energy of natural gas or propane.

There are no specialized devices for heated floors, but there are boiler models with the “warm floor” function, when turned on, the usual power limitation occurs, which is irrational.

A connection to a gas main or imported gas in cylinders is used, which significantly increases costs. Externally, a gas boiler looks like a small cabinet or wall cabinet; it usually has an attractive modern design(at least the new models). Thus, powering the heated floor in the house from the boiler is very convenient and efficient.

Why is it needed?

The operation of a heated floor is based on the use of coolant energy. If there is no heating floor, you have to supply it from your own boiler. Coolant heating at battery life Underfloor heating systems can only be implemented in this way. Since gas is the most economical fuel, the cost of 1 kW of energy obtained from burning gas is several times cheaper than heating with electricity, then powering a water heated floor from your own gas boiler becomes the most preferred method.

Application

The best option to use a boiler for underfloor heating is the ability to connect to gas supply networks. In this case, fuel supplies are made constantly, the operation of the boiler becomes rhythmic and uninterrupted. At the same time, the water heated floor from the gas boiler works efficiently and effectively. All other options involve the delivery of gas in cylinders, which threatens interruptions and increases costs.

Safety requirements

Safety requirements for operation gas equipment almost the same for all types of boilers.

Basic provisions:

• a separate room is required to accommodate the gas boiler;
• The boiler room must be equipped with a gas analyzer so that in case of gas accumulation (for example, spontaneous extinguishing of the burner) it can be notified in time;
• should not be in the boiler room foreign objects, especially flammable ones - paints, solvents, chemicals, etc.;
• the boiler must be free for air flow; it is prohibited to lean or lean anything against it;
• If you detect a smell of gas, immediately turn off the supply, notify the gas service and ventilate the room. When using propane-butane, ventilation may be useless, since it is heavier than air and accumulates at the bottom;
• prohibited do-it-yourself repair boiler safety sensors.

The requirements are simple, but they must be strictly observed to avoid dangerous consequences.

Classification of gas boilers

There are many developments of gas boilers. They are conventionally divided into groups according to various characteristics.

According to the installation method, boilers are divided into:

1. Floor-standing. Installed on the floor, they do not create a load on the walls (which is very important for frame houses), have quite large dimensions and are used to heat large houses.
2. Wall mounted. They are hung on walls, which will require adequate strength, taking into account the weight of the boiler. Serve for heating systems small houses(up to 200 sq. m., some sources indicate higher values ​​- up to 350 sq. m.).

By number of circuits:

1. Single-circuit. They are used only to service one heating line.
2. Dual-circuit. Works simultaneously as a power source for heating system and for heating hot water for domestic needs. In this case, the device usually cannot operate simultaneously in both modes; when the DHW is heated, the heating turns off.

According to heat exchanger material:

1. Steel. The simplest and relatively cheap material. It has fairly average indicators in terms of service life, since temperature fatigue of the metal quickly sets in and cracks appear. In addition, the material is susceptible to corrosion, although manufacturers are making attempts to neutralize its effect by applying various coatings.
2. Stainless steel. Quite an expensive option, less commonly found on sale. Has good performance, combines everything best properties cast iron and steel devices.
3. Cast iron. High corrosion resistance, strength and durability are the defining qualities of the device. However, it is necessary to carefully monitor the uniformity of heating, otherwise the material will different temperatures adjacent areas may crack. In addition, the disadvantage is the usual fragility of cast iron.
4. Copper. This option is mainly implemented in wall-mounted boilers. Corrosion resistance, light weight, low inertia of the boiler, which makes it possible to quickly and flexibly regulate the operating mode.

By type of combustion chamber (furnace):

1. Open. Combustion occurs using air supplied from outside through special channels - natural draft. A device with this type of firebox requires free access of air and separate room. The cost of such a boiler is much lower than that of samples with a closed firebox.
2. Closed (turbocharged boiler). More expensive and convenient types of boilers. They can be used without being placed in a separate room, which is important for frame houses where the area is not so large.

To remove smoke, a vertical chimney is used, although a horizontal method is also possible using a fan, which at the same time supplies Fresh air, necessary for combustion.

Attention! Forced air flow for more intense combustion - turbocharging - is one of the functions of all new models of gas boilers.

Specifications

Familiarization with the technical characteristics of a gas boiler allows you to quickly and fairly fully learn all its properties and capabilities.

Key indicators reflected in technical specifications devices:

• boiler power;
• type of combustion chamber (open or closed);
• number of circuits (one or two);
• heating area (maximum, usually indicated upper limit distribution);
• volume of fuel (gas) used;
• water consumption, ability to heat it. (2.5-17 l/min on average, there are also more productive models);
• Device efficiency (usually within 80-90%).

Attention! Boilers from different manufacturers can be provided with a different list of characteristics, which is often marketing moves. Thus, an efficiency of 109% is nonsense from a physical point of view, and yet this figure can often be seen in product data sheets.

Choice

First of all, you should choose a water heater for underfloor heating of suitable power. Calculating the power of a boiler is a difficult task; the easiest way is to proceed from the average value - 1 kW of power per 10 sq. m. area.

It is necessary to pay attention to the possibility of adjusting the boiler operating mode. It is best if there is the possibility of smooth adjustment.

It is also necessary to decide on the required number of circuits, type of installation and other characteristics of the boiler, which will best meet the requirements of the existing premises.

Principle of operation

The gas boiler closes the coolant circulation loop in the system, powering the heated floor from the heating boiler, being both a source of direct hot flow and a receiver of cooled return flow. The heated coolant leaves the boiler and is sent to replenish the heating system. Along the path along the contour of the heated floor, its temperature drops, giving thermal energy floor surface.

After this, part of the return flow is returned for reheating, and the other part is mixed with the fresh hot flow to form a mixture at a given temperature. Thus, the gas boiler constantly heats, releases and receives coolant circulating through the system.

Water heating

The return flow entering the heat exchanger is heated by the burner flame; upon reaching the desired temperature, it is directed to the underfloor heating system using its own heat. Thus, cycle after cycle, there is constant heating and release of the coolant, as well as the reception of cooled return flow, which is supplied for heating.

Device

One- and double-circuit boilers have some difference in the device.

A single-circuit boiler only works to heat the coolant in the underfloor heating system, for which the incoming return flow passes into a heat exchanger, which heats it from the burner flame.

The hot coolant is discharged into the supply line and flows into the floor heating circuit system.

The double-circuit boiler has a simultaneous connection to the underfloor heating system and to the water supply system. In coolant heating mode, it operates as described above. When switching, the flow of heating fluid is temporarily stopped, and hot water is prepared in the heat exchanger. At this time, there is a short break in the replenishment of the heated floor, which is not so noticeable due to the inertia of the system, and if the heated floor structure contains a concrete screed, this does not affect the floor temperature in any way.

Connection diagram

The most simple circuit Connecting a heated floor to a boiler means connecting the supply and return lines from to the corresponding boiler terminals. This option is used in simple single-circuit boilers. It is for this reason that the question of how to connect a heated floor to a boiler is not so pressing. The main task is not to confuse the conclusions, which, in fact, is excluded.

To connect double-circuit boiler In addition to connecting the coolant supply and return, you will need to connect the forward and reverse flows from the water supply system. In addition, it is necessary to connect the gas supply pipe, smoke removal system and air supply (turbochargement). All pipelines must have Ball Valves so that at the right time it is possible to block any flow that is required.

Installation

In itself, connecting the heated floor to the boiler does not cause any particular difficulties and can be easily done with your own hands.

Procedure:

Preparatory work:

1. Boiler installation. The device is completely installed - on the floor in in the right place or hanging on a wall - depending on the type of structure.
2. (pouring a concrete screed is excluded until the functionality is fully checked or before the circuits are pressurized with compressed air).
3. Connecting underfloor heating circuits to the pump-collector unit.

Connecting the boiler to the underfloor heating system:

1. The main pipelines are connected to the corresponding outlets and the boiler. For connection, metal-plastic, copper or polyethylene pipe with appropriate fittings to match the boiler connections and mixing unit. The gas supply to the boiler is carried out using a corrugated stainless pipe.
2. Checking the connection(visual, trial run, ).

Attention! It is imperative to ensure the possibility of shutting off each pipeline in emergency situation to prevent unwanted incidents.

Advantages and disadvantages

pros:

• efficiency;
• efficiency;
• reliability;
• high quality work, possibility of self-installation.

Minuses:

• the need for coordination with Gosgortekhnadzor;
• possibility of gas leakage;
• the need to comply with the boiler installation conditions (separate equipped room);
• The gas supply is shut off automatically if there is poor ventilation or a leak.

The last disadvantage is also an advantage - the possibility of an accident is eliminated.

Useful video

Visually see an example of connecting a gas boiler to a water boiler warm floor in the video below:

conclusions

Using a gas boiler to power water heated floors in frame house gives effective and economical way coolant preparation. The costs in this case are the lowest compared to any other type of boiler; in addition, the operation of the heated floor is seasonal, which provides additional features to save money.

The ability to start the system at any time at will, relative heating autonomy, preparation of coolant with simultaneous DHW heating — important advantages gas boilers providing comfort and coziness of a frame house.

In contact with

The underfloor heating system, which is based on heating using a pipeline and water as a coolant, is different high level efficiency and ease of installation of the entire heating system. The design of the water heated floor is closed, and, therefore, its operation does not require periodic additional intervention. Such a system can be made with your own hands both in private housing construction and in an apartment. To choose the right boiler model, ensure its efficient operation and maximum level efficiency, one should take into account its power, calculation of the heated area, availability additional devices heating and heating, for example, a boiler or collector.

For installation in an apartment, water heated floor systems exist automatic boilers various types, namely:

• Gas (double-circuit and single-circuit);
• Electric water heater;
• Solid fuel;
• Diesel.

There are also types of boilers depending on the method of their installation. So, floor option boilers are in many ways inferior to the wall-mounted type, since it takes up more usable area, but the connection diagram for these varieties is the same.

These devices can be installed either specifically for a heated water floor system, with their performance calculated for a given volume of coolant, or used for heating floors along with their main purpose - space heating.

A boiler of any configuration and operating principle can be suitable for a heated floor, and its automated operation is a prerequisite.

When installing heated floors in an apartment, a double-circuit gas or electric boiler is most often installed. Considering the cost of energy, it will be profitable to use a double-circuit gas unit, but to make a heated floor of this type, a special room and an air ventilation system are required. Also in this room there can be a collector, and placing a boiler will greatly save space. A double-circuit gas boiler can perform functions not only for heating air, but also for providing housing warm water. A double-circuit gas boiler for heated floors requires compliance special conditions and installation rules. Installation of such equipment must be carried out by gas service employees after prior approval, therefore installing a gas boiler with your own hands is illegitimate and contrary to current standards.

The electric boiler is easy to use, and its installation can be done by yourself. Unlike other types heating devices electrical equipment is environmentally friendly, and the connection diagram does not require special knowledge or highly specialized skills. However, one of the main disadvantages that an electric boiler has is high costs on electricity consumption.

Solid fuel and diesel type boilers for water heated floors are more suitable for large country houses and cottages. The installation scheme of these systems is simple; the models are unpretentious in operation, but maintaining their operation requires constant monitoring. The solid fuel unit operates on briquettes or pellets, the loading of which must be ensured by the operator. The power of these devices, as well as the efficiency, is always high.

Whatever type of boiler is chosen for a particular room, before purchasing and installing it is necessary to correctly calculate its power, determine the location of connection to the water heated floor system, the need for a boiler, etc. Installation and connection of a special boiler can largely reduce pressure on the boiler.

Calculation of the required boiler power for water heated floors

For efficient heating floors and achieving maximum efficiency when operating any type of boiler, it is necessary to make the correct calculation required power. The heating diagram and calculation must contain information about all potential sources of heat loss.

The calculation should be carried out taking into account the sum of all power indicators of floor heating systems and an additional margin from this number, which is approximately 15–20%.

The boiler power must cover the entire volume of the room being heated, taking into account the heat loss of the building. For a full calculation, it is necessary to involve a heat power specialist, but the simplest one can be done independently. Average heat loss in a house is 100 W per 1 sq. m., in case of absence nearby unheated premises and the ceiling height is not higher than 3 m. If the room is corner or has two or more windows, the average heat loss is 150 W.

As a rule, the efficiency of a water heated floor depends not only on the correctly selected boiler power, but also on the type of control mechanism installed. To do this, you need to choose the right high-quality and reliable collector, which has an outlet not only for the underfloor heating system, but also allows you to install a boiler (water heater). Calculating the boiler power requires accurate data on the volume of heated rooms and the location of furniture, decor or functional objects in them.

Installation of the boiler and connection of the water heated floor

The connection diagram for the gas boiler must be agreed upon with the relevant services. Wherein gas water heater The kit must include documentation regarding the test run. detailed instructions must contain everything technical features models, connection and operating conditions.

Installing a boiler requires preliminary arrangement of its permanent location. This area should be leveled using sand-cement mixture, and also, if possible, trim ceramic tiles or other durable and heat-resistant material. Since in most cases boilers are installed in specially designated areas, it is necessary to provide additional places for the location of such additional equipment, like a water heater and collector. The boiler should be provided with reliable thermal insulation; this can be done with your own hands, using foil types of insulating material. Since the water heater in operating condition has a large mass, its fastening to the wall must be reliable.

A solid fuel boiler requires a foundation; its mass is quite large and over time the unprepared surface may sag if the load calculation was incorrect. A double-circuit boiler, following the example of a boiler, can be installed on a wall using anchor connections. A solid fuel boiler is rightfully considered the most profitable and economical means of heating premises.

The branching and connection diagram for the water heated floor of each room should provide for a centralized location of the heating collector, which will not allow excess use of building materials.

The collector is usually installed in close proximity to the boiler. Installation must include reliable fastening to special strips, which allows you to insert pipes at the required angle and mount the circuits of the heating system and additional equipment, such as, for example, a water heater.

The power and efficiency of the heated floor from the boiler is regulated either using mechanical thermostats, or using special automation. These devices can be selected depending on the expected temperature of the coolant in the heating system, as well as the power of the boiler. Thermostats are installed after the collector, taking into account mandatory free access to them.