Connecting gas heating is one of the most crucial stages of building improvement. Comfort in the house for many years depends on the quality of the selected materials and installation work. The correct scheme of the gas heating boiler piping protects the system from overloads and ensures uniform heating of all rooms.
The article proposed by us contains the rules and proven schemes for piping heating equipment. Recommendations are provided to ensure the build quality and further flawless operation of the boiler. The information we provide is based on building codes.
The content of the article:
- Why is the correct strapping so important?
- The main nodes and elements of the system
- Polypropylene - the optimal solution
- Location and installation of gas boiler
Features of different strapping schemes
- Method 1: piping in gravity systems
- Method 2: tying the boiler with a circulating pump
- 7 recommendations by experienced craftsmen
- Conclusions and useful video on the topic
Why is the correct strapping so important?
Strapping is called pipes and mechanisms designed to supply coolant from the boiler to the radiators. This is almost the entire heating system, with the exception of batteries.
The system consists of many nodes, however, even a non-professional can mount the simplest tying of the boiler. But if you need a complex scheme, it is better to contact an experienced master.
It is better to place the boiler in a separate room, for example, in a utility, boiler room or basement, since Strapping implies additional pipes and mechanisms, which is not always convenient. However, with a shortage of space, heating equipment is installed in the house
The choice of strapping scheme for each particular house depends on the type of boiler, construction features, type of heating system.
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This equipment is valued for non-volatility. It is popular in areas where there is no centralized gas supply. Most solid fuel models are not equipped with circulation pumps, and this is taken into account when choosing additional devices, piping
Electricity is a costly resource. Operation of even the most economical electric boilers is more expensive than heating with the help of any other fuel. For the rest, they are perfect. When choosing a piping scheme, the presence / absence of an automatic control unit and the need for equipment grounding are taken into account
In recent decades, natural gas remains the most profitable fuel. Connecting the house to the highway is associated with some bureaucratic procedures, but the hassle pays off. Be careful when arranging the boiler strapping, as fuel is explosive
The advantages of liquid fuel equipment - high efficiency, full automation, versatility (you can replace the burner and heat the house with gas). For installation of such a boiler do not need approvals and permits. In the piping scheme should take into account the need to install a tank for fuel
Solid fuel boilers - familiar and reliable
Wall electric model
Gas boiler heating
Fuel oil boiler in the house
Any gas equipment is dangerous. Incorrect connection is fraught with not only problems with heating, but also explosions and destruction, therefore it is necessary to strictly follow the rules and regulations, comply with the requirements of TB. The main documentation, which is based on the arrangement of the gas heating system, is a SNiP.
The main node of the system is the boiler. The scheme of binding is chosen, focusing on its type, location (wall or floor model), structural features
Need to plan carefully heating circuit, the location of equipment, especially the laying of pipelines.
The boiler harness performs several important functions at once:
- Pressure control. If the harness is mounted correctly, the thermal expansion is compensated, which means that the pressure in the system will not rise to critical values.
- Air removal. Air bubbles form a plug, because of which the efficiency of water heating decreases: the radiators do not heat up completely, and the consumption of resources remains the same. Quality boiler strapping is necessary to prevent this problem.
- Prevention of blockages in the system. If the boiler is tied up incorrectly, the risk of scale formation in radiators and pipes increases. Small debris in the coolant pollutes the system, which leads to fuel waste and higher heating costs while reducing its quality.
- The ability to connect other circuits. You can install a floor heating system, cumulative boiler.
In many ways, heat supply depends on the correctness of the boiler connection to pipelines and other important knots, so the gas boiler piping scheme must be carefully thought out and mounted as much as possible qualitatively.
When arranging the radial system, collector cabinets are installed where you can install most of the boiler strapping mechanisms. It is convenient and practical.
Correctly selected and mounted boiler strapping will last for many years without accidents and repairs, and its cost will be optimal.
The main nodes and elements of the system
For arrangement of gas piping will require the following devices:
- pressure gauge;
- circulation pump;
- expansion tank;
- drain cock;
- ball valve;
- balancing crane;
- filtration system;
- valves (distribution, check, safety, etc.).
Each node performs its own functions, and the need for their installation is determined by the design of the heating equipment. So, if the pump is initially included in the boiler package, then it is not required to be purchased separately.
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Closed systems have a certain amount, and heating is no exception. Water expands when heated, thereby increasing pressure. To prevent leaks in the system, an expansion tank is needed, where excess liquid flows. Another function of the device is to compensate for the shortage of water when the temperature decreases.
The device is needed to stabilize the system. It maintains the pressure that is necessary for the water to move freely throughout the system, despite its natural resistance. Owners of private homes usually buy wet-rotor pumps. These models have relatively low efficiency, but they do not make noise when working
The pressure gauge works in conjunction with a safety valve. The device measures pressure, and the valve is triggered when it reaches the maximum allowable marks. While the boiler is turned off, the pressure in the closed system remains unchanged, but it starts to grow immediately after the boiler burner is turned on: the water warms up, expands and moves. If the process is not controlled, it can lead to breakdowns and even an explosion.
This device regulates the volume of coolant flowing to the heating devices. If the scheme is simple, and the diameter of the pipes was originally calculated exactly, there is no need for a balancing valve, but it is better to provide a complicated structure with such a valve
The device is necessary to remove water from the entire system or any one of its part. There are several types of cranes from different materials: straight, angle, brass, polypropylene, etc. With the choice should focus on the design features of the system and the estimated frequency of use appliance
This is not to say that heating will not work without a filter. The question is not in the functionality of such a system, but in its durability. Small debris and pieces of scale are constantly circulating through the pipes along with the coolant and damage the nodes of the system from the inside. Accumulating, they can create a mechanical barrier to the movement of warm water.
The devices are made of brass and steel. They are manual, and also with drives - electric or pneumatic. Cranes perform the function of controlling the coolant in the pipeline. Using the device, you can easily switch it to another direction.
The function of the check valve is to direct the flow of coolant only in one direction, preventing movement back through the pipe. This is the only way to achieve trouble-free heating. At the same time, the device should not degrade the operational and technical performance of the system, so it is worth paying attention to choosing the right device.
Expansion tank in the heating system
Installation of a circulation pump
Installation of gauge in strapping
Balancing valve for heating system
Drain cock - an important system node
Mechanical cleaning filter
Ball valve - reinforcement element
The principle of operation of the bypass with a check valve
Shut-off devices, pressure control devices and protective systems must be installed in the gas boiler piping. Moreover, all nodes should be carefully selected, and saving them fraught with breakdowns.
When choosing equipment for tying the boiler, it makes sense to study the ratings, customer reviews, especially when it comes to circulation pumps. These devices are responsible for uniform heating and the same temperature of all radiators in the house.
It is worth overpaying for equipment and pipes from manufacturers with a good reputation. It is much cheaper than repairing heating.
Polypropylene - the optimal solution
Many experts favor piping gas equipment polypropylene. Their main argument is universality and the ability to implement any scheme without any special problems. On the other hand, an inexperienced master will hardly have to deal with systems of increased complexity.
It is better to entrust the development and installation of binding schemes of increased complexity to a specialist. An inexperienced master can make mistakes that will reduce the effectiveness of the system or even jeopardize its performance.
The main advantage of polypropylene pipelines is reliability. According to manufacturers, their products serve 40 years or more.
The material is resistant to overpressure (can withstand up to 25 bar), tolerates hydraulic shocks and temperatures of 95 degrees. There is a drawback that needs to be taken into account: this boiler strapping reduces the efficiency of the heating system.
When designing a strapping, it is better to give preference to a scheme that assumes a minimum of sgons. This will increase the chances of keeping the system tight in the future.
The connection of the boiler to the gas pipeline must be tough (“American”, metal sgon). Of all types of gaskets, only paronitic ones are suitable. plastic materials (rubber, fum, tow) are deformed, which leads to loss of tightness or reduction of the internal diameter of the gas pipeline
Location and installation of gas boiler
The main rule for choosing a location floor boiler: it should not be above the batteries. If you do not stick to it, the appearance of air bubbles and the formation of traffic jams in the system. The pipe extending from the boiler must be strictly vertical.
If the choice is made in favor of the wall model, then it should be equipped with an automatic air vent. When developing a strapping scheme, such nuances are necessarily taken into account.
For heating with forced circulation, it is better to choose a model with built-in additional mechanisms. But for a gravitational system these are unnecessary nodes, and it makes no sense to overpay for them.
Many modern models are pre-equipped with all the necessary additional devices: expansion tanks, protective systems, pumps. Their disadvantage is the high price compared to more "simple" boilers.
Features of different strapping schemes
The coolant is moved through the pipeline due to the slope of the system or forcibly pumped circulation pump. Depending on this, the boiler strapping scheme is selected.
Method 1: piping in gravity systems
Binding of the boiler in gravity heating system is simple and anyone who can handle tools can mount it. The coolant moves in accordance with physical laws.
No instruments are required for this. The system does not depend on electricity, so a sudden shutdown will not affect the quality of heating.
Binding of the boiler will cost a minimum of money, because do not have to buy additional devices, pay a team of masters for installation. Operation of such a system is also cheap, and the damage can be corrected by yourself.
Binding of the boiler in the system of gravitational heating can be mounted with your own hands, but it is not always possible to do it perfectly. If mistakes are made in calculating the diameter and the heating does not work well, the situation can be corrected by installing a pump
The only negative: such a scheme can be used only for a small area home. In addition, you will have to carefully calculate the diameter of the pipes and repeatedly double-check the data, otherwise you can not guarantee the normal heating of the house. Large diameter pipe spoils the interior, and it is problematic to disguise it.
Method 2: tying the boiler with a circulating pump
Systems with pumping equipment easier to manage than gravity. With forced heating device tying the boiler harder and more expensive, but the result - a comfortable temperature in all rooms.
This heating is volatile, so it is advisable to be safe and mount it so that when power outages could switch the system to gravity circulation mode heat carrier.
It is impossible to organize forced circulation if the house is not connected to the grid, but this happens infrequently. For a large building, this is the best heating scheme, although the boiler strapping device requires considerable effort.
The boiler piping is complicated by additional devices that require regular maintenance during operation. Without experience, it is difficult to handle yourself, so you have to hire masters and pay for their work.
Hydraulic levers connect to the heating of houses in which many people live. Appliances are needed where several circuits are provided and powerful boilers are installed (more than 50 kW)
To minimize the number of additional devices, you can implement a circuit with primary secondary rings with circulation pumps in each of them. If the power of the boiler is less than 50 kW, then collectors should be included in the scheme, otherwise the batteries will warm up unevenly.
Combined systems are economical and efficient. Underfloor heating works due to heated water coming from the radiator circuit. This allows you to expedient to spend energy and live with maximum comfort.
The best binding of the boiler for heating a small house is the simplest. No need to install extra devices, because the simpler the design, the more reliable. However, for a spacious building with several heating circuits, it is worth choosing a scheme with forced movement of the heat carrier and a collector-comb.
7 recommendations by experienced craftsmen
For each heating system, the binding scheme is selected individually, and the methods of its implementation can also vary greatly.
However, there are some general recommendations that should be followed:
- The boiler is installed in accordance with regulatory requirements below the level of radiators. If the model is floor-standing, then there must be a non-combustible material under it - metal, concrete or clay. If the wall, then access to it should be free. Ventilation and lighting are required.
- The coaxial flue enters a gas boiler piping. When connecting it is necessary to take care of the tightness of the joints.
- After installing the boiler and chimney, the security group is installed in the following order: a pressure gauge, then a safety valve, and after it an automatic air vent.
- A 1.25-inch pipeline is brought to the collector, along which they install protective systems, a pump, a hydraulic needle, another air vent.
- To supply the coolant to the radiators, 3 one-inch pipes are removed from the comb, and the remaining connections are closed with plugs. After that, radiators and return pipes are already installed and connected.
- If the system is combined (“2 in 1”), then the contour of the heated floor is supplied with a separate pump.
- The expansion tank is placed between the hydraulic needle and the boiler.
Sometimes you have to install boiler automation devices. This is required if the boiler strapping provides for a complex heating control system. Then the temperature sensor is mounted on the street, and a thermostat is installed in the room.
With the rules and guidelines for adjusting the automation for a gas heating unit will acquaint next article, which we strongly advise to read.
Conclusions and useful video on the topic
We offer several video tutorials to help solve the task of tying a gas boiler.
Video # 1. Tips wizard on tying the boiler polypropylene (simple scheme):
Video # 2. Installation instructions for complex strapping wall model of the boiler:
Video # 3. Nuances of connecting the floor model:
It is advisable to choose a gas piping scheme that can be mounted without assistance. However, if in doubt, the advice of a professional does not hurt.
Pay special attention to the choice of pipeline material, take care to install a filter to clean the coolant. Smooth internal walls of pipes and clean water in them - a guarantee of long and stable operation of the heating system.
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