What is the optimum temperature for a gas boiler

Working temperature of the heating boiler. The optimum boiler temperature. Ways to normalize the temperature regime of heating

After the installation of the heating system, you need to configure the temperature regime. This procedure must be carried out in accordance with existing norms.

Requirements for the temperature of the coolant are set out in regulatory documents that establish the design, laying and use of engineering systems of residential and public structures. They are described in state building standards and rules:

For the calculated water temperature in the supply, the figure is accepted that is equal to the water temperature at the output of the boiler, according to his passport data.

For individual heating, decide what the temperature of the coolant should be, should be taken into account such factors:

• The beginning and completion of the heating season in the average daily temperature on the street 8 ° C for 3 days;
• The average temperature inside the heated premises of housing and communal and social significance should be 20 ° C, and for industrial buildings 16 ° C;
• The average calculated temperature must comply with the requirements of DBN in.2.2-10, DBN in.2.2.-4, Dsanpin 5.5.2.008, joint venture 231-85.

According to SNiP 2.04.05 “Heating ventilation and air conditioning” (paragraph 3.20) The limiting indicators of the coolant are as follows:

Depending on external factors, the temperature of the water in the heating system can be from 30 to 90 ° C. When heated over 90 ° C, dust and paint coating begin to decompose. For these reasons, sanitary norms prohibit the implementation of greater heating.

To calculate optimal indicators, special graphs and tables can be used, which determine the norms depending on the season:

• With an average indicator outside the window of 0 ° C, the supply for radiators with various wiring is set at a level of 40 to 45 ° C, and the return temperature is from 35 to 38 ° C;
• At.20 ° C for the supply of heating from 67 to 77 ° C, and the return rate should be from 53 to 55 ° C;
• At.40 ° C outside the window for all heating devices put the maximum permissible values. This is from 95 to 105 ° C, and on the return. 70 ° C.

Heating system without special adjustments

Such a system, of course, is a relic of the past, but it still occurs, moreover, quite often. That is, we have a boiler on which you can somehow set the temperature of the water that the boiler supports. Why this one adjustment is often not enough?

There are such types of automation of gas boilers, when we can increase its temperature at any time, but we cannot reduce. To reduce the temperature, we must first cool the boiler completely, and only then adjust it to a lower temperature. This differs not so much old and wretched boilers as boilers with energy.Dependent automation.

Scenario

Since our house is most often two.Story, we do not need the same temperature on the second floor as on the first. The second floor is warming at the expense of the first and if the radiators of the second floor are heated in the same way as the radiators of the first, and most often stronger, then on the second floor it is always hot, and on the first is cold. Women (especially thin) love warmth and on the second floor they all suits them. But in the kitchen of the first floor they are cold, which makes them ask you, as the owner of the house, go down to the boiler and “give” gas. You go and give in. After that, on the second floor it becomes unbearably hot, and on the first-more or less normal. The wife is satisfied. Then she needs to go to the second floor. There was baked. And then the wife, without hesitation, opens the window or even the window. It’s hot after all! You (the whole family) flies warmly for the gas for gas.

Over, even if the window is not opened, then in the overheated room, heat is always consumed more than in the underheated room. The more heat, the more it is consumed! So the window or window can not be opened. Gas overrun is provided without this.

Scenario

Our house is a mansion, that is, a separate cube or parallelepiped. On the one hand, the house is usually south, on the other north. If the sun came out in winter, then it shines through the southern windows, and whatever it is low and cold, the room heats up. It gets hot in it. We again receive heat reigning, for we have its excess.

Heating system without special adjustments

Such a system, of course, is a relic of the past, but it still occurs, moreover, quite often. That is, we have a boiler on which you can somehow set the temperature of the water that the boiler supports. Why this one adjustment is often not enough?

Some features of temperature adjustment on a gas boiler have such types of automation of gas boilers, when we can increase its temperature at any time, but we cannot reduce. To reduce the temperature, we must first cool the boiler completely, and only then adjust it to a lower temperature. This differs not so much old and wretched boilers as boilers with energy.Dependent automation.

Scenario

Since our house is most often two.Story, we do not need the same temperature on the second floor as on the first. The second floor is warming at the expense of the first and if the radiators of the second floor are heated in the same way as the radiators of the first, and most often stronger, then on the second floor it is always hot, and on the first is cold. Women (especially thin) love warmth and on the second floor they all suits them. But in the kitchen of the first floor they are cold, which makes them ask you, as the owner of the house, go down to the boiler and “give” gas. You go and give in. After that, on the second floor it becomes unbearably hot, and on the first-more or less normal. The wife is satisfied. Then she needs to go to the second floor. There was baked. And then the wife, without hesitation, opens the window or even the window. It’s hot after all! You (the whole family) flies warmly for the gas for gas.

Over, even if the window is not opened, then in the overheated room, heat is always consumed more than in the underheated room. The more heat, the more it is consumed! So the window or window can not be opened. Gas overrun is provided without this.

Scenario

Our house is a mansion, that is, a separate cube or parallelepiped. On the one hand, the house is usually south, on the other north. If the sun came out in winter, then it shines through the southern windows, and whatever it is low and cold, the room heats up. It gets hot in it. We again receive heat reigning, for we have its excess.

How to save when heating, and what temperature should be indoors?

According to regulatory requirements in residential premises, the air temperature should be in the range from 18 to 25 degrees of heat. Experiment with settings, switch modes, select a comfortable temperature for you.

Remember that at night the temperature is lower than during the day. In this case, the use of programmers who automatically regulate the operation of a gas boiler at temperature changes will be ideal. Thus, you will save without losing comfort.

If your house is connected to the gas line, then install the counter. So you can accurately control the fuel consumption and pay only for the spent volume, and not according to the norm.

Temperature norms

Requirements for the temperature of the coolant are set out in regulatory documents that establish the design, laying and use of engineering systems of residential and public structures. They are described in state building standards and rules:

For the calculated water temperature in the supply, the figure is accepted that is equal to the water temperature at the output of the boiler, according to his passport data.

For individual heating, decide what the temperature of the coolant should be, should be taken into account such factors:

• The beginning and completion of the heating season in the average daily temperature on the street 8 ° C for 3 days;
• The average temperature inside the heated premises of housing and communal and social significance should be 20 ° C, and for industrial buildings 16 ° C;
• The average calculated temperature must comply with the requirements of DBN in.2.2-10, DBN in.2.2.-4, Dsanpin 5.5.2.008, joint venture 231-85.

According to SNiP 2.04.05 “Heating ventilation and air conditioning” (paragraph 3.20) The limiting indicators of the coolant are as follows:

• For the hospital. 85 ° C (excluding psychiatric and drug dealerships, as well as administrative or domestic premises);
• For residential, public, as well as household structures (not counting the halls for sports, trade, spectators and passengers). 90 ° C;
• For visual rooms, restaurants and premises for the production of category A and B. 105 ° C;
• For catering enterprises (excluding restaurants). It is 115 ° C;
• For production premises (category B, G and D), where combustible dust and aerosols are released. 130 ° C;
• For stairwells, lobby, transitions for pedestrians, technical equipment, residential buildings, production premises without sunbathing dust and aerosols. 150 ° C.

Depending on external factors, the temperature of the water in the heating system can be from 30 to 90 ° C. When heated over 90 ° C, dust and paint coating begin to decompose. For these reasons, sanitary norms prohibit the implementation of greater heating.

To calculate optimal indicators, special graphs and tables can be used, which determine the norms depending on the season:

• With an average indicator outside the window of 0 ° C, the supply for radiators with various wiring is set at a level of 40 to 45 ° C, and the return temperature is from 35 to 38 ° C;
• At.20 ° C for the supply of heating from 67 to 77 ° C, and the return rate should be from 53 to 55 ° C;
• At.40 ° C outside the window for all heating devices put the maximum permissible values. This is from 95 to 105 ° C, and on the return. 70 ° C.

How to save when heating, and what temperature should be indoors?

According to regulatory requirements in residential premises, the air temperature should be in the range from 18 to 25 degrees of heat. Experiment with settings, switch modes, select a comfortable temperature for you.

Remember that at night the temperature is lower than during the day. In this case, the use of programmers who automatically regulate the operation of a gas boiler at temperature changes will be ideal. Thus, you will save without losing comfort.

If your house is connected to the gas line, then install the counter. So you can accurately control the fuel consumption and pay only for the spent volume, and not according to the norm.

Removing air from the heating system

It happens that all attempts to adjust the temperature of the boiler do not give the desired result. This happens mainly in the fall, after a long summer downtime of the heating system.

Upon occurrence of cold weather, the consumer starts the boiler, he begins to work, and heating radiators heat up unevenly-the section closest to the boiler is at least somehow heated, and the subsequent ones become slightly warm, or even completely cold.

This may happen if before the first launch of the boiler in the new heating season, the water level in the heating system was not checked. Warm summer days, heated from the sun, water from the system begins to evaporate a little, the process lasts all summer, and by autumn the level of the coolant in the system can fall below the minimum mark.

After the first inclusion, the circulation pump, starting to “drive” water through the system, drives part of the air inside the heating. Pushed by water, it accumulates in the highest and most remote points of the system from the boiler.

The “faning” of the system occurs. The cork from the accumulated air does not allow the coolant to fill the heating radiator to the end.

To solve the problem to the upper part of the radiator, from the far from the boiler of its side, the crane of Maevsky is injected. The device is designed to remove air from the heating radiator.

When turning the tap head with the hand or screwdriver, an indirect through stroke opens to remove air. An hiss of the outgoing air appears. As soon as the first spray of water begins to stand out through the crane, it is closed.

In the first 2-3 days of heating, it is recommended to carry out several such operations with an increasing break between them.

Before opening the Maevsky crane, it is necessary to substitute an empty bucket or other suitable container under it. Between the tap and the wall, it is advisable to place any protective screen of cardboard, paper, wood.Fiber plate or other materials to protect the wall covering from water spray.

As a “disease” of the heating system, bullying is characteristic of large heating contours due to possible, unauthorized selection of hot water from the heating system. Therefore, in apartment buildings, the air release procedure from the heating system may need several times during the entire heating season.

Hot water priority

In hot water priority, we observe a clear sequence of actions and the cyclical inclusion for heating. If you want to turn on one of the taps with hot water, the boiler will forget about heating and he will warm the water. This is called the priority of hot water.

Heating works around the clock, the boiler knows when to turn on and off, maintaining the necessary temperature in the house. The need for hot water is much less likely than the need for heating the house. When you turn on the water, the house is “already warm”, and the water is “still hot”. Therefore, priority for heating hot water is higher than heating.

In most modern gas boilers, the water temperature can be adjusted separately in the range from 35 ºС to 55 ºС. The procedure is similar to the heating procedure. Put a suitable temperature and use hot water.

The principle of operation of a double.Circuit gas boiler of heating. DIS

The scheme of the double.Circuit gas boiler looks like this. The heating liquid warmed up by a gas burner moves in the heat exchanger, warming the plate circuit with a heat with household water.

The use of double.Circuit gas equipment immediately as a boiler and as a water heater is not possible. During a hot water collection through a water supply system, the coolant (adjustable by the automatic control unit) ceases to move in a large circle of heating. It switches to the movement diagram along a small, plate, contour for warming up the water used.

This means that during the use of hot water the house ceases to heat up. This situation is not critical if the water fence is short.Term. After closing the crane, the coolant automatically resumes circulation along the heating contour, the house warms up again.

The situation is more unsightly when the water fence is long in time (for example, taking the bathroom, shower). Rooms are left without heating for a long period of time in the cold season. It is recommended to install an indirect bulk heater in addition to the boiler. The heat exchanger is located inside the container for household water, and the coolant of the heating system circulates in it. The water inside the tank is heated by the heat of the gas boiler.

This work scheme allows you to use the necessary volume of hot water without stopping the heating of the house.

Favorable gas heating is widespread wherever you can lay gas communications without additional costs. The installation of the boiler requires a certain approval of the project. The installation of gas equipment is carried out only by specialists. Over, if necessary, the boiler is binded the necessary components are purchased separately.

But despite the material costs of installation, the floor or wall.Mounted gas boiler will justify the spent forces, time, finances of its energy efficiency, ease of operation, reliability, flexible and therefore economical functioning scheme.