What is the standard for a floor heating stress test

Standard: Water supply pressure: , the maximum should not be greater than MPA.

The flow rate of hot water in the heating pipe should be controlled.

Thickness of geothermal radiant heating structure: 50 80 mm (excluding the thickness of the screed layer and the ground decorative layer), of which the insulation layer is 30 50 mm, and the filling layer is 25-30 mm.

Structural weight of geothermal radiant heating layer: 70 120kg m2.

The length of each loop heating pipe should be controlled at 60 80 meters, the longest should not exceed 100 meters, and each set of manifolds should not exceed 6 circuits.

Floor heating is to use the whole ground as a radiator, through the heat medium in the floor radiation layer, evenly heat the ground, use the heat storage of the ground and the upward radiation law of heat, conduct heat from bottom to top, and achieve the purpose of heating.

But to say that the radiation of underfloor heating is terrible is obviously to take advantage of people's unclear concept of "radiation". Zhang Chenggang pointed out that there are many kinds of radiation, mainly ionizing radiation and non-ionizing radiation. Among them, ionizing radiation is devastating to living organisms, such as nuclear radiation.

But the "radiation" of underfloor heating is not ionizing radiation, but a kind of heat transfer. There are 3 forms of heat transfer: conduction, convection, and radiation, and sunlight is the most typical form of radiation.

Most home floor heating radiation is infrared radiation, which is a non-contact physical heat transfer that does not involve ionizing radiation at all.

How to carry out pressure test and testing standards for floor heating:

1. Slowly inject water into the system through the pipeline of the manifold, and discharge the air in the system at the same time;

2. After the system is filled with water, carry out water tightness inspection;

3. Manually use a pressure pump to slowly increase the pressure of the system;

4. After the system is boosted to the specified test pressure, stop the pressurization, stabilize the pressure for 1 hour, and observe whether the pressure gauge has a pressure drop phenomenon, so as to further judge whether there is water leakage;

After hours, the pressure is made up to the specified test pressure value, and the pressure value drops within 15 minutes, but it indicates that the system has no leakage.

Floor Heating Stress Test Precautions:

1. Before the hydrostatic test, safe and effective fixing and protection measures should be taken for the pressure test pipes and components;

2. When pressurizing, the water is injected by the water separator, the water injection speed should be slow and pay attention to the gas discharge in the heating pipe, after the system is filled with water, the first thing to check the sealing of each loop is;

3. The test pressure of floor heating pressure is times of the design pressure, and should not be less than;

4. Remember to do a good job of pipeline anti-freezing protection when conducting water and floor heating pressure tests in winter.

General water pressure test, stable pressure for 30 minutes without obvious pressure drop. Due to factors such as the large expansion and elasticity of the floor heating system pipeline, and the difficulty of draining the air in the pipeline, the one-time pressure may not be accurate. If the pressure continues to drop within a few minutes, it should be beaten several times, and the pressure will no longer drop significantly after stabilization, and the system can be considered to have no leakage.

Look at the pressure gauge first.

The value of the unit of the superscript and the maximum range. Divide the maximum range by the number of cells to calculate the pressure represented by each grid. Multiply by the number of squares indicated by the pointer to determine the pressure value.

If the unit of the table is kg, or bar, it is read out as kg. If it's MPA. Multiply the reading by 10 and you're in kilograms.

For general corrosive media, if the stainless steel elastic element can withstand corrosion for 1 or 2 years, the general stainless steel pressure gauge can be selected, and the impulse pipe should be short when installed, and the buffer coil should be changed to a buffer tank if necessary to prevent impurities from clogging.

The normal value of the geothermal pressure gauge should not be greater than.

According to the provisions of the national standard JGJ142-2004 "Technical Regulations for Ground Radiant Heating".

Article The working pressure of the low-temperature hot water ground radiant heating system should not be greater than; When the height of the building exceeds 50m, it is advisable to set up vertical partitions.

Article 1 No matter what kind of heat source is used, the temperature, flow rate and resource pressure difference of the low-temperature hot water ground radiant heating medium should be matched with the heat source system; At the same time, the heat source system should be equipped with corresponding control devices to meet the needs of the operation and regulation of the low-temperature hot water ground radiant heating system.

Floor heating and decoration the same, the early stage of the construction quality is qualified, mainly look at the later stage of the pressure test, floor heating pressure is divided into intermediate links and the end of the acceptance, the middle acceptance is in the coil after the completion of the pressure test, by the floor heating installation company is responsible, and the end of the later acceptance by Party A and its supervision department together with the acceptance, floor heating construction party should prepare construction drawings, design data, material testing reports, product certificates, and intermediate link data records and other documents.

1) The heating pipe should be cleaned and the laying fixation should be checked for floor heating pressure, which is the time of the working pressure of the system.

2. When pressurizing, the water is injected by the water separator, the water injection speed should be slow and pay attention to the gas discharge in the heating pipe, after the system is filled with water, the first thing to check the sealing of each loop is;

3) Move the press machine to increase the pressure slowly, when the pressure is raised to the working pressure, stabilize the pressure for 5min, check whether there is leakage in each loop again, and observe the pressure gauge after the detection is correct. Within 10 minutes, the pressure of the pressure gauge is qualified.

4. Remember to do a good job of pipeline anti-freezing protection when conducting water and floor heating pressure tests in winter.

Precautions should be taken when suppressing.

When the water pressure test conditions cannot be met on site, the air pressure test can be carried out, and the following are the steps and points of the air pressure test.

1) The air pressure test usually uses an air compressor, and like the water pressure, it is also gradually pressurized through the water separator to fill the air, and the tightness of the pipeline is detected when the loop gas is full.

2) When the pressure of the air compressor is increased to the pressure required by the specification, the pressure is stabilized for 5min, and the pressure gauge is checked at the same time, and the pressure gauge is lowered within 55min to be qualified.

Looking at the unit and scale, the general unit is megapascals (mpa).

The general pressure gauge refers to the instrument that uses the spring tube as the sensitive element of the elastic element to measure and indicate the pressure higher than the environment. In the process of industrial process control and technical measurement, mechanical pressure gauges are more and more widely used due to the high mechanical strength and convenient production characteristics of the elastic sensing elements of mechanical pressure gauges. Pressure gauges, vacuum gauges, and pressure gauges with an accuracy class equal to or lower are collectively referred to as general pressure gauges.

The floor heating pressure gauge is generally in the scale position, which is 8 kg. If the pressure drops, you may want to check for a water leak or something.

The pressure of the underfloor heating system should be around bar). Before the pressure test, it is usually necessary to drain the air in the floor heating piping system first, and then use a special pressure test equipment to test the pressure until the pressure reaches about it.

It is important to note that too high or too low pressure test pressure may affect the normal operation of the floor heating system. If the pressure is too high during the pressure test, it may cause water leakage at the pipe connection; If the pressure is too low, there may be a leak or other problem. Therefore, before the pressure test, it is necessary to check whether the posture cover of the pipes, valves, pumps and other components of the floor heating system is damaged to ensure the safety and accuracy of the pressure test.

In addition, it is also necessary to remove the residual air in the system in time after the pressure test to ensure the normal operation of the floor heating system.

Nowadays, floor heating is a very important heating equipment for many northerners, but the installation of floor heating is more complicated, and after the installation of floor heating, it is also necessary to carry out the later pressure test work of floor heating, so how much is the pressure test pressure of floor heating? What should I pay attention to in the pressure test of floor heating? Let's take a look.

1. What is the normal pressure test pressure of floor heating?

The normal pressure test pressure of floor heating is that the floor heating pressure test is to fill the floor heating system with water by using a water pressure pump, and at the same time discharge the air from the system pipeline, and then carry out the pressure test.

2. What should be paid attention to in the pressure test of floor heating?

1. When testing the pressure of floor heating, it is necessary to first flush the water separator, the main supply and return pipes other than the water collector, and then flush the indoor heating system, and carefully check the laying of the indoor heating pipe.

2. Before the floor heating pressure test, it is necessary to safely and effectively protect the pressure test pipes and components.

3. When testing the pressure of floor heating, it is necessary to pay attention to the water injection speed, which should not be too fast, and the tightness of each loop needs to be carefully checked after filling with water.

4. After five minutes of floor heating pressure test, it is necessary to test whether each loop is sealed again, observe the pressure gauge, if the pressure drop is greater than within ten minutes, it is qualified.

5. When the floor heating pressure test is carried out in winter, it is necessary to do a reliable pipeline anti-freezing protection measures, and the water in the pipeline should be blown clean and dried after the floor heating pressure test.

6. Choose the pipes of regular manufacturers, strictly monitor the fixed laying on site, lay a springboard when backfilling the heat storage protective layer, prohibit the ash on the pipe, and lay the wooden board when cutting the tiles, and prohibit making holes in the ground.

7. When using the floor heating system in the second year, it needs to be heated gradually in stages, and if the temperature is adjusted to the highest at one time, it will cause serious damage to the ground material and even the floor.

8. When the pressure of the floor heating is tested for the first time, it is necessary to make up the pressure in time, and it is normal to reduce the pressure by about 2 for the first time.

Summary: How much is the normal pressure test pressure of floor heating, and what needs to be paid attention to in the pressure test of floor heating, it is briefly introduced here, I hope it can help you, if you want to know more exciting content, please continue to pay attention to Qeeka Home.

The normal pressure test pressure of underfloor heating should be between to. During the pressure test, the pressure test time should be kept for no less than 10 minutes, and the pipes and joints should be observed for leakage to ensure that the sealing performance of the floor heating system is good. At the same time, before the pressure test, it is necessary to check whether the pipes and joints are firmly packed and sealed, and remove the air that may be present in the system to ensure the accuracy of the pressure test results.

If it is found that the floor heating system has problems such as leakage or unstable pressure, it should be repaired or replaced in time to ensure the normal operation of the floor heating system.

The normal pressure test pressure of floor heating is generally.

The normal pressure test pressure of floor heating is generally about megapascals). However, the specific pressure value of Fuldser oak needs to be determined according to the design parameters and materials of the floor heating system, and it is recommended that you consult a professional floor heating installation company or relevant technical personnel to ensure the normal operation of the floor heating system. At the same time, in order to ensure safety, it is necessary to operate in strict accordance with relevant regulations when testing pressure, and pay attention to preventing dangers caused by excessive pressure.

The unit of indication on this pressure gauge is: MPA (megapascals). And the maximum range is, that is:

And the dial is divided into 40 scale units, so one scale unit should be: Now the pointer of the pressure gauge points to the position of the fourth scale unit, that is.

Precautions: 1. The instrument must be vertical: a 17mm wrench should be used to tighten it during installation, and the case should not be twisted strongly; Collisions should be avoided during transportation;

2. The instrument should be used in the ambient temperature of -25 55;

3. The vibration frequency of the working environment <25Hz, and the amplitude is not more than 1mm;

4. If the ambient temperature is too high during use, the indicator value of the instrument does not return to the zero position or the indication value is out of tolerance, the rubber plug sealing on the upper part of the case can be cut to make the inner cavity of the instrument communicate with the atmosphere;

There is a pressure gauge on the water separator to see the water separator, and there is no pressure gauge on the water separator, and there should be a pressure gauge on the boiler. Generally, 1 to 2 kg is normal.

Looking at the unit and scale, the general unit is megapascals (mpa).

For example, the property is generally pressed by an air pump for speed, generally 7-8 pressures, and the time is 10-15 minutes, as long as the barometer pointer does not fall, it means that the floor heating is qualified.

But many people ignore a problem, now the suppression is qualified, does not mean that your decoration will not be destroyed, how can you ensure that the decoration process can be noticed at any time to the quality of the floor heating?

This requires the installation of a pressure gauge, which will generally have a pressure gauge for the suppression of residential properties, but this is only for you to suppress, and it will be removed after the suppression. Therefore, when the property is suppressed, you should pay some money and let the suppression personnel keep the pressure gauge for you. **Generally twenty or thirty is OK, some want fifty, don't be too expensive, you buy your own watch and come back to install it yourself.

Or ask the property before suppressing, this pressure gauge is only used to suppress, or keep it for the owner, if it is only used to suppress, you buy a pressure gauge in advance to prepare, remember that there are accessories that need to be installed, otherwise some can not be installed, this ask the hardware store staff understand; When suppressing like this, you can ask the master to put on your watch, and don't unload it.

After the floor heating is qualified, close the valve, always let the floor heating pipe in a state of pressure retention, and then the decoration construction into the site, every other week, you open the valve to see if the pressure of each floor heating pipe is normal, if it is not normal, it can be repaired in time, do not wait for the decoration to find that there is a problem is too late.

This is also the advantage of installing a pressure gauge, you can always know whether the floor heating pipe is damaged because of the decoration process, otherwise blind decoration, after the end of the discovery of the floor heating pipe problem, then the cost of smashing the ground again is laborious and time-consuming, and even there is no wooden floor or tile of the same color, the cost is greater.

Floor heating needs to test the water pressure, how much is the normal water pressure of floor heating? Let me answer them for you today.

Reducing the water pressure of the underfloor heating to less than is qualified.

Floor heating pressure is a key part of the floor heating installation process after the floor heating is backfilled. If the pressure is unqualified, it indicates that the floor heating system has problems such as water leakage and construction failure, and then the construction personnel need to re-investigate and suppress. The specific process of suppression is as follows:

1. Fill the floor heating system with water pressure pump, slowly increase the pressure to or twice the working pressure of the system, and observe whether there is any abnormal situation at any time during the pressure boosting process.

2. There is no leakage after one hour of stable pressure observation, and then continue to observe and observe for 15 minutes, and the pressure drop is qualified. After the initial heating, the temperature is slowly increased, and the water temperature is controlled in the range of 25-30 for about 20 hours, and the water temperature can reach the normal range within 24 hours.