Summary post: What are the common problems of floor heating?

1. Do Shanghai and East China need heating?

Although the temperature in winter in Shanghai is not very low, it is easy to feel unbearable cold because of the high air humidity and the large heat loss of human body, and sometimes it even feels colder indoors than outdoors. This kind of climate easily affects the growth of children and induces diseases of the elderly. Compared with foreign countries, cities with similar climate to Shanghai have heating. Throughout history, buildings, new alleys and villas in old Shanghai also have heating facilities. Limited by the national HVAC design since the founding of the People's Republic of China, there has been no heating in civil houses. Now with the adjustment of national policies and the improvement of residents' living standards, heating has become a necessity for high-quality life. Therefore, heating in Shanghai and East China is necessary.

2. What is the best heating method at present?

Decades of heating experience in developed countries has proved that the best method is ground radiation heating. The temperature distribution of floor heating is low and high, which meets the physiological needs of human body to keep feet warm and head cold. It feels the most comfortable and has incomparable advantages over other heating methods. It is recognized as the most scientific, reasonable, comfortable, healthy, economical and energy-saving heating method. In addition, floor heating has many advantages, such as safety, durability, environmental protection, economy, easy management, maintenance-free, property appreciation and so on. Floor heating is rapidly popularized in China and has become the first choice for many families pursuing high-quality life.

3. What are the methods of floor heating?

At present, there are two mature floor heating methods: one is heating cable floor heating system, and the other is hot water floor heating system. Both methods have their own characteristics. From the cost performance of the system and the experience of developed countries, the heating cable floor heating system is an ideal choice.

4. Is it healthy to use the floor heating system?

Of course it's good for health. First of all, at present, the thermal sensation of the floor heating system is from bottom to top, which conforms to the theory of "warm from the feet" in the theory of traditional Chinese medicine, making people feel comfortable all over, and is more beneficial to diseases such as arthritis and old cold legs that are common in the elderly. At the same time, it eliminates the disadvantages of hot air, noise, dryness, bacterial spread and so on brought by heating equipment such as air conditioner.

Secondly, the far-infrared wavelength of floor heating is between 8 μm- 13 μm, which only stimulates 2mm acupuncture points on the skin surface, which is called "temperature-sensitive point", making people feel mild somatosensory, giving people the feeling of natural warmth in the sun, and can strengthen their health.

Thirdly, because the heat rises from the ground, rather than the thermal cycle of air conditioners and electric heaters, it is very beneficial to asthma patients and is recommended by asthma foundations in many countries.

5. What is the installed power per square meter?

According to the conditions of the place of use and the different temperature requirements of users, the installation power of indoor places is generally 80 W/m2- 160 W/m2.

6. After the floor heating is laid, how much should the floor of the room be raised?

If the composite floor is used, the height of the composite floor will be 2 cm-3 cm higher than that of the ordinary floor, because the ground insulation layer will be laid and covered with cement layer for heat storage and leveling. If you use solid wood flooring, the heating cable will be laid in the keel under the wooden floor, and the ground will basically not bulge.

7. At what stage is the floor heating installation suitable and how long does it take?

As long as the construction period is two or three days, the installation is usually carried out after the completion of the hydropower process. In addition, the laying of the floor heating system should be coordinated with the decoration company to ensure the construction quality of the floor heating system.

8. After installing the floor heating system, how should I choose the wooden floor?

According to the comprehensive determination of heat transfer effect and thermal stability, the surface material above the floor heating system should be the first choice of solid wood composite floor (among which the special heating floor is the best), followed by strengthened floor. Generally speaking, those tree species with light weight, dry shrinkage and good thermal stability are more suitable for floor heating system. But no matter what kind of floor is used, its water content index should be below 12%.

In addition, we should choose the floor with high density, good stability of base material and good environmental protection performance, and choose the products of famous and powerful manufacturers. Of course, it is best to use the wooden floor dedicated to floor heating, and the manufacturer promises to apply it to floor heating.

9. How high can the floor heating reach?

According to the different floor materials, the electric floor heating system installed in different places such as bathroom, living room and bedroom can reach the floor temperature of 25℃ ~ 35℃, but the actual air temperature (room temperature) in this place depends on the overall heat insulation performance and heat loss of the room. Under a certain power configuration, the better the overall thermal insulation performance, the less the heat loss, the smaller the environmental temperature difference, and the higher the achievable room temperature. Therefore, we suggest that the room with electric floor heating system should be renovated for wall insulation, and double-layer hollow glass windows should be used to reduce heat loss. Generally, when the room temperature reaches 18-2 1℃, the comfort required by the overall heating can be guaranteed.

The maximum working temperature of the heating cable itself is about 65℃.

10 How to control the floor heating system?

The floor heating system uses a thermostat for on-off control and temperature adjustment. The thermostat is composed of high-precision electronic components, with automatic temperature setting function, beautiful appearance and simple operation. The digital liquid crystal thermostat can automatically control the temperature according to the programming, and preset the temperature in different time periods every day and week to realize energy-saving intelligence.

It is suggested that in the daily use of heating season, it is best not to switch on and off frequently, so that the electronic thermostat can automatically adjust and control, which can save energy.

1 1. If the floor heating system heats the composite floor for a long time, will it affect the performance of the floor?

The qualified composite floor is pressed at high temperature, and the internal moisture content is very small, so it will not be deformed due to the loss of moisture. Moreover, the surface temperature of the geothermal system is generally below 30 degrees Celsius, so that the indoor temperature can reach about 20-25 degrees Celsius, which is similar to the temperature of most families in summer. The temperature of the composite floor when it is irradiated by the sun is sometimes higher than this temperature, so heating itself has no effect on the qualified composite floor.

12、? What is the power consumption of electric floor heating system?

The power consumption of the system depends on the installation power, the thermal insulation performance of the building itself and the thermal insulation performance of the room (such as whether the floor heating system has integrated corner insulation and wall insulation). The better the heat preservation, the more electricity will be saved indoors, and the higher the outdoor temperature, the more electricity will be saved. The user's personal habits also determine the electricity consumption. The electric floor heating system will determine the required working power of each room according to the comprehensive factors such as the owner's use area, room orientation, thermal insulation, users' personal habits, ground auxiliary materials, etc., and will not cause energy waste or insufficient working power. Generally speaking, the installation power of indoor places is 80- 160W/ square, and in most cases it is about 120W/ square. When the temperature reaches the set value, it will automatically stop heating and enter the state of heat preservation and energy saving.

Under the current domestic building standards, the electricity consumption of electric floor heating system in Shanghai area in heating season is generally 0.5-0.7 degrees/square meter /24 hours. If the thermal insulation performance of the building is good or the intelligent electronic thermostat is selected, this energy consumption value can be further reduced.

13. How long is the service life of electric floor heating?

The service life of temperature heating cable is at least 50 years. In fact, the heating cable installed in the concrete layer is no different from the wire buried in the wall. Did you remember to replace the wires on the wall? In fact, you hardly realize the existence of these wires. Therefore, it can be considered that the floor heating system is basically equivalent to the life of the building.

14. If there is something wrong with the heating cable in concrete, how to repair it?

Once the heating cable is installed correctly according to the instructions, the probability of working failure is very small. If there is a problem, it is usually due to external mechanical damage, such as cable damage caused by screws driving into the concrete layer. In this case, the fault location can be determined immediately, the concrete in this area can be removed, the damaged part of the cable can be cut, and then the cable can be connected, repaired and insulated by special repair materials. In other more complicated cases, professional instruments can be used to confirm the fault location and carry out maintenance.

15. Is electric floor heating safe?

First of all, in terms of cable structure, the heating element should be insulated first, then coated with tinned copper wire for grounding protection, and then coated with aluminum metal sleeve to keep continuous and lasting contact with the grounding conductor to eliminate electromagnetic radiation and enhance the waterproof performance and mechanical strength of the cable. Finally, the insulating layer is used for external protection. This multi-layer insulation structure ensures the safety and reliability of our heating cable.

Finally, our heating cable is laid in a 2-3 cm thick cement layer, which further ensures the safety of use.

16. Will floor heating increase the release of harmful substances such as formaldehyde?

In international standards, the formaldehyde emission standard of composite floor is very strict, which absolutely meets the requirements of environmental protection, and its index itself is far lower than that of decorative materials such as large core boards. The temperature change of geothermal system does not exceed the indoor normal temperature range, so as long as the floor that meets international standards is selected, the formaldehyde emission of the floor will not increase.

17. Can electric floor heating be used in wet rooms?

Of course. The heating cable is waterproof and has undergone strict insulation test before leaving the factory. In fact, in northern Europe, where the ground is often wet, such as toilets, electric floor heating is the first choice for heating. If floor heating is not used in these places, the human body in contact with it will feel cold.

18, will the electric floor heating system produce harmful electromagnetic radiation areas?

All electrical equipment (such as TV, mobile phone) will have electromagnetic radiation when used. As long as the electromagnetic radiation is controlled within the national standards, it will not have a negative impact on the human body. Our heating cable is shielded by grounding copper conductor and aluminum sheath to eliminate electromagnetic field. Moreover, the cable has passed the electromagnetic radiation test of professional testing institutions, and the electromagnetic radiation generated by the system is far less than the existing standard value of health requirements. So you can use it safely. ?

19. When is the appropriate construction stage for floor heating and how long will it take?

Floor heating can be carried out after the completion of hydropower transformation, or combined with water decoration and strong and weak electricity system transformation. For a flat-floor house with simple control of about1.20m2, the construction period of floor heating is 2-3 days, and the maintenance period of backfill layer will be different according to different seasons: for the penthouse with high control system requirements, the construction period will take about one week, and the maintenance period of backfill layer will be different according to different seasons. In addition, when laying the floor heating system, great care should be taken not to be damaged by the subsequent decoration construction.

20. Will the underground heating pipe leak and how to maintain it?

Burying underground pipes for floor heating is a concealed project, with no external mechanical damage and no water leakage. If the buried pipe is damaged by external force (such as nailing or high-temperature heat source) during decoration and use, you should immediately contact the construction unit or manufacturer, and professionals will arrive in time to confirm the fault location and carry out professional maintenance to minimize the economic losses of customers.

2 1. Will the floor be uneven or extremely hot locally?

According to the insulation, heat dissipation, room function, furniture layout, floor material selection and adjustable heat source of different rooms, the floor heating system is designed in a targeted manner to prevent local supercooling or overheating, and different rooms can achieve comfortable and satisfactory temperatures by adopting different control systems. At present, many users ask the floor heating company to reduce the buried pipe spacing because they are worried that the temperature will not be enough in the future. Many companies blindly cater to users' ideas, resulting in too dense heating pipes and high indoor temperature in whole or in part.