What should be paid attention to when household central air conditioner is accepted?

As the central air conditioner compares with the branch air conditioner, the cooling effect is more rapid and uniform, and it is more space-saving and more fashionable. The main thing is that it has a long service life. More and more people are choosing more efficient and comfortable central air-conditioning for cooling. Central air-conditioning is divided into three products and seven points of installation. Installation is the key. So, how do the industry leaders check and accept after the installation of the new home decoration household central air conditioner? Quntan editor came to tell you about the main points of the acceptance of household central air-conditioning installation. Shanghai air conditioning design

1. Check whether the installation location is appropriate

The installation location of the household series central air conditioner is very elegant. Failure to install it will cause future maintenance or poor cooling/heating effect of the air conditioner. The installation of indoor and outdoor units must be level and firm. When there are many outdoor units connected together, they must be aligned, spaced, aligned in direction, and coordinated in height. Shanghai air conditioning design

The bottom plane of the outdoor unit should be more than 10cm above the ground, and 4 iron expansion bolts should be used to fix it on the cement pier, or 4 bolts should be fixed on the base made of channel steel, which are separated from obstacles in the front, back, left, and right. The distance and the smaller distance between the outdoor unit and the outdoor unit must be greater than its allowable smaller distance. In addition, it is necessary to avoid places such as heavy oil fume, heavy wind and sand, direct sunlight, etc., and the device support preferably has an operating space that is convenient for safe installation and maintenance. Air conditioning maintenance

The indoor unit is hung with 4 round steel bolts, and its upper and lower adjustable range is 4 to 5 cm, and the fuselage should be 1.8 to 2.2 meters above the ground. There are no obstacles around the air outlet of the inner unit. There must be a certain distance between the air inlet and outlet of the indoor unit and the wall, smoke pipes, lamps, computers, radio and other equipment. When installing the same indoor unit in the same unit, pay attention to the symmetry of the front and back. Air conditioning maintenance

Second, check whether the pipeline installation is standardized

The steel pipes, water pipes, signal line pipes and power line pipes used when installing the central air conditioner should be horizontal and vertical. In order to ensure the use effect, the actual piping length of each independent refrigerant system, the equivalent piping length, the height difference between the indoor unit and the outdoor unit, the indoor unit and the indoor unit, the piping length after the branch, the refrigerant branch and the selection of piping All must strictly follow the relevant regulations. Shanghai Central Air Conditioning Project

The power cord of the outdoor unit is a three-phase five-wire system, and the power cord of the indoor unit is a single-phase three-wire system. The power cord of the indoor and outdoor units can only use copper wire, and the allowable current must be greater than or equal to the rated current during normal operation. In the same system, only one power switch can be used, but the capacity specifications of the switch and circuit breaker must be strictly selected. The components and materials used in the power distribution construction and electrical operations must comply with local regulations. The indoor and outdoor units must be grounded reliably. The power cords of the indoor and outdoor units should be protected by copper pipes, and a rubber metal hose should be used to connect to the machine very close to the machine. Shanghai Central Air Conditioning Project

3. Pay attention to whether the materials meet the requirements

The materials used when installing the central air conditioner must have a certain anti-corrosion effect. The exhaust duct must be made of non-combustible or non-combustible materials, and the air-conditioning accessories must not use materials that are harmful to the human body. There are many auxiliary materials for the installation of household central air-conditioning, such as copper pipes, water pipes, line number pipes, drain pipes, power cords, etc. A series of installation materials, the owner should remember to check whether there is a shoddy condition. Shanghai Central Air Conditioning Project

Fourth, whether the test effect is up to standard

After the installation of the household central air-conditioning project, the effect test should be carried out, including whether the central air-conditioning outlet has cold/hot air, and the temperature change of the central air-conditioning should be recorded every two hours. This debugging is more scientific and objective. Shanghai Central Air Conditioning Project

At the same time, check whether there is refrigerant = refrigerant leakage in each part of the air-conditioning system to ensure that the air tightness is good. Check the refrigerant leakage before testing the machine. Leak detection is mainly aimed at the 4 ports of the internal and external machine connecting pipes of the air conditioner and the valve ports of the shut-off valve. Soapy water (dish soap can also be used) is one of the common methods used on site. Apply soapy water to the suspected leak. If bubbles are formed, there will be leakage. Observe if there are no bubbles for 3 minutes. Think qualified. After the air conditioner is installed, test the machine (refrigeration) immediately. If there is no water leakage during a certain period of operation, there will be basically no water leakage problem. Of course, you can also require the installer to conduct a water leakage test, and introduce water into the internal machine. It is normal that the water flows out of the outdoor through the internal drip tray and the downpipe. Shanghai air conditioning design

In addition, it is necessary to test the noise situation. The household central air conditioner will make a certain noise when it is running, but its noise must be less than 48 decibels. If the noise is too loud, it is likely to be caused by improper installation. Shanghai air conditioning design