More and more modern families are installing central air conditioning, especially some large houses and villas, because central air conditioning is more rapid and uniform than extension air conditioning, and it is more space-saving, more fashionable, and the most important thing is that its service life is very long.
But the installation of central air conditioning, need to pay attention to the problems are relatively more, today Xiaobian will tell you about the installation and acceptance method of central air conditioning, interested in central air conditioning partners may wish to take a look.
1. Check whether the installation location is appropriate
The installation location of the household series central air conditioner is very elegant, and if it is not installed well, it will cause future maintenance or poor cooling / heating effect of the air conditioner. The installation of indoor and outdoor units must be horizontal and firm, and when there are more outdoor units connected together, they must be discharged accurately, evenly spaced, oriented in the same direction, and coordinated in height.
The bottom plane of the outdoor unit should be more than 10cm above the ground, and should be fixed on the cement pier with 4 iron expansion bolts, or fixed on the base made of channel steel with 4 bolts, and the distance between the front and back and the left and right sides from the obstacle and the minimum distance between the outdoor unit and the outdoor unit must be greater than the minimum distance it allows.
In addition, it is necessary to avoid places such as heavy oil smoke, strong wind and sand, direct sunlight, etc., and it is best to have an operating space that is convenient for safe installation and maintenance.
The indoor unit is hung with 4 round steel bolts, which can be adjusted up and down in a range of 4~5 cm, the fuselage is 1.8~2.2 meters from the ground, and there are no obstacles around the air outlet of the internal unit.
There should be a certain distance from the air inlet and outlet of the indoor unit to the wall, smoke pipe, lamp, computer, radio and other equipment, and it is necessary to pay attention to the symmetry of the front and back when installing the same indoor unit in the same unit.
2. Check whether the pipeline installation is standardized
The direction of the steel pipes, water pipes, signal pipes, and power pipes used in the installation of central air conditioning should be horizontal and vertical.
In order to ensure the use effect, the actual piping length, equivalent piping length, height difference between indoor unit and outdoor unit, indoor unit and indoor unit, and the selection of piping length after branching, refrigerant branch and piping must be carried out in strict accordance with relevant regulations.
The power cord of the outdoor unit is a three-phase five-wire system, the power cord of the indoor unit is a single-phase three-wire system, and the power cord of the indoor and outdoor unit can only use copper wires, and the allowable current must be greater than or equal to the rated current when it is working normally.
In the same system, only one power switch can be used, but the capacity specifications of the switching circuit breaker must be strictly selected, and the components and materials used in the power distribution construction, as well as the electrical work, must comply with local regulations. The indoor and outdoor units must be reliably grounded, and the power cords of the indoor and outdoor units should be protected by copper pipes, and the rubber metal hoses should be connected to the machine very close to the machine.
3. Pay attention to whether the materials meet the requirements
The materials used in the installation of central air conditioning must have a certain anti-corrosion effect, the exhaust pipe must be made of non-combustible materials or non-combustible materials, and the air conditioning accessories shall 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, wire number pipes, drainage pipes, power cords, etc.
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 transmission, and the temperature change of the central air conditioning every two hours should be recorded, so that the debugging is more scientific and objective.
At the same time, it is necessary to check whether there is any refrigerant = refrigerant leakage in each part of the air conditioning system to ensure that the sealing is good.
Refrigerant leak inspection should be carried out before commissioning. The leak detection is mainly for the 4 interfaces of the internal and external machine connections of the air conditioner and the shut-off valve valve port. Soapy water (dish soap can also be used) leak detection is one of the commonly used methods on site, apply soapy water at the suspicious point of leakage, if there is a bubble formation, there is a leak, and observe for 3 minutes without bubbles, it can be considered qualified.
After the air conditioner is installed, test the machine (refrigeration) immediately, if there is no water droplet leakage after a certain period of operation, there will be basically no water leakage problem. Of course, you can also ask the installer to carry out a water leakage inspection, introduce water into the machine, and it is normal for the water to flow out of the outdoor naturally through the water tray and downspout in the machine.
Also, test the noise situation. When the household central air conditioner is running, it will make a certain amount of noise, and if the noise is too loud, it is likely to be caused by improper installation.