Do you know the key "3, 5, 8" in the installation of central air conditioning fluorine system?

Do you know the key "3, 5, 8" in the installation of central air conditioning fluorine system?

Central air-conditioning creates a high-quality home life for us. Before installing central air-conditioning, we must make preparations for purchase, design and installation in advance, so as to be well aware of and avoid blindness.

Installation stage: central air conditioning has to go through 3 installation stages

　　The central air-conditioning installation stage mainly includes three stages. The first stage is on-site positioning to determine the design and construction plan.

　　 The second phase of the concealed project is completed before the installation of water and electricity. The central air-conditioning indoor unit is hoisted, and the indoor unit is protected from dust with plastic wrap and other devices to prevent dust and impurities from entering the host and affecting the operation of parts. It is also necessary to install pipes, refrigerant pipes, condensate pipes, signal lines and other operations.

　　 After the third-stage interior decoration is completed, the central air conditioning outdoor unit, vents, and controllers are installed, filled with refrigerant, and the pressure test of the central air conditioning system is done. Measure the size and position of the tuyere, complete the installation of the tuyere, and complete the final commissioning of the equipment operation to ensure the stable operation of the system and complete the delivery.

　　Installation materials: 5 key auxiliary materials can not be neglected

　　 Refrigerant copper pipe. The operating condition of the refrigerant of the central air conditioner directly determines the effect of use, and the quality of the refrigerant copper pipe is very important. The internal pressure of the traditional R22 refrigerant (Freon) is lower than that of the new R410 refrigerant. The central air conditioner using the new refrigerant needs to choose a higher quality refrigerant copper tube. When choosing a copper pipe, it depends on whether the pipe wall thickness is uniform and whether it can withstand higher pressure.

　　 Copper pipe insulation. In addition to preventing temperature loss, the air-conditioning copper pipe insulation cotton can also prevent the aging of the air-conditioning copper pipe.

　　 The condensate pipe is hidden in the suspended ceiling and will be closed at the end. Although the quality of the air conditioner will not affect the use of the air conditioner, once it leaks, the consequences will be serious and require a large area to be removed and repaired.

　　 Outlet. There are two common tuyere materials: ABS tuyere and aluminum alloy tuyere. The ABS air outlet is made of ABS engineering materials, which is not easy to condense. The air outlet will not drip during cooling, but the material has a certain coefficient of thermal expansion and contraction, which may make a squeak during use; aluminum alloy air outlets have the advantage of not being easy to deform , Not easy to change color. However, because the heat transfer rate of aluminum alloy is very fast, it is easy to condense during summer use. The two types of air outlets have their own characteristics and can be selected according to their needs.

　　 signal line. Due to the increasing number of electrical appliances in the modern home environment, excessive electromagnetic radiation may affect the controller between the indoor unit and the outdoor unit of the central air conditioner, causing the controller to malfunction. The signal wire of the central air conditioner must be shielded wire, and cannot be replaced by ordinary cables.

　　 Installation specification: 8 steps to get it right

　　Internal machine in place

　　 When hoisting the indoor unit, pay attention that the distance between the inner unit and the roof should not be less than 1 cm to avoid resonance with the wall when the machine is running. The internal machine must be hoisted horizontally. After installation, special tools need to be used to measure whether the machine is level.

　　Install refrigerant copper pipe

　　After installing the internal unit, you can install the refrigerant copper pipe, which is the most important part of the central air-conditioning installation process.

　　 Nitrogen filling and pressure keeping

　　 After the copper pipe is installed, a pressure test is required. Fill the copper pipe with a certain pressure of nitrogen to maintain the pressure. The general pressure test time is 24 hours.

　　 install condensate pipe

　　 When installing the condensate pipe, select the diameter of the condensate pipe according to the equipment model. The condensate pipe needs to maintain a drainage slope of >1%.

　　Install outdoor unit

　　 When installing the outdoor unit, the air outlet of the fan must be free from obstructions, and all floor feet must be equipped with shock absorbers to ensure the normal operation of the outdoor unit.

Vacuum

　　After the outdoor unit is installed, it is necessary to vacuumize the refrigerant tube before filling the refrigerant to extract the air in the tube to keep the tube dry and free of moisture.

　　 fill with refrigerant

　　 Open the refrigerant valve to release the refrigerant that comes with the external machine, start the test and check the pressure, and make appropriate supplements until the debugging is completed and the ideal working state is reached.

　　 install tuyere

　　 Usually the return air vent is installed together with the inspection opening. The size of the air vent must be the same as the return air vent of the internal machine, and there can be no misalignment, so that the best return air volume can be achieved and sufficient maintenance space is guaranteed.

　　The importance of design, installation and construction is no less important than the quality of air conditioning equipment. Three points of equipment, seven points of installation, installation of a guaranteed system for later use and operation more assured.