1. Preliminary preparation

1. Understand the fresh air system: Before you begin to install the fresh air system, you first need to understand the basic principle and function of the fresh air system, as well as the differences between different brands and models of the fresh air system.
2. Choose the right fresh air system: according to the area of the house, the number of floors, the number of residents and other factors, choose the right fresh air system.
3. Determine the installation position: the installation position of the fresh air system has a great impact on the performance and use effect of the system, so it is necessary to determine the appropriate location of the fresh air and exhaust outlet in combination with the actual situation of the house.

Second, the installation process

1. Determine the position of the fresh air outlet and exhaust outlet, and mark it on the wall with a pen and ruler.
2. Cut holes in the wall and install prefabricated metal pipes for the fresh air and exhaust vents. Note that the size of the pipe should match that of the fresh air system.
3. Install the host of the fresh air system. The host should be installed in a place with good ventilation and easy maintenance, such as a balcony or toilet. Fix the host to the wall using screws or other fasteners according to the installation requirements of the host.
4. Connect pipes. Connect the fresh air outlet and exhaust outlet to the main engine to ensure that the pipe connection is tight and there is no leakage.
5. Install air filters. Install a filter at the air inlet to prevent outdoor dust and pollutants from entering the room.
6. Install power cables and control cables. Connect and fix the power and control lines according to the requirements of the power and control lines of the host.
7. Debug the system. Open the fresh air system to check whether all parts work normally, such as whether the fan is running normally, whether the filter is clean, etc.
Third, post-maintenance
1. Replace the filter regularly: The filter is an important part to ensure the normal operation of the fresh air system, and should be replaced regularly to ensure air quality.
2. Regular cleaning and maintenance: Clean and maintain the system regularly to ensure normal running of the system. Pay attention to safety during cleaning and maintenance to avoid dangerous situations such as electric shock.
3. Check the pipeline connection: regularly check whether the pipeline connection is tight, there are no leaks and other problems, and deal with the problems in time to ensure the normal operation of the system.

4. Detailed explanation of specific steps

1. Design stage: Design the installation scheme of fresh air system according to the actual situation and living demand of the house. Including determining the location of the fresh air outlet and exhaust outlet, selecting the appropriate fresh air system model.
2. Material preparation: According to the design plan, prepare the required fresh air system materials and tools, such as pipes, metal pipe interfaces, screws, etc.
3. Installation of fresh air outlet and exhaust outlet: mark the position of fresh air outlet and exhaust outlet on the wall according to the design drawings, use an electric drill or chisel to cut holes in the wall, and then install prefabricated metal pipes. Pay attention to the size and Angle of the pipe to meet the requirements.
4. Fresh air system host installation: According to the installation requirements of the host, the host is fixed on the wall or other places. The host should be installed in a place with good ventilation and easy maintenance, such as a balcony or toilet. Use screws or other fasteners to fix the host to the wall and connect the power and control lines.
5. Pipeline connection: Connect the fresh air outlet and exhaust outlet with the host, and use a special pipeline connection piece to connect the pipeline tightly and without leakage. Note that the length and curvature of the pipe should meet the requirements to ensure smooth air circulation.
6. Air filter installation: Install a air filter at the air inlet to prevent outdoor dust and pollutants from entering the room. The filter should be replaced regularly to ensure air quality.
7. System debugging: Open the fresh air system and check whether all parts work normally. Such as whether the fan is running normally, whether the filter is clean and so on. If any abnormal situation should be handled in time.
8. Acceptance stage: After the installation of the fresh air system is completed, acceptance is carried out. Check whether each part is installed correctly and works normally. If any problem should be dealt with in time and re-acceptance. After acceptance, the fresh air system can be officially used.