1. First, connect the power cord of the host computer from the switch box; When there is no special requirement for the power cord, 1.5 square wire shall be adopted.

2. Hoist the main engine to the designated position with a screw, which shall be straight, flat and stable.

3. Communicate with the staff of air conditioners, distribution pipelines and other facilities, re-determine whether the on-site pipelines are unblocked, whether the tuyere position affects other facilities, and fine-tune the drawings.

4. Install the piping system, and install an elevator for the hard pipe every 150cm. Pipes should be horizontal and vertical, and each joint should be coated with PVC glue. In the area with hoses in the pipeline, an elevator shall be installed every 70cm, and the elevator bolts shall be long bolts.

5. The nozzle of the downdraft is flush with the ceiling, and the side draft is flush with the wall. After installation, the nozzle does not need to be cut, and finally the tuyere is directly installed.

6, the connection between the pipeline and the host; The pipeline selected for this project is connected with the inlet and outlet of the main engine with variable diameter or funnel-shaped head, and the joint is fixed with tin foil tape. Requirements: The adhesive tape should be pasted flat and wrinkle-free, the joint should be tightly wrapped and airtight, and the tin foil joint should be fixed with tie straps.

7. See whether to add an oblique tee between the main engine and the exhaust port according to the drawing, and leave an exhaust port for the ventilator.

8. After the installation of the main engine and pipeline system, contact the site electrician to determine the cable requirements and the installation position of the switch, and follow up by telephone.

9. After the installation of the main engine and pipeline, communicate with the carpenters on site, and put forward the data, location and telephone tracking of the installation manhole.

10. In case of window installation, you should also communicate with relevant personnel by telephone to put forward requirements and follow up after the installation of the host and pipeline is completed.

1 1. After the renovation of the main body of the project is completed, go to the installation tuyere to check the working condition of the main engine;