There is a saying in the fresh air system in the industry that "three points are about products, seven points are about installation", which shows the importance of installation.

Next, let's talk about the installation of fresh air system step by step.

the installation of fresh air in ceiling is a complicated project.

1. air volume.

first of all, choose the appropriate air volume. There are special algorithms and standards. The simplest thing is to use 151 air volume according to the area. It is recommended to use 251 air volume for those whose practical area is less than 61 square meters, and 351 air volume for those who are 61-81 square meters.

if the usable area exceeds 1.21 square meters, it is recommended that multiple machines be matched.

in principle, the air volume of the household fresh air system should not exceed 351, otherwise the noise will be relatively large, which will affect daily life.

2. air return mode

air return mode can be divided into two modes: ground delivery and top delivery. Relatively speaking, the price of ground delivery and top delivery is higher, so it is generally enough to use top delivery and top delivery at home.

3. preparation for admission

admission time: fresh air system should be installed before and after water and electricity

and central air conditioning: both fresh air system and central air conditioning need pipelines, and the pipelines of both sides will definitely cross, so it is best to plan the pipelines in advance. If central air conditioning has been installed, it doesn't matter. Professional fresh air installation team can effectively avoid this area.

4. Tool preparation

Tools are divided into installation tools: chainsaws, saws, plug rows, etc.

drilling tools: metal detector, diamond;

5. Material standard

PVC pipes can be used, and brand pipes of Zhongcai and Liansu are selected;

elbow: 45 elbow is preferred;

three links: give priority to using the three links along the river;

others: pipes and fittings are of the same brand;

6. Installation of fresh air main unit

Fresh air main unit is generally installed in kitchen, bathroom, balcony and other places.

kitchen location: the outdoor air inlet and outlet of fresh air should be kept away from the exhaust outlet of gas water heater 1 meters away

bathroom location: fresh air main engine and pipeline should be kept away from the yuba location

balcony location: whether there is any conflict in the later stage of drying rack should be considered

a distance of 1-2 cm should be reserved between fresh air main engine and ceiling

411mm access openings should be reserved on both sides of the ceiling fresh air machine

fresh air main engine and pipeline.

Keep the distance between them above 1.5m

Install a rain cap at the nozzle

Pipe diameter: try to connect the pipe corners with a three-way pipe

Try to connect with a 45 elbow

8. Pre-debug

After the machine installation and pipe construction, debug the fresh air to ensure that the noise and air volume can meet the standards;

9. finished product protection

the new tuyere and exhaust outlet shall be sealed to prevent sundries from entering the pipeline.