Huawei FusionModule800 Quick Manual page 16

7
Installing the Refrigerant Pipes
7.1
Laying Out Pipes
1. The height deviation refers to the distance from the stop valves of the indoor unit to the stop
valves of the outdoor unit.
2. is a sign of a tilt, and it indicates that the scale of the pipe tilt is at least 1:200. The pipe
tilt direction should be consistent with the hypotenuse of the right triangle.
3. The refrigerant pipe should be wrapped with thermal insulation foam.
4. Keep the pipe dry during welding.
5. After the pipe between the indoor and outdoor units are welded, blow nitrogen from one end
into the pipe to clear foreign matter.
6. The welded joints cannot be exposed for a long period of time and must be sealed. If there is
foreign matter at the welding joints, clean the joints using anhydrous alcohol or a wet cloth,
and wait for the joints to dry up before welding.
7. Face-down bonding is forbidden.
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