Vertiv | Liebert PEX4 | User Manual 40
Installation
Figure 2-22 Copper Pipe Seal Protection Schematic
3. If other devices, such as globe valve, schrader valve, expansion valve, etc., are located within one meter of
the brazing point on the copper pipe, apply the wet cloth to wrap the devices as a protective treatment, see
Figure 2-23.
Figure 2-23 Copper Pipe Brazing Protection Diagram
4. After brazing, use high-pressure nitrogen blowing pipe to remove the internal pipeline residual dust and
beryllium oxide and other impurities. If the pipeline passes through the wall, soft material should be used
to seal the gaps on the wall around the hole. The soft material also plays a role in the insulation of heat and
absorbs vibration between the wall and the surface of the pipe.
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