Connecting the Copper pipes between the Indoor and Outdoor unit
The indoor and outdoor units are connected through welded copper pipes. Considering the effect of the pipe diameter
on the system pressure drop, the pipe diameter of the indoor unit and outdoor unit should be determined by the
specifications mentioned in table 2-5. Alternatively, contact the Vertiv support office to seek the help of the technician
for gauging the length and diameter.
Table 2-5 (unit: mm)
1. A pipe extension kit is required for Equivalent Length marked with *.
2. D: Discharge line; L: Liquid Line
3. Consult Vertiv. If the pipe length exceeds 50m or 30m.
4. If the outdoor environment temperature is lower than - -15°C, a low-temperature kit is needed, please consult
Vertiv Tech Co., Ltd.
The unit has refrigerating pipe connectors and labels on its top and bottom as shown in Figure 2-20 and Figure 2-21.
During welding, do not burn the labels. The labels assist and point out the connections to the discharge pipe and
liquid pipe of the indoor unit. The horizontal sections of the discharge pipes must be tilted downwards from the
compressor with a slope of at least 1:200 (5mm down for every 1m run). The discharge pipes must be insulated from
heat at the location they are routed in the conditioned space (including the raised floor).
Figure 2-20 Top pipe connectors
Figure 2-21 Bottom Pipe connectors
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