Vertiv | SmartCabinet | User Manual 34
System Installation
1. The copper pipe provided by the factory is 5m in length. If longer pipes are required, contact the nearest
Vertiv Co. oice or the respective sales dealer.
2. The liquid pipe functions as the refrigerant liquid pipe of the outdoor unit outlet. So select an appropriate
pipe diameter and length for the pipe to ensure that the pressure drop of the refrigerant liquid through
the pipe during the unit operation doesn’t exceed 40kPa (5psi ~ 6psi).
3. Install and remove the pipe with utmost care in order to prevent it from getting damaged. Use tube
benders and ensure that all the bends are made accurately before connecting to either end.
4. If the jointing mode is required, ensure that all the refrigerant piping connections are made with silver
blazed joints.
5. Check all the piping supports, leakage testing, dehydration of refrigerant pipes, and evacuation before
usage. Use vibration isolation support in order to isolate the refrigeration pipes from the building.
6. Use soft and exible material to pack around the pipes to protect them from damage caused by wall
openings and to reduce vibration transmission.
7. Connect pipes of the indoor and outdoor units based on the labels. The unit adheres to the quick
connection mode.
8. The AC has been charged with appropriate refrigerant before delivery. However, if the connecting pipe
between the outdoor unit and indoor unit is longer than 5m, add the refrigerant to the system to ensure
normal system operation.
Refrigerant must be added in accordance with the following formula:
Refrigerant amount to be added (kg) = Adding refrigerant amount per meter of the liquid pipe (kg/m) ×
total length of the extended liquid pipe (m)
The Table 2-10 shows the refrigerant amount to be added per meter of the liquid pipe.
Total length of the extended liquid pipe (m) = Total length of the liquid pipe (m) – 5m
Table 2-10
Liquid pipe OD (inch) Refrigerant amount per meter (kg/m)
1/4 0.040
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