Vertiv™ | Liebert® SRC-G | User Manual
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Mechanical Installation
carefully insulated. Contact Vertiv technical personnel before selecting the location for control pane.
4. Its recommended terminate incoming power in control panel via external isolation in proximity of control panel
(refer Figure 2-7). This isolation in case of isolation switch shall comply to IEC60204-1 (black -white color
scheme). Incase of rotary switch, same shall comply to IEC60947-3 utilization AC-23 or DC23B. Following table
provides rating for this isolation.
Unit Isolation rating
SRC03GES 3Pole, 16A
SRC07GES 3Pole, 25A
SRC07GET 5Pole, 16A
SRC11GET 5Pole, 32A
2.10. Charging Refrigerant
• System Vacuuming
1. After the refrigeration piping are installed and connected, ensure the service valves of outdoor unit are firmly
closed.
2. Then connect the high and low pressure composite pressure gauge (Manifold) to the Schrader valve at the
liquid piping of indoor unit that can be easily accessed from a front service window.
3. Evacuate system twice to 1500 microns and then finally to 500 microns. Break vacuum each time with 50 gm
of clean and dry R410A refrigerant.
4. Open service valve of outdoor units.
• Ensure to remove all the pressure gauges (manifold) from the indoor unit after vacuuming is completed.
• Ensure to open the service valve of the condensing unit.
• After the mechanical installation, electrical installation, and pre-commissioning inspection of the unit is
completed, then only turned on the unit.
2.10.1. Base Charging of Refrigerant
The indoor unit is factory charged and the recommended standard refrigerant amount (kg) of the unit is shown
in Table 2-11.
Table 2-11 Recommended Standard Refrigerant Amount of the Unit (unit: kg)
Unit Model SRC03GES SRC07GES SRC07GET SRC11GET
Standard charge
(standard pipe length within 10 m)
1.5 2.5 2.4 3.3
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