Vertiv VRC100 - Page 18

6
Vertiv I VRC Self-Contained System I User Manual
In the case that VRC is installed on the bottom of the rack, the minimal cooling capacity are mentioned
below:
Minimum Capacity, kW
Condenser Air Temperature
29.4 °C (85 °F)
35 °C (95 °F)
40 °C (104 °F)
Evaporator Air Temperature to
Cooling Module
(Return Control)
29.4 °C (85 °F)
0.90
0.88
0.86
35 °C (95 °F)
0.92
0.90
0.88
40 °C (104 °F)
0.94
0.92
0.90
Minimum Capacity, kW
Condenser Air Temperature
25 °C (77 °F)
30 °C (86 °F)
35 °C (95 °F)
Evaporator Air Temperature to
IT Devices
(Supply Control)
19 °C (66 °F)
0.89
0.88
0.87
21 °C (70 °F)
0.90
0.89
0.88
23 °C (73 °F)
0.91
0.90
0.89
NOTES:
• Capacity may be reduced with addition of heat rejection ductwork.
• There are two control methods which are supply control and return control. The return control
mode is applied to an open environment, while the supply control mode is applied to an enclosed
cabinet, such as Vertiv’s VRC-S.
• Supply air temperature set point variable between 18 °C (64.4 °F) – 23 °C (73.4 °F). The
recommended supply air temperature set point is 21 °C (69.8 °F).
• When the VRC unit is used in an enclosed cabinet, the heat load should be evenly placed in the
cabinet. And unused rack position should be covered with blanking plates.