APC NetworkAIR Rack Air Removal Unit ACF102BLK - Manual (Page 15)

Operation
NetworkAIR Rack Air Removal Unit Installation 11
To check operation of the unit:
5. Apply power to the fans by turning the fan speed selector from the OFF position to one of the
four exhaust temperature settings.
6. Make sure the fans are moving.
7. Turn off the power to the unit.
How to set the fans based on wattage
Determine the wattage of your equipment and set the fan speed selector to the corresponding kW
setting.
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Temperature override
The kW settings on the fan speed selector run the fans at a constant speed, while the exhaust
temperature settings adjust the fan speed depending on the exhaust temperature of the equipment in
the rack. The Rack Air Removal Unit is equipped with a temperature override that protects the
equipment in the rack while the unit is in kW mode. If the unit is in kW mode, and the exhaust
temperature rises above 40.5° C (105° F) (the override setpoint), the unit increases the fan speed to
remove excess heat from the rack.
Note
If no air is flowing from the Rack Air Removal Unit, check the power connection.
Warning
Setting the kW setpoint too low could damage the equipment in the enclosure. If
the amount of kW in your enclosure falls between two of the numbers on the
setpoint dial, choose the higher number or set based on exhaust temperature.
Note
When the temperature override is enabled and the temperature in the rack rises above
40.5° C (105° F), the Rack Air Removal Unit will automatically increase the fan speed
to bring the temperature below 40.5° C (105° F).
Warning
When in kW mode and using a UPS that is 3000VA or lower, disable the
temperature override to prevent the power draw from exceeding the limitations
of the UPS.
The UPS should not be loaded above 80% when using the Rack Air Removal
Unit.
C
35
5
3
2
6
OFF
32
29.5
kW
38