APC ACRD200 Specifications download pdf (Page 34)

InRow Fluid Cooled RD Installation26

Rack temperature sensor

The rack temperature sensor monitors and controls the equipment

airflow and ensures an adequate supply of cooling air to the server

racks in the data center.

The equipment is supplied with an external rack temperature

sensor. See “Installation kit inventory” on page 5. This sensor,

along with wire clamps and wire clips, are included in the

installation kit shipped with the equipment.

Installing the rack temperature sensor

Note: Rack temperature sensor installation is not required if the equipment operates in Rack

Air Containment System (RACS) or Hot Aisle Containment System (HACS) mode. For more

information about those systems, see www.apc.com. The InRow configuration requires

temperature sensor installation.

1. Insert the rack temperature sensor connector in the temperature sensor port at the user interface.

See “User interface connections” on page 24.

a. For a top installation, push the rack temperature

sensor through the access hole located at the top

of the equipment.

b. For a bottom installation, route the sensor

through the access hole in the bottom of the

equipment.

2. Route the sensor through either the top or the bottom

of the adjacent server rack.

3. Secure the temperature sensor cable to the front door

of the adjacent server rack at multiple locations using

the provided wire clips as shown. See “Installation kit

inventory” on page 5.

Install the sensor where lack of sufficient cooling air

is most likely. The optimum position of the rack temperature sensor will vary from installation to

installation, but must be located in the airflow to allow proper readings.

Servers most likely to have insufficient or inadequately cooled air due to the recirculation of hot

air from the hot aisle include:

a. Servers positioned at the top of a rack.

b. Servers positioned at any height in the last rack at an open end of a row.

c. Servers positioned behind flow-impairing obstacles such as building elements.

d. Servers positioned in a bank of high-density racks.

e. Servers positioned next to racks with Air Removal Units (ARU).

f. Servers positioned very far from the equipment.

g. Servers positioned very close to the equipment.

gen0744a

gen0767a

Wire clip

Temperature

sensor

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APC ACRD200 Specifications Page 34

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