Compu-aire SYSTEM 2100 Installation, Operation And Maintenance Manual page 9

Air distribution is very important for proper unit operation. Air balancing is required to obtain
design CFM at site. Fan speed can be adjusted from the controller as needed. Several feet of
clearance must be maintained between the supply air and return air intake of the unit. In
existing room, the unit supply air shall be directed towards the air intake side of the heat load.
Always locate air intake of the servers and any other heat load in the cold aisle for efficient air
distribution. The unit supply air shall never be directed towards the exhaust fan of any heat
load in the room.
Down Flow Units:
Down flow units are required to be installed on floor stands. Verify that the raised floor has
been properly sized for the design air flow. The raised floor shall be free of air flow restrictions.
The height of the adjustable floor stand can be raised or lowered through the use of the
adjusting rods. The supply air shall be directed into the cold aisles and avoid any short cycling
of cold air back to the unit return air. Floor stand height for down flow models shall be
selected based on unit CFM, fan size and static pressure requirement. The floor stand must be
securely mounted and all locknuts must be tightened to assure rigidity. See provided floor
stand drawing for installation detail.
Up Flow units: The unit may be placed directly on the sub floor. The up flow unit may have duct
connection or an optional discharge air plenum. Typical up flow unit has front return
configuration but optional rear return with filter box is available.
WARNING
Risk of high-speed moving parts can cause injury or death. Disconnect all local and
remote electric power supplies and make sure blowers are stopped rotating before
working on the unit.
Do not operate up-flow units without installing a supply air plenum, ductwork or
protective guard over the blower openings.
Rev. 01
05/27/2016
Page 9 of 42
Compu-Aire