Vertical Airfl Ow Units; Air Cooled Package Units - Data Aire MINI CEILING SERIES Installation, Operation And Maintenance Manual

Note there are many available unit confi gurations for Mini Ceiling systems. Be sure to
identify the unit type and style before installing. For instance there may be split condenser/
condensing sections requiring separate or shared power.
Note to Installing Contractor: Condensation formation and frequent humidifi er fl ush-
ing are normal functions of this equipment. Proper drain connections must be made
to ensure proper removal. Unit will require water connections for condensate removal
and possibly for humidifi er make-up water, condenser water, chilled water and/or hot
water. Installation of units above equipment that could sustain water damage should
be avoided.
1.3.1 Vertical Airfl ow Units
The evaporator (cooling) section is typically mounted over a standard 2' x 4' T-bar ceiling grid,
supported by four threaded rods. The evaporator (cooling) section will be referred to as the evaporator
section from here on even though the coil on chilled water units is not a true evaporator coil.
Four threaded support rods must be securely attached to the building structure. Raise the evaporator
section with an appropriate lifting device. Attach washers, nuts and jam nuts to each threaded rod.
Tighten the nuts so the weight is supported evenly by the four rods and the unit is level. Be sure
to allow for the depth of the Supply/Return air plenum when calculating the height of the unit above
the ceiling.
The 5" tall vertical Supply/Return plenum assembly is attached to the bottom of the evaporator section
after the evaporator section has been hung. Six screws fasten the plenum to the evaporator section.
The Supply/Return air grilles should be temporarily removed for access. The plenum mounts fl ush
to the ceiling grid.
1.3.2 Air Cooled Packaged Units
Air cooled package units require an additional condenser fan section to be mounted to the end of
the evaporator section at the condenser coil. Place a gasket around the perimeter of the condenser
coil opening. Connect the female motor plug from the condenser blower section to the male plug
inside the evaporator section. Attach the condenser blower section using four (4) self-drilling #10
self drilling sheet metal screws.
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