6
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!
CAUTION
If outside air is in contact with the bottom
of the unit, the unit must have the bottom
insulation option or be field insulated.
DO NOT DRILL OR PUNCH HOLES IN BASE
OF UNIT FROM INSIDE THE UNIT OR FROM
BELOW TO ATTACH DUCTWORK. LEAKING
MAY OCCUR IF UNIT BASE IS PUNCTURED.
INSTALLATION
AAON rooftop units are designed for fast, easy installa-
tion. The curb is mounted first and must be located so
that duct connections will be clear of structural mem-
bers of the building.
SETTING THE CURB
When using the factory curb, make openings in roof
decking large enough to allow for duct penetrations and
workspace only. Do not make openings larger than
necessary. Set the curb to coincide with the openings.
Make sure the curb is level.
SETTING THE UNIT
If cables or chains are used to hoist the unit they must be
the same length and care should be taken to prevent
damage to the cabinet / coils or condenser fans.
It is recommended lifting the unit with the outside air
hood in the downward shipping position, however the
unit may be lifted with the outside air hood in the open
position.
Before lifting unit, be sure that all shipping material has
been removed from unit. Secure hooks and cables at all
marked lifting points / lugs provided on the unit.
SEE UNIT LIFTING INSTRUCTION DETAIL AT THE
REAR OF THIS MANUAL.
NOTE: Some applications may require the unit to be
built and shipped in two seperate sections.
See "Unit Section Splicing" instructions page for more
information.
Hoist unit to a point directly above the curb and duct
openings. Lower unit while guiding the unit to align with
utility opening and duct openings. Be sure that the
gasket material has been applied to curb. Continue
lowering the unit until the unit skirt fits around the curb.
Make sure the unit is properly seated on the curb and is
level.
For gas fired units, the unit shall be installed so that the
flue discharge vents are located at least 120" away from
any opening through which combustion products could
enter the building. The unit shall also be installed so
that the flow of combustion and ventilating air is not
obstructed from reaching the furnace. Do not position
flue opening to discharge into a fresh air intake of any
other piece of equipment.
Improper installation, adjustment,
alteration, service or maintenance can
cause property damage, personal injury
or loss of life. Installation and service must
be performed by a qualified installer,
service agency or the gas supplier.
Install the gas fired unit to assure the flow
of combustion and ventilating air is not
obstructed from reaching the heater and
that the flue outlet is located at least
120 inches away from any opening
through which combustion products
could enter the building.
▲
!
WARNING
UNIT MUST BE RIGGED AT ALL
MARKED LIFTING POINTS (Typical)
Back -Opposite of Front
LOCATION
UNIT SIZE
SERVICE CLEARANCES
Front -Vestibule Door Side
Left Side -Condenser End
Right Side -Return Air End
Top UNOBSTRUCTED
045 - 135
100"
100"
100"
100"
134 - 230
142"
142"
100"
100"
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