AAON RM-030 - Manual (Page 7)

7
INSTALLATION continued
AAON Rooftop units are designed for fast, easy installa-
tion. The curb is mounted first and must be located so
duct connections will clear any structural members 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.
CURB MUST BE 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 the unit be hoisted with the outside air
hood in the shipped position. However the unit may be
hoisted with the outside air hood in an open position.
Before lifting unit, be sure that all shipping material is
removed from unit. Secure hooks and cables at all lifting
points / lugs provided on the unit.
Prior to setting the unit onto the roof curb, be sure that
the gasket material has been applied to curb on all
surfaces meeting with the unit.
Hoist unit to a point directly above the curb and duct
openings. Carefully lower and align the unit with utility
and duct openings unit perimeter fits around the curb.
Make sure the unit is properly seated on the curb and is
level.
Gas fired units should be installed so that the flue
discharge vent is located a minimum 120" away from any
opening through which combustion products might en-
ter the building. Unit location must assure combustion
and ventilation air flows are never obstructed.
Never point flue discharge in direction of fresh air intake
for other 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
▲
! IMPORTANT
PRIOR TO SETTING THE UNIT ON THE CURB.
To insure proper isolation and seal
between the unit & curb, gasket material
MUST BE APPLIED to the curb on
ALL SURFACES meeting with the unit.
Where the supply or warm air duct passes
through a combustible roof, a clearance
of one inch must be maintained between
the outside edges of the duct and
combustible material in accordance
with National Fire Protection Association
Standard No. 90A. Provide flashings or
enclosure between structure and roof
and all joints must be sealed with mastic
roofing to ensure a watertight seal.
All roofing work should be performed
by qualified roofing contractors.
▲
! CAUTION
Back - Return Air End
LOCATION
UNIT SIZE
2 - 7
SERVICE CLEARANCES
48"
Front - Control Door Side 48"
Left Side 6"
Right Side - Access Doors 60"
Top UNOBSTRUCTED
8 - 15 16 - 30
48"
48"
6"
60"
48"
48"
6"
60"
LIFTING DETAIL
TYPICAL FOR
2 - 30 TON UNITS
99" minimum
length