AAON RZ Series, Installation Operation & Maintenance

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For horizontal return and discharge
applications, total height of mounting rail and
unit base rail must be high enough so that
adequate condensate drain p-trap can be
included. Units require steel mounting rail
support along all four sides of the unit base.
When installed at ground level, a one-piece
concrete slab must be used with footings that
extend below the frost line. Care must also be
taken to protect the coil and fins from damage
due to vandalism or other causes.
If unit is elevated a field supplied catwalk is
recommended to allow access to unit service
doors.
This unit ships with a curb gasket that is 1¼”
wide and 1½” tall. This or another similar
gasket must be used between the curb and the
unit to reduce vibration from the unit to the
building.
Lifting the Unit
If cables or chains are used to hoist the unit
they must be the same length. See figure on
the next pages for dimensions.
Lift 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 the unit.
Secure hooks and cables at all marked lifting
points provided on the unit.
Hoist unit to a point directly above the curb
and duct openings. Be sure that the gasket
material has been applied to the curb.
Carefully lower and align unit with utility and
duct openings. Lower the unit until the unit
skirt fits around the curb. Make sure the unit
is properly seated on the curb and is level.
Figure 3 - Base Rail Lifting Lug
Incorrect lifting can cause damage to
the unit.
CAUTION