AAON RN Series, Installation, Operation & Maintanance Manual, Page: 30 / 116

30
16-25 and 30 tons
Front -
(Controls Side)
48”
Back - (Outside Air) 48”
*Left Side *21”
Right Side 60”
Top Unobstructed
*Units with a water-cooled condenser or
chilled water coil require 48” of clearance
on the left side for service access.
Figure 2 - RN Series A, B and C Cabinet,
6-25 and 30 tons
Table 5 - D Cabinet Unit Clearances
Location
Unit Size
26 and 31-70 tons
Front -
(Controls Side)
48”
Back - (Outside Air) 48”
*Left Side *48”
*Right Side *70”
Top Unobstructed
*Right and left side unit clearances are
interchangeable on units that do not have
hydronic heating. Units with hydronic
heating require 70” right side access for
service.
Figure 3 - RN Series D Cabinet,
26, 31-50, 60 and 70 tons
Table 6 - E Cabinet Unit Clearances
Location
Unit Size
55, 65 and 75-140
tons
Front -
(Controls Side)
60”
Back - (Outside Air) 48”
Left Side 72”
Right Side 72”
Top Unobstructed
Figure 4 - RN Series E Cabinet,
55, 65 and 75-140 tons
Setting the Curb
Make openings in roof decking large enough
to allow for duct penetration and workspace
only. Do not make openings larger than
necessary. Set the curb to coincide with the
openings. Make sure the curb is level. Unit
must be level in both horizontal axes to
support the unit and reduce noise and
vibration.
Back
Right Side
Front
Front
Right Side
Back
Back
Front
Right Side