AAON M2-036 - Manual (Page 34)

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Indoor Floor Mounted Units
Indoor M2 Series units can be floor
mounted.
Dual path units, self contained units and
units over size M2-014 must be floor
mounted. Make sure the unit is level, and
installed with a minimum height of 6” to
allow for proper drainage of the condensate
line. Other installation provisions may be
necessary according to job specifications.
Indoor Suspended Units
Indoor M2 Series units can be can be
suspended. Only single path units of size
M2-005 to M2-014 should be suspended.
Suspension of dual path units, self contained
units or units over size M2-014 is not
recommended.
A ceiling suspended mounting frame must
be provided for unit suspension. It is the
responsibility of the engineer or installing
contractor to design and build a suitable
structure based on the load distribution of
individual modules. C-channels, or similar
structural members, are suggested to be
placed parallel to airflow under each base
rail of the unit, with appropriate structural
cross members as required by weight and
design. A 4” minimum c-channel size is
recommended. The unit is not designed to be
suspended directly from the base rails. An
appropriate structural support is required for
suspension.
The air handling unit must be installed level
as the internal drain pan is manufactured
with a slope toward the drain. Other
installation provisions may be necessary
according to job specifications and
requirements.
Figure 7 - Unit Suspension
Suspension
lines or rods
Ceiling/roof
structure
Cross members
perpendicular to airflow
Supports positioned
under base rails
parallel to airflow
Suspension lines or rods
tied to support structure
(not to the unit base rail)
Base rail
Field supplied
support structure