AAON ProFit WH Series, Installation Operation & Maintenance, Page: 16 / 48

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Note: Ductwork must be supported
independently from the unit. The unit must
not support supply and/or return ductwork.
Allow adequate service clearances as shown
on the unit nameplate and unit drawing.
Consult your local building codes for
additional service clearance requirements.
Allow adequate space for piping access and
panel removal. Water piping is on the
compressor end and condensate drain
connections are located on the opposite end.
Figure 5 - Condensate Drain Piping
Floor Mounted Units
Make sure the unit is level and mounted on a
field supplied platform with a minimum
height to allow for proper depth of the
condensate line p-trap. Other installation
provisions may be necessary according to job
specifications.
It is recommended that a vibration isolation
pad be used when floor mounting a unit
Condensate Drain Piping
A p-trap and drain line must be installed on
horizontal units, with the p-trap not to exceed
6” from the drain connection. Use the same
pipe size or larger as/than the drain
connection and pitch downward toward
drain. Use an air break in long runs of
condensate lines.
Note: All horizontal units
require a field installed p-trap.
Draw-through cooling coils will have a
negative static pressure in the drain pan area.
This will cause an un-trapped drain to back
up due to air being pulled up through the
condensate drain piping.
Condensate drain trapping and piping must
conform to all applicable governing codes.
Note: Drain connection is a ¾” MTP.
Emergency drain pan is
recommended for all applications
where a risk of water damage to
surrounding structure or furnishings.
Refer to local codes.
Unit must not be operated without p-
traps. Failure to install a p-trap may
result in overflow of condensate
water.
Condensate
Drain
CAUTION
CAUTION