AAON SA-070 - Manual (Page 18)

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concentration builds up, oil is washed out of
the compressor, leaving it starved for
lubrication.
The compressor life will be seriously
shortened by reduced lubrication and the
pumping of excessive amounts of liquid oil
and refrigerant.
Wiring Diagrams
Unit specific wiring diagrams are laminated
and affixed inside the controls compartment
door.
Condensate Drain Pans
Units require drain p-traps and lines to be
connected to the condensate drain pans of
the unit. The lines should be the same pipe
size or larger than the drain connection,
include a p-trap, and pitch downward toward
drain. An air break should be used with long
runs of condensate lines. Waterside economizer coil units include a
separate condensate drain pan which drains
into the evaporator coil drain pan. No
additional drain line is needed for the
waterside economizer drain pan.
Unit Size
Units are modular and composed of
combination of the four standard unit sizes,
SA-023, SA-028, SA-030, and SA-035.
Table 1 - SA Series Models
Model Cabinet Type Intake Cabinet 1 Cabinet 2
SA-023
Single
Left or Right
Side
SA-023
SA-028 SA-028
SA-030 SA-030
SA-035 SA-035
SA-045
Dual
Left and Right
Sides
SA-023 SA-023
SA-050 SA-023 SA-028
SA-055 SA-028 SA-028
SA-058 SA-028 SA-030
SA-060 SA-030 SA-030
SA-065 SA-030 SA-035
SA-070 SA-035 SA-035
Installation
Locating the Unit
Placement of the unit relative to ductwork,
electrical and plumbing must be carefully
considered. Return air plenum or duct can be
mounted directly to the return air flanges.
Use flexible gasket material to seal the duct
to the unit.
Verify floor or foundation can support the
total unit weight, including accessory
weights. Unit must be level in both
horizontal axes to support the unit and
reduce noise and vibration from the unit.
Allow adequate service clearances as shown
on the unit nameplate and unit drawing.
Unit should not be operated without a
p-trap. Failure to install a p-trap may
result in overflow of condensate
water.
CAUTION