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Support
The unit should be mounted on a sturdy base. A concrete
slab is recommended.
•
The concrete slab should be the size of the unit or larger
•
The unit must be level
•
Concrete slab should not contact the building
foundation to prevent possible sound or vibration
transmission
•
Be sure the outdoor portion of the supply and return
ducts are as short as possible
•
Slab should be approximately four to six inches above
the ground. In areas known for snow accumulation, the
unit should be elevated at least 18" above the ground.
Rain Gutters
Concrete slab
or preformed pad
CAUTION
UNIT MUST BE INSTALLED ON A LEVEL SURFACE.
Six feet
clearance
above the
unit
5
ROOF TOP INSTALLATION
Location
Make sure the roof structure is adequate to support the
weight of the unit.
Place unit as close to the conditioned space as possible. Run
ducts as directly as possible to supply and return outlets.
The location of the unit on the roof should be such as to
provide safe and proper access for inspection and servicing.
If unit will not be put into service immediately, block off
supply and return air openings to prevent excessive
condensation.
To power supply
Control wiring to
indoor thermostat
CAUTION
UNIT MUST BE INSTALLED ON A LEVEL SURFACE.
Return
air duct
Supply
air duct
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