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506120−01 03/10
POSITIONING CONSIDERATIONS
CAUTION
In order to avoid injury, take proper precaution when
lifting heavy objects.
Consider the following when positioning the unit:
Some localities are adopting sound ordinances based
on the unit’s sound level registered from the adjacent
property, not from the installation property. Install the
unit as far as possible from the property line.
When possible, do not install the unit directly outside
a window. Glass has a very high level of sound
transmission. For proper placement of unit in relation
to a window see the provided illustration in figure 7.
INSTALL UNIT
AWAY FROM WIN-
DOWS
TWO 90° ELBOWS
INSTALLED IN LINE SET
WILL REDUCE LINE SET
VIBRATION.
Figure 7. Outside Unit Placement
PLACING OUTDOOR UNIT ON SLAB
When installing unit at grade level, the top of the slab
should be high enough above grade so that water from
higher ground will not collect around the unit. The slab
should have a slope tolerance as described in figure 8.
INSTALL UNIT LEVEL OR, IF ON A SLOPE, MAINTAIN SLOPE TOLERANCE
OF 2 DEGREES (OR 2 INCHES PER 5 FEET [50 MM PER 1.5 M]) AWAY FROM
BUILDING STRUCTURE.
MOUNTING
SLAB
BUILDING
STRUCTURE
GROUND LEVEL
Figure 8. Slab Mounting at Ground Level
NOTE − If necessary for small base unit stability, anchor
unit to slab as described in
Stabilizing Small Base Unit on
Uneven Surfaces.
ELEVATING AND STABILIZING SMALL−BASE UNIT
Use the following instructions to elevate and stabilize the
small base units with the round support feet.
Elevating Small−Base Unit
If additional elevation is necessary, raise the unit by
extending the length of the unit support feet. This may be
done by cutting four equal true−cut lengths of Schedule
(SCH) 40, 4" (101.6mm) piping to the height required as
illustrated in figure 9.
LEG DETAIL
BASE
4" (101.6MM)
SCH 40 PIPING
Figure 9. Elevated Slab Mounting using Feet
Extenders (Small−Base Units)
NOTE − Keep the height of extenders short enough to
ensure a sturdy installation. If it is necessary to extend
further, consider a different type of field−fabricated
framework that is sturdy enough for greater heights.
The inside diameter of the 4" (101.6mm) piping is
approximately 0.25" (6.35mm) greater than the
pre−installed feet on the unit. Devise a shim that will take up
the space and hold the extenders onto the feet during this
procedure. Small strips of 0.125" (3.175mm) thick
adhesive foam may be used. One or two small 1"
(25.4mm) square strips should be adequate to hold the
extender in place.
Stabilizing Small−Base Unit on Uneven Surfaces
To help stabilize an outdoor unit, some installations may
require strapping the unit to the pad using brackets and
anchors commonly available in the marketplace.
