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INSTALLATION CLEARANCES
Special consideration must be given to location of the
condensing unit(s) in regard to structures, obstructions,
other units, and any/all other factors that may interfere with
air circulation. Where possible, the top of the unit should
be completely unobstructed; however, if vertical conditions
require placement beneath an obstruction there should
be a minimum of 60 inches between the top of the unit
and the obstruction(s). The specified dimensions meet
requirements for air circulation only. Consult all appropriate
regulatory codes prior to determining final clearances.
Another important consideration in selecting a location for
the unit(s) is the angle to obstructions. Either side adjacent
the valves be placed toward the structure provided the
side away from the structure maintains minimum service
clearance. Corner installations are strongly discouraged.
NOT
RECOMMENDED
B
A
AA
C
AA
AA
A
C
Minimum Airflow Clearance
Model Type
Residential
Light Commercial
This unit can be located at ground floor level or on flat
roofs. At ground floor level, the unit must be on a solid,
level foundation that will not shift or settle. To reduce the
possibility of sound transmission, the foundation slab
should not be in contact with or be an integral part of the
building foundation. Ensure the foundation is sufficient to
support the unit. A concrete slab raised above ground level
provides a suitable base.
B
B
B
AA
C
AA
AA
AA
C
A
B
C
10"
10"
18"
12"
12"
18"
ROOFTOP INSTALLATIONS
If it is necessary to install this unit on a roof structure,
ensure the roof structure can support the weight and that
proper consideration is given to the weather-tight integrity
of the roof. Since the unit can vibrate during operation,
sound vibration transmission should be considered when
installing the unit. Vibration absorbing pads or springs can
be installed between the condensing unit legs or frame and
the roof mounting assembly to reduce noise vibration.
NOTE: These units require special location
consideration in areas of heavy snow accumulation
and/or areas with prolonged continuous
subfreezing temperatures. Heat pump unit bases
have cutouts under the outdoor coil that permit
drainage of frost accumulation. Situate the unit
to permit free unobstructed drainage of the
defrost water and ice.
In more severe weather locations, it is recommended that
the unit be elevated to allow unobstructed drainage and air
flow. The following elevation minimums are recommended:
Design Temperature
OK!
OK!
+15° and above
-5° to +14°
below -5°
SAFE REFRIGERANT HANDLING
While these items will not cover every conceivable
OK!
OK!
situation, they should serve as a useful guide.
OK!
OK!
To avoid possible injury, explosion or death,
practice safe handling of refrigerants.
AA
20"
Refrigerants are heavier than air. They can
"push out" the oxygen in your lungs or in any
24"
enclosed space. To avoid possible difficulty in
breathing or death:
• Never purge refrigerant into an enclosed
room or space. By law, all refrigerants must
be reclaimed.
• If an indoor leak is suspected, thoroughly
ventilate the area before beginning work.
• Liquid refrigerant can be very cold. To
avoid possible frostbite or blindness, avoid
contact and wear gloves and goggles. If
liquid refrigerant does contact your skin or
eyes, seek medical help immediately.
• Always follow EPA regulations. Never
burn refrigerant, as poisonous gas will be
produced.
2
Suggested Minimum Elevation
2 1/2"
8"
12"
WARNING
WARNING
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