2
Should you have any questions please contact the local office of
the EPA.
If replacing a condensing unit or air handler, the system must be
manufacturer approved and Air Conditioning, Heating and Refrig-
eration Institute (AHRI) matched.
NOTE:
Installation of unmatched
systems is strongly discouraged.
Outdoor units are approved for operation above 55°F in cooling
mode. Operation below 55°F in cooling mode requires the use of
an approved low ambient kit.
Operating the unit in a structure that is not complete (either as
part of new construction or renovation) is not covered under the
warranty.
F
EATURES
This heat pump is a part of the ComfortNet™ family of products
and may be installed as part of a digitally communicating system.
The ComfortNet system provides enhanced setup features, and
enhanced diagnostics. It also reduces the number of thermostat
wires to a maximum of four and a minimum of two. This heat
pump may also be installed as part of a “legacy” system using a
standard 24 VAC thermostat.
I
NSTALLATION
C
LEARANCES
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 ob-
struction
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 appropri-
ate 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
can be placed toward the structure provided the side away from
the structure maintains minimum service clearance. Corner in-
stallations are strongly discouraged.
OK!
OK!
AA
AA
A
A
C
C
C
C
OK!
OK!
OK!
OK!
NOT
RECOMMENDED
AA
AA
AA
AA
AA
B
B
B
B
Model Type
A
B
C
AA
Residential
10"
10"
18"
20"
Light Commercial
12"
12"
18"
24"
Minimum Airflow Clearance
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 foun-
dation is sufficient to support the unit. A concrete slab raised
above ground level provides a suitable base.
R
OOFTOP
I
NSTALLATIONS
If it is necessary to install this unit on a roof structure, ensure the
roof structure can support the weight and that proper consider-
ation 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 absorb-
ing 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. A minimum 3” clearance
under the outdoor coil is required in the milder climates.
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:
