8
4.2 Choosing a Location
4.2.1 Allowable Clearances
12" [30.5 cm] to side intake louvers
24" [61.0 cm] to service access panels
60" [152.4 cm] vertical for fan discharge
If space limitations exist, the following clearances will
have minimal impact to capacity and efficiency and
are permitted:
Single-Unit Applications: Minimum of 6" [15.2 cm]
to side intake louvers. DO NOT reduce the 60" [152.4
cm] for fan discharge or the 24" [61.0 cm] service
clearances.
Multiple-Unit Applications: For units positioned next
to each other, a minimum of 6" [15.2 cm] clearance
between units is recommended for 2 ton models and
9" [22.9 cm] for 3 ton to 5 ton models. Do not reduce
the 60" [152.4 cm] for fan discharge or the 24" [61.0
cm] service clearances.
IMPORTANT: Consult local and national building
codes and ordinances for special installation
requirements. Following location information will
provide longer life and simplified servicing of the
outdoor heat pump.
NOTICE: These units must be installed outdoors.
No ductwork can be attached, or other modifications
made, to the discharge grille. Modifications will affect
performance or operation.
Item Number Item Description Clearance Needed
1 Air Inlet Louvers
6" [15.2 cm] All Sides
12" [30.5 cm] Recommended
2
Service Panels
Inlet Connections
High & Low Voltage Access
24" [61.0 cm]
3 Air Discharge 60" [152.4 cm]
4 Space Between Units
12” Min. (30.5 cm)
24” [61.0 CM] Recommended
Figure 3: Required Clearances for Unit Installation
4.2.2 Operational Issues Related to
Unit Location
IMPORTANT: Locate the unit in a manner that will
not prevent, impair, or compromise the performance
of other equipment installed in proximity to the
unit. Maintain all required minimum distances to
gas and electric meters, dryer vents, and exhaust
and inlet openings. In the absence of national
codes or manufacturers’ recommendations, local
code recommendations and requirements will take
precedence.
• Refrigerant piping and wiring should be properly
sized and kept as short as possible to avoid capacity
losses and increased operating costs.
• Locate the unit where water runoff will not create a
problem with the equipment. Position the unit away
from the drip edge of the roof whenever possible.
Units are weatherized, but can be affected by the
following:
• Water pouring into the unit from the junction
of rooflines, without protective guttering. Large
volumes of water entering the heat pump while in
operation can impact fan blade or motor life, and
coil damage may occur to a heat pump if moisture
cannot drain from the unit under freezing conditions.
• Freezing moisture or sleeting conditions can cause
the cabinet to ice-over prematurely and prevent
heat pump operation, requiring backup heat, which
generally results in less economical operation It is
highly recommended to switch the EcoNet™ Control
Center or thermostat to the "Emergency Heat" mode
during freezing rain or sleeting conditions to prevent
damage to the outdoor coil from ice accumulating on
the fan blade.
• Closely follow the clearance recommendations in
section 4.2.1.
• 24" [61.0 cm] to the service panel access.
• 60" [152.4 cm] above the fan discharge (unit
top) to prevent recirculation.
• 6" [15.2 cm] to the coil grille air inlets
with 12" [30.5 cm] minimum recommended.
4.2.3 Corrosive Environment
The metal parts of this unit may be subject to rust or
deterioration if exposed to a corrosive environment.
This oxidation could shorten the equipment’s useful
life.
Corrosive elements include, but are not limited to,
salt spray, fog or mist in seacoast areas, sulphur or
chlorine from lawn watering systems, and various
chemical contaminants from industries such as paper
mills and petroleum refineries.
If the unit is to be installed in an area where
contaminants are likely to be a problem, special
attention should be given to the equipment location
and exposure.
• Avoid having lawn sprinkler heads spray directly on
the unit cabinet.
• In coastal areas, locate the unit on the side of the
building away from the waterfront.
• Shielding provided by a fence or shrubs may give
some protection, but cannot violate minimum airflow
and service access clearances.
Location
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