10
Location
4.0 INSTALLATION
4.2 Choosing a Location (cont.)
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.
WARNING: Disconnect all power to
unit before starting maintenance. Failure to do so can
cause electrical shock resulting in severe personal
injury or death.
Regular maintenance will reduce the buildup of
contaminants and help to protect the unit’s finish.
• Frequent washing of the cabinet, fan blade, and
coil with fresh water will remove most of the salt or
other contaminants that build up on the unit.
• Regular cleaning and waxing of the cabinet with
a good automobile polish will provide some
protection.
• A good liquid cleaner may be used several times
a year to remove matter that will not wash off with
water.
4.2.4 Customer Satisfaction Issues
• The heat pump should be located away from the
living, sleeping, and recreational spaces of the
owner and those spaces on adjoining property.
• To prevent noise transmission, the mounting pad
for the outdoor unit should not be connected to
the structure and should be located a sufficient
distance above grade to prevent ground water from
entering the unit.
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