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PrEParaTIon
Before proceeding with installation of iQ heat pump equipment,
consult with the distributor and homeowner to confirm that the
equipment listed on the order is what was ordered, and that
it matches labeling on the equipment packaging.
Determine (including consultation with the homeowner) the
intended/preferred location for placement of the compressor/
outdoor coil unit. Unit envelope dimensions are shown in
Figure 1.
This heat pump is designed for outdoor installation only.
Unit placement must take into consideration the following
clearances:
• A minimum of 12 inches must be provided between each
of the four sides and any solid barrier or wall which might
block free inlet air flow into the coil. A minimum clearance
of 18 inches is required between multiple units.
• The corner of the unit covered by the control access cover
must be clear enough to allow comfortable access by a
serviceperson.
• The top of the unit must be open and unobstructed to prevent
recirculation of outdoor fan discharge air, particularly for air
conditioning usage. A minimum distance of 4 feet overhead
clearance is recommended. Do not locate the unit in a pit
with high walls on all sides.
Locate the unit away from overhangs which would allow
water runoff or ice to fall directly onto the heat pump. In low
temperature climates, place the unit where it is not directly in
prevailing winds. Avoid placing the heat pump near sleeping
quarters or windows. As the unit goes through defrost cycles,
a change in sound will occur.
24"
For Service
Access
CONTROL
PANEL
Figure 1. unit Envelope Dimensions
EXTERIOR WALL
12"
12"
12"
Slab Mounting
• The preferred unit mounting is on an outdoor slab (concrete
or plastic), on the ground, in an area with good drainage
unlikely to be affected by heavy runoff, ground settling, or
deep snowdrift accumulation.
• The support slab should be level. If the area is subject to
heavy snowfall or drift accumulation, the use of a snow
stand is recommended as well. Make sure that the drain
holes in the bottom of the unit are not obstructed.
roof Mounting
The method used for roof mounting should be designed so
as not to overload roof structures nor transmit noise to the
interior of the structure. Refrigerant and electrical lines should
be routed through suitably waterproofed openings to prevent
leaking into the structure. Make sure that the roof structure
can adequately support the weight of the equipment. Consult
local building codes for rooftop installations.
After a location has tentatively been selected, trace routing
of new (or pre-existing) refrigerant lines (two), and power and
control wiring. See further discussion below.
• Maximum recommended length for refrigerant lines: 100
ft.
• Maximum elevation difference, compressor base to indoor
coil base (compressor higher or lower): 50 feet. noTE: An
oil trap is required for elevations exceeding 50 feet.
• Refrigerant lines should NOT be buried. (in concrete or
otherwise).
• Refer to Nordyne Application Guideline for Refrigerant Lines
Over 75 Feet document 044B-0600, for piping details.
Once the above information has been confirmed and potential
questions regarding location, refrigerant line routing, and
wire routing have been resolved, proceed with unpacking the
equipment. It is strongly recommended that inspection of the
hardware be performed prior to bringing it to the installation
site. Inspect for cosmetic as well as functional damage (such
as obvious holes or gaps in tubes and joints, cut or pinched
wires or wire insulation).
®
Verify that the iQ Drive
heat pump unit package includes the
following:
• Coil/compressor/control unit.
• Packet containing installation instructions and one filter-
drier.
3
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