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Installation: Outdoor installation : Positioning and air flow
Installation
Outdoor installation : Positioning and air flow
Installation should only be carried out by qualified, competent personnel and must comply
with all relevant local or national regulations .
For optimal performance, the heat pump should be installed outdoors in an open area, with
as much space as possible between the unit and any potential obstructions . Obstructions
include objects such as walls, fences, hedges, or anything that might limit the free movement
of air around the unit .
If the heat pump needs to be installed indoors, please refer to the section titled Indoor In-
stallation for specific guidelines .
The heat pump functions by absorbing energy from the air passing through it . Any obstruc-
tion that restricts airflow will reduce its efficiency . Moreover, obstructions can cause exhaust
air to recirculate back into the unit, further diminishing performance .
While it is best to avoid placing the heat pump near obstructions, if it is enclosed on up to
two sides with minimum clearances met then the unit should still perform as expected .
However, if the heat pump is enclosed on more than two sides—even with minimum clear-
ances—the performance will be reduced . If obstructions are closer than the recommended
minimum clearances, the performance will be significantly impacted .
It is also advisable not to place the heat pump under any structure or awning .
For installations involving multiple heat pumps, the minimum clearance must be maintained
for each unit . The air inlets and outlets of all heat pumps should be aligned in the same orien-
tation .
The diagram below illustrates the mandatory minimum clearances between the heat pump
and any potential obstructions . The heat pump should never be located in the area shaded in
orange in the diagram .
To easily mark the radius where two obstructions meet, use a piece of string 1350mm long
attached to a peg . Place the peg at the point where the two obstructions intersect, pull the
string taut, and trace an arc to mark the radius .
Potential obstruction
500mm
700mm
750mm
Potential obstruction
700mm
Additional heat pump
700mm
Air inlet
Air outlet
Air inlet
Key: Route of air ow
through heat pump
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