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Installation manual
1.12 Instructions for installation and connection of the unit
If possible, in warm zones like the southern Europe, the unit should be located on the north or east side
of the building or property.
The location chosen for the unit must provide the condenser with an unlimited air supply.
As well as the technical data given in this document and any others that are applicable, please bear in
mind that the unit has been designed for outdoors installation only.
Specifications for the foundation or
Where the unit is to be installed at ground level, refer to section
anchoring of the
unit, see on page 29 .
Where the unit is to be installed on the roof of a building or property, make sure that the roof structure
can support the weight of the unit plus that of any optional equipment and/or accessories to be fitted.
The unit must be installed on a specific mounting base or on a frame of appropriate steel angles. There
are optional mounting bases available (RoofCurb).
Regardless, keep the level tolerance at maximum 10 mm all along the length and width of the unit.
If the unit is to be installed on a base or on a special angle frame that is not the standard RoofCurb,
gaskets should be applied to all surfaces that are touching the bottom of the unit. Leave passages free
for the evacuation, towards the outdoors, of rainwater or condensation in the base of the compressor
section, next to the outdoor battery.
Special instructions for locations where there is regular snowfall or with ambient temperatures of close
to 0 °C or less
In areas where there is regular or sporadic snow, the unit should be elevated above the ground or roof
where it is installed. The height should be enough to prevent the unit, the condenser and evaporator air
inlets and the access to the unit panels from becoming blocked by accumulated snow.
Protection against ice
In areas where the temperature can drop below 0 °C, there must be some kind of additional protection
to prevent the water in the condensate drain pipe from freezing.
Use a wire heating element in the drain trap as well as in the drain, where applicable.
In heat pumps, also use wire heating elements in the support tray of the outdoor coil to prevent any ice
from accumulating.
Special instruction for locations with high ambient temperatures
In areas where the ambient temperature is over 43 °C, the unit must not be located in direct sunlight and,
therefore a specific cover will be required.
The installation of a special sunshade over the unit must not affect the air flow required by the unit to
General measurements and
accesses, see on
work correctly. Check the minimum clearance required
page 13 .
1.12.2 Characteristics of the facility where the unit will be installed
The air duct installation where the unit is to be installed must be formed by a closed return duct system.
The additional installation of economisers or outdoor air intakes is not excluded.
To reduce operating noise, the supply and return air duct connections on the unit must be made using
flexible joints.
The supply and return air duct systems must be designed for the air flow requirements of the installation.
The ducts should not be sized based on the supply and return air connection sizes of the unit.
Duct covers
Dimensions of the duct
Units are shipped with side and lower duct openings covered. See section
connections, see on page 10 and
Connections for supply and return
ducts, see on page 12 .
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