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Free-AIr-3-IN
EN/02.2018 © STULZ SpA – all rights reserved
5.1. Positioning and mechanical installation
1. Free-Air-3-IN units must be installed inside the room to be conditioned.
2. Check that:
• There is space enough for an easy application, installation and maintenance; it is necessary to
have a minimum distance from the floor of 200 mm and also from the top of the unit of 200 mm.
In particular, a minimum distance of 1000 mm from the unit has to be considered both inside
and outside the ambient to be conditioned.
• The wall or door where the unit has to be fixed can support its weight;
• The room to be conditioned is clean inside;
• The unit is not in the proximity of heat sources or warm air flows;
• The structure is water tight;
• The inside of the room allows a proper air circulation, preventing any recirculation;
• If it is installed on a door, make sure that the hinges are strong enough to support the unit. Make
sure that the electric cable does not get torn or damaged when the door is closed. If the depth
of the Free-Air-3 prevents the door from being completely opened, arrange a stopper for such a
door.
3. Two openings are required on the walls
• One is for fresh air intake. This opening, of 660mmx540mm, must be made according to the
relevant cut-out shown below.
• The other opening is for exhaust air discharge. It should be placed in a position which allows
a good air circulation during free cooling, avoiding short circuits of air and allowing fresh air to
reach the relevant points to be cooled. A suitable overpressure damper must be installed on the
second opening, to avoid internal air going out from it during operation of the units.
Cut-out of Free-Air-3-IN unit (view of the installation wall from outside)