22.11 5806712_07 11
POSITIONING
The units must:
— They must be installed in an area that cannot be accessed by the public and/or
be protected against access by unauthorised persons, if necessary also install
fences;
— Be positioned on a levelled surface that is able to support the weight of the
unit with the refrigerant load and complete water, in addition to the occasional
presence of maintenance equipment;
— In locations exposed to frost, if the unit is installed on soil, the support base
must rest on concrete columns with a depth greater than the normal depth of
frost of the soil. It is always advisable to build a support base separate from the
main building to avoid the transmission of vibrations;
— If the machine is installed in a place potentially subject to snow accumulation
or ice formations in the base, it is recommended to install the unit with at least
300 mm above the ground;
— It is recommended to use suitably sized anti-vibration supports.
— The unit must be xed to the anti-vibration supports and these rmly xed
to the concrete base, see chapter weight distribution and minimum technical
spaces. Check that the contact surfaces of the anti-vibration supports are lev-
elled at the base. If necessary, use spacers or level the base, but in any case make
sure that the anti-vibration supports are placed at on the surfaces of the base;
— The use of anti-vibration supports MUST be done in combination with the in-
stallation of exible couplings in the unit's water pipes. The anti-vibration sup-
ports must be xed to the unit BEFORE being earthed. AERMEC is not responsi-
ble for selecting the capacity of the anti-vibration supports;
— Each side of the unit must have space to allow all routine and extraordinary
maintenance to be performed, the vertical air exhaust must not be obstructed.
PLACE OF INSTALLATION
All the units in this series are designed to be installed outdoors: on
roofs or on the ground in places where there are no obstacles that could
reduce the air ow towards the nned heat exchanger coils.
The location of the unit must be dened by the system designer or a person who is
an expert in the material and must consider both the purely technical requirements
as well as any local laws in force.
For unit installation it is important to perform the following preliminary prepara-
tion tasks:
The following must be avoided
— Positioning in air shafts, holes and/or basement windows;
— Obstacles or barriers that cause the return of the exhaust air;
— Locations with aggressive atmospheres;
— Areas in which the unit's noise level could be amplied due to reverberations
or resonance;
— Positioning in corners where there is usually an accumulation of dust, leaves
and anything else that could reduce the eciency of the equipment, obstruct-
ing the passage of air;
— That the air expulsion from the equipment can penetrate into living areas
through doors or windows;
— That the air expulsed by the unit is countered by adverse wind;
— For the positioning of the air-cooled units for outdoor use, choose a place that
is not exposed to excessive wind (install windbreaks if the wind speed exceeds
4.3 knot).
1 Side-by-side units; 2 Windbreak barrier recommended for wind
above4.3 knot;
3 Installation not permitted;
A. 91 in
321
A
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