AERMEC NRGI-H - Handling with a Forklift; Storage; Place of Installation; Positioning

20 21.01  5723611_01
HANDLING WITH A FORKLIFT
The forks of the forklift must pass completely below the load. During descent, the
load must be lowered in reverse, with the pillar inclined to the rear, during ascent
the load must be lifted in forward gear, with the pillar inclined to the rear.
STORAGE
It is possible that the units may not be immediately installed upon receipt. If they
are stored for a medium-long period of time, the following procedures are recom-
mended:
— The units cannot be stacked;
— Check for any damage
— Make sure there is no water inside the hydraulic systems;
— Do not remove the protections from the heat exchanger;
— Do not remove the plastic protective lms;
— Make sure that the electrical panels are closed;
— Before using the equipment, put all the supplied items in a dry and clean loca-
tion so that they can be used in the future. It is recommended to keep the units
in an area outdoors that is dry and suitably ventilated.
The unit is loaded with slightly ammable gas. Before performing
any work on it, we recommend using appropriate devices to check
for leaks.
The minimum and maximum unit storage temperature depends on the
type of refrigerant used, see the table. Above this limit, there is a risk of
refrigerant leaks through the pressure relief valves.
Maximum storage temperature
Refrigerant Type Class Min temp. (°C) Max. temp. (°C)
R134a HFC A1 -20 °C < 50 °C
R410A HFC A1 -20 °C < 50 °C
R513A HFC A1 -20 °C < 50 °C
R32 HFC A2L -20 °C < 50 °C
R1234ze HFO A2L -20 °C < 50 °C
PLACE OF INSTALLATION
All the units in this series are designed to be installed outdoors only:
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 dened 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 amplied due to reverberations
or resonance;
— Positioning in corners where there is usually an accumulation of dust, leaves
and anything else that could reduce the eciency 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
2.2 m/s).
1 Side-by-side units;
2 Windbreak barrier recommended for wind above 2.2 m/s;
3 Installation not permitted;
4 Installation not permitted.
5 Installation not permitted.
3 4 521
3000 mm
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 place a rubber sheet between the oor and the equip-
ment or 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 levelled 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;