Always position a thermostatic mixer valve between
the system outlet and the domestic water user (see
HYDRAULIC CONNECTION chapter)..
In general, do not touch the transport pipes or the hydraulic
connections and the internal accumulation tanks while the system is
operating. Should it be necessary to empty the system while it contains
hot water:
- do not discharge directly onto the roof or into the ground;
- use a flexible hose to safely lead the water to a drain.
Protection against lightning
Pursuant to the Directive EN 62305 1-4, the solar
collector with integrated storage must not be
connected to the protection system used by the
building against lightning, unless indicated otherwise
by local laws in force.
Have a technician or skilled
electrician check the installation
area for this possibility.
All metal structures that are present, therefore
also the supporting structure and fixing shafts of
the system, must have the same electric potential
as the building. It is therefore good practise to
prepare suitable earthing for the metal parts of
the system.This can be done by a skilled electrician
and the evaluation of the equipotentiality level
evaluated by a skilled electrical engineer.
Laws and reference standards
Decree n. 37/2008 of 22 January 2008
UNI EN 12976-1:2006
UNI EN 12976-2:2006
UNI EN 1991:2004 PARTS 1-2,1-3,1-4 (Actions on
structures)
Directive 97/23 / CE
UNI EN 1717:2002
Legislative Decree n. 81 of 09 April 2008
Rev. 4.0 del 16|03|2022
Specifications on water quality
The supply water of the solar collector with incorporated
accumulator tank must permanently comply with the limits
indicated in the following table:
MEASURING
REFERENCE
PARAMETER
UNIT
VALUE
pH
-
6,0 - 9,5
chloride
mg/l
2500
Residual
mg/l
< 0,2
disinfectant
iron
μg/l
< 400
sulphate
mg/l
< 500
conductibility
μS/cm a 20°C
< 2500
For any parameters not listed in the table, the limits imposed
for water intended for human consumption are applicable,
as laid down by Directive 98/83/EC and subsequent
amendments, and as transposed by the respective decrees
of each EU Member State, including the outermost regions
(ORs) and overseas countries and territories (OCTs). For
non-EU countries, the limits set by the local regulations shall
be applicable.
The collector cannot be used with sea water, swimming-
pool water, or any other fluids differing from water. The
use of water that fails to comply with the provisions in this
paragraph will invalidate the product warranty. The electrical
resistors (antifreeze and integration) can be used with
chlorine levels up to twice the limit imposed by Directive
98/38/EC and subsequent amendments.
Hardness
It is recommended to use water with a hardness of
between 10° F and 30° F. In the case of water with a
greater hardness than 30° F it is recommended to carry
out a softening treatment, otherwise the solar collector
and its components, such as the by-pass valve, safety
and non-return valve, electric resistors, etc., may be
subject to limestone deposits and as a result, any damage
to the collector caused by the malfunctioning of the
aforementioned components (valves and resistors) will not
be covered by the warranty.
Damage to the valves and resistors as a result of the
hardness of the water, should this exceed the recommended
limits, will not be covered by the warranty.
If the water has a hardness of over 30°F and is not
softened, there could be a drop in the final yield and it will
be necessary to carry out periodic maintenance operations
on the valves and resistors, with an appropriate frequency
depending on the hardness level in order to guarantee
correct operation over time.
36
System description
Technical characteristics
The solar collector with integrated storage is used for producing domestic water that is heated by solar power, to
temperatures below boiling at atmospheric pressure in places where ice does not form.
It is not be used for the integration to the heating of buildings, for the heating of swimming pool and process water.
THE SYSTEM IS MADE UP OF TWO INTEGRATED UNITS:
A. The solar collector;
y The supporting frame of the collectors is made of aluminium pro-
files.
y The external protective structure is made of a light heat-sealed
PVC frame
1
, that resists UV rays (EGO) or in Aluminum (EGO
PRIME)
y The transparent cover is of LEXAN®
2
, a 10 mm twin wall poly-
carbonate sheet that has been anti-UV treated. In comparison with
traditional solar glass, the sheet is 80% lighter, it limits heat dis-
persion at night, it guarantees optimal transparency to solar radi-
ation and it increases resistance to bad weather.
y The upper frame is made of heat-sealed PVC (EGO) or in Aluminum
(EGO PRIME)
, that can be removed to access the accumula-
3
tion tank. Light and UV-resistant, its design makes it suitable for
any architectural context.
y The lower thermal insulation is made of a polyurethane foam pan-
el, 30 mm thick, that is coated with sheets of aluminium; the lat-
eral insulation is made of 4 sheets of natural fibre polyester, 25
mm thick.
Note on the integrated storage system
The solar collector with integrated storage was produced pursuant
to the 97/23/EC Directive (PED) for pressurised equipment, in
relation to the fluid and working conditions to which it is exposed.
It is a container that holds a group 2 (water) fluid, with steam
pressure at the maximum acceptable temperature below 0.5 bar in
addition to the atmospheric pressure (1.033 bar).
As its threshold limits are below those indicated in art. 3.3 of
Directive 97/23/EC:
−"...for fluids in Group 2 with a pressure PS greater
than 10 bar and a product of PS and V greater
than 10 000 bar 7L, or with a pressure
PS greater than 1 000 bar (Annex II,
table 4)...";
−"...piping intended for fluids in Group 2
with a PS greater than 10 bar, a DN greater than
200 and a product of PS and DN greater than 5 000
bar (Annex II, table 9)..."
this tank is not subject to CE marking, but the producer
guarantees it (as established in the directive) because
"designed and produced following a correct construction
procedure";
the accumulation system does not require CE marking.
B. The storage
y The domestic water accumulation system is made of a series of
high-performing stainless steel cylinders
4
made of a special
alloy that resists high pressures and also very corrosive water.
y The cylinders are closed at their ends by special caps
5
of thermoplastic material loaded with glass fibre, to unite light-
ness and resistance.
y The caps are connected to each other by copper connecting pipes,
which allow the water to move from one cylinder to the next.
The supports for flat roof
are available in two models:
6
– BASIC SUPPORT: pair of galvanised sheet supports (supplied
standard);
– DELIGHT SUPPORT: pair of AISI 304 electropolished supports
(accessories, available on request).
3
4
5
37
made
2
1
6