Smart. Solar
. Box
Installation and user handbook - rev. 1.1 of 13|09|2018
26
Expansion vessel
The water held in the accumulator of the
EGO
PRIME solar collector is subjected to notable
thermal excursions and, as a result, important variations in volume.
The system is protected from the overpressure caused by these fluctuations by the safety and
one-way valve which, if necessary, opens and allows the system to return to its correct wor-
king pressure.
Should the user wish to prevent the safety and one-way valve from opening, it is advisable to
use an
EXPANSION VESSEL
, suitably sized according to use.
When the
EXPANSION VESSEL
is assembled, the overpressure that can originate in the accu-
mulation tank is absorbed by vessel deformation, therefore the safety valve does not need to
intervene in normal conditions of use.
The
EXPANSION VESSEL
must be installed between the safety and one-way valve and the in-
flow connection of the solar collector.
The
EXPANSION VESSEL
must be connected using all the methods indicated for heating sy-
stems, therefore it must be directly connected to the accumulator (without placing valves or
taps between them) and pre-set at a pressure of 0.5 bar less than that of the system working
pressure.
The
EXPANSION VESSEL
and its pre-set values must be sized using the normal formulas that
can be found in normal hydraulic documents.
The expansion vessel must be installed by specialist technicians and/or companies.
Starting
Using the cover sheet
The
EGO
PRIME
integrated solar collector is supplied with a plasticizer-free PVC covering she-
et which serves the purpose of blacking out the surface that captures the solar irradiation. This
will prevent the product from overheating from solar exposure in the event of the collector
being installed but not connected to the water mains (therefore with no water inside), or in
any other situation where the collector volume is wholly or partially empty.
The solar collector is not designed for exposure to direct sunlight unless it is filled with water.
If to the contrary, the direct irradiation on the empty product will cause overheating and sub-
sequent damage to the internal components.
In the event of using a different sun protection system, make sure that it is plasticizer-free in
order to prevent damage to the transparent cover.
Image of the sticker on the cover sheet
ATTENCION:
ONLY EVER REMOVE
THE PROTECTION
AFTER HAVE FILLED THE
SYSTEM WITH WATER.
The cover sheet must be kept in position from system installation to starting. Do not remove
it before having filled the collector.
Exposure to the sun when the system is empty can damage the product; in this case the ma-
nufacturer will not recognise any guarantee rights.
If the solar collector should not be covered at the time of commissioning, cover it with the sup-
plied cover or with a suitable blackout system and wait no less than 3 hours before starting
the system loading operation.
In any case, the system must be charged with the cold system (covered collector or early in
the day).
Keep the cover sheet for future use.
DANGER!
If used again, position the sheet carefully, making sure that the black PVC side is
turned towards the outside.
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