Ariston EGIS PREMIUM S 25, Installation And Servicing Instructions

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installation
Before installing the appliance
The boiler heats water to a temperature below boiling.
It should be connected to a heating system and to a domestic
water mains supply, both of which must correspond in size to the
performance and its power of the appliance.
Before connecting the boiler, it is
fi rst necessary to perform the
following operations:
- Carefully wash the system piping in order to remove any screw
thread or welding residues, or any dirt which might prevent the
boiler from operating correctly.
- Make sure that the boiler is set up for operation with the type of gas
available (read the information on the packaging label and on the
boiler data plate).
- Make sure that there are no obstacles inside fl ue exhaust and that
it does not contain any discharge from other appliances, unless
the
fl ue is meant to serve more than one user (in accordance with
current legal requirements).
- Where there is already a connection to existing fl ue exhausts, check
that these exhausts have been perfectly cleaned and are without
residues, because any disconnection could obstruct the passage of
fumes and create potentially dangerous situations.
- Make sure that, where unsuitable fl ue exhausts are attached, they
have been ducted.
- In areas with particularly hard water, limescale may build up on the
components inside the boiler and reduce its overall e ffi ciency
- The sulphur content of the gas used must be lower than the limit
speci fi ed by the European regulations in force: Short-term peak for
the year. 150 mg/m3 of gas and an average for the year of 30 mg/
m3 of gas.
C-type boilers, with combustion chambers and air supply circuits
which are completely sealed from the air outside, do not have any
limitations concerning the ventilation and size of the room in which
they are installed.
So that the normal operation of the boiler is not compromised,
the place in which it is installed must be suitable with regard to
the operating limit temperature value and the appliance should
be protected so that it does not come into direct contact with
atmospheric agents.
The boiler must be installed on a solid, non-combustible, permanent
wall to prevent access from the rear.
When creating a space for the boiler, the minimum distances (which
ensure that various parts of the boiler may be accessed after it has
been installed) should be respected.
WARNING
No in fl ammable items should be left in the vicinity of the
boiler.
Make sure the installation site and any systems to which
the appliance must be connected are fully compliant with
the current applicable legislation.
If dust and/or aggressive vapours are present in the room
in which it is to be installed, the appliance must operate
independently of the air inside the room.
The installation and fi rst ignition of the boiler must be
performed by quali fi ed personnel in compliance with
current national regulations regarding installation, and
in conformity with any requirements established by local
authorities and public health organisations.
Gas connection
The boiler was designed to use gases belonging to the categories as
shown in the following table.
COUNTRY MODEL CATEGORIES
EGIS PREMIUM S 25
EGIS PREMIUM S 31
Make sure, using the labels on the packaging and the data plate on
the appliance itself, that the boiler is in the correct country and that
the gas category for which the boiler was designed corresponds to
one of the categories available in the country where it will be used.
The gas supply piping must be created and measured out in
compliance with speci fi c legal requirements and in accordance with
the maximum power of the boiler; you should also make sure that
the shut-o ff valve is the right size and that it is connected correctly.
Before carrying out the installation, it is recommended that the fuel
pipes are cleaned thoroughly in order to remove any residues which
could prevent the boiler from operating correctly.
Check that the supplied gas corresponds to the type of gas for which
the boiler was designed (see the data plate located on the appliance
itself).
It is also important to check that the pressure of the gas (methane
or LPG) you will be using to feed the boiler is suitable, because if it
is insu ffi cient the power of the generator may be reduced, causing
inconvenience for the user.
Water connection
The illustration shows the connections for the water and gas
attachments of the boiler.
Check that the maximum water mains pressure does not exceed 6
bar; if it does, a pressure reducing valve must be installed.
View of the Boiler Connections
F
A
B
C
D
E
I
G
H
Legend:
A = Central Heating Flow
B = Domestic Hot Water Outlet
C = Gas Inlet
D = Domestic Cold Water Inlet
E = Central Heating Return
F = Safety Valve Discharge
G = Filling valve
H = Drain Valve
I = Drain condensate