15
installation
Gas connection
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 specic legal requirements
and in accordance with the maximum power of the
boiler; you should also make sure that the shut-
o valve is the right size and that it is connected
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 insucient the
power may be reduced, causing inconvenience for
the user.
Water connection
The illustration below shows the connections for the
water and gas attachments of the boiler. See valves
conguration on page 14.
Check that the maximum water mains pressure does
not exceed 6 bar; if it does, a pressure reducing valve
must be installed.
For the measuring of the pipes and of the heating
bodies in the heating system, the residual head value
should be calculated as a function of the requested
ow rate, in accordance with the values shown in the
circulation pump graph.
Instructions for opening the casing and performing
an internal inspection
Before performing any work on the boiler, rst
disconnect it from the electrical power supply using the
external bipolar switch; removing the fuse and shutting
o the gas valve.
To access the inside of the boiler, the following is
necessary:
1.
Remove the casing by unhooking it from the control
panel (a)
2. Loosen the two screws on the front casing (b), pull it
forwards and unhook it from the upper pins (c)
3. Lower the control panel (d)
4. Unhook the two clips on the combustion chamber
panel and lift o (e).
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