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2
INSTALLATION
The boiler must be installed in a fixed loca-
tion and only by specialized and qualified
firms in compliance with all instructions
contained in this manual.
Furthermore, the installation must be in
accordance with current standards and
regulations.
2. 1
VENTILATION OF BOILER ROOM
Models "25 BF", with a hermetically sealed
combustion chamber and air supply cir-
cuit,may be installed in any room in the
home.
2.2
INSTALLATION PLATE
The op tional ins t allation plat e code
8075416 is supplied with an instruction
sheet for the fixing.
2.2. 1
Elbow kit
Follow the instructions shown in fig. 4 to
assemble the components supplied in optio-
nal kit code 8075423.
2.2.2
Isolating valves kit
To fit the isolating valves, supplied in kit code
8091806, follow the instructions mentio-
ned in fig. 4/a.
2.2.3
Replacement wall kit
for other makes
For assembly of the optional kit code
8093900 refer to the instruction sheet
provided with the kit.
2.3
CONNECTING UP SYSTEM
To protect the heat system from damaging
corrosion, incrustation or deposits, before
installation it is extremely important to
clean the system using suitable products
such as, for example, Sentinel X300 or
X400.
Complete instructions are provided with
the products but, for further information,
you may directly contact GE Betz.
For long-term protection agains corrosion
and deposits, the use of inhibitors such as
Sentinel X100 is recommended after clea-
ning the system.
It is important to check the concentration
of the inhibitor after each system modifica-
tion and during maintenance following the
manufacturer's instructions (specific tests
are available at your dealer).
The safety valve drain must be connected
to a collection funnel to collect any dischar-
ge during interventions. If the heating
system is on a higher floor than the boiler,
install the on/off taps supplied in kit code
8091806 on t he heating sy s t em
delivery/return pipes.
WARNING:
Failure to clean the heat system or add
an adequate inhibitor invalidates the devi-
ce's warranty.
Gas connections must be made in accor-
dance with current standards and regula-
tions. When dimensioning gas pipes from
the meter to the module, both capacity
volume (consumption) in m
3
density must be taken into account.
The sections of the piping making up the
system must be such as to guarantee a
supply of gas sufficient to cover the maxi-
mum demand, limiting pressure loss
between the gas meter and any apparatus
being used to not greater than:
– 1.0 mbar for family II gases (natural gas);
– 2.0 mbar for family III gases (butane or
propane).
An adhesive data plate is sticked inside the
KEY
1 Fixing jig
2 Elbow D.H.W. outlet
L. 135 - 1/2"x14
3 Elbow D.H.W. inlet
L. 135 - 1/2"x14
4 Gasket ø 18,5/11,5
5 Gasket ø 24/17
6 Copper pipe L. 195 - 3/4"x18
7 Gas cock 3/4" MF
8 Elbow L. 135 - 3/4"x18
KEY
1 Fixing jig
2 Straight coupling 1/2"x14
3 Gasket ø 18.5/11.5
4 Elbow 1/2"x14
5 Copper pipe 1/2"x14
6 Isolation valve 1/2" MF
7 Isolation valve 3/4" MF
8 Gasket ø 24/17
9 Gas cock 3/4" MF
10 Straight coupling 3/4"x18
11 Copper pipe 3/4"x18
12 Straight coupling
3/4"x18 with olive
front panel; it contains all the technical data
identifying the boiler and the type of gas for
which the boiler is arranged.
2.3. 1
Filter on the gas pipe
The gas valve is supplied ex factory with an
inlet filter, which, however, is not adequate
to entrap all the impurities in the gas or in
gas main pipes.
To prevent malfunctioning of the valve, or in
/h and gas
certain cases even to cut out the safety
device with which the valve is equipped,
install an adequate filter on the gas pipe.
2.5
SYSTEM FILLING (fig. 5)
Filling of the boiler and the system is done
by the charge cock (2). The charge pressu-
re, with the system cold, must be between
1 and 1.2 bar.
During system filling you are recommended
to keep the main switch turned OFF.
IT
ES
PT
GB
Fig. 4
Fig. 4/a
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