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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
The “25 OF C - 30 OF C”
version boilers
must be installed in adequately ventilated
domestic rooms. It is essential that in
rooms where the boiler are installed at
least as much air can arrive as required by
normal combustion of the gas consumed
by the various appliances.
Consequently, it is necessary to make ope-
nings in the walls for the air inlet into the
rooms. These openings must meet the fol-
lowing requirements:
– have a total free section of at least 6
cm
2
for every kW of heat input, with a
minimum of 100 cm
2
;
– They must be located as close as possi-
ble to floor level, not prone to obstruc-
tion and protected by a grid which does
not reduce the effective section required
for the passage of air.
The “25 BF TS - 30 BF TS” version boilers
may instead be installed, without any con-
straints regarding location or supply of air
for combustion, in any domestic rooms.
2.3 ACCESSORIES AVAILABLE
UPON REQUEST FOR
CONNECTION WITH
HEATING SYSTEM
The following optional accessories are avail-
able to facilitate water and gas connection
of the boiler with the heating system:
– Installation plate, code 8075407
– Curve kit, code 8075418
– Cocks kit, code 8091806
– Replacement wall kit for the other
makes, code 8093900.
Detailed instructions for assembly of the
unions are provided with the kits.
2.4 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 the heating system
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
/h and gas 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
front panel; it contains all the technical data
identifying the boiler and the type of gas for
which the boiler is arranged.
2.4.1 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
certain cases even to cut out the safety
device with which the valve is equipped,
install an adequate filter on the gas pipe.
2.6 SYSTEM FILLING
Filling of the boiler and the system is done
by the charge cock (2 fig. 7).
The charge pressure, with the system cold,
2 INSTALLATION
KEY
1 D.H.W. inlet/outlet manifold
2 Filling cock
3 D.H.W. filter
4 Manifold by-pass
5 Water rate adjuster
6 D.H.W. exchanger
7 Microswitches
8 Flowmeter
9 Boiler discharge
Fig. 7
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