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- the boiler is correctly connected to the
gas and electricity supply circuits;
- the boiler is constantly fed;
- the boiler ignition is not blocked;
- the essential components of the boiler
are all in working order.
In these conditions the boiler is protected
against frost down to an environmental
temperature of -5°C.
ATTENTION: In the case of installation
in a place where the temperature drops
below 0°C, the connection pipes must be
protected.
2.2
COMPLEMENTARY
ACCESSORIES
To simplify connections to the hydraulic
and gas supplies, it is also possible to use
the following accessories:
– Mounting plate, code 8081220
– Kit with bends, code 8075423
– Kit with faucets, code 8091806
– Kit with faucets boiler
“T ErP”
, code
8091820
– Kit for the replacement of wall-
mounting assemblies of other manufac-
turers, code 8093900
– Solar kit for the instantaneous, code
8105101, in coupling to kit INSOL
– Mixed area kit ZONA MIX, code 8092234
– Solar kit INSOL only for heating boilers,
code 8092235
– Antifreeze heaters kit -15°C, code
8089805
– RS-485 board kit for managing up to 8
boilers in cascade code 8092243.
For detailed information on the assembly
of fittings, see the instructions contained
in the box.
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 (new
system), X400 and X800 (old system) or
Fernox Cleaner F3
.
Complete instructions are provided with
the products but, for further informa-
tion, you may directly contact SENTINEL
PERFORMANCE SOLUTIONS LTD or
FERNOX COOKSON ELECTRONICS.
For long-term protection agains corrosion
and deposits, the use of inhibitors such as
Sentinel X100 or Fernox Protector F1
is
recommended after cleaning the system.
It is important to check the concentration
of the inhibitor after each system modifi-
cation 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 discharge
during interventions. If the heating system
is on a higher floor than the boiler, install
the on/off taps supplied in kit optional on
the heating system delivery/return pipes.
WARNING: Failure to clean the heat
system or add an adequate inhibitor inva-
lidates the device’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
maximum 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.
2.3.1
Connection of condensation
water trap
The drip board and its water trap must be
connected to a civil drain through a pipe
with a slope of at least 5 mm per metre
to ensure drainage of condensation water.
The plastic pipes normally used for civil
drains are the only type of pipe which is
appropriate for conveying condensation
to the building’s sewer pipes.
2.3.2
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.
2.4
INITIAL PHASE SYSTEM FILLING
(fig. 5)
Filling of the boiler and the system is
done by the system filling (11). The charge
pressure, with the system cold, must be
between
1
and
1.5 bar
.
N.B. The “25 T - 35 T ErP” versions the
loading is done by loading tap externally
mounted by the installer.
2.4.1
System draining (fig. 5)
To drain the system, turn off the boiler and
use the discharge valve (7).
2.5
INSTALLATION OF
COAXIAL DUCT
ø 60/100 - ø 80/125 (fig. 6)
The axial suction and discharge pipes are
supplied in a special kit (that can be pur-
chased separately) along with assembly
instructions.
The diagrams of fig. 6 illustrate some
examples of different types of dischar-
ge modalities allowed and the maximum
lengths that can be reached.
Fig. 4
KEY
1 Diverter valve (VD)
2 D.H.W. sensor (SS)
3 D.H.W. exchanger with plates
4 Water pressure transducer (TPA)
5 Air release vent
6 Pump high efficiency (PI)
7 Boiler discharge
8 3 BAR safety valve
9 D.H.W. filter
10 D.H.W. flowmeter sensor
11 System loading
