Electric Connection; Gas Connection - Beretta Junior 24 C.S.I. Manuel D'installation Et D'utilisation

ENGLISH
3.2 Securing the boiler to the wall and hydraulic connections
To fasten the boiler to the wall, use the cardboard template (fig. 4-5) in the
packaging. The position and size of the hydraulic connections are indicated
below:
A CH return
B CH delivery
C

gas connection

D DHW output
E DHW input
In case of replacement of Beretta boilers from previous type, there is an
adaptation kit of hydraulic connections available.

3.3 Electric connection

The boilers leave the factory completely wired with the power cable already
connected and they only need the connection of the ambient thermostat (AT)
to be carried out in the specific terminals (page 101).
To access the terminal board:
- turn off the system general switch
- undo the fixing screws (A) of the shell (fig. 6)
- move forward and then upwards the shell base to unhook it from the chas-
sis
- undo the fixing screws (B) of the instrument panel (fig. 7)
- turn the instrument panel upside down
- remove the terminal board cover (fig. 8)
- insert the cable of the possible T.A. (fig. 9)
The ambient thermostat must be connected as indicated on the wiring
diagram on page 101.
Ambient thermostat input in safety low voltage (24 Vdc).
The connection to the mains supply must be carried out through a sepa-
ration device with omnipolar opening of at least 3.5 mm (EN 60335-1,
category III).
The appliance operates with an alternating current of 230 Volt/50 Hz and an
electrical power of 100 W (and complies with the standard EN 60335-1 .
It is compulsory to carry out connection with an efficient earth circuit,
according to national and local legislation.
It is advisable to comply with neutral phase connection (L-N).
The earth wire must be a couple of centimetres longer than the oth-
ers.
Do not use gas and/or water pipes to earth electrical appliance.
The manufacturer declines liability for any damage if the appliance was not
connected to an earth circuit.
Use the power cable supplied to connect the boiler to the mains power
supply.
If the power cable is replaced, use a cable type HAR H05V2V2-F, 3 x
0.75 mm , with max. outside diameter 7 mm.
2
3.4 Gas connection
Before connecting the appliance to the gas network, check that:
- national and local regulations are complied
- the gas type is the one suitable for the appliance
- the piping is clean.
The gas pipe must be installed outdoor. If the pipe goes through the wall, it
must go through the central opening, in the lower part of the template.
It is advisable to install a filter of suitable dimensions on the gas line if the
distribution network had solid particles.
Once the appliance has been installed check that connections are sealed
according to current installation regulations
3.5 Fumes exhaustion and air suction
For burnt product exhaustion, refer to the national and local current regula-
tions. Always comply with local standards of the Fire Department, the Gas
Company and with possible municipal dispositions.
The release of combustion products is assured by a centrifugal fan placed
inside the combustion chamber and its correct operation is constantly
checked by a pressure switch. The boiler is supplied without the flue gas
outlet/air suction kit, since it is possible to use the accessories for appliance
with a forced draught sealed chamber that better adapts to the installation
characteristics.
It is essential for flue gas release and the restoration of boiler combustion air
to use certified pipes and that connection is carried out correctly as indicated
by the instructions supplied with the flue gas accessories.
With only one smoke pipe you can connect more pieces of appliance provided
that every piece of appliance is sealed chamber type.
4
3/4"
3/4"
3/4"
1/2"
1/2"
CONCENTRIC OUTLETS (ø 60-100)
The boiler has been designed to be connected to concentric outlet/suction
pipes and with the opening for air suction (M) closed (fig. 10). The concentric
outlets can be places in the most suitable direction according to room require-
ments, complying with the maximum lengths indicated in the table.
For installation, follow the instructions supplied with the kit.
According to the length of the pipes used, it is necessary to insert a flange,
selecting one from those contained in the boiler (see the following table).
When necessary, the flue gas flange (L) must be removed using a screw-
driver as a lever.
The table indicates the permitted linear lengths. According to the length of
the pipes used, it is necessary to insert a flange, selecting one from those
contained in the boiler (see the following table).
24 C.S.I.
Pipe length [m]
Flue gas flange (L)
up to 0.85
from 0.85 to 2.35
from 2.35 to 4.25
(**) fitted in boiler
28 C.S.I.
Pipe length [m]
Flue gas flange (L)
up to 0.85
from 0.85 to 1.70
from 1.70 to 2.70
from 2.70 to 3.40
Concentric pipes (ø 80/125)
The boiler has been designed to be connected to concentric outlet/suction
pipes and with the opening for air suction closed.
The concentric outlets can be placed in the most suitable direction accord-
ing to room requirements, complying with the maximum lengths indicated
in the table.
For installation, follow the instructions supplied with the kit.
To go through the wall, drill a hole of Ø 140 mm.
According to the length of the pipes used, it is necessary to insert a flange
selecting from those contained in the boiler (see table).
24 C.S.I.
Pipe length
Ø 80 125 [m] flange (L)
from 0.85 to 3.85
from 3.85 to 7.85
from 7.85 to 12.4 not installed
28 C.S.I.
Pipe length
flange (L)
Ø 80 125 [m]
from 0,96 to 2,86
from 2,86 to 5,21
from 5,21 to 8,06
from 8,06 to 9,96
Pay special attention to external temperature and pipe length. Refer to the
diagrams in order to establish if it is compulsory or not to use a condensa-
tion collector.
In case of operation at temperature lower than 60 °C, it is compulsory to use
a condensation collector.
If a condensation collector is used, provide a slope of the flue exhaust pipe
of 1% towards the collector.
Connect the condensation trap syphon to a white water outlet pipe.
Non insulated outlet pipes are potential sources of danger.
MAXIMUM LENGTH OF CONCENTRIC PIPES Ø 80/125
CONDENSATE BASIN
COMPULSORY
OUTSIDE TEMPERATURE (°C)
Load losses for each
bend (m)
45°
Ø 42
1
Ø 44 (**)
not installed
Load losses for each
bend (m)
45°
Ø 43
1
Ø 45
Ø 47
not installed
Load losses for each
Flue gas
bend (m)
45°
Ø 42
Ø 44
1.35
Load losses for each
Flue gas
bend (m)
45°
ø 43
ø 45
1.35
ø 47
not installed
CONDENSATE BASIN NOT
COMPULSORY
90°
1.5
90°
1.5
90°
2.2
90°
2.2