Gas Connection - Beretta Mynute S 24 C.S.I. Manuel D'installation Et D'utilisation

- turn the instrument panel upside down
- remove the terminal board cover (fi g. 8)
- insert the cable of the possible T.A. (fi g. 9)
The room thermostat must be connected as indicated on the wiring
diagram.
Room thermostat input in safety low voltage (24 Vdc).
The connection to the mains supply must be carried out through a
separation device with an omnipolar opening of at least 3.5mm (EN
60335-1, category III).
The appliance operates with an alternating current of 230 Volt/50
Hz and an electrical power of 125W for 24 C.S.I. - 127W for 28
C.S.I.- 28 R.S.I. - 88W for 24-28 C.A.I. E - 172W for 35 C.S.I. and
35 R.S.I. (and complies with the standard EN 60335-1).
It is compulsory to carry out connection with an effi cient 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 others.
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 mm2, with max. outside diameter 7 mm.

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 fi lter 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 (Mynute S C.S.I. -
Mynute S R.S.I.)
For fumes exhaustion, refer to the current local and national regu-
lations. 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 fl ue gas outlet/air suction kit, since it is possible to use
the accessories for appliance with a forced draught sealed cham-
ber that better adapts to the installation characteristics.
It is essential for fl ue gas release and the restoration of boiler
combustion air to use certifi ed pipes and that connection is car-
ried out correctly as indicated by the instructions supplied with the
fl ue gas accessories. With only one smoke pipe you can connect
more pieces of appliance provided that every piece of appliance is
sealed chamber type.
"FORCED OPEN" INSTALLATION (TYPE B22P/B52P)
Fumes outlet duct Ø 80 mm (fi g. 10a)
The fumes outlet duct can be aimed in the most suitable direction
for installation needs. To install follow the instructions supplied with
the kit.
In this confi guration, the boiler is connected to the Ø 80 mm
fumes outlet duct by means of a Ø 60-80 mm adaptor.
In this case, the combustion supporting air is taken from the
room in which the boiler is installed, which must be a suitable
and ventilated technical room.
Non-insulated fumes outlet ducts are potential sources of
danger.
When necessary, the fl ue gas fl ange (F) must be removed using a
screwdriver as a lever.
The boiler automatically adapts ventilation according to the type of
installation and the length of the duct.
Pipe length
ø 80 [m]
up to 3
from 3 to 8
from 8 to 14
from 14 to 20 not installed
28 C.S.I. - 28 R.S.I.
Pipe length
ø 80 [m]
up to 1
from 1 to 4
from 4 to 8
from 8 to 20 not installed
35 C.S.I. - 35 R.S.I.
Pipe length
ø 80 [m]
up to 5
from 5 to 12 not installed
(**) fi tted in boiler
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 (E) closed (fi g.
10b). The concentric outlets can be places in the most suitable
direction according to room requirements, complying with the maxi-
mum lengths indicated in the table. For installation, follow the in-
structions supplied with the kit. According to the length of the pipes
used, it is necessary to insert a fl ange, selecting one from those
contained in the boiler (see the following table). When necessary,
the fl ue gas fl ange (F) must be removed using a screwdriver as a
lever. The table indicates the permitted linear lengths. According to
the length of the pipes used, it is necessary to insert a fl ange, select-
ing one from those contained in the boiler (see the following table).
Pipe length
ø 60-100 [m]
up to 0,85
from 0,85 to 2
from 2 to 3
from 3 to 4,25 not installed
28 C.S.I. - 28 R.S.I.
Pipe length
ø 60-100 [m]
up to 0,85
from 0,85 to 1,7
from 1,7 to 2,7
from 2,7 to 3,4 not installed
35 C.S.I. - 35 R.S.I.
Pipe length
ø 60-100 [m]
up to 0,85
from 0,85 to 2,3 not installed
(**) fi tted in boiler
24 C.S.I.
Load losses for each
Flue gas
bend (m)
fl ange (F)
45°
Ø 42
Ø 44 (**)
1,2
Ø 46
Load losses for each
Flue gas
bend (m)
fl ange (F)
45°
Ø 41
Ø 43 (**)
1,2
Ø 45
Load losses for each
Flue gas
bend (m)
fl ange (F)
45°
Ø 49 (**)
1,2
24 C.S.I.
Load losses for each
Flue gas
bend (m)
fl ange (F)
45°
Ø 42
Ø 44 (**)
1
Ø 46
Load losses for each
Flue gas
bend (m)
fl ange (F)
45°
Ø 41
Ø 43 (**)
1
Ø 45
Load losses for each
Flue gas
bend (m)
fl ange (F)
45°
Ø 49 (**)
1
Mynute S
90°
1,7
90°
1,7
90°
1,7
90°
1,5
90°
1,5
90°
1,5
5