Beretta Mynute Green E C.S.I. Series Installer And User Manual page 6

ENGLISH
3.7 Electrical wiring
To access the electrical wiring, proceed as follows:
- turn off the main switch on the system
- loosen the fixing screws (A, fig. 6) and remove the shell
- release the panel and turn it forwards (fig. 7)
- unscrew the two screws of the small cover on the electronic board to
have access to the terminals (B, fig. 8) (fig. 9).
Connect the appliance to the mains power supply with a switch featuring
a distance of at least 3,5 mm (EN 60335-1, category III) between each
wire.
The appliance operates with an alternating current of 230 Volt/50 Hz
and complies with EN 60335-1 standard.
b
It is obligatory to make the connection with a safe ground/earth, in
compliance with current directives.
b
The installer is responsible for ensuring the appliance is suitably
earthed; the manufacturer will not be liable for any damage
resulting from an incorrect or absent earth connection.
b
It is also advisable to respect the phase-neutral connection (L-N).
b
The ground/earth wire must be a couple of cm longer than the
others.
The boiler can operate with phase-neutral or phase-phase power
supply.
Gas and/or water pipes may not be used to earth electrical
equipment.
Use the supplied power cable to connect the boiler to the mains power
supply.
Connect the ambient thermostat and/or external programmable timer
clock as shown in the electrical diagram.
When replacing the power cable, use a HAR H05V2V2-F cable, 3x
0,75 mm , max. external Ø 7 mm.
2
3.8 Flue gas exhaustion and air aspiration (fig. 10)
For flue gas discharge, refer to the regulation in force. Always comply
with local standards of the Fire Department, the Gas Company and
with possible municipal dispositions.
The discharge of flue gas is guaranteed by the centrifugal fan located
inside the combustion chamber. 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 evacuating fumes and restoring boiler combustion
air that only original Riello pipes be used and that the connection is
made correctly as shown in the instructions provided with the flue gas
accessories.
A single smoke pipe can be connected to several appliances provided
that every appliance is the condensing type.
b
The maximum lengths of the pipes refer to the flue accessories
available in the catalogue.
b
The straight length measurement is inclusive of the first bend
(boiler connection), terminals and joints; with the exception of the
vertical coaxial duct Ø 60-100 mm, where the straight length does
not include the bends.
POSSIBLE OUTLET CONFIGURATIONS (fig. 11)
B23P-B53P - Suction in room, with external outlet.
C13-C13x - Concentric wall outlet. Pipes can leave the boiler
independently, but the outputs must be concentric or near enough in
order to be subjected to similar wind conditions (within 50 cm).
C33-C33x - Concentric roof outlet. Output as C13.
C43-C43x - Discharge and suction in common, separate smoke pipes,
but subjected to similar wind conditions.
C53-C53x - Separate wall or roof outlet and suction line and in areas
with different pressures. Outlet and suction line must never be placed
on opposite walls.
C63-C63x - Outlet and suction line carried out with pipes marketed and
certified separately (1856/1).
C83-C83x - Outlet in single or regular smoke pipe and wall suction line.
C93-C93x - Discharge on the roof (similar to C33) and air suction from
a single existing smoke pipe.
b
See regulation in force.
6
"FORCED OPEN" INSTALLATION (TYPE B23P/B53P)
Flue gas discharge pipe ø 80 mm (fig. 12)
The flue gas outlet pipe can be directed to the most suitable direction
according to installation requirements. For installation, follow the
instructions supplied with the kit.
In this configuration, the boiler is connected to the flue gas outlet pipe
of ø 80 mm through an adaptor of ø 60-80 mm (A).
b
In this case, the combustion air is picked up from the boiler
installation room (which must be a suitable technical room with
proper ventilation).
b
The non insulated flue gas outlet pipes are potential sources of
danger.
b
Arrange the flue gas discharge pipe so it slopes by 3° towards the
boiler.
b
The boiler automatically adapts the purging to the type of
installation and the length of the pipe.
Maximum length of the flue gas
discharge pipe Ø 80 mm
25 C.S.I. 80 m
30 C.S.I. 80 m
20 R.S.I. 80 m
30 R.S.I. 80 m
"AIRTIGHT" INSTALLATION (TYPE C)
The boiler must be connected to concentric or twin flue gas discharge
pipes and air suction pipes, both leading outdoors. The boiler must not
be operated without them.
Concentric pipes (Ø 60-100 mm) (Fig. 13)
The concentric pipes can be fitted in most suitable direction in relation
to installation requirements complying with the maximum lengths show
on the table.
b
Arrange the flue gas discharge pipe so it slopes by 3° towards the
boiler.
b
Non-insulated outlet pipes are potential sources of danger.
b
The boiler automatically adapts the purging to the type of
installation and the length of the pipe.
b
Do not obstruct or choke the combustion air suction pipe in any
way.
For installation, follow the instructions supplied with the kit.
Max straight length of concentric
pipe Ø 60-100 mm
Horizontal
25 C.S.I. 7.85 m
30 C.S.I. 7.85 m
20 R.S.I. 7.8 m
30 R.S.I. 7.85 m
Concentric pipes (Ø 80-125 mm) (Fig. 14)
For this configuration the specific adaptor kit must be installed. The
concentric pipes can be fitted in most suitable direction in relation
to installation requirements. For installation, follow the instructions
supplied with the specific kits for condensing boilers.
Maximum straight length of
concentric pipe Ø 80-125 mm
25 C.S.I. 14.85 m
30 C.S.I. 14.85 m
20 R.S.I. 20 m
30 R.S.I. 14.85 m
Pressure loss
45° curve 90° curve
1 m
Pressure loss
45° curve 90° curve
Vertical
8.85 m
8.85 m
1.3 m
8.8 m
8.85 m
Pressure loss
45° curve 90° curve
1 m
1.5 m
1.6 m
1.5 m