Electrical Wiring; Gas Connection - Beretta Power Green 50 Betriebs- Und Installationshandbuch

cleaning the system / characteristics of the heating
circuit water
In the case of a new installation or replacement of the boiler, it is necessary
to clean the heating system.
IT is advisable to place a filter on the system to hold back the impurities (a
sludge remover filter).
To ensure the device works well, top up the additives and/or chemical
treatments (e.g. anti-freeze liquids, filming agents, etc.) and check the
parameters in the table are within the values indicated.
Parameters um
PH value
Hardness ° F
Appearance
Positioning the boiler and making the hydraulic connections
Before installing, check you have the necessary spaces for the system,
considering the dimensions of the boiler, the flue gas discharge system,
and the hydraulic circuit.
The boiler is supplied as standard with a boiler support plate f (Fig.34). The
position and dimensions of the hydraulic connections are shown in detail.
In addition, a cardboard template is included with the standard equipment
to assist the installer in his work.
For the assembly, proceed as follows:
- fix the boiler support plate to the wall and, with the aid of a level, check
it is perfectly horizontal
- mark the position of the 4 holes needed for fixing the boiler support plate
- check all the measurements are precise, then drill the holes using a bit
with the diameter indicated above
- fix the plate to the wall
Make the hydraulic connections. After installing the boiler and connecting
it to the water and gas supplies, fit the couplings cover.
Installing the upper cover and couplings cover
Upper cover
Fit the upper cover and fix it to the boiler with the screws A (Fig.35) supplied.
The cover must be fitted before installing the suction and flue gas
discharge system.
When you need to remove the casing, loosen the 3 fixing screws of
the upper cover.
couplings cover
Fit the couplings cover (supplied as standard), ensuring the hooks are
inserted in the slots on the lower part of the boiler. Fix the couplings cover
with the screws A1 (Fig.36) contained in the documentation wallet in the
boiler.
The manufacturer will not be liable for any damage resulting from the
failure to fit the covers.
condensate collection
The system must be made so as to avoid any freezing of the condensate
produced by the boiler (e.g. by insulating it). You are advised to install a
special drainage collection basin in polypropylene (widely available on the
market - standard DIN 4102 B 1) on the lower part of the boiler (hole Ø
42), as shown in Fig.37.
Position the flexible condensate drainage hose (supplied with the boiler),
connecting it to the manifold (or another examinable coupling device
purposely arranged, as indicated in standard UNI EN 677). Avoid creating
any bends, where the condensate could collect and possibly freeze.
The manufacturer will not be liable for any damage resulting from the failure
to channel the condensate, or from its freezing.
The drainage connection line must be perfectly sealed, and well
protected from the risk of freezing.
Before the initial start-up of the appliance, check the condensate will be
properly drained off.
6
Heating circuit filling
water water
7-8 -
- 15-20
- clear
Installing the external probe
The correct operation of the external probe is fundamental for the good
operation of the climatic control.
INSTALLING ANd cONNEcTING THE EXTERNAL PRObE
The probe must be installed on an external wall of the building to be
heated, observing the following indications:
- it must be mounted on the side of the building most often exposed to
winds (the NORTH or NORTHWEST facing wall), avoiding direct solar
irradiation;
- it must be mounted about 2/3 of the way up the wall;
- it must not be mounted near doors, windows, air outlet points, or near
smoke pipes or other heat sources.
The electrical wiring to the external probe is made with a bipolar cable
with a section from 0.5 to 1mm
30 metres. It is not necessary to respect the polarity of the cable when
connecting it to the external probe. Avoid making any joints on this cable
however; if joints are absolutely necessary, they must be watertight and
well protected.
Any ducting of the connection cable must be separated from live cables
(230V AC).
fIXING THE EXTERNAL PRObE TO THE WALL
The probe must be fixed on a smooth part of the wall; in the case of ex-
posed brickwork or an uneven wall, look for the smoothest possible area.
Loosen the plastic upper protective cover by turning it anticlockwise.
After deciding on the best fixing area of the wall, drill the holes for the
5x25 wall plug.
Insert the plug in the hole.
Remove the card from its seat.
Fix the box to the wall, using the screw supplied.
Attach the bracket, then tighten the screw.
Loosen the nut of the cable grommet, then insert the probe connection
cable and connect it to the electric clamp.
To make the electrical connection between the external probe and the
boiler, refer to the "Electrical wiring" chapter.
Remember to close the cable grommet well, to prevent any air
humidity getting in through the opening.
Put the card back in its seat.
Close the plastic upper protective cover by turning it clockwise. Tighten
the cable grommet very well.

Electrical wiring

To access the electrical wirings, proceed as follows:
- turn off the system general switch
- remove the couplings cover by loosening the screws A (Fig.39)
- loosen the screw that fixes the electric connections box, then remove the
box from its seat
One side of the box contains the high voltage electric connections
(230V), while the other side contains the low voltage ones (Fig.40).
Refer to the wiring diagrams when making the connections. The connection
to the mains supply must be made via 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 164 W (and complies with the standard EN 60335-1).
It is obligatory to make the connection with a safe earthing, in compliance
with the current directives.
It is also advisable to respect the phase-neutral connection (L-N).
The earth wire must be a couple of cm longer than the others.
The boiler can operate with a phase-neutral or phase-phase supply. For
power supplies that are not earthed, it is necessary to use an isolating
transformer with earth-anchored secondary.
do not use gas and/or water pipes to earth electrical
appliance.
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.
Use the power cable supplied to connect the boiler to the mains power
supply.
If the power cable needs to be replaced, use a cable of the HAR
H05V2V2-f type, 3 x 0.75mm
7mm.

Gas connection

The gas connection must be made respecting the installation regulations in
force, and sized to ensure the correct gas delivery to the burner.
Before making the connection, check that:
- the gas type is suitable for the appliance
- the piping is thoroughly clean
It is advisable to install a filter of suitable dimensions on the gas line if the
distribution network contains solid particles.
Once the appliance has been installed, check the connections are sealed
according to current installation regulations.
(not supplied), with a maximum length of
2
, with a maximum external diameter of
2