Hydraulic Connections; Electric Connection - Beretta Exclusive Boiler Green HE 25 B.S.I. Manuel D'installation Et D'utilisation

EXCLUSIVE BOILER GREEN HE B.S.I.

3- HYDRAULIC CONNECTIONS

Position and dimensions of hydraulic connections are specified in
figure 2:
A - CH return
3/4"
B - CH delivery 3/4"
C - Gas connection
3/4"
D - DHW outlet
1/2"
E - DHW inlet
1/2"
F - Support plate
G - Pre-installation template
If water hardness exceeds 28°Fr, it is recommended to use water
softeners, to prevent any limestone deposit in boiler due to exces-
sively hard water.
4- CLEANING THE SYSTEM AND
CHARACTERISTICS OF HEATING
CIRCUIT WATER
After installing a new system or replacing a boiler, clean the heating
system.
To ensure the product works correctly, after cleaning, additivating
and/or chemically treating the system (e.g.: anti-freeze, film-
formers, etc.), make sure the characteristics of the water satisfy
the parameters indicated in the table.
Parameters um
pH value -
Hardness ° F
Appearance -
Fe mg/kg
Cu mg/kg
5- INSTALLING THE EXTERNAL PROBE
Install the probe (fig. 4) in an area of smooth wall; for brick walls
or other irregular surfaces, prepare a smooth contact area if at all
possible.
Remove the upper plastic cover by turning it anti-clockwise.
Identify the wall fixing point and drill a hole for the 5x25 expansion
grip. Insert the expansion grip into the hole. Remove the card from
its housing. Fix the housing to the wall using the supplied screw.
Attach the bracket and tighten the screw. Loosen the cable grom-
met screw, push in the probe connection cable and connect it to the
electrical terminal. Remember to firmly secure the cable grommet
to prevent humidity from entering. Put the card back into its hous-
ing. Close the upper plastic cover by turning it clockwise. Firmly
secure the cable grommet.
Installing and connecting up the external sensor
The sensor must be installed on an external wall of the building
you want to heat, while taking care to comply with the instructions
below:
- It must be fitted on the facade most often exposed to wind, on a
wall facing NORTH or NORTH-WEST, and taking care to avoid
direct sunlight.
- It must be fitted about 2/3 up the height of the façade.
- It must not be near any doors, windows, outlets for air ducts, or
near chimneys or other heat sources.
The electrical connection to the external sensor must be formed
using a two-pole cable (not supplied), with a cross-section of 0,5
to 1 mm and a maximum length of 30 metres. It is not necessary
2
to worry about the polarity of the cable for the connection to the
external sensor. Do not form joints in this cable. If a joint has to be
made it must be watertight and adequately protected.
Any conduiting used for the connection cable must be sepa-
rate from the conduits used for the power cables (230 Vac).
6- CONDENSATE COLLECTION
The outlet collector (A, fig. 5) collects: the condensate water, any
evacuation water from the safety valve and the system outlet water.
The collector must be connected, by means of a rubber pipe,
to a suitable collection and evacuation system in the storm
water outlet and in compliance with current regulations.
The external diameter of the collector is 20 mm: we therefore
suggest using an Ø18-19 mm pipe, to be closed with a
suitable clamp (not supplied).
6
Water in heating Inlet water
circuit
7-8 -
- <15
- limpid
0,5 -
0,1 -
The manufacturer is not responsible for any damage caused
by the lack of a collection system.
The outlet connection line must have a guaranteed seal.
The manufacturer of the boiler is not responsible for any
flooding caused by interventions of the safety valve.
7- GAS CONNECTION
Before connecting appliance to gas pipe network, check the fol-
lowing:
- regulations in force are met
- gas type used is the same as set for appliance operation
- pipes are clean.
After installation make sure that all the joints have been made
airtight conforming to standard installation practices.
Gas must be piped externally. If the pipe goes through a wall it must
go through the central opening in the lower part of the template. It
is recommended to install an appropriately sized filter on the gas
line in case gas from the mains contains some small solid particles.

8- ELECTRIC CONNECTION

To access the electrical connections, proceed as follows:
- loosen the fixing screws (A) and remove the shell (fig. 3)
- lift up the panel and turn it forwards
- open the terminal board covers making them slide in the direc-
tion of the arrows (fig. 6: B high voltage connections 230 V, C low
voltage connections).
Connect the appliance to the mains electricity supply with a switch
featuring a distance of at least 3,5 mm (EN 60335-1, category III)
between each wire. The appliance uses alternating current at 230
Volt/50 Hz and complies with EN 60335-1. The appliance must be
connected to an efficient earth circuit, according to current legisla-
tion and bylaws.
Live and neutral (L-N) connections should also be respected.
The boiler can operate with phase-neutral or phase-phase power
supply.
The earth conductor must be a couple of cm longer than the
others.
Gas and/or water pipes may not be used to earth electrical
equipment.
The installer is responsible for making sure that the appliance
has an adequate earthing system; the manufacturer shall not
be held liable for eventual damages caused by incorrect us-
age or failing to earth the boiler.
Use the supplied power cable to connect the boiler to the mains
power supply.
Connect the ambient thermostat and/or time clock as shown in the
electrical diagram.
When replacing the power cable, use a HAR H05V2V2-F cable,
3 x 0,75 mm , Ø max. external 7 mm.
2
9- FILLING THE SYSTEMS, ELIMINATING THE
AIR AND EMPTYING THE SYSTEMS (fig. 7)
The systems can be filled up once the water mains have been con-
nected up.
This must be done while the installation is cold by:
DHW system:
- open the cold water stopcock to fill up the water tank
- open the hot water to check the water tank filled up and wait until
the water discharge
Heating system:
- making sure that the drain valve (B) is closed
- giving two or three turns to the cap of the automatic lower air vent
valve (C) to open it; to allow a continuous air vent, leave the cap
of the valve C open
- making sure that the cold water stopcock is opened turning it
anticlockwise
- opening the filling stopcock (H) until the pressure measured by
the hydrometer (D) is about 1,5 bar (blue zone)
- open the manual vent valve (F) and close it again once the sys-
tem has been vented; if necessary, repeat this operation until no
more air leaves the valve (F)
- close the filling stopcock (H)