Beretta Exclusive Boiler Green HE 25 B.S.I. Manuel D'installation Et D'utilisation page 7

- open the manual vent valve (E) and close it again once the sys-
tem has been vented; if necessary, repeat this operation until no
more air leaves the valve (E)
- each time the electricity supply to the boiler is switched on, an
automatic vent cycle lasting about 2 minutes starts, and the dis-
ing cycle.
NOTE: air extraction from the boiler takes place automatically,
through two automatic bleeding valves, C and .
NOTE:
ing tap I with the boiler turned off.
- Close the interception devices for the thermal system
- Open the automatic air vent valve (C)
- Unscrew the drain valve (B) by hand, keeping the elbow on the
hose in position to prevent it coming out of its seating
- The water from the system is discharged through the outlet col-
lector (A)
- Emptying out the lowest parts of the system.
The hot water system must be emptied every time there is risk of
freezing by:
- turning off the stopcock at the mains
- unscrew the cap on the hose adapter ( )
- connect a plastic hose to the hose adapter of the storage boiler
drain valve ( )
- open the valve drain device
- turning on all the hot and cold taps
- emptying out the lowest parts of the system.
ATTENTION
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). The
manufacturer is not responsible for any damage caused by the lack
of a collection system.
We recommend carrying out the sequence of operations given be-
above the air box; the tube supplied with the boiler must be con-
nected to the valve to let out the water into an outside container.
wait until the water starts coming out of the valve;
4. Use the room thermostat or the remote control panel to activate
request for heat so that the three-way will turn to heating;
5. Activate request for hot water as follows:
the three-way cycles from heating to domestic hot water and
vice versa about ten times (here the boiler will go into alarm as
it lacks gas and has to be reset every time this happens).
use the water tank thermostat;
6. Continue the sequence until water only comes out of the manual
air vent valve at this point;
9. Open the gas cock and ignite the boiler.
SUCTION
I)
light up in se-
button to interrupt the automatic vent-
from boiler, but outlets must be concentric or close enough to be
subject to similar wind conditions (within 50 cm).
Concentric exhaustion in common chimney (suction and
exhaustion in the same chimney).
Concentric roof exhaustion. Outlets like C13.
Exhaustion and suction in common separate chimneys,
but subject to similar wind conditions.
Wall or roof separate exhaustion and suction in different
pressure areas. Exhaustion and suction must never be located on
opposite walls.
-
sold pipes (1856/1).
-
Discharge on roof (similar to C33) and air suction from a
single existing smoke pipe
-
Refer to regulations in force for exhaustion of combustion products.
forced draught sealed chamber accessories can be used, as they
better adapt to installation characteristics. For fume extraction and
burning air restoration in boiler, use original pipes or other EC-cer-
rect as shown on instructions fume accessories provided for with.
that all appliances are sealed chamber type.
The fumes outlet duct can be aimed in the most suitable direction
for installation needs.
To install follow the instructions supplied with the kit.
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.
duct towards the boiler.
50
60
type appliance (sealed chamber) and must be safely
connected to fume exhaustion duct and burning air suction duct,
both getting outside; appliance cannot operate without these ducts.
Concentric ducts may be placed in the most suitable direction for
installation requirements but special care must be taken as regards
the external temperature and the length of the duct.
7,85
8,85
Rectilinear length means without bends, outlet ends and con-
nections.
EXCLUSIVE BOILER GREEN HE B.S.I.
pressure drop
45°
1
pressure drop
45°
1,3
pressure drop
45°
1,3
-
90°
1,5
90°
1,6
90°
1,6
7