Filling The Heating System - Beretta POWER GREEN 50 Manuel D'utilisation Et D'installation

WARNINGS
- For the electrical wiring of the pressure switch and the I.S.P.E.S.L. safety
thermostat, refer to the enclosed diagram.
- When installing outdoors, it is a good idea to insulate the piping and
protect the kits from atmospheric agents according to their electric
protection level.
flue gas discharge and air suction
For flue gas discharge, refer to Standards UNI-CIG 7129-7131 and UNI
11071. 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 fitted in the
boiler.
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.
For flue gas discharge and the restoration of boiler combustion air, it is
essential to use only our original, specific pipes for condensation boilers,
and to ensure that the connection is made correctly (as indicated in the
instructions supplied with the flue gas accessories).
The boiler is a C-type appliance (with airtight chamber), and must therefore
have a safe connection to the flue gas discharge pipe and to the combustion
air suction pipe; these both carry their contents outside, and are essential
for the operation of the appliance.
Both concentric and twin terminals are available.
As envisaged by Standard UNI 11071, the boiler is designed to
take in and dispose of flue gas condensate and/or meteoric water
condensate deriving from the flue gas discharge system. It does this
via its own drain-tap, if an external drain-tap is not fitted during the
design or installation phase.
WARNING: if a condensate relaunch pump is installed, check the
technical data (provided by the manufacturer) regarding output, to
ensure it operates correctly.
"fORcEd OPEN" INSTALLATION (TyPE b23P-b53P) - fig.41
flue gas discharge pipe ø 80mm
To arrange this configuration, you must use the specific connection point
supplied as an accessory.
For installation, follow the instructions supplied with the kit.
In this case, the combustion air is picked up from the boiler instal-
lation room (which must be a suitable technical room with proper
ventilation).
The non insulated flue gas outlet pipes are potential sources of
danger.
Arrange the flue gas discharge pipe so it slopes by 1% towards the
boiler.
m
aximum length of the flue gas
discharge pipe ø 80mm
Power Green 50
"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 60-100mm) - fig.42
To connect the concentric pipes, use the specific adaptor supplied as an
accessory.
The concentric pipes can face in the direction most suitable for installation
requirements, but special attention should be paid to the external temperature
and the length of the pipe.
Arrange the flue gas discharge pipe so it slopes by 1% towards the
boiler.
Non-insulated outlet pipes are potential sources of danger.
The boiler automatically adapts the purging to the type of installation
and the length of the pipe.
Do not obstruct or choke the combustion air suction pipe in any way.
For installation, follow the instructions supplied with the kit.
pressure drop
45° curve 90° curve
30m 0.5m
Power Green 50
"Straight length" means without bends, drainage terminals or joints.
concentric pipes (ø 80-125mm) - fig.43
To connect the concentric pipes, use the specific adaptor supplied as an
accessory.
The concentric pipes can face in the direction most suitable for installation
requirements, but special attention should be paid to the external tempera-
ture and the length of the pipe.
Arrange the flue gas discharge pipe so it slopes by 1% towards the
boiler.
Non-insulated outlet pipes are potential sources of danger.
The boiler automatically adapts the purging to the type of installation
and the length of the pipe.
Do not obstruct or choke the combustion air suction pipe in any way.
For installation, follow the instructions supplied with the kit.
Power Green 50
Twin pipes (ø 80mm) - fig.44/45
The twin pipes can face in the direction most suitable for installation re-
quirements.
For installation, follow the instructions supplied with the specific accessory
kit for condensation boilers.
Arrange the flue gas discharge pipe so it slopes by 1% towards the
boiler.
The boiler automatically adapts the purging to the type of installation
and the length of the pipes. Do not obstruct or choke the pipes in any
way.
The use of longer pipes reduces the boiler output.
Power Green 50
"Straight length" means without bends, drainage terminals or joints.

filling the heating system

Once the hydraulic connections have been carried out, fill the heating
system.
This operation must be carried out with cold system following this instruc-
tions:
- open the plug of the boiler's automatic air vent (A) - Fig.47 by turning it
two or three times; to allow a continuous air discharge, leave the plug
open
- open the radiator drain valves
- turn on the filling tap (outside the boiler) and wait until the pressure indi-
0.8m
cated on the hydrometer is between 1.5 bar and 2 bar. The filling procedure
must be carried out slowly, in order to free the air bubbles in the water and
allow them to be released via the boiler and heating system vents. For the
instructions on how to free the air bubbles, refer to the specific paragraph
- close the filling tap
- close the radiator drain valves when only water begins to seep out of
them
WARNING: the boiler is not fitted with an expansion tank, so you must install
a closed tank on the system to ensure the appliance functions correctly.
The dimensions of the expansion tank must be suitable for the heating
system characteristics, and the tank capacity must meet the requisites of
the current regulations (collection R).
If the pressure value approaches 3.5 bar, there is the risk of the safety
valve being triggered. In this case, you should request the intervention of
professionally qualified personnel.
Emptying the heating system
Before starting emptying, switch off the electricity supply by turning off the
main switch of the system.
- Turn off the heating system taps.
- Manually loosen the system drain valve (b) - Fig.48 - and connect the pipe
(supplied with the boiler) to it in order to drain the water into an external
container.
s
traight length of concentric
pipe ø 60-100mm
Horizontal Vertical
1.85m 2.85m
s
traight length of concentric
pipe ø 80-125mm
4.85m
m
aximum straight length
of twin pipes ø 80mm
20 + 20m
pressure drop
45° curve 90° curve
0.85m
0.5m
pressure drop
45° curve 90° curve
1.35m 2.2m
pressure drop
45° curve 90° curve
0.5m 0.8m
7