Beretta MYNUTE GREEN 50 R.S.I. Manuel D'utilisation page 6

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0 100
3.12 Flue gas discharge and air suction
Observe local legislation regarding flue gas discharge.
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 applian ce (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.
The maximum lengths of the ducts refer to flue systems available in
the catalogue.
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. 25
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 installation
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 3° towards the
boiler.
m
aximum length of the flue gas discharge
pipe ø 80mm
30 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 60-100mm) - fig. 26
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.
6
200 300 400 500 600 700
pressure drop
45° curve 90° curve
1 m
800 900 1000 1100 1200 1300
Portata (l/h)
Flow rate (l/h)
Arrange the flue gas discharge pipe so it slopes by 3° 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.
s
traight length of concen-
tric pipe ø 60-100mm
"Straight length" means without bends, drainage terminals or joints.
Concentric pipes (ø 80-125mm) - fig. 27
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 3° 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.
s
traight length of concentric pipe ø 80-125mm
Twin pipes (ø 80mm) - fig. 28-29
The twin pipes can face in the direction most suitable for installation requi-
rements.
For installation, follow the instructions supplied with the specific accessory
kit for condensation boilers.
1,5 m
Arrange the flue gas discharge pipe so it slopes by 3° 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.
m
aximum straight length of twin pipes ø
"Straight length" means without bends, drainage terminals or joints.
1400 1500 1600 1700 1800 1900
Horizontal Vertical
1,85 m 2,85 m
4,85 m
80mm
20 + 20 m
2000
pressure drop
45° curve 90° curve
1,3 m 1,6 m
pressure drop
45° curve 90° curve
1 m 1,5 m
pressure drop
45° curve 90° curve
1 m 1,5 m