Beretta Mynute Green 50 R.S.I. Manuel D'utilisation Et D'installation page 7

3.11 Circulator
Boilers are equipped with a circulator (already hydraulically
and electrically connected) whose effective performance
levels are shown in the chart.
The boilers are equipped with an anti-blocking system
which starts up an operation cycle after every 24 hours
of stop, with the mode selector in any position.
The "anti-blocking" function is active only if the
boilers are electrically powered.
It is strictly forbidden to operate the circulator without
water.
Maximum allowed water output <2200 l/h.
A minimum output of 800 l/h must be guaranteed in
the boiler, to prevent the differential pressure switch
being triggered.
To connect the system, we recommend the aid of
a hydraulic separator (supplied as an accessory),
connected as shown in the diagrams (fig. 8-9).
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 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.
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.
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.
750
700
650
600
550
500
450
400
350
300
250
200
150
100
50
0
0 200
For installation, follow the instructions supplied with the kit.
concentric pipe ø 60-100mm
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.
For installation, follow the instructions supplied with the kit.
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.
pressure drop
45° curve 90° curve
1 m 1,5 m
400 600 800 1000
Portata impianto [l/h] Flow rate (l/h)
Do not obstruct or choke the combustion air suction pipe in any way.
Horizontal
straight length of
1,85 m
"Straight length" means without bends, drainage terminals or joints.
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.
s
traight length of concentric pipe ø 80-125mm
4,85 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
80mm
20 + 20 m
"Straight length" means without bends, drainage terminals or joints.
ENGLISH
VELOCITÀ FISSA MASSIMA FIXED MAXIMUM SPEED
1200 1400 1600 1800
pressure drop
Vertical
45° curve 90° curve
2,85 m 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
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