Preliminary Checks - Beretta Mynute Boiler Green 25 B.S.I. E Bedienungs- Und Installationsanleitung

ENGLISH
"FORCED OPEN" INSTALLATION (TYPE B23P/B53P)
Fumes outlet duct Ø 80 mm (fig. 11a)
The fumes outlet duct can be aimed in the most suitable direction
for installation needs.
To install follow the instructions supplied with the kit.
In this configuration, the boiler is connected to the Ø 80 mm fumes
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
technical room with proper ventilation).
Non-insulated fumes outlet ducts are potential sources of danger.
The fumes outlet duct must be inclined 3° towards the boiler.
The boiler automatically adapts ventilation according to the
type of installation and the length of the duct.
Max length fumes
outlet duct Ø 80 mm
25 B.S.I.
35 B.S.I.
CONCENTRIC OUTLETS (ø 60-100) (fig. 11b)
The concentric outlets can be placed in the most suitable direction
for the requirements of the installation, respecting the maximum
lengths shown in the table.
The fumes outlet duct must be inclined 3° towards the boiler.
Non-insulated fumes outlet ducts are potential sources of danger.
The boiler automatically adapts ventilation according to the
type of installation and the length of the duct.
Do not obstruct or narrow the comburent air inlet duct in any way.
To install, follow the instructions supplied with the kits.
Max. linear length concentric
duct Ø 60-100 mm
Horizontal
25 B.S.I. 7,85 m
35 B.S.I.
7,85 m
Concentric ducts (Ø 80-125)
The relative adapter kit must be installed for this configuration.
Concentric ducts can be arranged in the most suitable direction for
installation requirements.
To install, follow the instructions provided with the specific kits for
condensation boilers.
Max. linear length concentric
duct Ø 80-125 mm
25 B.S.I.
35 B.S.I.
Twin ducts (Ø 80 mm) (Fig. 11c)
The twin ducts can be aimed in the most suitable direction for
installation needs.
To install, follow the instructions supplied with the specific kits for
condensation boilers.
The fumes outlet duct must be inclined 3° towards the boiler.
The boiler automatically adapts ventilation according to the
type of installation and the length of the ducts. Do not obstruct
or narrow the ducts in any way.
The maximum lengths of individual pipes are shown in the
graphs (Fig. 12).
The use of longer ducts will reduce the power output of the boiler.
Linear length twin
duct Ø 80 mm
25 B.S.I.
35 B.S.I.
8
Load losses for each
bend (m)
45°
60 m
1
60 m
Load losses for each
bend (m)
45°
Vertical
8,85 m 1,3
8,85 m
Load losses for each
bend (m)
45°
14,85 m
1
14,85 m
Load losses for each
bend (m)
45°
36+36 m
1
40+40 m
4 - IGNITION AND OPERATION
The first time you turn the boiler on and in case of maintenance
work, before using the appliance you must fill the siphon with
water and make sure that the condensation is evacuated
correctly. Fill the condensation collection siphon pouring 1
litre of water into the boiler combustion-analysis outlet with the
boiler off, and check that:
- the safety cut-off device is floating
- water is flowing correctly from the discharge pipe out of the
boiler
- the condensate outlet connection line is watertight.
If the condensate outlet circuit (siphon and pipes) is working
correctly, the condensation level will not exceed the maximum.
Filling the siphon before using the appliance, and the use of a
safety cut-off device inside the siphon, prevent exhaust gases from
being released into the environment.
Repeat during standard and non-standard maintenance work.
90°
1,5

4.1 Preliminary checks

First ignition is carried out by competent personnel from an
authorised Technical Assistance Service Beretta.
Before starting up the boiler, check:
a) that the supply networks data (electric, water, gas) corresponds
90°
to the label data
b) that piping leaving the boiler is covered by thermal insulation
sheath
1,6
c) that flue gas extraction and air suction pipes work correctly
d) that conditions for regular maintenance are guaranteed if the
boiler is placed inside or between furniture
e) the seal of the fuel adduction system
f) that fuel capacity corresponds to values requested by the boiler
g) that the fuel supply system has the correct capacity for the
necessary capacity to the boiler and that it has all the safety
and control devices prescribed by current regulations.
4.2 Appliance ignition
Every time the appliance is powered up, a series of data is shown
on the display including the flue gas sensor meter reading (-C-
90°
XX) (see pararaph 4.3 - fault A09); the automatic purge cycle then
starts, lasting around 2 minutes.
1,5
During this phase the symbol
To interrupt the automatic purge cycle proceed as follows: access
the electronic board by removing the shell, turning the instrument
panel towards you and unscrew the two screws of the small cover
on the electronic board to have access to the terminals.
Then:
- using a small screwdriver included, press the CO button (fig. 9).
Live electrical parts.
To start-up the boiler it is necessary to carry out the following
operations:
- power the boiler
- open the gas tap present in the system to allow fuel flow
- turn the mode selector (3 - fig. 1a) to the desired position:
Summer mode: turning the selector to the symbol summer
3a) the traditional function of only domestic hot water is activated.
If there is a domestic hot water request the digital display shows
90°
the hot water system temperature, the icon to indicate the hot water
supply and the flame icon
1,5
MAX
is shown on the monitor.
(fig.