Preliminary Checks - Beretta Mynute Sinthesi 25 C.S.I. Manual De Instalación Y De Uso

pipe length
Ø 80 (m)
from 0.5 to 7
25 C.S.I. from 7 to 13.5
from 13.5 to 19.5 not installed
from 0.5 to 5
29 C.S.I.
from 5 to 12
POSSIBLE OUTLET CONFIGURATIONS (fig. 21)
B22P/B52P - Suction in room, with external discharge.
C12-C12x - Concentric discharge on wall. Pipes can leave the boiler
independently, but the outputs must be concentric or near enough in
order to be subjected to similar wind conditions (within 50 cm).
C22 - Concentric discharge in regular smoke pipe (suction and dis-
charge in the same pipe).
C32-C32x - Concentric discharge on the roof. Outputs as C12.
C42-C42x - Discharge and suction in regular smoke pipes (separated
but subject to similar wind conditions).
C52-C52x - Separated discharge and suction on wall or roof, in areas
with different pressure levels. The discharge and suction lines must
never be placed on opposite walls.
C62-C62x - Discharge and suction using pipes marketed and certified
separately (1856/1).
C82-C82x - Discharge in a single or regular smoke pipe, and suction
on the wall.
C92-C92x - Discharge on roof (similar to C32) and air suction via a
single existing smoke pipe.
Refer to the regulations in force.
For the indication of the maximum lengths of the single pipe, refer to
the following charts.
25 C.S.I.
40
35
30
25
20
15
10
5
0
0 5 10 15 20
air suction pipe length (m)
29 C.S.I.
22
20
18
16
14
12
10
8
6
4
2
0
0 2 4 6 8 10
air suction pipe length (m)
Twin pipes ø 80 with ducting Ø 60
Thanks to the boiler characteristics, a fl ue gas discharge pipe Ø 80 can be
connected to the ducting ranges Ø 60. For the ducting, you are advised
to make a project calculation in order to respect the relevant standards in
pressure drops for
each bend (m)
air fl ange
45°
Ø 40
Ø 45 1
Ø 45
1
not installed
25 30 35 40 45
12 14 16 18 20 22 24
force. The table shows the standard confi gurations allowed.
Table of standard pipe confi gurations (*)
90°
Air suction
1.5
Flue gas discharge
1.5
25 C.S.I.
Flange Ø 40
Flange Ø 45
No flange
29 C.S.I.
No flange
(*) Use fl ue gas system accessories in plastic (PP) for condensing boilers.
The confi gurations Ø 60 show test data verifi ed in the laboratory.
In the case of installations that differ from those indicated in the "stand-
ard confi guration" tables, refer to the equivalent linear lengths Ø 80 - Ø
60 below.
COMPONENT Ø 60
Bend 45° Ø 60
Bend 90° Ø 60
Extension 0.5m Ø 60
Extension 1.0m Ø 60
Extension 2.0m Ø 60
In any case, the maximum lengths declared in the booklet are
guaranteed, and it is essential not to exceed them.
3.9 Filling the heating system (fig. 22)
Once the hydraulic connections have been carried out, fi ll the heating
system. This operation must be carried out with a cold system, follow-
ing these instructions:
- open the automatic air vent valve cap (A) by two or three turns
- make sure the cold water inlet tap is open
- open the fi lling tap (B) until the pressure indicated by the water pres-
sure gauge is between 1 and 1.5 bar.
Once fi lling is complete, close the fi lling tap.
The boiler has an effi cient air separator so no manual intervention is
needed.
The burner switches on only if the air relief phase is fi nished.
The correct operation of the external probe (supplied as an accessory)
is fundamental for good climatic control operation.
3.10 Draining the heating system (fig. 22)
To empty the system, proceed as follows:
- switch off the boiler
50
- loosen the boiler discharge tap (C)
- drain the lowest points of the system.
3.11 Draining the domestic hot water system (fig. 22)
When there is risk of frost, the domestic hot water system must be
emptied in the following way:
- turn off the main water supply tap
- turn on all the hot and cold water taps
- drain the lowest points.
When carrying out the discharge of the safety valve (D), it
must be connected to a suitable collection system. The man-
ufacturer is not responsible for possible damages due to
safety valve operation.
4 - IGNITION AND OPERATION

4.1 Preliminary checks

Before starting up the boiler, check:
a) that the supply networks data (electric, water, gas) corresponds to
the label data
26 28
b) that piping leaving the boiler is covered by thermal insulation
sheath
c) that flue gas extraction and air suction pipes work correctly
d) that conditions for regular maintenance are guaranteed if the boil-
er 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
Mynute Sinthesi C.S.I.
1 bend - 90° ø 80
4.5m pipe ø 80
1 bend - 90° ø 80
1m pipe ø 80
Reduction from ø 80 to ø 60
1 T-fitting ø 60
5m pipe ø 60 vertical
9m pipe ø 60 vertical
17m pipe ø 60 vertical
5m pipe ø 60 vertical
Linear equivalent in metres Ø80 (m)
5
8
2.5
5.5
12
7