Beretta CIAO AT 29 C.S.I. Installer And User Manual page 6

ENGLISH
For the indication of the maximum lengths of air supply and fumes
exhaust pipes, refer to the following diagrams.
25 C.S.I. - MAX LENGTH Ø 80 + Ø 80
40
35
30
25
20
15
10
5
0
0 5 10 15
air suction pipe length (m)
29 C.S.I. - MAX LENGTH Ø 80 + Ø 80
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 (fig. 22)
Thanks to the boiler characteristics, a flue 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 force.
The table shows the standard configurations allowed.
Table of standard pipe configurations (*)
1 bend - 90° ø 80
Air suction
4.5m pipe ø 80
1 bend - 90° ø 80
1m pipe ø 80
Flue gas discharge
Reduction from ø 80 to ø 60
1 T-fitting ø 60
25 C.S.I.
Flange Ø 40 5m pipe ø 60 vertical
Flange Ø 45 9m pipe ø 60 vertical
No flange 17m pipe ø 60 vertical
29 C.S.I.
No flange 5m pipe ø 60 vertical
(*) Use flue gas system accessories in plastic (PP) for condensing boilers.
The configurations Ø 60 show test data verified in the laboratory.
In the case of installations that differ from those indicated in the
"standard configuration" tables, refer to the equivalent linear lengths
Ø 80 - Ø 60 below.
6
20 25 30 35 40
12 14 16 18 20 22 24
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. 23)
Once the hydraulic connections have been carried out, fill the heating
system. This operation must be carried out with a cold system, following
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 filling tap (B) until the pressure indicated by the water
45 50
pressure gauge is between 1 and 1.5 bar.
Once filling is complete, close the filling tap.
The boiler has an efficient air separator so no manual intervention is
needed. The burner switches on only if the air relief phase is finished.
3.10 Draining the heating system (fig. 23)
To empty the system, proceed as follows:
- switch off the boiler
- loosen the boiler drain valve (C)
- drain the lowest points of the system.
3.11 Draining the domestic hot water system (fig. 23)
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
manufacturer is not responsible for possible damages due
to safety valve operation.
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4 - IGNITION AND OPERATION
4.1 Preliminary checks
When the boiler is first started the siphon for collecting the
condensate is empty. it is therefore indispensable to create a
head of water filling the siphon before starting up, following these
instructions:
• remove the siphon by releasing it from the plastic pipe connecting
to the combustion chamber
• fill the siphon about 3/4" full with water, making sure it is free of
any impurities
• check the float of the plastic cylinder
• put back the siphon, being careful not to empty it, and secure it
with the clip.
The plastic cylinder inside the siphon has the job of preventing
combustible gas coming out into the surroundings if the appliance
is started without first creating the head of water in the siphon.
Repeat this operation during routine and extraordinary maintenance
operations.
Before starting up the boiler, check:
a) that the supply networks data (electric, water, gas) corresponds to
the label data
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 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
To start up the boiler it is necessary to carry out the following operations:
- power the boiler
- turn on the gas tap to allow fuel flow
- set the room thermostat to the required temperature (~20°C)
- turn the mode selector to the required position:
Linear equivalent in metres Ø80 (m)
5
8
2.5
5.5
12