Emptying The Heating System - Beretta Ciao S 20 C.S.I. Instrucciones De Instalacion Y Uso

ENGLISH
TWIN OUTLETS (ø 80) (fig. 11)
Twin outlets can be placed in the most suitable direction according
to the room requirements.
To use the combustion air suction pipe, one of the two inlets (G and
H) must be selected. Remove the closure plug which is fixed using
screws, and use the specific adaptor relating to the inlet selected.
The air inlet adaptor ø 80 (X) must be correctly oriented, it is
therefore necessary to fix it using the appropriate screws, so
that the locating tab does not interfere with the casing: X air
inlet adaptor ø 80 - Y air inlet adaptor from ø 60 to ø 80.
When necessary, the flue gas flange (F) must be removed using
a screwdriver as a lever. The table indicates the permitted linear
lengths. According to the length of the pipes used, it is necessary
to insert a flange, selecting one from those contained in the boiler
(see the following table).
20 C.S.I.
Pipe length
ø 80 [m]
1+1
> 1+1 ÷ 4+4
> 4+4 ÷ 10+10
(**) fitted in boiler
24 C.S.I. - 24 R.S.I.
Pipe length
ø 80 [m]
2+2
>2+2 ÷ 6+6
>6+6 ÷ 16+16
(**) fitted in boiler
3.6 Filling the heating system (fig. 13)
Once the hydraulic connections have been carried out, fill the heat-
ing system. This operation must be carried out with cold system
following this instructions:
- turn by two or three turns the automatic relief valve cap (I)
- make sure the cold water inlet tap is open
- turn on the filling tap (L fig. 13 for C.S.I. - external for R.S.I.) until
the pressure indicated by the water 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.

3.7 Emptying the heating system

To empty the system, proceed as follow:
- switch off the boiler
- loose the boiler outlet tap (M)
- empty the lowest points of the system.
3.8 Emptying the domestic hot water (only for C.S.I.
model)
When there is risk of frost, the domestic hot water system must be
emptied in the following way:
- close the main tap of the water mains
- open all the hot and cold water taps
- empty the lowest points.
WARNING
When carrying out the discharge of the safety valve (N), it must be
connected to a suitable collection system. The manufacturer is not
responsible for possible damages due to safety valve operation.
6
Load losses for each
Flue gas
bend (m)
flange (F)
45°
Ø 39
Ø 41 (**) 1,2
Ø 43
Load losses for each
Flue gas
bend (m)
flange (F)
45°
Ø 42
(**) 1,2
Ø 44
not installed
B22P/B52P Suction indoors and discharge outdoors
C12-C12x Discharge via concentric wall outlet. The pipes may leave the
boiler independently, but the outlets must be concentric or sufficiently
close together to be subjected to similar wind conditions (within 50 cm)
C22 Discharge via concentric outlet in common smoke pipe (suction and
discharge in the same pipe)
C32-C32x Discharge via concentric roof outlet. Outlets as for C13
C42-C42x Discharge and suction in common separate smoke pipes, but
subjected to similar wind conditions
C52-C52x Separate discharge and suction lines on wall or roof and in
areas with different pressures. The discharge and suction lines must
never be positioned on opposite walls
C62-C62x Discharge and suction lines using pipes marketed and certi-
fied separately (1856/1)
C82-C82x Discharge via single or common smoke pipe and wall suction line
C92-C92x Discharge on roof (similar to C33) and air suction from a sin-
gle existing smoke pipe
90°
1,7
90°
1,7
C32 C32
C52
C42
C82 C22 C22 C42
C12
C52
B22P
B52P
C12