8
CIAO GREEN R.S.I.
Suction pipe length (m)
Discharge pipe length (m)
80
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
0 5 10 1 5 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95
100
105
110
MAXIMUM STRAIGHT LENGTH Ø 80
4 - SWITCHING ON AND OPERATION
4.1 Switching on the appliance
Every time the appliance is powered up, a series of data is shown on the
display including the ue gas sensor meter reading (-C- XX) (see paragraph
4.3 - fault A09); the automatic purge cycle then starts, lasting around 2 min-
utes. During this phase, the symbol is shown on the monitor (g. 25).
To interrupt the automatic purge cycle proceed as follows:
access the electronic board by removing the housing, turning the instru-
ment panel towards you and opening the board casing (g. 16)
Then:
- using a small screwdriver included, press the CO button (g. 26).
Liveelectricalparts(230VAC).
To start up the boiler it is necessary to carry out the following operations:
- power the boiler
- open the gas tap to allow the ow of fuel
- set the room thermostat to the required temperature (~20°C)
- turn the mode selector to the desired position:
Winter mode: by turning the mode selector (g. 27) within the area marked
+ and -, the boiler provides hot water for heating and, if connected to an
external storage tank, supplies hot water for DHW.
If there is a heat request, the boiler switches on. The digital monitor indi-
cates the heating water temperature, the icon to indicate heating and the
ame icon (g. 29).
If there is a domestic hot water request, the boiler switches on.
The digital display shows the hot water system temperature, the icon to
indicate the hot water supply and the ame icon (g. 30)
Adjustment of the heating water temperature
To adjust the heating water temperature, turn the knob with symbol
(g. 27) within the area marked + and -.
Depending on the type of system, it is possible to pre-select the suitable
temperature range:
- standard systems 40-80°C
- oor systems 20-45°C.
For further details, consult the “Boiler conguration” section.
Adjusting heating water temperature with an external probe connected
When an external probe is connected, the value of the delivery tempera-
ture is automatically chosen by the system which rapidly adjusts ambient
temperature to the changes in external temperature. To increase or decre-
ase the temperature with respect to the value automatically calculated by the
electronic board, turn the heating water selector clockwise to increase and
anticlockwise to decrease. Adjustment settings range from comfort levels - 5
to + 5 which are indicated on the digital display when the knob is turned.
Summer mode (only active when the external storage tank is connect-
ed):turning the selector to the summer mode symbol (g. 28) activates
the traditional domestic hot water only function, the boiler supplies water
at the temperature set on the external storage tank.
If there is a domestic hot water request, the boiler switches on. The digital
display shows the hot water system temperature, the icon to indicate the
hot water supply and the ame icon (g. 30).
Adjustment of the domestic hot water temperature
CASE A heating only with storage tank - adjustment does not apply.
CASE B heating only + external storage tank with thermostat - adjustment
does not apply.
CASE C heating only + external storage tank with probe - to adjust the
temperature of the domestic hot water in the storage tank, turn the knob
with the symbol (g. 32) clockwise to increase water temperature and
anti-clockwise to lower it.
The boiler is standby status until, after a heat request, the burner switches
on. The boiler continues to operate until the temperatures set on the boiler
are reached, or the heat request is met; after which it goes back on standby.
The digital monitor indicates the fault code detected.
AutomaticTemperatureControlSystemfunction(S.A.R.A.)g.34
Setting the heating water temperature selector to the area marked “AUTO”
(temperature range 55 to 65°C), activates the automatic temperature con-
trol system: according to the temperature set on the room thermostat and
the time taken to reach it, the boiler varies automatically the heating water
temperature reducing the operating time, allowing greater ease of operation
and energy saving.
Reset function
To restore operation, set the function selector to (g. 31), wait 5-6 sec-
onds then set the function selector to the required position.
At this point the boiler will automatically start.
N.B. If the attempt to reset the appliance does not activate operation, con-
tact the Technical Assistance Service.
4.2 Switching off
Temporary switch-off
In case of absence for short periods of time, set the mode selector (g. 31)
to (OFF).
In this way (leaving the electricity and fuel supplies enabled), the boiler is
protected by the following systems:
Anti-frost device: when the temperature of the water in the boiler falls
below 5°C, the circulator and, if necessary, the burner are activated at mini-
mum output levels to bring the water temperature back to the values for
safety (35°C). During the anti-frost cycle, the symbol (g. 35) appears
on the digital monitor.
Circulator anti-blocking function: an operation cycle is activated every
24 hours.
DHW Antifreeze (only when connected to an external storage tank with
probe): the function is activated if the temperature measured by the storage
tank probe drops below 5° C. A heat request is generated in this phase with
the ignition of the burner at minimum power, which is maintained until the
water temperature reaches 55° C. During the anti-frost cycle, the symbol
(g. 35) appears on the digital monitor.
Switching off for long periods
In case of absence for long periods of time, set the mode selector (g. 31) to
(OFF). Turn the main system switch OFF. Close the fuel and water taps
of the heating and domestic hot water system. In this case, anti-frost device
is deactivated: drain the systems, in case of risk of frost.
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