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CIAO GREEN R.S.I.

Suction pipe length (m)

Discharge pipe length (m)

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 three LEDs light up alternately and 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).

Live electrical parts (230 V AC).

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 and the boiler status indica-
tor LED lights up with a

xed green light. The digital monitor indicates 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 and the
boiler status indicator LED lights up with a

xed green light.

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 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 con

guration” 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 (Fig. 12.6) 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 and the
boiler status indicator LED lights up with a

xed green light. The digital di-

splay 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-but
with the symbol

(

g. 32) clockwise to increase water temperature and

anti-clockwise to lower it.
On the control panel, the green LED

ashes with ON for 0.5 seconds, OFF

for 3.5 seconds.
The boiler is standby status until, after a heat request, the burner switch-
es on and the indicator LED turns

xed green to indicate

ame presence.

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.
If the red LED indicator near the

symbol (

g. 33) on the control panel

lights up, this means the boiler is in temporary shutdown status (see the
chapter on Light signals and faults).
The digital monitor indicates the fault code detected.

Automatic Temperature Control System function (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 (frequency 0.1 sec. on; then 0.1 sec. off; for 0.5 seconds): ac-
cording 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. On the control panel, the green LED

ashes ON for 0.5 seconds,

OFF for 3.5 seconds.

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, checking that
the red indicator light is OFF.
At this point the boiler will automatically start and the red lamp switches on
in green.

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 (

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.