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Service info
Reset push button
In order to restart the boiler
when the lockout symbol is
displayed, it will be necessary to
push this button.
Chimney sweeper button
This push button, depressed for
3 seconds, activates the
chimney sweeper function: the
boiler will be forced to operate at
the maximum (or minimum)
capacity, in order to allow the
gas valve adjustment and the
smoke analysis.
When this function is activated,
by pushing this button once, the
boiler will operate at maximum
capacity. The radiator symbol will
be blinking, while the flame
symbol will be permanently
lighted.
By pushing again the button
(when the boiler is set to the
maximum capacity), the boiler will
operate at minimum capacity. The
radiator and the flame symbols,
both, will be blinking.
In order to clear this function
switch OFF and ON the boiler; if
not, the boiler will revert to nor-
mal operation after 15 minutes.
3.2 SWITCHING
ON / OFF
For the operation of the boiler in WINTER
mode, the knob “B” pointer must be positio-
ned in the grey range indicated by the arrow
on the figure shown above. The limit of the
arrow corresponds to the minimum and
maximum temperature values of 45°C and
78°C.
Note: If a room thermostat is fitted, set it
to the desired temperature.
SWITCHING ON
D.H.W. temperature adjust-
ment range for the models:
EVE 05 CTN/CTFS
C
B
B
SWITCHING OFF
Put the “B” knob on the SUN position and the
“C” knob to the minimum.
Switch OFF the boiler by acting on the
external main switch, provided the antifrost
protection is not required; otherwise go to 3.3.
For the operation of the boiler in SUMMER
mode, only for domestic hot water production,
the knob ''B'' reference has to be positioned
on the SUN and the D.H.W. temperature
value has to be adjusted using the knob ''C''.
Shut OFF the gas cock upstream
the boiler in case a prolonged inac-
tivity period of the boiler is ex-
pected.
Burner in operation
This symbol indicates that the
burner is in operation, in CH or
DHW mode.
CH mode operation
This symbol is present if there is
a CH demand. If a contemporary
DHW drawing is done, this sym-
bol disappears.
DHW mode operation
This symbol is present if there is
a DHW drawing.
Lockout symbol
The function of this symbol is to
indicate the burner safety inter-
vention, due to:
- lack of gas
- not detected ignition
In the first case, no ignition oc-
curs: verify that the gas feeding
is present.
In the second case, check the
ignition electrode and the con-
nections to the main PCB.
°C
°C
CHIMNEY
SWEEPER AT
THE MAXIMUM
CAPACITY
CHIMNEY
SWEEPER AT
THE MINIMUM
CAPACITY
Failure symbol
The symbol is displayed when the
boiler detects an operation anomaly
or when the boiler is in lock-out for
a permanent failure. The code iden-
tifying the cause is displayed
instead of the boiler temperature by
pushing the reset push-button.
MAX
M
I
N
MAX
M
I
N
MAXMIN
34


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