10
2.6 Operating The Boiler
• Open the gas isolation valve located under the boiler.
• Switch on the boiler by placing the ON/OFF switch (1) in the ON position (see “Control panel”).
• The boiler will light automatically (with the WINTER mode selected and room thermostat connected).
• Check that there are no
fl
ashing numbers on the dispay 3 (see error codes). If code H20 appears on the
display 8 this denotes that there is no water in the boiler. Consequently,
fi
ll the system as described in
section “Fiiling the system”.
•
“SUMMER” mode
To switch bailer operation to “SUMMER” mode, press button 6 (see
fi
g. 1). The boiler will only work for the
D.H.W system. The “SUMMER” mode setting of hee boiler is signalled by the symbol
lit continuously on
the control panel.
The automatic ignitioi system will light the burner every time there is a demand for domestic hot water.
İ
n this
case, the symbol
on the control panel will
fl
ash.
•
“WINTER” mode
To switch boiler operation to “WINTER” mode, press button 6 (see
fi
g. 1). The boiler will only work for the
central heating system.The “WINTER” mode setting of the boiler is signalled by the symbol
lit continu-
ously on the control panel.
The automatic ignition system will light the burner every time there is a demand for room heating. In this case,
the symbol
on the control panel will
fl
ash.
•
“SUMMER-WINTER” mode
To switch boiler operation to “SUMMER / WINTER” mode, press button 6 (See
fi
g. 1). The boiler will work for
both central heating/ D.H.W systems. The “SUMMER-WINTER”
mode setting of the boiler is signalled by the
symbol
lit continuously on the control panel.
The automatic ignition system will light the burner every time there is a demand for room heating or domestic
hot water, the functioning is signalled by the symbols
fl
ashing continuously on the control panel.
Regulating the heating temperature
The heating temperature is regulated by knob
2
(see
fi
g 1).
• Rotating the knob anticlockwise reduces the temperature.
• Rotating the knob clockwise increases the temperature.
• The range of temperature setting for the central heating runs from a minimum of 30
o
C to a maximum of
80
o
C,or in the case of low temperature operation, from a minimum of 25
o
C to a maximum of 40
o
C.
D.H.W temperature control
The domestic hot water temperature is regulated by
knob 3 (see “Control panel”).
●
Rotating the knob anticlockwise reduces the tem-
perature.
●
Rotating the knob clockwise increases the tempera-
ture.
●
The range of temperature settings for the domestic
hot water runs from a minimum of 35°C to a maxi-
mum of 60°C.
Filling the System With Water
The water pressure in the central heating circuit must
be checked during the entire period of operation of the
M
R
Fig. 1
Fig. 2
boiler. In this respect, the reading on the pressure gauge
M
(
fi
g. 2), located on the lower part of the boiler,
must not be less than 1 bar.
If there is insuf
fi
cient water in the boiler, the code
H2O
will
fl
ash on the display (see
fi
g. 1).
