5
4. Commissioning of the
boiler
To have access to the control system of the boiler, open the transparent
panel which covers the control panel. The panel rotates down.
To open the upper door of the boiler pull on its upper corners so that the
door will be released from the outer casing.
To correctly light the boiler proceed as follows:
• Provide power supply to the boiler;
• Open the gas cock;
• Verify that the system is full of water and the pressure is the right one
(see point 7);
• Turn the selector switch (ref. 1 fi gure 1) to set the boiler on
winter
operation.
• Regulate the room thermostat (if present) at the desired temperatu-
re.
• Set the Central Heating regulation knob (ref. 2 fi gure 1) in order to
have the boiler at the desired temperature.
For a better energy saving we suggest you to set the regulation knobs in
the “COMFORT” position, environment conditions permitting.
Important:
when selector is set to
Winter (ref. 1 fi gure 1) you have
to wait few minutes every time the heating regulation device switches
off the burner (ref. 2 fi gure 2). If you want the burner to switch on im-
mediately, turn the selector in position (O) and then switch it again, in
winter position.
Warning
: During fi rst commissioning, until the air inside the gas pipes
is not released, the burner may fail to light immediately and this may
cause a blockage of the boiler. Under such conditions we recommend
you to repeat the ignition procedure until gas is delivered to the burner,
briefl y setting knob (1) to
position (ref. 1 fi gure 1).
4.1 Operation with Water Storage Tank Unit
The boiler water adjustment knob (Ref. 3 Figure 1) is only active when
there is a Tank unit. In this case it is possible to adjust the domestic
hot water temperature by turning the knob onto the required hot water
setting.
With the summer/winter selector set to winter mode
, when the
water of the tank has reached the selected temperature, the boiler works
automatically for the heating system (priority is given to the domestic
hot water supply).
It is possible to exclude the sanitary mode just setting the knob (ref. 3
fi gure 1) to the minimum value, that corresponds to the anti-frost function
of the tank.
With the summer/winter selector set to summer mode
, the burner is
alight and the tank’s pump works only when the temperature of the water
inside the tank is less than the value set with the DHW knob.
Picture 1: control panel of the boiler
Key:
1. Summer-Winter-Reset selector
2. Central Heating water regulation knob
3. DHW water regulation knob
4. Voltage presence indicator
5. DHW production mode indicator
6. Central heating mode indicator
7. Flame presence indicator
8. Gas block indicator
9. Overheating indicator
10. Blocked fl ue pressostat indicator
11. Blocked pressostat indicator (option)
12. DHW probe failure indicator options
13. Central heating probe failure indicator
14. Place for programming timer
8-9-10-11-12-13
Central heating thermometer
The domestic hot water function is only active
with the boiler unit
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