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71.07144.01 - EN
INSTRUCTIONS FOR USERS
Press this button to set the following boiler operating modes:
• SUMMER
• WINTER
• HEATING ONLY
• OFF
In SUMMER mode, the display shows ( ). The boiler satises requests for DHW only while central heating is NOT ena-
bled (ambient frost protection function active).
In WINTER mode, the display shows ( and ). The boiler satises requests for both DHW and central heating (am-
bient frost protection function active).
In HEATING ONLY mode, the display shows ( ). The boiler satises requests for central heating only (ambient frost
protection function active).
In OFF mode, the display shows neither of the above two symbols ( ) ( ). In this mode only the ambient frost pro-
tection function is enabled, any other request for DHW or heating is not satised.
5. DESCRIPTION OF BUTTON (Summer - Winter - Heating Only - Off)
6. FILLING THE SYSTEM
The boiler is tted with a hydraulic pressure gauge which prevents the boiler from working if there is no water.
NOTE
: In case pressure drops occur frequently, have the boiler checked by an authorised Service Engineer.
WARNING
Disconnect the boiler from the mains power
supply using the two-pole switch.
IMPORTANT: Regularly check that the
pressure displayed on the pressure gauge
is 0.7 - 1.5 bar, with the boiler cold. In case
of overpressure, open the boiler drain tap.
In case of insufcient temperature, open the
boiler lling tap (gure 3).
Open the tap very slowly in order to vent
the air.
Figure 2
CG_2115 / 0902_0603
A - system lling tap
B - system drain tap
24 F - 24
To switch off the boiler, disconnect the electric power supply.
In OFF mode (section 5) the boiler remains off (the display indicates OFF) but the electrical circuits remain live and the frost
protection device is enabled (section 9).
7. TURNING OFF THE BOILER
8. GAS CONVERSION
The boilers can operate both on natural gas and LPG.
All gas conversions must be made by an authorised Service Engineer.
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