Beretta CIAO AT Installer And User Manual page 13

USER GUIDE
Depending on the type of application, some of the functions described in this manual might not be available.
5 CONTROL PANEL (see "3.14 Control panel")
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6 COMMISSIONING
- Position the system's master switch to the "on" position.
- Open the gas tap to allow fuel to fl ow.
6.1 Ignition
To start up the boiler, proceed as follows:
- power the boiler
- open the gas tap to allow fuel fl ow
- adjust the room thermostat to the required temperature (~20°C).
After ignition, the boiler is in standby mode until the burner ignites following a demand for
heat. Burner ignition is indicated by the
The level bar indicates whether the boiler is operating with a modulation range of 0 to 50%
= or 51% to 100% = .
The boiler continues to function until the temperatures set on the boiler are reached, or the
heat request terminates; it will then go back to standby.
In the event of shutdown due to a fault, the digital display will show the relevant error code
and, in the case of a non-volatile error, the fl ame lockout symbol
6.2 Operating modes
- Repeatedly pressing the MODE button displays in sequence the possible operating
modes:
- OFF ● WINTER ● SUMMER ● CH ONLY (DO NOT SET THIS CONFIGURATION)
OFF
RESET
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MODE
symbol on the display.
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WINTER SUMMER
MODE MODE
MODE MODE
Winter: press MODE until you see
CH. The digital display indicates the CH water temperature.
Summer: press MODE until you see
digital display normally indicates the outlet temperature, and in the event of DHW demand
the temperature of the DHW.
OFF: to switch off the boiler press the MODE button until you see OF on the display. For
further details see "4.6 Temporary switch-off".
- Adjusting the CH water temperature
To adjust the CH water temperature, press the CH+ button to increase the value, CH- to
decrease it, within the CH setpoint limits (30°C - 80°C).
During a CH demand the symbol fl ashes on the display until the demand is met.
- Adjusting the domestic hot water temperature
To adjust the DHW temperature, press the DHW+ button to increase the value, DHW- to
decrease it, within the DHW setpoint limits (35°C - 60°C).
During a DHW demand the symbol fl ashes on the display, alternating with the letters
SA, until the demand is met.
. The boiler is ready to supply both DHW and
. The boiler supplies only domestic hot water. The
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ENGLISH
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