for the user
SUMMER FUNCTIONING
Turn the selector [2] bringing it in the SUMMER
position
Regulate the DHW Thermostat
[4] in the position respective to the desired domestic hot water
temperature. The burner will turn on automatically when hot water is required. In case of not
ignition, check that the red lamp [7] is not on: if it’s on, turn the selector [2] in the central Off/
Unlock
Position, wait until the red lamp [7] turns off, and then bring it again in the SUMMER
position. See “Working and warning indicators” for more information and useful advices to solve
common problems.
WINTER FUNCTIONING
Turn the selector [2] bringing it in the WINTER
Position.
Regulate the Boiler Thermostat
[3] at the desired temperature.
If a Room thermostat or a Cronothermostat is installed, the regulation of this last keeps the room
temperature as that arranged (refer to the respective using instructions). In this case it is useful to
regulate the boiler thermostat
according to the outdoor seasonal climate, so as to allow the
gaining of the desired temperature, but without excessive overheatings (consider that the radiators
emit heat also after the turning off of the boiler).
Regulate the DHW Thermostat
[4] in the position respective to the desired domestic hot water
temperature. The burner will turn on automatically when it is requested. If after the request the
ignition does not take place, check that the red lamp [7] is not on: if it’s on, turn the selector [2] in
the central Off/Unlock Position, wait until the red lamp [7] turns off, and then bring it again in
the Winter Position. See “Working and warning indicators” for more information and useful
advices to solve common problems.
Important:
The temperature in the boiler is shown by the thermometer [5] and the pressure is shown by the
Gauge [6].
Remark: If pressure falls down to 0.5 bar, boiler will stop (the red lamp turns on). To reset the
system, proceed with system filling.
ROOM TEMPERATURE REGULATION
We want here to remind you that the room tempe-
rature must be regulated through a room
thermostat with two temperature levels. This
required by DPR 26 Agosto 1993 n°412 and
relevant changes.
SYSTEM FILLING
Make sure that the system pressure in a cold state is
always between 0.5÷1.5 bar (optimal pressure: 1÷1.5
bar). If pressure is lower, open the filling valve (see
figure) till it reaches a maximum value of 1,5 bar; this
value is checked with the pressure gauge (item 6 in
previous Control Panel figure).
BOILER BOTTOM VIEW
FILLING
VALVE
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