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2.5
D.h.w. temperature
The temperature of the d.h.w. can be adjusted
by acting on keys 11 (increase) and 12 (re-
duce) (Fig. 2.9) from a minimum of about 35°C
to a maximum of about 60°C. Press one of the
two keys once to display the "set" value. Press
again to access the modification.
Signal given by the LCD display:
• the "set" value of the d.h.w. and the
symbol flash. The background of the display
is illuminated. (Fig. 2.25).
Fig. 2.25
Adjustment
Adjust the d.h.w. temperature to a value suited
to your needs.
Reduce the necessity of mixing hot water with
cold water.
In this way, the automatic adjustment features
will be appreciated.
If water hardness is particularly high, we rec-
ommend that the boiler be adjusted to a tem-
perature less than 50°C.
In these cases we recommend however that a
softener is installed on the d.h.w. system.
If the maximum d.h.w. flow rate is too high,
such that does not allow the sufficient tem-
perature to be reached, have a suitable flow
rate limiter installed by the Authorised Service
Engineer.
D.h.w. request
When the boiler has a power request in the
d.h.w. mode, the
the display followed by an increase of the
heating water flow temperature. The
INSTRUCTIONS FOR USE
symbol is displayed on
symbol flashes (Fig. 2.26).
Fig. 2.26
2.6
3 star preheating function
This function diminishes consumption of the
domestic water supply at the time of withdraw-
al, preparing the boiler temperature at the re-
quested temperature.
To activate the 3 star preheating function press
key 13 (Fig. 2.33) until the following symbol
appears on the LCD display
When the symbol
in process.
Fig. 2.27
NOTE: Should the power to the boiler fail, wait
at least one minute before reactivating the
function upon reactivation.
To disable the 3 star preheating function press
key 13 (Fig. 2.33) until the symbol does not
disappear from the LCD display
Note to the installer
3 Star D.H.W. comfort setting
This boiler is equipped with advanced soft-
ware that facilitates an enhanced domestic
hot water delivery system; this system reduc-
es the waiting time at the hot water draw off
points to a minimum and also ensures limited
water wastage.
Please ensure if you decide to activate the
(Fig. 2.27).
flashes, the function is
.
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