- 20 -
USE
INSTRUCTIONS FOR USE
Fig. 2.19
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 fea-
tures will be appreciated.
If water hardness is particularly high, we
recommend that the boiler be adjusted to a
temperature 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 Serv-
ice Engineer.
D.h.w. request
When the boiler has a power request in the
d.h.w. mode, the
symbol is displayed on
the display followed by an increase of the
heating water flow temperature. The
symbol flashes (Fig. 2.20).
Fig. 2.20
2.6 3 star preheating function
This function diminishes consumption of the
domestic water supply at the time of with-
drawal, preparing the boiler temperature at
the requested temperature.
To activate the 3 star preheating function
press key 13 (Fig. 2.27) until the following
symbol appears on the LCD display
(Fig. 2.21).
When the symbol
flashes, the function
is in process.
Fig. 2.21
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. 2.27) until the symbol
does not disappear from the LCD display
.
Note to the installer.
3 Star DHW comfort setting
This boiler is equipped with advanced soft-
ware that facilitates an enhanced domestic
hot water delivery system; this system re-
duces 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
built in 3 star comfort function that the first
DHW draw off point is at a sufficient dis-
tance to avoid excessively hot water being
delivered to the draw off point.
Setting the 3 star preheating function
time brackets
For preheating, the scheduling will be the
same for all days.
Enter ”programming mode” by holding down
Summary of Contents for Activ A 30C
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