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6720856748 (2016/03) CR50
8 | Main menu
Switching the key block on/off
Press and hold the selector and auto key simultaneously for
a few seconds until Key lock appears.
If a control element is actuated while key block is active,Key
lock appears in the text line.
Remove key block: Press and hold the selector and auto
key simultaneously for a few seconds until Key lock
disappears.
5 Main menu
For an overview of the main menu, see the end of this
document.
5.1 Heating menu
Time program settings
Heating > Time program menu
Table 3
Resetting the time program to the factory settings
Heating > Reset Sched. menu
Table 4
5.2 DHW menu
When the thermal disinfection function is activated, the DHW
cylinder is heated to the temperature. The higher temperature
hot water can be used for thermal disinfection of the hot water
system.
Bear in mind the requirements from the DVGW – Code of
Practice W 511, operating conditions for the recirculation
pump, including the water quality and instructions of the
heat source.
Table 5
Menu item Description
Mon-Fri It is possible to set 6 switching times for each
day (3 switching times for heat begin and
3 switching times for setback begin). The
minimum duration of a heating phase is
30 minutes.
The default settings are:
Mon-Fri Heat begin1: 06:00 to Strt
setback1: 23:00
Saturday and Sunday: Heat begin1: 08:00
to Strt setback1: 23:00
This means that you are heating from 23:00 in
the evening until 06:00 on the following day to
the setback temperature only (Saturday and
Sunday until 08:00).
Saturday
Sunday
Monday
Tuesday
Wednesday
Thursday
Friday
Menu item Description
Reset
Sched.
With the aid of the YES setting, an individual
time program can be reset to the factory
settings.
0010006027-001
Key lock
Key lock
Menu item Description
Loading once If once-only cylinder charging is activated
(ON), water heating or temperature
maintenance is active immediately.
Temperature The hot water temperature can only be set
using the remote control if the water heating
is set to automatic mode on the heat source.
Mode The automatic mode for water heating is
active when AUTO appears in the value
display. The time program for heating also
specifies the switching times for water
heating. Continuous water heating or
temperature maintenance is active when ON
appears in the value display. When OFF is in
the value display, the water is not heated or
kept hot.
Recirculation Circulation makes hot water available
immediately at the hot draw-off points.
If ON is set, hot water is pumped through
the DHW circulation line briefly once or
several times per hour.
If AUTO is set, hot water is pumped
through the circulation line briefly at the
times water heating is active.
Set OFF to save energy.
Disinfection Thermal disinfection safeguards the hygienic
quality of the hot water. If AUTO is set, the hot
water is heated to 70 °C once every Tuesday
starting at 2:00 (at night).
8


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