6720856749 (2016/03)CR50
Service menu | 7
Table 3 Settings in the system data menu
6.2 Heating circuit menu
Settings for the heating zone are made in this menu.
NOTICE:
Risk of damaging or destroying the screed!
▶ If an underfloor heating system is installed, observe the
maximum flow temperature recommended by the
manufacturer.
Table 4 Settings in the heating zone menu
Frost protection
The setting by room temp offers sufficient frost protection
only if all the piping in the insulated building envelope is run in
the “warm area” (no reliable frost protection if the piping is run
in façades, for example).
6.3 DHW menu
Settings for water heating are made in this menu. A contractor
can set a hot water temperature higher than 60 °C. Only
available with EMS 2-BUS.
WARNING:
Risk of scalding from hot water!
If thermal disinfection has been set to avoid legionella (the
DHW is heated once Thursday night at 02:00 to 70 °C), or the
maximum storage temperature has been set to above 60 °C:
▶ Inform all people concerned and make sure that a mixer is
installed.
Table 5 Settings in the hot water menu
6.4 Function test menu
The system pump can be tested using this menu.
Table 6 Settings in the function test menu
6.5 Info menu
Heating system settings and measurements are displayed in
this menu. Changes are not possible.
Recirculation NO: The DHW circulation pump cannot be
controlled by the heat source.
YES: The DHW circulation pump can be
controlled by the heat source.
Reset all NO: The current settings have been
retained.
YES: The factory settings are being restored
(except time and date).
Menu item Control range: Function description
Max. Suppl.T. 30 ... 48 ... 60 °C (example of underfloor
heating system): Maximum flow temperature
PID charact. Fast: Fast control characteristic, such as
when there is a small heating water quantity
in the air heating
Medium: Medium control characteristics, for
example with radiator heating
Slow: Slow control characteristics, for
example with underfloor heating system
Opt. pump run ON: The heating pump runs as little as
possible on the basis of the flow temperature
OFF If the system has more than one heat
source installed or a buffer cylinder is
installed, this function must be deactivated.
Frost protect
(only available
with 2-wire
BUS/EMS 2-
BUS)
OFF: Frost protection off
by room temp: Frost protection is
deactivated/activated on the basis of the
temperature selected here
DHW priority ON: DHW heating is activated, the heating is
interrupted
OFF: DHW heating is activated, parallel
operation with heating
Menu item Control range: Function description
Menu item Control range: Function description
Max. DHW
temp
60 ... 80 °C: The set value is the upper limit for
the desired hot water temperature
Menu item Control range: Function description
Activation NO: All actuators return to the same position
as before activating the test.
YES: All actuators in the system switch to the
test mode.
System pump 0 (in %): Heating pump not running (switched
off).
100 (in %): Heating pump running at
maximum speed.
Menu item Possible values: Description
Appl. oper. ON: Burner in operation
Off: Burner not operating
Appl.set flow 20 ... 90 °C: Flow temperature required at
the heat source (set temperature)
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