6 x Operation
89
FA ROTEX HeatPumpSolarUnit - Part 2 - 05/2009
[2] - Legionella protection
If no hot water is used for several days and the storage temperature of the ROTEX HeatPumpSolarUnit does not reach at least
60 °C, for hygiene reasons (Legionella protection) it is periodically heated up to above 60 °C once.
The following setting options are available:
– [2-00] Operating interval: day(s) of the week on which the "Legionella protection" function should be started.
– [2-01] Status: 0 = Function "Legionella protection" is switched off, 1 = Function "Legionella protection" is switched on.
– [2-02] Starting time: Starting time, the day on which the function "Legionella protection" is started.
– [2-03] Target value: Disinfection temperature to be reached.
– [2-04] Holding time: Length of time for which the disinfection temperature should be maintained.
[3] - Automatic Restart
Once the power is restored after a power cut, the function "Automatic Restart" applies the settings that were on the user
interface when the power was disrupted.
When the power supply to the ROTEX HeatPumpSolarUnit is restored after a power cut, if the function "Automatic Restart"
is deactivated, the program clock is not switched on. You must restart the program clock manually by pressing the
key once.
Therefore we recommend leaving the function "Automatic Restart" activated.
The following setting options are available:
– [3-00] Status:
0 = Function "Automatic Restart" is switched off,
1 = Function "Automatic Restart" is switched on.
[4] - Operating the reserve heating and switch-off temperature of room heating
The Backup Heater (BH) in the Indoor Module (RKHB) can be fully switched on or off or its operation switched off depending on
the operation of the Booster Heater (EHS).
The following parameters are available to be set:
– [4-00] Status: 0 = Backup Heater (BH) is switched off, 1 = Backup Heater (BH) is switched on.
– [4-01] Priority:
0 = Backup Heater (BH) and Booster Heater (EHS) can be operated simultaneously
1 = Booster Heater (EHS) has priority over the internal Backup Heater (BH).
– [4-02] Switching off room heating in the summer: Outside temperature (outdoors), at which the room heating is switched off
so that the rooms are not overheated.
WARNING!
The settings of the function "Legionella protection" must always be configured in accordance with the country-
specific laws.
tTime
T
DHW
Hot water temperature
T
H
Disinfection temperature [2-03]
T
U
Target temperature for hot water (as set on user interface
on Page 78)
Fig.6-12 View of the control system with active "Legionella protection"
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