TIP for AC•THOR (not AC•THOR 9s):
If as an external heat source a second immersion heating element (maximum 3 kW)
is used, it can be suitably connected up for 6 kW operation. This differs from the 6
kW operating mode in that here the second immersion heating element is only used
for temperature boost backup and not as an extension to the normal control range!
Hot water 1 min switching times
This setting can be selected when the temperature boost backup is "On" under "Hot water 1
temperatures", or when the relay output has been selected.
There are two time windows available to maintain the minimum temperature on the my-PV
temperature sensor. Start and finish can each be defined at full hours. Factory settings suggest
switching times of 5 to 11 pm and 5 to 7 am.
Start hour and stop hour refer to the same calendar day. If a time window is defined over
midnight, hot water backup will not start!
If the adjusted start-hour is after the stop-hour, hot water backup will not start!
Hot water 1 min weekdays
This setting can be selected when the temperature boost backup is "On" under "Hot water 1
temperatures", or when the relay output has been selected.
You can select the weekdays on which the minimum temperature has to be maintained. In the
factory settings, all weekdays are activated.
Legionella program
For ensuring drinking water hygiene, a period can be specified by the end of which a set minimum
temperature must again be reached after the last time it was reached. The number of days in this
period can be set between 1 and 14. A time at which the legionella program is to start can also be
specified. Factory settings are number of days 7, starting time 8 pm, temperature is 60 °C, the
legionella program is "Off".
The immersion heating element is supplied with maximum power.
Load priority (only with AC•THOR 9s)
Defines the sequence in which the three load outputs are controlled.
Out 1-2-3: Standard, for a three-phase immersion heater.
Out 3-2-1: For stratified charging with three single-phase immersion heater.
For Out 3-2-1, it is essential to observe the order of the load outputs according to the wiring
diagram!
Boost output (only with AC•THOR 9s)
If boost backup is activated for AC•THOR 9s, it is possible to specify which load outputs are to be
used for this purpose. All three outputs are activated at the factory.
TIP: If, for example, 3 single-phase heating elements are used, it may only be
necessary to use the boost function on the top heating element. This keeps storage
capacities free for excess energy, which can significantly improve the degree of self-
sufficiency!
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