AC•THOR
®
/ AC•THOR
®
9s Operating instructions, version a0020000 16
If the cut out temperature of an immersion heating element with a bimetal thermostat is set
too low, the AC•THOR may possibly be unable to reach the desired temperature!
If the optional automatic temperature boost backup with relay output has been selected, a minimum
temperature can then be set (factory setting 50 °C). It cannot be set higher than the maximum
temperature.
Relay output:
The AC•THOR can also maintain the minimum temperature at the my-PV temperature sensor by
enabling the heat-pump.
Hot water 1 min switching times
This setting can be selected when the relay output is selected under "Hot water 1 temperatures".
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 start-hour and stop-hour are identical, boost-backup starts one-time until the set-point
temperature is reached.
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 relay output is selected under "Hot water 1 temperatures".
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".
This enables the heat-pump and the immersion heating element remains in "excess" operation.
Relay thresholds
As switching threshold for a heat-pump, any output between 0 and 9,999 W can be set. Factory
setting is 500 W. An alteration to this output threshold only becomes effective after the end of the
current control cycle or after the AC•THOR is restarted.
Optionally, simultaneous control of the AC•THOR load output can be deactivated on the right of the
screen.
Relay delay
A period in minutes is laid down (t P>), during which the switching threshold above must at least be
exceeded before the heat-pump is enabled. The factory setting suggests 15 minutes. After this, a
minimum operating period (t run) and a minimum pause duration (t wait) can be set for the heat-
pump. Factory settings suggest 30 minutes for both these values
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