MYPV AC THOR User manual

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 1
AC•THOR / AC•THOR 9s
Photovoltaic-Power-Manager for hot water and space heating
Operation Manual
Firmware a0020000
Operating modes
AC•THOR
AC•THOR 9s
M1 Hot water
M2 Hot water stratified charging
M3 Hot water 6kW
M4 Hot water + heat pump
M5 Hot water + space heating
M6 Space heating
M7 Hot water + PWM
M8 Frequency mode

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 2
Contents
1. Assembly .............................................................................................................................. 3
2. Commissioning; putting back into service................................................................................ 3
3. Controls and displays............................................................................................................. 4
Homescreen.......................................................................................................................... 4
Status symbol .................................................................................................................... 5
Data logger........................................................................................................................... 6
Status information on the display ........................................................................................... 6
Settings ................................................................................................................................ 7
Help ..................................................................................................................................... 8
4. Operating modes................................................................................................................... 8
M1: Hot water....................................................................................................................... 8
Explanation........................................................................................................................ 8
Specific settings for operating mode M1 .............................................................................. 9
Temperature sensors (only with AC•THOR 9s) ................................................................... 10
M2: Hot water stratified charging ......................................................................................... 11
Explanation...................................................................................................................... 11
Specific settings for operating mode M2 ............................................................................ 12
M3: Hot water 6 kW ............................................................................................................ 13
Explanation...................................................................................................................... 13
Specific settings for operating mode M3 ............................................................................ 14
M4: Hot water + Heat pump ................................................................................................ 14
Explanation...................................................................................................................... 15
Specific settings for operating mode M4 ............................................................................ 15
M5: Hot water + Space heating............................................................................................ 17
Explanation...................................................................................................................... 17
Specific settings for operating mode M5 ............................................................................ 18
Temperature sensors ....................................................................................................... 19
M6: Space heating............................................................................................................... 19
Explanation...................................................................................................................... 19
Specific settings for operating mode M6 ............................................................................ 20
Temperature sensors ....................................................................................................... 20
M7: Hot water + PWM......................................................................................................... 20
Explanation...................................................................................................................... 21
Specific settings for operating mode M7 ............................................................................ 21
M8: Frequency mode........................................................................................................... 22
Explanation...................................................................................................................... 22
Specific settings for operating mode M8 ............................................................................ 23
Temperature sensors (only with AC•THOR 9s) ................................................................... 25
5. General settings .................................................................................................................. 25
6. Web-Interface..................................................................................................................... 27
Search for devices in the network......................................................................................... 27
Systems without Internet access .......................................................................................... 28

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 3
Connect Web-Interface........................................................................................................ 29
Home (homepage) .............................................................................................................. 30
Data logger......................................................................................................................... 30
Status information............................................................................................................... 31
Settings .............................................................................................................................. 32
Special setting possibilities in the Web-Interface ................................................................... 32
Legionella boost outputs (only with AC•THOR 9s) .............................................................. 32
Control Settings ............................................................................................................... 33
Measurement Settings...................................................................................................... 36
E-Car-Function................................................................................................................. 36
Multi units ....................................................................................................................... 36
Cloud Mode ..................................................................................................................... 38
Debug-Mode.................................................................................................................... 40
Help ................................................................................................................................... 40
7. Potential-free input for external control ................................................................................ 40
8. Description of the protocols for http and Modbus TCP ........................................................... 41
9. Firmware update................................................................................................................. 41
Update of server ................................................................................................................. 41
Manual Update ................................................................................................................ 41
Update with SD card............................................................................................................ 42
10. Status codes ....................................................................................................................... 42
11. Temperature sensors: Assignment and function (only with AC•THOR 9s)................................ 42
12. Fault temperature sensors ................................................................................................... 42
13. Error messages on the Display ............................................................................................. 43
14. Fault signals by the AC•THOR Logo...................................................................................... 43
1. Assembly
Before placing into operation it is essential to read the assembly instructions provided with the
device.
2. Commissioning; putting back into service
This takes just a few moves and is performed the first time the AC•THOR is operated or when it has
been reset to factory settings.
1. Select language
Use the cursor keys on the left and right to view further possibilities.
2. Select operating mode
See chapter headed "Operating modes".
3. Select control of the signal source for the AC•THOR
a. Power meter automatic: Connection to my-PV power meter in the network is set up
automatically.
NOTE: setting up the connection may take up to a minute.
b. Power meter manual: Connection to my-PV power meter in the network is set up by
entering the IP address manually.

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 4
c. Power meter direct: Connection to my-PV power meter is set up without network
directly by using a crossover network cable.
d. List of possible compatibility partners:
For certain compatible partners the choice between „Auto“ (automatic IP-search of
the device) or „Manual“ (manual entry of the IP address of the source) is possible.
„Manual“ is for instance necessary when there are several compatible sources in the
network and a special one of them should be chosen as the control system.
TIP: On the Web-Interface the selection of compatible
signal sources is much larger than on the display!
e. Further protocols: http, Modbus TCP, Adjustable Modbus TCP
Adjustable Modbus TCP has to be configured in the Web-Interface.
(see chapter „Special setting possibilities in the web interface”)
4. Temperature sensor assignment and activation
A number is assigned to the sensor in the order in which it is selected. The selection can
be deselected by tapping on the key once more.
To assign a sensor to the respective entry in the list, the serial numbers can be identified
on a label attached to the sensor wire.
TIP: As the measuring value of the sensor is already shown in the selection
list, an assignment can alternatively also be made by simply altering the
temperature on the sensor.
5. Save the settings
3. Controls and displays
Homescreen
The "Home" button always returns you to the home screen. The upper bar shows the current date,
time, the unit number und the operating mode (mode M1 –Mx). On the right, symbols show the
unit's current status.
The contents of the home screen vary according to the operating mode and shows how much power
the AC•THOR is currently feeding into the load. Depending on how many, if any, temperature
sensors are defined, the measured values are also shown.

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 5
Homescreen AC•THOR:
Presentation
according to operating
mode
Date, Device number
time Operating mode Status
Main menu
Single-Boost
Homescreen AC•THOR 9s:
With the AC•THOR 9s,
the power display
consists of three bars.
Load output Out-3
Load output Out-2
Load output Out-1
If several temperature
sensors are used, the
sensor number is
displayed.
The button "Single boost" only appears in hot water operating modes if the function for
ensuring a minimum temperature is activated. Actuating the button starts a once-only
boost backup mode. This can also be deactivated while it is in operation.
If the boost backup is actuated automatically based on the day of the week, time of day or
temperature, it cannot be deactivated by using the button.
Status symbol
Lights up = set temperature reached, Flashes = stand-by, waits for excess
Lights up = heats with PV excess. Flashes = boost backup mode
Lights up = no control signal
Lights up = physical connection to the RJ45 network connection is intact
Lights up = no intact physical connection to the RJ45 network connection
Block active

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 6
Data logger
Recorded production data, meter values and temperatures can be read off at any time. The
respective values can be selected using the "Open" button. These can be presented in the three
views of the current year, month or day using the "Calendar" button.
TIP: Type directly in the diagram on the individual bars to present the data in their
next level of definition and on the button of the data logger again to return to the
previous level.
The following data can be displayed:
Total power: Shows the total power figures for all the connected loads. The yellow bars indicate the
PV excess power used, the green bars the proportion of grid energy when the optional temperature
boost backup is active.
Meter: indicates the value of the total power drawn from the grid (red) including household loads
and grid feed-in (green) at the metering point.
Power 1: shows the power data for load 1.
Power 2: shows the power data for load 2.
Temperature 1-4: shows the data of the temperature probe.
Status information on the display
The data of all variables relevant to the operation are shown in a list.
Output: shows the current output of the AC•THOR power unit.
Meter: shows the current data for the meter at the measuring point. A positive value shows drawing
from the grid, a negative value, feeding into the grid.
PV: If a corresponding measuring point has been set in the Web-Interface under Setup, the value of
the PV power is available here. See Measurement Settings.
Load: shows the nominal power of the load (at 230 V) which is currently being supplied by the
AC•THOR output unit. This value can be determined from an output of 500 W.
With AC•THOR 9s, the load status (0 or 1) at the three outputs is displayed at this point.
Temperature 1: Current data probe 1
Temperature 2: Current data probe 2
Temperature 3: Current data probe 3
Temperature 4: Current data probe 4
IP: shows the current IP address of the AC•THOR.

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 7
Ctrl IP: shows the current IP address of the signal source. Shown in addition in the line below is the
designation of the signal source and the current measured value. A positive value shows drawing
from the grid, a negative value, feeding into the grid.
Status: Shows the unit's current status. See chapter "Status codes".
For AC•THOR 9s the number consists of two parts. On the left the status code of power unit
AC•THOR 9s, on the right the status code of power unit AC•THOR.
Grid voltage: shows the current input voltage at the AC•THOR (only with AC•THOR)
Grid power: shows the current input power at the am AC•THOR (only with AC•THOR)
Output voltage: shows the current output voltage of the AC•THOR (only with AC•THOR)
Power 1: Power at output Out-1 (only with AC•THOR 9s)
Power 2: Power at output Out-2 (only with AC•THOR 9s)
Power 3: Power at output Out-3 (only with AC•THOR 9s)
Frequency: shows the current grid frequency. This information is of particular interest in operating
mode M8.
Temperature output unit: shows the current temperature of the AC•THOR power electronics.
Fan: shows the current speed setting of the internal fan.
Serial number: shows the unit serial number.
MAC address: shows the MAC address of the unit.
Version: shows the current firmware version of the unit.
Version power stage: shows the current firmware version of the AC•THOR output unit.
For AC•THOR 9s the firmware version of the PS consists of two parts.
pXXX: Power stage AC•THOR
sXXX: Power stage AC•THOR 9s
Device number: shows the unit number set. This is also visible on the home screen.
Operating mode: shows the operating mode set (M1 –Mx). This is also visible on the home screen.
Latest firmware: shows the latest firmware version, or "current" is displayed.
Update status: Ok, loading (number of files), or waiting for installation
Output unit update status: Ok, loading, or waiting for installation
Ethernet (E) Firmware: Shows the status of the firmware, last version, update progress.
Power stage (P) Firmware: Shows the status of the firmware, last version, update progress.
Power stage 9s (S) Firmware: Shows the status of the firmware, last version, update progress.
Relay status: shows the current status of the switch output (0 or 1).
For AC•THOR 9s this number has four digits. The first digit shows the status of the switch output (0
or 1), the second digit whether Out-3 is switched (0 or 1), the third digit whether Out-2 is switched
(0 or 1) and the fourth digit shows the output that is currently supplied by the power stage (1, 2 or
3).
Settings
See chapter "General settings" for general unit settings, also chapter "Operating modes" for settings
specific to the respective operating mode.

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 8
Help
After activation, brief information on the current view appears on the display. In the web interface
the button leads to the online Operation Manual which corresponds to the firmware version installed.
4. Operating modes
You will find wiring diagrams for the respective operating modes and for wiring three-phase
heating elements in the assembly instructions supplied with the AC•THOR, as well as in the
latest version at any time on www.my-pv.com.
M1: Hot water
AC•THOR: Hot water with a single-phase immersion heater
AC•THOR 9s: Hot water with a three-phase immersion heater or with 3 single-phase immersion
heaters
TIP for AC•THOR:
A single-phase heating element does not necessarily have to have 3kW power. Of
course, smaller outputs such as 2kW are also possible!
TIP for AC•THOR 9s:
A three-phase heating element does not necessarily have to have 9kW power.
Smaller outputs such as 4.5kW, 6kW or 7.5kW are also possible!
Likewise, three single-phase elements can have a power of less than 3kW!
Explanation
In this operating mode, an electric heating element is supplied linearly with excess PV energy. It can
be fitted with a bimetal thermostat to switch off when the temperature for which it is set is reached.
Otherwise the my-PV temperature sensor is to be used.
With AC•THOR 9s in operation with three single-phase heating elements, bimetal thermostats
must be present on all three immersion heaters!
Optionally, the AC•THOR can also take over guaranteeing the hot water temperature. For this, the
my-PV temperature sensor is to be used.
The my-PV temperature sensor is in all cases to be installed in the storage tank above the
heating element to provide a reliable reading!

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 9
Data my-PV
temperature sensor
Current power output
Homescreen
Single-Boost
Starts a once-only boost
backup mode
(button only appears if boost
backup is activated)
TIP: With the hot water boost backup, limit the use of grid power by avoiding the
switch-off at maximum temperature. To do this, set the value higher than the cut
out temperature on the immersion heating element thermostat and site the
temperature sensor between the immersion heating element and the top edge of the
storage tank. In this way, in boost backup mode only the volume above the sensor
will be heated to the minimum temperature, while when there is excess PV, the
entire contents above the immersion heating element will be heated.
Specific settings for operating mode M1
Hot water 1 temperatures
Adjustable is the maximum permitted temperature to be reached at the my-PV temperature sensor
(factory setting = 60 °C). This has nothing to do with a bimetal thermostat which may be installed!
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 is shown "On" in the window on the right
(factory setting "Off") or the 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.
Automatic temperature boost backup "On":
The AC•THOR can ensure a minimum temperature at the my-PV temperature sensor through the
immersion heating element connected. This is supplied with maximum power.
Relay output:
Alternatively, the minimum temperature can be maintained by enabling an external heat source.
Enablement is by means of a potential-free contact. For details of wiring the potential-free contacts,
please refer to the assembly instructions in the chapter "Connections".
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.

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 10
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.
TIP: Restrict the times when the minimum temperature has to be maintained to
mornings and evenings, to increase your own PV consumption through the day!
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 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!
TIP: If not all three outputs of a three-phase heating element are used for boosting,
control power is still available in case of excess energy!
Temperature sensors (only with AC•THOR 9s)
Optionally, three temperature sensors can also be used in the operation of three single-phase
heating elements. The assignment must be made vice versa to the load outputs.

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 11
Note: One temperature sensor is always enclosed with the AC•THOR, other sensors must be
purchased separately.
Load output / heater
Sensor number
Out-3 / Top
1
Out-2 / Center
2
Out-1 / Bottom
3
Excess power control and boost backup are then carried out individually for each heating element;
the settings in " Hot water 1 temperatures" affect all three elements. If only one sensor is used, this
only switches off the upper heating element, the other heating elements must be controlled via
thermostats.
M2: Hot water stratified charging
AC•THOR: Hot water with two single-phase immersion heaters
AC•THOR 9s: Hot water with two three-phase immersion heaters
Explanation
In a water tank in this operating mode, two immersion heating elements are supplied successively
and linearly with excess PV power. The upper element has priority. The aim is to reach the desired
temperature at the tapping point as quickly as possible before further excess power heats up the
remaining contents of the tank.
As soon as the upper immersion heating element reaches the target temperature the lower heater
will be supplied. If no my-PV temperature sensor is used, the switch-over takes place via the
thermostats of the heating elements, the AC•THOR then regularly checks whether the upper heating
element is available again. If the my-PV temperature sensor is used, the changeover takes place
when the temperature at the sensor reaches the set maximum value.
Both heating elements must be equipped with a bimetal thermostat to switch off when the set
temperature is reached!
With AC•THOR, the switchover between the single-phase heating elements takes place directly via
the integrated relay (see wiring diagram). With the AC•THOR 9s, the relay operates a three-pole NC
contact and a three-pole NO contact (see wiring diagram), which then switch over the three-phase
heating elements.
TIP: It is also possible to control two immersion heating element s in separate tanks.
The "upper" heater would then for instance be located in a drinking water tank, the
"lower" heater in a buffer tank alongside it.
Optionally, the AC•THOR can also take over the boost backup of the hot water temperature at the
upper immersion heater. For this, the my-PV temperature sensor is to be used.
The my-PV temperature sensor must in any event be installed in the hot water tank above the
upper heater to provide a reliable reading!

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 12
Data my-PV
temperature sensor
Current power output
Homescreen
An arrow shows which
heater is currently being
supplied.
(upper or lower)
Single-Boost
Starts a once-only boost
backup mode
(button only appears if boost
backup is activated)
Specific settings for operating mode M2
Hot water 1 temperatures
Adjustable is the maximum permitted temperature to be reached at the my-PV temperature sensor
(factory setting = 60 °C). This has nothing to do with a bimetal thermostat which may be installed!
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 is shown "On" in the window on the right
(factory setting "Off"), a minimum temperature can then be set (factory setting 50 °C). It cannot be
set higher than the maximum temperature.
Automatic temperature boost backup "On":
The AC•THOR can ensure a minimum temperature at the my-PV temperature sensor with the upper
heater. This is supplied with maximum power.
Hot water 1 min switching times
This setting can be selected when the temperature boost backup is "On" 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.
TIP: Restrict the times when the minimum temperature has to be maintained to
mornings and evenings, to increase your own PV consumption through the day!
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 temperature boost backup is "On" under Hot water 1
temperatures".

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 13
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 upper immersion heating element is here supplied with maximum power.
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 not all three outputs of a three-phase heating element are used for boosting,
control power is still available in case of excess energy!
M3: Hot water 6 kW
AC•THOR: Hot water 6kW
AC•THOR 9s: 6kW control power is possible with operating mode M1
Explanation
In this operating mode, two heating elements each of 3 kW are supplied with excess PV power in a
water storage tank. One of them be regulated continuously variable, the other cuts in as soon as
more than 3 kW excess PV is available. When this occurs, the first heater starts again from 0 with
the power regulation. Thus taken together, a control range from 0 to 6 kW is available.
Both heaters can be fitted with a bimetal thermostat to cut out when the set temperature is
reached. Otherwise the my-PV temperature sensor is to be used.
Optionally, the AC•THOR can also take over boost backup of the hot water temperature with both
immersion heating element s. For this, the my-PV temperature sensor is to be used.
The my-PV temperature sensor must in any event be installed in the hot water tank above the
upper heater to provide a reliable reading!
Data my-PV
temperature sensor
Current power output
Homescreen
Single-Boost
Starts a once-only boost
backup mode
(button only appears if boost
backup is activated)

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 14
Specific settings for operating mode M3
Hot water 1 temperatures
Adjustable is the maximum permitted temperature to be reached at the my-PV temperature sensor
(factory setting = 60 °C). This has nothing to do with a bimetal thermostat which may be installed!
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 is shown "On" in the window on the right
(factory setting "Off"), a minimum temperature can then be set (factory setting 50 °C). It cannot be
set higher than the maximum temperature.
Automatic temperature boost backup "On":
With both immersion heaters, the AC•THOR can assure a minimum temperature at the my-PV
temperature sensor. These are supplied with maximum power.
Hot water 1 min switching times
This setting can be selected when the temperature boost backup is "On" 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.
TIP: Restrict the times when the minimum temperature has to be maintained to
mornings and evenings, to increase your own PV consumption through the day!
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 temperature boost backup is "On" 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".
The immersion heaters are supplied with maximum power.
M4: Hot water + Heat pump
AC•THOR: Hot water with a single-phase immersion heater
AC•THOR 9s: Hot water with a three-phase immersion heater

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 15
This mode works in systems where the AC•THOR knows the power in the feed-in point. It
does not work if the power output is given by a higher-level energy management system.
Explanation
In this operating mode the electric immersion heating element of a heat pump is linearly supplied
with excess PV power. This can be equipped with a bimetal thermostat to switch off when the set
temperature is reached. Otherwise the my-PV temperature sensor must be used.
The my-PV temperature sensor must in any event be installed in the hot water tank above the
upper heater to provide a reliable reading!
On exceeding a given excess power threshold, operation of the heating pump will be enabled. This
threshold can be set. Similarly a minimum time for which this threshold must be exceeded. At the
same time as the heat-pump is working, the additional excess power can be passed by the AC•THOR
to the immersion heating element . This is activated in the factory settings.
After the defined excess power threshold has been exceeded for a specified time (t P>), the heat-
pump starts for the minimum operating time (t run). This may also result in power being drawn from
the grid!
When the minimum operating time has expired, the heat-pump remains enabled, provided there is
still excess PV power available and the target temperature at the my-PV temperature sensor is not
yet reached. If this now causes a fall in the excess PV power, the heat-pump will only be disabled
after 60 seconds.
Once the heat-pump is disabled, it will not be reactivated for a period which can be set (t wait).
Optionally, the AC•THOR can also take over guaranteeing the hot water temperature. This is carried
out by enabling the heat-pump, when the immersion heating element will continue to be linearly
supplied with excess.
The target temperature of the heat-pump control is not to be set lower than the AC•THOR
minimum temperature, as this could then no longer be guaranteed!
Data my-PV
temperature sensor
Current power output
Homescreen
Time period and time
counter value of the HP
control
Single-Boost
Starts a once-only boost
backup mode
(Button appears only when
the relay output is activated)
Specific settings for operating mode M4
Hot water 1 temperatures
Adjustable is the maximum permitted temperature to be reached at the my-PV temperature sensor
(factory setting = 60 °C). This has nothing to do with a bimetal thermostat which may be installed!

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.
TIP: Restrict the times when the minimum temperature has to be maintained to
mornings and evenings, to increase your own PV consumption through the day!
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

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 17
M5: Hot water + Space heating
AC•THOR: Hot water + one heating zone
AC•THOR 9s: Hot water + two heating zones
Explanation
This operating mode is intended for buildings with hot water and space heating by electricity.
Electrical heat sources are supplied with PV surplus one after the other linearly with power. The
immersion heating element for the hot water supply takes priority. As soon as the hot water target
temperature at the respective my-PV temperature sensor is reached, next the electric space heating
is supplied until here too the target value at the my-PV temperature sensor is reached.
Optionally, the AC•THOR can also take over guaranteeing the hot water temperature.
Two my-PV temperature sensors are required for AC•THOR!
Three my-PV temperature sensors are required for AC•THOR 9s!
Note: One temperature sensor is always included with the AC•THOR, other sensors must be
purchased separately.
The first my-PV temperature sensor is in any case to be sited over the heater in the hot water
tank to provide a reliable reading!
For controlling the space heating, the respective my-PV temperature sensor is to be installed
in a suitable place to provide a reliable reading!
With electric underfloor heating for instance in a probe-tube in the floor.
If measuring the air in the room, avoid direct sunlight.
TIP: When specifying room temperatures, to avoid using power from the public grid
the minimum values for day and night should be set correspondingly low. See
explanation "SH 1 temperatures".
Data my-PV
temperature sensors
Water temperature
Room temperature 2
Room temperature 1
(sun = daytime
operation)
Current power
output
Homescreen
Single-Boost
Starts a once-only hot water
boost backup
(button only appears if boost
backup is activated)
On the display a sun or moon symbol shows which time period is currently controlling the room
temperature. Different minimum temperatures can be specified for day and night.

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 18
Specific settings for operating mode M5
Hot water 1 temperatures
The maximum temperature permitted to be reached at my-PV temperature sensor 1 can be adjusted
(factory setting 60 °C). This has nothing to do with a bimetal thermostat which may be installed!
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 is shown "On" in the window on the right
(factory setting "Off"), a minimum temperature can then be set (factory setting 50 °C). It cannot be
set higher than the maximum temperature.
Automatic temperature boost backup "On":
The AC•THOR can ensure a minimum temperature at the my-PV temperature sensor through the
immersion heating element connected. This is supplied with maximum power.
Hot water 1 min switching times
This setting can be selected when the temperature boost backup is "On" 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.
TIP: Restrict the times when the minimum temperature has to be maintained to
mornings and evenings, to increase your own PV consumption through the day!
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 temperature boost backup is "On" 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".
The immersion heating element is supplied with maximum power.
SH 1 temperatures (with AC•THOR 9s SH 1 und SH 2)
The maximum room temperature permitted to be reached at my-PV temperature sensor 2 or 3
(sensor 1 is for hot water) can be adjusted (factory setting 22 °C), as are the minimum

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 19
temperatures which should be maintained in the day and night periods (factory setting 20 °C in each
case).
SH 1 Switching times (with AC•THOR 9s SH 1 und SH 2)
Start and finish of the night period can both be adjusted with hours and minutes. The factory setting
suggests the period between 10 pm and 5 am. This setting can be selected as desired for all days of
the week with corresponding selection of the button alongside the time (MON-SUN, MON-FRI, SAT-
SUN).
Temperature sensors
Sensor assignment AC•THOR:
Application
Sensor number
Hot water
1
Space heating
2
Sensor assignment AC•THOR 9s:
Excess power control and boost backup are then carried out individually for each load output.
Load output / Application
Sensor numb
Out-3 / Hot water
1
Out-2 / Space heating 2
3
Out-1 / Space heating 1
2
M6: Space heating
AC•THOR: One heating zone
AC•THOR 9s: Three heating zones
Explanation
In this operating mode an electric space heating is supplied linearly with excess PV power.
One my-PV temperature sensors are required for AC•THOR!
Three my-PV temperature sensors are required for AC•THOR 9s!
Note: One temperature sensor is always included with the AC•THOR, other sensors must be
purchased separately.
To control the space heating, the respective my-PV temperature sensor is to be installed in a
suitable location to provide a reliable reading!
With electric underfloor heating for instance in a probe-tube in the floor.
If measuring the air in the room, avoid direct sunlight.
TIP: When specifying room temperatures, to avoid using power from the public grid
the minimum values for day and night should be set correspondingly low. See
explanation "SH 1 temperatures".

AC•THOR®/ AC•THOR®9s Operating instructions, version a0020000 20
Data my-PV
temperature sensor
Room temperature
(sun = daytime
operation)
Current power output
Homescreen
On the display a sun or moon symbol shows in which time period the room temperature control is
currently operating. Different minimum temperatures can be specified for day and night.
Specific settings for operating mode M6
SH 1 temperatures (with AC•THOR 9s SH 1, SH 2 and SH 3)
The maximum room temperature permitted to be reached at the my-PV temperature sensors can be
adjusted (factory setting 22 °C), as are the minimum temperatures which should be maintained in
the day and night periods (factory setting 20 °C in each case).
SH 1 Switching times (with AC•THOR 9s SH 1, SH 2 and SH 3)
Start and finish of the night period can both be adjusted with hours and minutes. The factory setting
suggests the period between 10 pm and 5 am. This setting can be selected as desired for all days of
the week with corresponding selection of the button alongside the time (MON-SUN, MON-FRI, SAT-
SUN).
Temperature sensors
Sensor assignment AC•THOR:
Application
Sensor number
Space heating
1
Sensor assignment AC•THOR 9s:
Excess power control and boost backup are then carried out individually for each load output.
Load output / Application
Sensor numb
Out-3 / Space heating 3
3
Out-2 / Space heating 2
2
Out-1 / Space heating 1
1
M7: Hot water + PWM
AC•THOR: Hot water with a single-phase immersion heater
AC•THOR 9s: Hot water with a three-phase immersion heater