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MYPV AC-THOR Operation Manual

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Manual
AC•THOR / AC•THOR 9s: Operation Manual
Last update: 6/23/2025, 9:12 AM
Firmware version: a0021900
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  • Page 1: Table Of Contents

    Manual AC•THOR / AC•THOR 9s: Operation Manual Last update: 6/23/2025, 9:12 AM Firmware version: a0021900 Contents 1 Assembly 2 Commissioning 2.1 Select language 2.2 Select operating mode 2.3 Possible Controls 2.4 Temperature sensor assignment and activation 2.5 Save the settings 3 Controls and displays 3.1 Homescreen 3.2 Data lagger...
  • Page 2 4.1 M1: Hot water 4.1.1 Explanation 4.1.2 Specific settings for operating mode M1 4.1.3 Temperature sensors (only with AC•THOR 9s) 4.2 M2: Hot water stratified charging 4.2.1 Explanation 4.2.2 Specific settings for operating mode M2 4.3 M3: Hot water 6 kW/18kW 4.3.1 Explanation 4.3.2 Load measurement on relays with my-PV Meter (recommended) 4.3.3 Specific settings for operating mode M3...
  • Page 3 4.7.1 Explanation 4.7.2 Specific settings for operating mode M7 4.8 M8: Frequency mode 5 General settings 6 Local Web-Interface 6.1 Search for devices in the network 6.2 Systems without Internet access 6.3 Connect Web-Interface 6.4 Home (homepage) 6.5 Data logger 6.6 Status information 6.7 Settings 6.8 Special setting possibilities in the Web-Interface...

  • Page 4: Assembly

    6.9 Help 7 Frequency control 7.1 Explanation 7.2 Specific settings for Frequency control 8 Potential-free input for external control 9 Modbus RTU connection for external control 10 Firmware update 10.1 Update from server 10.1.1 Manual Update 10.2 Update with SD card 11 Status codes 12 Temperature sensors: Assignment and function (only with AC•THOR 9s) 13 Fault temperature sensors...

  • Page 5: Commissioning

    2. Commissioning A quick-start guide is enclosed with the unit, in which each step of the initial commissioning is explained in detail. These instructions can also be found here 2.1. Select language Use the left and right arrow keys to see more options. 2.2.
  • Page 6 Comments Connection possible from WiFi meter serial number: 230505XXXX! To use the my-PV Cloud, it is recommended to also integrate the AC-THOR into the network! Signalsource Adjustable Modbus TCP (Sunspec etc) Hardware Interface (RJ45, Ethernet) Comments Cannot be selected on the display, configuration is done in the web interface. See chapter "Special setting possibilities in the Web-Interface".
  • Page 7 Comments The control signal is received via Modbus RTU (RS485, A B GND)! Connection diagram according to chapter 9. When controlling via Modbus RTU, the operating mode M7 cannot be used! Signalsource http Hardware Note: Inverters that are not SPH-UP may need to be updated to the latest Interface (RJ45, Ethernet) firmware version to communicate via RS485, according to Growatt.
  • Page 8 Hardware Interface (RJ45, Ethernet) Comments For control by freely programmable energy management or smart home systems, a description of the open protocols Modbus TCP and http is available in a separate document. The connection to the signal source is made via LAN. The description can be found here or at www.my-pv.com/en/info/downloads/ with the search...

  • Page 9: Temperature Sensor Assignment And Activation

    Hardware Interface (RJ45, Ethernet) Comments Attention When controlled by an inverter, a feed-in meter is required in the system. The query of the inverter otherwise provides no data. Attention We ask for your understanding that we cannot do any binding support for third-party products.

  • Page 10: Save The Settings

    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. 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.
  • Page 11 Homescreen AC•THOR 9s: 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.

  • Page 12: Data Lagger

    Lights up = heats with PV excess. Flashes = boost backup mode Status symbol Lights up = no control signal Status symbol Lights up = physical connection to the RJ45 network connection is intact Status symbol Lights up = no intact physical connection to the RJ45 network connection Status symbol Block active...

  • Page 13: Status Information On The Display

    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.
  • Page 14 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.
  • Page 15 Frequency: shows the current grid frequency. 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.

  • Page 16: Settings

    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).

  • Page 17: Explanation

    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! 4.1.1.

  • Page 18: Specific Settings For Operating Mode M1

    * In operating mode M1 the status of the relay is displayed if the setting "Activate relay when heating" is switched on. See chapter "Special setting options on the web interface". ** Single-Boost. Starts a once-only boost backup mode (button only appears if boost backup is activated) With the hot water boost backup, limit the use of grid power by avoiding the switch- off at maximum temperature.
  • Page 19 Attention 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).
  • Page 20 Attention 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! Attention 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"...

  • Page 21: Temperature Sensors (Only With Ac•Thor 9S)

    Attention 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.

  • Page 22: M2: Hot Water Stratified Charging

    Load output Out-2 / Center / heater Sensor number Load output Out-1 / Bottom / heater Sensor number 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.
  • Page 23 Attention 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.

  • Page 24: Specific Settings For Operating Mode M2

    4.2.2. 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! Attention If the cut out temperature of an immersion heating element with a bimetal...
  • Page 25 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. Restrict the times when the minimum temperature has to be maintained to mornings and evenings, to increase your own PV consumption through the day! Attention...

  • Page 26: M3: Hot Water 6 Kw/18Kw

    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. 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! 4.3.
  • Page 27 However, switching only actually takes place when the surplus or the power input is 10% higher than the set threshold value. There is also a delay of a few seconds before switching to ensure that stable conditions prevail. This threshold value is set in the web interface. See chapter "Special setting options in the web interface".
  • Page 28 Attention The following applies to external control via "Modbus TCP", "http" or "SMA Home Manager" (not "SMA Direct Meter Communication"): An AC•THOR without an available load at the controllable output cannot be externally controlled in M3 operating mode. Since the load at the relay is not controllable, an unstable control behavior would be expected! This also applies if a my-PV Meter is used for power measurement at the switched load! Attention...

  • Page 29: Load Measurement On Relays With My-Pv Meter (Recommended)

    The power display is automatically scaled by the additional power. 4.3.2. Load measurement on relays with my-PV Meter (recommended) If a my-PV Meter is used for power measurement at the switched load, then the consumption is also shown in the power display and taken into account in the energy recording of the data logger.
  • Page 30 Homescreen AC•THOR 9s in the web interface Attention When measuring the load on relays with a my-PV Meter, it is essential to follow the corresponding wiring diagram! Attention The relay is switched on for the first time when a surplus level of 3kW is exceeded with the AC•THOR or 9kW with the AC•THOR 9s.

  • Page 31: Specific Settings For Operating Mode M3

    Attention If the nominal power at the switched load is reduced at a later point in time (e.g. due to a modification of the system), the switching threshold must be changed once to "Load on relay". Afterwards, the setting can be changed back to "Load measurement at relay with my-PV Meter".
  • Page 32 The "Relay" backup mode has the advantage that the lower storage area remains "free" for PV surplus and less energy tends to be required for temperature backup. Hot water 1 min switching times This setting can be selected when the temperature boost backup is "On" under Hot water 1 temperatures".

  • Page 33: M4: Hot Water + Heat Pump

    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.

  • Page 34: Specific Settings For Operating Mode M4

    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).
  • Page 35 Attention 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).

  • Page 36: M5: Hot Water + Space Heating

    Attention 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.

  • Page 37: Explanation

    Note for AC•THOR 9s as of Ethernet firmware version a0020806 Compared to previous versions, there is now the following advantage: If a minimum temperature must be ensured with maximum power at room heating 1 (output Out- 1), then the AC•THOR 9s can still control power at outputs Out-2 (room heating 2) or Out-3 (hot water) during this time, provided the target temperature has not yet been reached at these and there is still surplus.

  • Page 38: Specific Settings For Operating Mode M5

    Attention 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! Attention For controlling the space heating, the respective my-PV temperature sensor is to be installed in a suitable place to provide a reliable reading! When specifying room temperatures, to avoid using power from the public grid the minimum values for day and night should be set correspondingly low.
  • Page 39 be installed! Attention 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).

  • Page 40: Temperature Sensors

    Attention 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.

  • Page 41: M6: Space Heating

    Sensor number Application Space heating Sensor number Sensor assignment AC•THOR 9s: Excess power control and boost backup are then carried out individually for each load output. Load output Out-3 / Hot water / Application Sensor numb Load output Out-2 / Space heating 2 / Application Sensor numb...
  • Page 42 Note: One temperature sensor is always included with the AC•THOR, other sensors must be purchased separately. Attention To control the space heating, the respective my-PV temperature sensor is to be installed in a suitable location to provide a reliable reading! When specifying room temperatures, to avoid using power from the public grid the minimum values for day and night should be set correspondingly low.

  • Page 43: Application Space Heating

    for all days of the week with corresponding selection of the button alongside the time (MON- SUN, MON-FRI, SAT-SUN). 4.6.3. Temperature sensors Sensor assignment AC•THOR: Application Space heating Sensor number Sensor assignment AC•THOR 9s: Excess power control and boost backup are then carried out individually for each load output.

  • Page 44: Explanation

    Attention When controlling via Modbus RTU, the operating mode M7 cannot be used! 4.7.1. Explanation In this operating mode, an electric heating element is supplied linearly with excess PV energy. In addition, the AC•THOR can send out a temperature-dependent PWM signal. This can control the speed of a pump.

  • Page 45: Specific Settings For Operating Mode M7

    4.7.2. Specific settings for operating mode M7 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! Attention If the cut out temperature of an immersion heating element with a bimetal...
  • Page 46 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"...

  • Page 47: M8: Frequency Mode

    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.
  • Page 48 Date: The date can be entered in the format dd.mm.yy. Time: The time can be entered in the format hh:mm:ss. NTP server: (NTP = Network Time Protocol) As long as the router provides an Internet, the AC•THOR draws its time information automatically from the Internet. However, the respective time zone is not specified.
  • Page 49 Display duration: the number of seconds elapsing until the display is turned off can be set. A value between "10" and "250" seconds can be entered. Display brightness: brightness of the display can be adjusted in ten steps. Logo brightness: brightness of the illuminated AC•THOR logo on the unit can be adjusted in ten steps.
  • Page 50 The value can be set on the display between 17 – 100 percent. Attention This setting is not taken into account in M3 operating mode. Attention Adjustment is generally only required if the rated load power is bigger than the power available for the AC•THOR.
  • Page 51 Level 2 offers slightly restricted setting possibilities for experienced users. Some examples of settings which cannot be altered are those for communication, operating mode, basic settings, sensor assignment and control settings. In level 1 the setting possibilities are limited to temperature specifications and switching times for space heating (only relevant in operating modes M5 and M6), as well as the brightness and duration of the display settings and brightness of the AC•THOR logo.
  • Page 52 Start power firmware update: if a newer output unit software version is present on the SD card, the update can be started manually. After the update, the unit will be restarted automatically. With AC•THOR 9s the update for both power stages is started. Factory settings: Factory settings: tapping on the menu point resets the AC•THOR to its factory settings.

  • Page 53: Local Web-Interface

    6. Local Web-Interface The local web interface is a single HTML file that is saved locally after download. After that, internet access is no longer necessary. It only connects to the unit within the local network, while remote access is only possible via the data cloud.
  • Page 54 Scanner.exe" (included in the "Software package AC•THOR.zip" on www.my-pv.com). To do this, unpack the scanner program into a local directory. 2) If there are several my-PV devices in the network, the unit to be configured can be identified by the serial number (for AC•THOR see type plate on the back of the unit). 3) The web interface opens by double clicking on the respective search result.

  • Page 55: Systems Without Internet Access

    From firmware version a0020000 onwards, the Web-Interface of AC•THOR is outsourced to an external HTML file. If the device is accessed directly via the IP address in the web browser, this view appears. Follow the download link (above) and save the file locally, then open the file to access the Web-Interface.

  • Page 56: Connect Web-Interface

    From Ethernet firmware version a0020000 applies: To be able to access the Web-Interface of AC•THOR in systems without internet access, please download the required HTML file in advance via this link: http://www.my-pv.com/download/currentversionget.php 6.3. Connect Web-Interface If the Web-Interface is started via the scanner program (see chapter “Search for devices in the network “), the connection to the device is established automatically.

  • Page 57: Home (Homepage)

    6.4. Home (homepage) The AC•THOR start page in the web browser gives the same information as the home screen on the display. Navigation using the symbols bar is carried out in the same way. Further information in the chapter "Control and display elements".
  • Page 58 A quick selection in the upper right corner allows direct access to the Web-Interface from other my-PV devices in the network. The button "Search Devices" scans the network for my- PV devices. If the device search does not produce a result, the IP address can also be entered manually in the address line of the web browser.

  • Page 59: Data Logger

    6.5. Data logger The AC•THOR data logger In the web browser gives the same information as the data logger on the display. The selection of values and time period is possible using the menu bar above the diagram. Further information in the chapter "Control and display elements". Move the mouse over the bar and the exact values will be shown! Orange bars indicate the proportion of energy that comes from the photovoltaic system, red bars indicate the proportion of optional boost-backup.

  • Page 60: Status Information

    6.6. Status information The status information in the web browser contains more details than that on the AC•THOR display. Explanations can be found in the chapter "Status information on the display". Depending on the operating mode and application, this representation varies. 6.7.

  • Page 61: Special Setting Possibilities In The Web-Interface

    The setting possibilities in the web browser are more extensive than those on the AC•THOR display. See next section " Special setting possibilities in the Web-Interface". An explanation of the other general unit settings is included in the chapter "General settings".
  • Page 62 Activate relay when heating: If this option is "On", the relay is switched on for at least 120 seconds when heat is emitted. The relay can thus be used as a potential-free signal transmitter. It can also be used to switch smaller circulation pumps with outputs of up to approx. 50 Watts.

  • Page 63: Special Settings For Operating Mode M3 (6Kw/18 Kw)

    Alternatively, the M7 operating mode of the AC-THOR offers a further option for loading large thermal stores with a circulation pump. 6.8.2. Special settings for operating mode M3 (6kW/18 kW) The following parameters can be set on the web interface in operating mode M3 (6kW/18 kW).
  • Page 64 Control tolerance: This value defines the reaction sensitivity of the AC•THOR relay to changes in the power input. The second heating rod is switched by the relay. Load at relay: The control range of the AC•THOR is extended by this adjustable threshold value.

  • Page 65: Legionella Boost Outputs (Only With Ac•Thor 9S)

    6.8.3. Legionella boost outputs (only with AC•THOR 9s) With the AC•THOR 9s, a selection of the load outputs to be used in the Legionella program can be made in the web interface. All three outputs are activated in the factory.

  • Page 66: Control Settings

    If, for example, 3 single-phase heating elements are used and only one of them is in a drinking water storage tank, then the Legionella programme should only be used on this heating element! 6.8.4. Control Settings In this section the choice of the signal source for the AC•THOR is made. Attention A control type can only be selected if the AC•THOR has the factory preset device number 1.
  • Page 67 adjustable time interval. This can ensure that other applications with regulated surplus control are not deprived of surplus energy by the my-PV application. This includes, for example, charging stations for electric cars that are neither directly nor indirectly connected to my-PV. Therefore, my-PV sets -1500W as the default for the interval target value.
  • Page 68 Attention With "Adjustable Modbus TCP" the control signal is received via network (RJ45, Ethernet)! Attention With "Adjustable Modbus RTU" the control signal is received via Modbus RTU (RS485, A B GND)! This control system is also configured via the Web-Interface. At least for commissioning, a network access is therefore temporarily necessary, but this can be removed after configuration! A simple network router is part of the normal tools of a craftsman these days.
  • Page 69 Description of the data types: Int16 16-bit integer value, two's complement representation Int16-nc 16-bit integer value, magnitude sign representation (1st bit = sign) Int32 32-bit integer value, two's complement representation Int32-sw...
  • Page 70 32-bit integer value, two's complement representation, swapped words Int32-nc 32-bit integer value, magnitude sign representation (1st bit = sign) Int32-sw-nc 32-bit integer value, magnitude sign representation (1st bit = sign), swapped words Float 32-bit float value Float-sw 32-bit float value, swapped words Attention This control types are currently not approved for hybrid systems with battery storage.

  • Page 71: Measurement Settings

    Attention We ask for your understanding that we cannot do any binding support for third-party products. For questions about third-party products, please contact the technical support of the respective company. Attention Operation with battery may require additional control parameters. In this case, please contact the technical support of my-PV.
  • Page 72 Detect measuring point by requesting data from external device ("Adjustable Modbus TCP") If the measured values come from an external device like an inverter or Modbus meter, the required communication registers shall be set according to the manufacturer's description. Attention Measured value acquisition only works via network, not via Modbus RTU! Attention We ask for your understanding that we cannot do any binding support for third-party...
  • Page 73 Description With "Adjustable Modbus TCP", the control signal is received via the network (RJ45, Ethernet)! Setting Modbus IP address Description Enter the IP address of the device from which you want to retrieve data. Setting Device ID / Port Description Device ID and port must be set according to the external device.
  • Page 74 Description 16-bit integer value, two's complement representation 16-bit integer value, magnitude sign representation (1st bit = sign) 32-bit integer value, two's complement representation 32-bit integer value, two's complement representation, swapped words 32-bit integer value, magnitude sign representation (1st bit = sign) 32-bit integer value, magnitude sign representation (1st bit = sign), swapped words 32-bit float value 32-bit float value, swapped words...

  • Page 75: Battery Power

    Photovoltaic power At the measuring point "Photovoltaic power" it is possible to block the my-PV device if the inverter does not produce any power. The operation for optional boost-backup is not affected by this. Battery power With the "Battery power" measuring point, it is also possible to query the SOC (State of Charge) of the battery and the battery status, if this information is provided by the battery.

  • Page 76: Ev Function

    The positive effect of this is that the time of the higher target value of the control can be significantly shortened. It is regulated back to the original target value more quickly, which in turn ensures higher self-consumption. 6.8.6. EV Function Although my-PV does not produce charging stations, there are various options for compatibility.

  • Page 77: Multi Units

    However, the interaction with the charging station is coordinated with the AC ELWA-E from firmware 00205.00 and with the AC-THOR from firmware a0020800. The explanation can be found in the section "Interval target value" in the chapter "Control settings", as well as in the section "EV Charging station power"...
  • Page 78 Attention When using several units, the following things have to be considered: All devices must be connected to the router via network cable. Only one master can be assigned to a signal source and vice versa. A maximum of 10 slaves are possible per master. All slaves in the network must have different device numbers, even if these are assigned to different masters.
  • Page 79 As soon as an assignment has been made, further control settings are no longer possible or required. The IP address field is disabled and “Slave” appears in the Signal source field. After a device search in the quick selection at the top right, the slave with the set number appears.

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Ac-thor 9s