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.

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 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).

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. This may result in power being drawn from the mains or a battery being discharged!

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".

This option is not available if the “Activate relay when heating” function is activated in the web interface.

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.

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.

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.

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.

Note: One temperature sensor is always enclosed with the  AC•THOR, other sensors must be purchased separately.

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.

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.

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.

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.

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 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).

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. This may result in power being drawn from the mains or a battery being discharged!

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.

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 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.

In this operating mode, two heating elements 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 sufficient surplus PV is available. When this occurs, the first heater starts again from 0 with the power regulation. The total range of regulation is thus extended.

The my-PV temperature sensor is to be used.

There are two operating modes:

A fixed threshold value can be set from which the second load is switched on.

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".

Alternatively, a my-PV Meter can be used to measure the power of the switched load. See chapter "Load measurement at relays with my-PV Meter (recommended)".

Optionally, the AC•THOR can also take over boost backup of the hot water temperature. This can be done either with both heating elements or only with the switched heating element.

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.

The configuration is done in the web interface. See chapter "Special setting options in the web interface".

Scaling of the power display:

• With the AC•THOR to 3,000 watts + power measurement at the relay

• With AC•THOR 9s to 3,000 watts + power measurement at the relay / 3

A three-phase load is assumed at the relay (see wiring diagram).

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 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).

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. This may result in power being drawn from the mains or a battery being discharged!

Relay output:
Alternatively, the minimum temperature can also be maintained only by the switched heating element on the relay. This may result in power being drawn from the mains or a battery being discharged!

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.

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.

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.

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.

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 optional automatic temperature boost backup with relay output has been selected, a minimum temperature can then be set (factory setting 50 °C).

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.

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

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.

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 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).

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. This may result in power being drawn from the mains or a battery being discharged!

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.

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 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).

Sensor assignment AC•THOR:

Sensor assignment AC•THOR 9s:

Excess power control and boost backup are then carried out individually for each load output.

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.

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).

Sensor assignment AC•THOR:

Sensor assignment AC•THOR 9s:

Excess power control and boost backup are then carried out individually for each load output.

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.

This function was tested by my-PV with the pump types Wilo Para PWM1 and PWM2 and Wilo Varios PICO-STG. For PWM2, the setting command xxx.xxx.xxx.xxx.xxx/setup.jsn?pwmt=2 must be entered in the URL of the webinterface. For other pumps, the function cannot be certified.

The output of the PWM signal starts when the target temperature + hysteresis is reached at sensor 2. The signal becomes stronger the further the target temperature + hysteresis is exceeded.

Optionally, the AC•THOR can also take over guaranteeing the hot water temperature. For this, a third my-PV temperature sensor is to be used.

Note: A temperature sensor is always included with the AC•THOR, other sensors must be purchased separately.

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 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).

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. This may result in power being drawn from the mains or a battery being discharged!

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".

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.

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.

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.

With the control modes "Adjustable Modbus RTU" and "Adjustable Modbus TCP" the AC•THOR receives the power-value in the feed-in point from an inverter or Modbus counter. The required communication registers shall be set according to the manufacturer's description.

The Device ID must be set according to the external device.

Description of the data types:

As an option, other measurements can be queried in the system in addition to PV excess measurement (see Control Settings) and visualise them on the my-PV cloud. Available variables are Photovoltaic power, Battery power, EV Charging station power and Heat pump power.

Detect measuring point with "my-PV Meter"

If you are using the my-PV Meter to detect these values, you must enter the ID (serial number) of the device. You will find this number on the device.

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.

Although my-PV does not produce charging stations, there are various options for compatibility.

Direct compatibility with charging station
Direct compatibility exists if my-PV also performs the energy management of the charging station. However, it should be noted here that the power controllers from my-PV can only modulate the power on electric resistance heaters. This means that they never take over the power modulation of the charging station! However, the energy management system can tell the charging station how much photovoltaic surplus is available. As soon as the available charging current exceeds the limit of 6 amps, the charging station can adjust the power for vehicle charging accordingly. Although my-PV does not actually consider itself a Smarthome manufacturer, this type of energy management is possible with some types of the Keba brand.
More information on compatible charging stations can be found here.

Indirect compatibility with charging station
Indirect compatibility already exists when a higher-level energy management system has control over all consumers. For example, if a smarthome is able to control a charging station in addition to providing power to my-PV. In some cases, such systems also allow prioritisation of the different applications. Examples of such indirect compatibility include the SMA Sunny Home Manager, E3DC or Solar-Log. In this case, the my-PV device has nothing to do with the charging station. From my-PV's point of view, the wallbox manufacturer openWB also falls into the category of higher-level energy management, because the entire control and regulation strategy of the consumers is the responsibility of openWB, while the my-PV devices are only given the power output.
With both indirect and direct compatibility, an intelligent system coordinates the heat applications of my-PV and the charging station. There is also a third possibility.

Compatibility with charging station without common energy management.
This concerns the case where there are both applications, but they do not interact intelligently with each other through any energy management. This is the case when, for example, an inverter manufacturer can control its own charging station with solar power, but has not implemented the my-PV application as part of the energy management in its control system. In this case, my-PV exists as a separate controller quasi parallel to it and uses the PV surplus according to the power measurement from the house connection. It can happen that the my-PV application does not leave any surplus for the charging pole.
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" in the chapter "Measured value settings".

Multiple AC ELWA 2, AC ELWA-E, AC•THOR or AC•THOR 9s can be used in a network. Operation is based on the master / slave principle.

This menu item only appears in the device settings in the my-PV Cloud, not in the local Web-Interface! For this, it is essential that the device has an active internet connection and “Cloud mode” is activated.

The my-PV API allows current operating data to be queried and setup changes to be made via an internet-based interface (https). Power can be specified for the duration specified in the request.

An access token can be generated in the ‘API’ menu item. In conjunction with the 16-digit serial number of the device, the endpoints of the API can be used with the token. This token is only displayed once in the my-PV Cloud, so please make a note of it. However, you can generate a new token at any time if necessary.

The detailed documentation of the API (Swagger documentation) is available at: api.my-pv.com

Display - Settings - Factory settings:

Check for new firmware: Start check for new updates manually. When a new version is available, it will be stored on the SD card. This procedure takes several minutes. The AC•THOR will operate normally during this period.

Start firmware update: if a newer software version is present on the SD card, the update can be started manually. After the update, the unit will be restarted automatically.

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.