my-PV AC•THOR 9s – PV Power Manager 9 kW for Hot Water and Heating with Solar Power

my-PV AC•THOR 9s – PV Power Manager 9 kW for Hot Water and Heating with Solar Power

Steplessly controlled photovoltaic power manager with 9 kW for hot water, heating and electrical heat sources

The my-PV AC•THOR 9s is a three-phase photovoltaic power manager for hot water and heating with up to 9 kW total output – a compact home technology hub in A5 format for larger buildings. It controls up to three electrical heat sources simultaneously and fully automatically based on available PV surplus and heat demand. With up to 9 kW total output, low-energy homes of up to 200 m² can be supplied photovoltaically. According to the manufacturer, up to 85% PV self-consumption is achievable even without battery storage, with cost savings of up to 30% compared to conventional systems.

What is the difference between the AC•THOR 9s and the AC•THOR?

While the AC•THOR steplessly controls up to 3 kW via a single-phase output, the AC•THOR 9s features three separate controllable outputs of up to 3 kW each – totalling up to 9 kW steplessly. The three-phase grid connection with neutral conductor enables the simultaneous charging of up to three independent zones (3 × 3 kW). In operating mode M3, a second three-phase heating element can additionally be switched statically via the switching output – enabling a total output of up to 18 kW (9 kW steplessly controlled + 9 kW statically switched), available from firmware version a0020513. Three-phase heating elements with a shared neutral conductor can also be connected directly.

Applications and operating modes overview

The AC•THOR 9s covers a wide range of applications: photovoltaic hot water preparation up to 9 kW, stratified charging, two-zone and three-zone space heating, underfloor heating and PV integration of standard heat pumps (PV-ready). Multiple operating modes allow up to three independent heating circuits to be controlled simultaneously. In operating mode M3, a second three-phase heating element can be statically switched via the switching output – enabling up to 18 kW total (9 kW steplessly + 9 kW statically switched), available from firmware version a0020513. The building mass itself – such as screed floors – can be used as thermal storage.

System integration – battery storage, smart home, inverters and balcony power stations

In combination with the my-PV WiFi Meter, the AC•THOR 9s uses only surplus PV energy for heat generation – including in combination with balcony power stations and micro-installations. As a hybrid storage system, it optimally complements battery storage: the battery is charged first, after which the AC•THOR 9s stores remaining surplus in hot water or building mass. Compatible systems include Fronius GEN24, Huawei EMMA, KOSTAL PLENTICORE, SolarEdge as well as Sungrow and Solis. Thanks to its open system design, the AC•THOR 9s also communicates with numerous smart home and energy management systems via Ethernet RJ45 and RS485. As compatibilities are subject to change, we recommend verifying the current list with the manufacturer before purchasing.

Optional functions and cloud features

Any remaining energy shortfall can optionally be drawn from the public grid – making it unnecessary to start a conventional heating system. The AC•THOR 9s supports the my-PV cloud features SPO (Solar Peak Optimizer) and DTO (Dynamic Tariff Optimizer). The SPO responds to negative exchange electricity prices and starts heat generation exactly when no EEG remuneration is paid – ideal for new PV systems in Germany from 2025. The DTO automatically optimises heat generation based on the cheapest exchange electricity prices from 22 European countries – also for periods of low PV yield or at night.

Scope of delivery:

• AC•THOR 9s
• my-PV temperature sensor 5 m

Features:

• Stepless control from 0–9 kW – up to 85% PV self-consumption even without battery storage
• 3 controllable outputs of 3 kW each – simultaneous charging of up to three zones
• Hot water and heating with solar power – one device for all electrical heat sources
• Three-zone space heating, underfloor heating, infrared and heat pumps – universally applicable
• Suitable for three-phase heating elements with shared neutral conductor
• Up to 18 kW via switching output (9 kW stepless + 9 kW static) – from firmware a0020513
• Low-energy homes of up to 200 m² can be supplied photovoltaically
• Building mass usable as thermal storage – enormous storage capacity at no extra cost
• Hybrid storage system with battery – optimal priority control between battery and thermal storage
• Also suitable for balcony power stations – maximises self-consumption even of small PV surpluses
• Compatible with battery storage, smart home and energy management systems
• Supports my-PV SPO and DTO cloud features
• Colour touch display 2.83" – commissioning without additional tools
• Exceptionally compact – only 1.3 kg, residential design
• All connections plug-in – no opening of the device required
• No thyristor controller – EMC and grid compliant, THDi < 3%
• 2-year manufacturer's warranty

For further technical details and notes, please refer to the datasheet.