FAQ Solar Energy
The eTherm C relies on external energy management for its operation. The Fronius Ohmpilot or the AC Thor 9S are representatives of the modulating energy managers. This makes it possible to control the eTherm C continuously from 0-9000 W.In this process, the smart meters of the energy managers measure the...
The main task of the eTherm P is to use own produced PV surplus electricity (current measuring sensor included in the scope of delivery) for heating of a buffer or potable water storage tank. The station has various control options, such as 0-10 V or SG-ready, and also various selector...
The eTherm P/C can be optimally connected to existing systems. For this purpose, the stations are connected at the very top (forward) and at the very bottom (return). If there are no free connections at the storage tank, the stations can also be connected by means of T-pieces parallel to...
The eTherm C requires an energy manager for intelligent PV surplus utilization. The following combinations are possible: Fronius Ohmpilot (0-9000 W modulating) MYPV ACThor 9S (0-9000 W modulating) Solaredge Smart Energy Hot Water Controller (0-9000W modulating) powerReducer-Set eTherm C3 (0-3000 W modulating) SMA Sunny Home Manager 2.0 (3-stage switching) Solar-Log...
The controller of the eTherm S can control one phase of the eTherm C9, and is thus able to act as an energy manager to regulate the excess power and modulate the eTherm C from 0-3000 W.
The selection of eTherm is sometimes based on the power of the installed PV system and its peak power in kWp. 3 kW 9 kW 12 kW 18 kW 27 kW 36 kW
The eTherm P is designed to maximize self-consumption. With this background, the eTherm is also able to activate additional consumers if required. This allows the eTherm to generate higher self-consumption with the help of the heat pump via a switching contact. If a SG-ready connection is available, the eTherm can...
Products of the eTherm family were developed for PV surplus power use. The stations use only surplus electricity. This means: the eTherm products do not start until all household consumers, the battery storage and, if applicable, the charging station for the electric car have been served and surplus electricity is...
The eTherm P/C can monitor the storage tank temperature by means of a storage tank temperature sensor (not included in the scope of delivery) and thus serve as an emergency heater even without external energy management. If the storage tank temperature falls below a threshold value (adjustable), the stations start...
The eTherm P/C must not be operated directly with potable water. However, the stations can be connected to potable water storage tanks with internal heat exchangers. In the case of bivalent drinking water storage tanks, the heat exchangers should be connected in series.