A mixer with a special 3D rotary vane design always produces the same pressure drop over the entire control range at different volume flows. This achieves a high control quality. This can be recognized by a quiet servomotor that can control a constant flow temperature even at low volume flows....
Archives: FAQs
What does GEG compliant thermal insulation mean ?
Pipes and fittings must be insulated at 50% of their nominal diameter at junctions, crossings and central manifolds in accordance with the Building Energy Act (GEG). For heating circuit groups, this means a fully enclosing minimum wall thickness and separation of the flow and return lines. The Tuxhorn tubra®-PGM/PGR pump...
What are the advantages of setting up fresh water stations as a cascade ?
A cascade is the parallel connection of several individual stations.Due to the cascade design, the outputs of several stations can be added together. In this way, greater tapping capacities can be achieved. The hot water flow rate of a cascade can be controlled more precisely. The next station is only...
How does the control of the eTherm C work ?
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...
What are the functions of the eTherm P and what is it used for ?
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...
Is it possible to retrofit the eTherm products into the heating system ?
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...
Overview of the external controllers of the eTherm C3/C9
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...
Can the controller of the eTherm S also control the eTherm C9 ?
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.
What power should my tubra®-eTherm have? How is this power related to that of my PV system ?
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
How does the compound control technique of the eTherm P and a heat pump work ?
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...