FAQ Category: Solar energy

By turning 45°, the gravity brake integrated in the ball valve can be set up manually.

The eTherm S (self-sufficient solution -> plug and play solution for small storage tanks) has a heating rod that is modulated by the controller according to the surplus. Due to the design (heating rod in the storage tank), this system is particularly suitable for small drinking water storage tanks. The...

In solar thermal energy, collectors convert solar radiation into heat, which is transferred through a water-glycol circuit to a hot water or buffer tank. In photovoltaic modules, solar radiation is converted into electrical voltage, which is fed into the building's power grid through an inverter. Photovoltaic power can be converted...

The max. permissible temperature of the medium in the solar flow is short-term at 140°C In the solar return with the pump, the max. permissible medium temperature is at 110°C.

The eTherm C executes commands given to it by an energy manager. If the wallbox is able to communicate with the energy manager, the system can usually be freely programmed.

The eTherm P can control up to two additional consumers by means of external auxiliary relays. With the external consumers, stepless power modulation up to 12 kW can be achieved. The cascade of eTherm P and eTherm C offers a particularly effective combination. Here, the entire output is converted into...

For the electrical connection, two additional installation contactors are set as additional auxiliary relays. Usually, a 1-phase and a 3-phase installation contactor must be installed here. The first phase of the cartridge heater is thus connected to the 1-phase contactor, the two remaining phases of the cartridge heater are connected...

The eTherm is always connected to the electrical system as the last consumer before the bidirectional meter. The direction arrows on the measuring clamps must be set so that they point in the direction of the consumers. The correct polarity on the sensor module must be observed.

An incorrect flow direction during flushing / cleaning can lead to the cone of the gravity brake being pressed too deeply into the seat and not being released again by itself.

ÜSTA stratification loading set: layered, optimum accumulator loading via single or double switchover heat meter set