Frequently Asked Questions

No, devices with electronics cannot be powered. Voltic’s output is DC (Direct Current) instead of the standard 230V AC (Alternating Current) 50Hz from the mains. Only resistive loads (heaters) can be connected.

Connecting a resistive load directly to the panels is inefficient and dangerous. Voltic uses MPPT (maximum power point tracking) technology that changes the output resistance to extract maximum power from the panels by constantly monitoring for changes in solar radiation. A directly connected heater element has a constant resistance which, even if matched with the installed panels, would only be optimal for certain conditions of the day and year.

In addition, such an installation is dangerous because it can overheat. The boilers safety system (thermostat) is made to work with alternating current (AC) and cannot interrupt the direct current (DC) generated by the solar panels.

Voltic is fully compatible with AC circuit breakers using the additional external protection of boiler safety systems.

Yes, as long as the unit does not have additional electronics or a motor.

Yes. Voltic can operate autonomously only on power from the photovoltaic panels, making it suitable for remote or mobile applications.

Voltic can work with most electric or hybrid water heaters as long as they do not have additional electronic circuits. Most water heaters have heating elements with a power of 2 to 3 kW and are connected directly to the power input, without disassembling or changing the wiring of the water heater. It is mandatory that the heating element power is higher than the installed solar power in order to utilize all the power from the sun.

Yes, Voltic has a graphical display by which it can be fully set up and controlled, as well as see statistics on the energy generated up to 10 years ago. The application enables remote monitoring and management of the system, as well as a more convenient visualization of the history of the device.

No. Voltic does not support charging batteries or other electrical devices.

No. Double-check the connection of the cables from the PV panels to Voltic, because the reversed polrarity will cause damage to the device, which is not covered by the warranty.

User reviews

Jino Vlahov
I am heating a 80 liter water heater with 3 solar panels with total power of 1370 W. For September I got 140 kWh, there is always hot water, without using mains grid.
Stoyan Stefanov
Having a family of four with two teenagers, the hot water is never enough. I bought a set of VOLTIC controller along with 4 panels of 445 W each with total power of 1780 W to heat a 120 liter water heater. Even in a cloudy day with no clear skies the system managed to reach 45 degrees C of the water heater.
Boris Karpuzov
At first I decided instead of heating water heater, to use VOLTIC for day time heating, using convector stove with rated power of 2.5 kW. My house is located in the Padalo village high in the mountain and I installed a set of 4 solar panels each 450W. My idea is during the day to sustain acceptable room temperature without using the mains grid, while I am hunting in the forest!