Photovoltaic heater
Reduce the costs of generating hot water for your heating system. Simply screw the photovoltaic heating element into your existing hot water tank.
Characteristics
2,000 Wp photovoltaic connected power – Up to 2,000 Wp photovoltaic module power can be connected to the heating element. The maximum heating output is 550 W. As a secondary or even primary energy source for hot water preparation or in combination in a central heating storage tank.
Registration-free island system – Since no electricity is fed into the grid, the photovoltaic heating element does not require registration. He works 100% in island operations.
DC power direct use Direct use of the direct current from the photovoltaic modules to heat water. No inverter or battery is needed.
Safe and robust design with redundant over-temperature protection, adjustable heat-up temperature, intuitive interface and input overload/polarity protection.
Easy installation – The heating element works in protective extra-low voltage. This means that no electrician is necessary for commissioning. The photovoltaic modules are connected directly via MC4 plug connections.
Cost-saving The photovoltaic heating element enables the generation of cost-effective hot water in your existing heating system. The heating element generates around 19,000 liters of hot water per year from around 1,000 kWh of photovoltaic electricity (2 - 3 photovoltaic modules).
Made in Germany - 100% development and production in Germany.
Warranty 3 year manufacturer's warranty.
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2,000W connected load
Up to 2,000Wp photovoltaic power can be connected. The PV heating element heats the water with up to 550W.
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Registration-free / island system
Hot water supply independent of the 230V mains power. No registration of the PV system necessary.
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safety extra-low voltage
Due to the low voltage level of less than 50 V, no electrician is required for installation.
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Innovative MPP tracker
50% higher yield thanks to the innovative MPP tracker, which always ensures the maximum yield of the PV modules.
Photovoltaic heating element at a glance
The heating element is designed for retrofitting existing heating systems. It can be screwed into a standard 1.5" thread on a domestic hot water tank.
The heating element provides considerable support for hot water preparation. In many cases, gas and oil heating can be switched off completely, particularly in the summer months. Since fossil heating is particularly inefficient in the summer months when hot water demand is relatively low, great savings can be achieved.
Up to 2,000 Wp of photovoltaic power can be connected to the heating element. The maximum heating output is 550 W. This means that the hot water supply for a 2-4 person household can be almost completely covered in the summer months. Experience has shown that over the course of the year around 50% of the hot water is provided by the photovoltaic heating element. The maximum water temperature is 65 °C in drinking water systems and 85 °C in decalcified heating systems.
Product description
The MPP tracker (patented) integrated in the heating element with 99% efficiency ensures that the photovoltaic modules are operated at their optimal operating point (MPP). This enables an additional yield of up to 50% compared to photovoltaic heating elements without an MPP tracker.
Since the heating element is operated as an isolated system and does not feed into the power grid, the photovoltaic modules do not need to be registered.
The photovoltaic modules are connected via photovoltaic MC4 plug contacts. Since the entire system operates at protective extra-low voltage, the system can be put into operation without an electrician. This saves costs.
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Technical specifications
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Specification
Dimensions of entire heating element (length, width, height): 15.4 cm x 10 cm x 47 cm
Dimensions of housing including photovoltaic plug (length, width, height): 15.4 cm x 10 cm x 10 cm
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Efficient MPP tracker
Patented MPP tracker with 99.9% efficiency for maximum solar yield. Up to 2,000 Wp of photovoltaic power can be connected to the heating element.
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easy installation
Plug & Play - The photovoltaic modules are simply plugged in. The heating process begins immediately.
Due to the low voltage level of less than 50 V, no qualified electrician is required for the electrical installation. The photovoltaic modules are connected to the heating element in parallel. -
Made in Germany
Product development and production from Germany. We are also your direct contact.
Connection plan - 2x photovoltaic modules
In the connection plan shown, 2 photovoltaic modules (optionally more or fewer possible) are simply connected to the photovoltaic heating element.
The heating process begins immediately after the photovoltaic modules are connected. Two or more photovoltaic modules are connected in parallel using photovoltaic parallel plugs . An extension cable connects the photovoltaic modules to the heating rod.
If the output of the photovoltaic modules exceeds the output of the heating element, the heating element regulates the maximum output of the modules down.
Since the entire system operates at protective extra-low voltage, no electrician is required for installation.
Connection plan with surplus feed-in
In this example, excess photovoltaic power is fed into the house grid via a 600 W / 800 W micro PV inverter. The fothermo switching device is required as an energy manager for this.
The switching device detects when the heating element has finished heating the water or when more photovoltaic power is available than the heating element can convert into heat. In these cases, excess energy is fed into the house network.
This means you save not only on hot water costs but also on electricity costs.
Explanatory video: photovoltaic heating rod to support heating
How does the photovoltaic heating element from fothermo work? What connections does it have and how do I combine the heating element with my existing heating system?
Installation and commissioning
The photovoltaic heating element serves as support for an existing heating system.
Assembly Instructions:
1. Check whether you have a 6/4 inch or 1.5 inch screw thread in your existing buffer tank.
2. In order to screw the heating element into the tank, the water must first be drained.
3. Seal and screw in the heating element.
4. Refill the tank with water.
5. Connect the photovoltaic modules. The heating process begins immediately and automatically.