Fothermo 300 Liter Photovoltaic Boiler

Fothermo 300L Water Boiler (MPN: PVB-300)

Experience cost-effective and environmentally friendly hot water with the Fothermo 300L Water Boiler. This innovative standing boiler uses solar energy to provide you with a CO2-free solution for hot water. It can be easily integrated into existing heating systems and guarantees reliable hot water supply in seconds.

Product Highlights

• 300 liters photovoltaic hot water boiler
• Hot water for sinks, showers, or kitchens
• No connection to the power grid required
• Easy installation without a professional
• Optional reheating via existing heating system
• Integrated heat exchanger
• Three independently operating PV heating rods
• Three MPP trackers for optimal energy distribution
• Plug and Play

The boiler operates with a power of up to 1800W to efficiently heat the water. For cloudy days, you can connect a total photovoltaic capacity of up to 6kWp. Additionally, there's the option to use the existing heating system for reheating. The installation is straightforward and resembles that of conventional standing storage tanks. A vacuum and check valve are included in the delivery and ensure the highest safety.

No Registration Required

Since no electricity is fed directly into the grid, there is no obligation to register the photovoltaic system.

Heat Exchanger

With the integrated heat exchanger, you can connect your existing heating system to obtain additional hot water on days with little sunshine.

Easy Installation

The connection of the photovoltaic modules to the boiler is simple. Thanks to the low voltage and the plug and play principle, you are not reliant on the support of an electrician. Energy transfer occurs via power cables, making the installation significantly simpler compared to complex solar thermal systems.

Payback Period

The payback period is usually 3-5 years. After that, you can enjoy your hot water practically free of charge.

Technical Data

Volume: 300 liters

Max. Heat Losses: 50.2W

Nominal Pressure: 0.8 MPa

Dimensions: 1605 x 670 x 760 mm

Weight: 88kg

Manufacturer's Warranty: 3 years

Heat Exchanger:

• Nominal Pressure: 1 MPa

• Max. Temperature of Heating Fluid: 110°C

• Max. Temperature in Heated Tank: 95°C

• Area: 1.12 m²

• Volume: 5.4 liters

• Continuous Power according to DIN 4708: 35kW

• Flow Rate according to DIN 4708: 14 L/min

• Power according to EN 12897: 19.3kW

• Heating Time according to EN 12897: 39.4 min

• Pressure Drop: 50 mbar

Photovoltaic Heating:

• Max. Current Draw: 16A

• Electrical Nominal Power: 1800W

• Max. Connected Power: 6000Wp

• Max. Connected Power per MPPT: 2000Wp

• Max. Water Temperature: 65°C

• Max. Open Circuit Voltage: 50V

Warning: The open circuit voltage of the solar modules must not exceed 50V. When using multiple modules, they must be connected in parallel, not in series!

Scope of Delivery

• 1x Fothermo 300L PV Boiler
• 1x Non-return & Pressure Relief Valve