Hot water with photovoltaic heating element

Hot water powered by PV solar electricity

How it works:

1. Surplus electricity:
The photovoltaic system often generates more electricity than is directly consumed in the household, especially in sunshine.

2. Heating element:
Excess electricity is directed to a heating element in the hot water storage tank.

3. Heat conversion:
The heating element converts the electricity into heat and warms the water in the storage tank.

100-liter hot water storage tank ETWS

The hot water storage tank The 100-liter ETWS combines state-of-the-art technology with high reliability for central hot water preparation. A highly efficient heat exchanger with a surface area of ​​1.2 m² utilizes the thermal energy from your solar thermal system or boiler and heats up to 180 liters of domestic hot water comfortably and economically.

A high-quality enamel coating inside the storage tank, complemented by a generously sized magnesium anode, ensures long-lasting corrosion protection. Thanks to the integrated polyurethane insulation, heat loss remains low (only 28 W power dissipation) and the temperature is maintained up to a maximum of 95 °C.

High-performance bifacial PV solar module Trina Vertex S+

The Trina Vertex S+ module delivers a peak output of up to 435 Wp and achieves one of the best efficiencies on the market at 21.8%. Thanks to its bifacial double-glass design, both front and backlighting are effectively utilized, increasing energy yield by up to 85%.

The robust construction, with a compressive strength of 5,400 Pa at the front and 4,000 Pa at the rear, ensures maximum resistance to hail, snow, and wind pressure. Measuring 1,762 mm in length, 1,134 mm in width, and weighing 21.8 kg, the module is versatile and suitable for use on residential and commercial roofs.

1.5 kW heating element for reliable support

The 1.5 kW electric heating element Made of high-quality stainless steel, it allows for precise temperature control between 5 °C and 75 °C thanks to an integrated thermostat. A switch-on hysteresis of 7–10 °C ensures stable temperature values ​​and minimizes switching cycles.

With its frost protection function and a safety temperature limiter at 93 °C, the heating element can be used safely even on cold days. Its compact installation length of 300 mm, IPX4 protection rating, and an operating pressure of up to 10 bar make it the ideal addition for... Hot water storage tanks and PV solar systems.

Technical data

Technical specifications 100 liter hot water storage tank

• Volume: 100 liters
• Heat exchanger surface area: 1.2 m²
• Heat exchanger capacity: 5.27 liters
• Heating flow and return connections: 3/4" AG
• Domestic hot water supply and return connections: 3/4" AG
• Circulation connection: 3/4" AG
• Magnesium anode connection: 1 1/4" IG
• Connection for electric heating: 1 1/2" IG
• Thermal insulation: Polyurethane foam (PUR)
• Maximum operating temperature of storage tank: 95 °C
• Maximum operating pressure of storage tank/heat exchanger: 6 bar
• Max. operating temperature heat exchanger 100 °C
• Loss: 28 watts
• Dimensions with insulation (diameter x height): 625 x 770 mm
• Weight (empty): 64 kg

Technical data of the heating element at a glance

• Heating output: 1.5 kW
• Temperature range: 5-75°C
• Switch-on hysteresis: 7-10°C
• Installation length: 300 mm
• Unheated length: 70 mm
• Safety temperature limiter: 93°C
• Connection: 1 1/2" male thread
• Max.Operating pressure: 10 bar
• Protection rating: IPX4
• Heating coil material: Alloy 825
• Housing material: plastic, white
• Power supply: 230V/16A, single-phase
• Connection cable: 1.5 meters with Schuko plug

Technical data module

• Module efficiency: 21.8%
• Number of cells: 144
• Cell type: monocrystalline
• Technology: bifacial
• Cable length: 1,100 mm (+)/1,100 mm (-)
• Connector system: MC4-EVO2
• Frame color: black
• Frame height: 30 mm
• Module width: 1,134 mm
• Module length: 1,762 mm
• Weight: 21.8 kg
• Pressure load front side: 5,400 Pa
• Pressure resistance (reverse side): 4,000 Pa
• Power tolerance (positive): 0 - 5 Wp

Scope of delivery

• 1 x hot water storage tank 100 liters
• 1 x heating element 1.5 kW
• 4 x PV panels 435 WP Bifacial Black Frame
• 1 x Hoymiles 1600 W inverter
• 1 x PV connection cable 10 m
• 1 x DTU WLAN Stick

Download

• Operating instructions for drinking water storage tank
• Operating instructions for heating element
• Trina Vertex S+ datasheet