100-liter domestic hot water storage tank with integrated OWR1 3 kW heating element – ​​compact hot water solution

Product description Hot water storage tank

The 100-liter ETWS domestic hot water storage tank is designed for the central and reliable heating of domestic hot water. A highly efficient heat exchanger transfers heat from solar thermal systems or a boiler into the drinking water, while the high-quality enamel coating and a large magnesium sacrificial anode ensure internal corrosion protection.

The rigid polyurethane foam insulation reduces heat loss and ensures good energy storage. Optionally, a 1 1/2" Electric heating elements can be retrofitted or combined to enable heating, e.g., via a photovoltaic-supported electric heating system.

Advantages of the 100-liter storage tank

The unit offers an attractive price-performance ratio and high hot water comfort for a typical demand of 100–180 liters. The integrated heat exchanger operates very efficiently, a circulation connection is provided, and connections for the heating circuit and domestic hot water are standardized.

Corrosion protection through enamel and magnesium anode, as well as robust insulation, ensure a long service life. Compatibility with solid fuel, pellet, and combination boilers, as well as solar thermal systems, makes the storage tank versatile.

Technical data for hot water storage tanks

Volume 100 l; Heat exchanger surface area 1.2 m²; Heat exchanger capacity 5.27 l; Connections flow/return heating 3/4" AG; Connections for domestic water and circulation 3/4" AG; Magnesium anode connection 1 1/4" IG; Connection for electric heating 1 1/2" IG.

Thermal insulation: PUR foam; max. operating temperature storage tank 95 °C, heat exchanger 100 °C; max. operating pressure storage tank/heat exchanger 6 bar; heat loss 28 W; dimensions incl. insulation Ø 625 x H 770 mm; empty weight 64 kg.

Product overview OWR1 heating element 3 kW

The OWR1 is a compact electric immersion heater with a power output of 3.0 kW at 230 V, designed for the direct heating of domestic hot water storage tanks, boilers, and buffer tanks. The 1 1/2" The connection thread and the installation length of 360 mm allow for easy integration into many standard containers.

The heating element features an externally adjustable temperature control and an integrated safety temperature limiter for additional overheat protection. It comes complete with a pre-installed Schuko plug for easy electrical connection.

Technical data heating element

Power output 3.0 kW; voltage supply 230 V; connection thread 1 1/2" AG; Installation length 360 mm; Installation type horizontal; Adjustable from approx. 20 °C to approx. 70 °C; Safety temperature limiter 85 °C; Supplied with Schuko plug.

Assembly and safety

The heating element is positioned horizontally across the 1 1/2" The threaded connection is screwed into the storage tank; before installation, the power supply must be switched off and the sealing surfaces checked. The externally mounted controller allows for convenient adjustments, and the safety temperature limiter prevents overheating.

It is recommended to follow the installation instructions and consult a qualified electrician if you have any questions. Regular visual inspections and checks of seals and electrical fuses will extend the service life and increase operational safety.

Areas of application and combinations

The combination of a 100-liter storage tank and OWR1 heating element is suitable for private households as well as smaller commercial applications, either as a complete solution or as a supplement to existing systems. The storage tank can be operated with solar thermal systems, solid fuel and pellet boilers, as well as combination boilers, and the electric auxiliary heater enables flexible operating modes, for example in conjunction with photovoltaics.

Scope of delivery and service information

The delivery includes the ETWS hot water storage tank (100 l), the OWR1 3 kW heating element with pre-installed Schuko plug, and the respective installation and operating instructions (please check the product offer). Before commissioning, the system must be professionally connected and the fuses must be properly protected.

Technical data

Technical data for hot water storage tanks

• 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)
• Max. operating temperature storage 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 heating element

• External regulator from ~20°C until ~ approx. 70°C adjustable
• Connection thread: 1 1/2" AG
• Installation type: horizontal.
• Safety temperature limiter: 85°C
• Power: 3.0 kW
• Power supply: 230V
• Installation length: 360 mm
• Easy handling and assembly
• with Schuko plug
  

Scope of delivery

• Drinking water storage tank 100 liters
• Heating element 3 kW with 1 1/2" AG
• Operating instructions & Assembly instructions

Download

• Operating instructions for hot water storage tank