Vitocell 100-U

Viessmann Water Heater
Vitocell 100-U
Dual-Mode DHW Cylinder

Vitocell 100-U

Steel DHW cylinder with Ceraprotect enamel coating, cylinder capacity: 300 litres.

  • Corrosion-protected cylinder
  • Additional cathodic protection
  • Easy integration of solar systems
  • Quick and straightforward installation

Vitocell 100-U

The Vitocell 100‑U is a dual‑mode domestic hot water cylinder designed for efficient DHW heating using conventional heat generators and solar thermal systems. It comes fully equipped for quick and easy solar integration, making it an ideal solution for modern residential and small commercial applications.
Thanks to integrated components, excellent corrosion protection, and high DHW comfort, the Vitocell 100‑U delivers reliable hot water performance with low heat losses and simplified installation.

Vitocell 100-U

Corrosion‑Protected Steel Cylinder

Manufactured from steel with Ceraprotect enamel coating, ensuring reliable corrosion resistance and long service life.

Additional Cathodic Protection

Fitted with a magnesium anode as standard; an impressed current anode is available as an accessory for reduced maintenance.

Dual‑Mode DHW Heating

Fully prepared for solar thermal integration, enabling efficient DHW heating using both solar collectors and conventional heat generators.

Integrated Solar Components

Key solar components are integrated in a single enclosure attached to the cylinder, enabling quick, clean, and time‑saving installation.

Solar Thermal System Integration

Designed for direct connection to Viessmann solar collector systems for efficient DHW heating.

Hybrid Heating Compatibility

Suitable for integration with:

Gas or oil boilers
Condensing boilers
Hybrid heating systems

Service‑Friendly Hydraulic Layout

Integrated fill valve and pre‑assembled solar components simplify commissioning and maintenance.

Future‑Ready Design

Supports gradual system upgrades, such as expanding solar contribution or upgrading corrosion protection.

Document Name Description Document Type Language Action
Data Sheet Vitocell 100‑U PDF German Download
What does “dual‑mode” mean for the Vitocell 100‑U?

It means the cylinder can heat domestic hot water using both solar energy and a conventional heat generator.

How does the Vitocell 100‑U simplify solar installation?

Solar components are integrated and pre‑assembled, reducing installation time and potential errors.

Is the Vitocell 100‑U energy efficient?

Yes. Excellent insulation and efficient heat transfer result in low standby losses and high energy ratings.

Who should choose the Vitocell 100‑U?

It is ideal for users who want:

Integrated solar DHW heating
Fast installation
High hot water comfort
Reliable, corrosion‑protected DHW storage

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