Australia
New Zealand
Greece
Freshwater module for DHW heating using the instantaneous water heating principle, draw-off rate up to 68 l/min depending on model
The Vitotrans 353 is a high‑performance fresh water module designed for hygienic domestic hot water (DHW) heating according to the instantaneous water heater principle. It delivers fresh hot water on demand—without storing drinking water—making it ideal for residential and commercial applications with high hygiene requirements.
Thanks to its high draw‑off capacity, compact design, and easy mounting options, the Vitotrans 353 integrates seamlessly with heating water buffer cylinders, especially in solar thermal and low‑temperature heating systems.
The built‑in control automatically regulates DHW temperature and flow for stable, comfortable operation.
Optimised for use with Viessmann heating water buffer tanks, enabling efficient decoupling of heat generation and DHW demand.
Particularly suitable for integration with:
Solar thermal systems
Heat pumps
Biomass boilers
Hybrid heating systems
Cascade capability allows straightforward expansion to meet higher or growing hot water demand.
| Document Name | Description | Document Type | Language | Action |
|---|---|---|---|---|
| Operating Instructions | Control unit for Vitotrans 353 | English | Download |
Yes. It operates efficiently with low flow temperatures, making it ideal for heat pumps and solar systems.
Yes. Its high draw‑off capacity and cascade capability make it suitable for larger or variable demands.
Yes. The instantaneous heating principle reduces stagnation, helping minimise limescale and bacterial growth.
It is ideal for users who want:
Hygienic DHW preparation
Compatibility with renewables
Scalable hot water capacity
Compact, efficient system design
Fresh water module for hot water heating according to the principle of instant water heating
Get directed to our Business Development team to start the authorization process and discuss sales support.
Get specialized help with system sizing, load
calculation analysis, and technical data required for project design.
Request support for warranty claims,
scheduled maintenance, and genuine spare
parts ordering.
For more information : ahi@ahi-carrier.com