Reliable domestic hot water – all day long!

Vitotrans 300 is a compact, preassembled and self-contained domestic hot water (DHW) heating station, designed to provide large volumes of instantaneous hot water to commercial applications, such as hotels, resorts and recreation complexes, hospitals and industrial facilities.?Vitotrans 300 works seamlessly with any new or existing hydronic heat source to provide a reliable and consistent supply of endless hot water at flow rates of up to 180 GPM.

Save money
Vitotrans 300 eliminates the need for dedicated DHW heating boilers, batteries of direct or indirect-fired DHW tanks, or cascades of tankless water heaters for maximum cost savings.

Save space
The unit's compact footprint (approx. 14 ft.2) makes the Vitotrans 300 an ideal choice for limited-space installations, preserving valuable real estate for other purposes.

In multi-heat exchanger models, each heat exchanger can be individually isolated and serviced without interrupting system operation.

The benefits at a glance

  • High-performance DHW heating unit designed for applications requiring large volumes of hot water (hospitals, resorts, hotels, etc.)
  • Up to 3 integrated brazed plate heat exchangers provide built-in redundancy, eliminating downtime during heat exchanger maintenance.
  • Double wall heat exchanger(s) with leak protection option available (D3HA Series).
  • Easy installation into new or existing hot water heating systems.
  • Compact design and packaged solution for minimum footprint and hassle-free installation.
  • Pre-assembled unit with easy access to all componentry via concealed latched side panels.
  • On-demand design provides consistent flow rate all day long.
  • Sanitation function helps maintain maximum water quality.?
  • BACnet (IP) communication for easy integration into BAS/BMS systems.
  • Integrated de-scaling pump, ultrasonic flow sensor and drip pan.

Where can I buy?Vitotrans 300?

To get a quote for a new Vitotrans 300?DHW unit, please contact a?Viessmann Sales Representative near you. You can find a Sales Representative?in your area?via our?Sales Network.

For design questions and further technical?information,?you may also contact?the?commercial project team at our head office:

Viessmann Manufacturing Company (U.S.)?Inc.
45 Access Road
Warwick, RI?02886

Tel.??? 401-732-0667
Tel.??? 800-288-0667 (Toll-free)
Fax??? 401-732-0590


Product details


Max. DHW flow rate
180 GPM for model S3HA 90 / D3HA 90
Max. DHW supply temperature
Max. operating pressure
150 psig
Application range
For commercial applications requiring high volumes of DHW, such as resorts, recreation and hospitality complexes, and hospitals
Limited 2 year warranty
Additional features
Vitotrans 300 works in conjunction with a heating boiler and employs a plate heat exchanger to quickly and efficiently heat the required domestic hot water – no more need for multiple DHW tanks.
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Product manuals

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CAD drawings

2D and 3D design files in DWG and ADSK format

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Parts catalog

Parts lists and diagrams for the Viessmann product line

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A perfect match?– System technology

"The whole is greater than the sum of its parts." According to this philosophy, Viessmann does not just make individual heating equipment components that meet the high Viessmann standards for quality, reliability and effectiveness. Rather, all products are part of a matching concept, where all components complement one another. Only the perfect interaction of system integrated components draws out the maximum potential of our innovative leading technology.

Viessmann system technology includes everything you need for a reliable and economical heating system. The Vitotronic control unit with remote control, the powerful Vitocell DHW tanks for best DHW convenience, to high-quality solar thermal systems for cost-saving heating.

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