Accessories & Co

Fresh-water station

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Accessories & Co

Freshwater station
FWS 35/50 & FWS 35/50-Z

Freshwater station with automatic flow control (PWM high-efficiency pump)

The Hargassner fresh hot water station is used for demand-driven drinking water heating using the flowthrough principle in conjunction with an accumulator tank. The station replaces the storage of hot drinking water in an additional accumulator and thus offers a high level of protection against Legionella by avoiding stagnation water.

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Interesting facts about the freshwater station

Operation

How a freshwater station works

The drinking water is heated to the specified tapping temperature using the through-flow principle. The integrated heat exchanger is always supplied with as little heating water from the accumulator tank as is required to maintain a constant tapping temperature.

The latest PWM pump technology is used. Target value for hot drinking water and circulation are configured using simple menu navigation directly on the Hargassner boiler control panel. The station is available in two output capacities, with or without a circulation pump and with a copper or stainless steel brazed plate heat exchanger.

Installation position

Installation position

Vertically on the wall near the accumulator tank, on a Layered accumulator SP 825/1000 FWS or on one of our other Layered accumulators using the accumulator
mounting plate.

Calcification protection

Calcification protection

  • Heat input (accumulator flow) from underside – no circulation possible
  • Vertical installation position – fast cooling process
  • Controlled primary pump – overheating of the heat exchanger is avoided
Corrosion protection

Corrosion protection

  • A stainless steel heat exchanger with copper brazing is used as standard for water
  • A stainless steel heat exchanger with stainless steel brazing is also available as an option for very aggressive water with high conductivity
Accumulator mounting plate

Accessories - FWS

Accumulator mounting plate
((univ. for all 6/4" connections)

This accumulator mounting plate can be used on any Hargassner accumulator tank from 500 to 2,000 l.

It can be mounted on the left or right side of all upper or middle coupler pairs.

Freshwater station in cascade connection

Accessories - FWS

Freshwater station
in cascade connection

For larger buildings or higher hot water requirements (hotels/industry)
Up to four fresh water stations can be connected in cascade to achieve higher bulk capacities. The scope of delivery includes two, three or four cascade valves and one, two or three bus cables. See the installation manual for instructions on  how to connect fresh-water stations.

This solution is used in buildings or systems with very high hot water requirements (hotels, industry, public buildings, etc.).

Freshwater station