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FRIWA 31

Fresh water module

30 l/min

Product teaser image of FRIWA 31

FRIWA 31

Convenient and variable use

  • Fresh hot water in the required quantity without waiting
  • Space-saving because of compact design and possibility of installation directly on AccuWIN Solar buffer tank
  • Hot water temperature can be selected
  • Can either be mounted on the wall or directly on the AccuWIN Solar buffer tank

Efficient

  • Large draw-off amount due to large heat exchanger
  • No losses resulting from down-time of a hot water storage tank as hot water is only produced on demand
  • No mixing of the buffer tank due to low return temperatures

Reliable and safe

  • Avoidance of bacteria growth due to hot water preparation using the flash heating principle
  • Intelligent block design results in few wearing parts
   
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Water switch

When hot water is drawn off, this is activated and switches on the feed pump to heat domestic water.

Feed pump (primary side)

Removes the hot heating water from the buffer tank and transports the cold return back to the tank.

Push-in connection for circulation unit

Simple connection option for an optional circulation pump.

Plate heat exchanger

Copper-soldered plate heat exchanger for optimum transmission values.

Electrical box

There is space for all the electrical connections needed in the splash-protected electrical box.

Thermostat head

If required, the thermostat head can be used to set the hot water temperature desired.

FRIWA 31

Well-designed to the smallest detail

Plate heat exchanger

Copper-soldered plate heat exchanger for optimum transmission values.

Thermostat head

If required, the thermostat head can be used to set the hot water temperature desired.

Feed pump (primary side)

Removes the hot heating water from the buffer tank and transports the cold return back to the tank.

Electrical box

There is space for all the electrical connections needed in the splash-protected electrical box.

Water switch

When hot water is drawn off, this is activated and switches on the feed pump to heat domestic water.

Push-in connection for circulation unit

Simple connection option for an optional circulation pump.

   

FRIWA 31

Method of operation

Thanks to patented temperature control, the fresh water unit guarantees permanently fresh and hot water of the required volume at a constant temperature, without waiting.

Functional description

If a tap is opened in the house, the water switch activates the feed pump. This transports the hot buffer tank water to the heat exchanger where the cold water is heated to the set hot water temperature. Mixing via the mixer circuit ensures that the hot water exits the system at a constant temperature. This setup also ensures that only as much hot water is removed from the buffer tank as is needed and that the return to the buffer tank is as cold as possible.

Once the amount of hot water needed is covered (tap is closed again), the feed pump is switched off again. Hot water is therefore provided to suit demand and any losses resulting from down-time of a hot water storage tank or the formation of legionella bacteria in the tank are not possible.

   

FRIWA 31

Technical data

Type Fresh water module FRIWA 31
Dimensions (W x H x D)mm400 x 820 x 290
Weightkg20
Draw-off ratel/min30
Cold water connectionsInt. thr.1 ''
Hot water connectionsInt. thr.1 ''
Connections from bufferExt. thr.1 ''
Connections to bufferExt. thr.1 ''
Power consumption of pumpW95
Electrical connectionV230
Circulation connection possible
Area of use 1 - 3 families