Modular layered tank / FW modular solar layered tank

Storage volume 850 – 1,500 litres

Tank systems

Modular layered tank / FW modular solar layered tank

Froling’s FW layered tank and new FWM fresh water module are a complete compact solution for the boiler room. The layered tank is available in 1000 and 1400 litre sizes, with or without solar elements. It can be used in combination with the full range of Froling tanks to offer optimal solutions for almost any area of use. The high-performance solar coil ensures that the tank is loaded to full capacity when energy is available from the solar panel system. Thanks to the specially-developed temperature control system TCS, the tank enjoys optimum layering thereby resulting in increased flow rate as a result of the constant hot water areas. The incoming flow of water is decelerated by the TCS and diluted by this slowing down process. This then leads to more consistent temperatures in the hot water areas, resulting in less (primary) energy being used to warm the tank. It also means that lower storage volumes and fewer solar collector areas are required for the hot water supply.


  • Specially developed temperature control system (TCS) for a higher flow rate
  • Less primary energy needed to fill the tank thanks to the TCS
  • Smaller tank capacity and solar collector surfaces required
  • Compact
  • Easy to assemble
  • All internal piping pre-installed
  • Can be combined with the full range of Froling tanks, versatile


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Communicating layered tanks

Thanks to their intelligent measurements, Froling layered tanks can be easily installed in the boiler room. And in rooms with low ceilings, Froling offers even more.

Up to four short slim tanks can be joined together with exact temperature layering in all tanks. Another advantage is the fast and easy assembly with the tanks just 80 mm apart.


The layered tanks can either be set up in a row or at an angle: In this case the connection couplings are fitted to the layered tank in the middle at an angle of 90°.

Brochure / EU Label

Technical documentation

For you personally

Information & advice

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Fröling Heizkessel- und Behälterbau Ges.m.b.H.
Industriestraße 12 | A – 4710 Grieskirchen


Froling is a pioneer in modern wood heating systems. The Froling signature is on many products from the groundbreaking invention of the firewood boiler with high-temperature combustion, from the wood chip burner with Lambda technology to the development of the internationally acclaimed pellet boiler.

A wide variety of well-known international quality awards underscores the ongoing success of the Austrian family company.

Heating with biomass

Heating with wood is convenient, saves on heating costs, is a secure renewable raw material and is also carbon-neutral