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Multipurpose large water heater: VT-S 1000 FFM

These units for large hot water requirements cover the wide spectrum from simple multi-purpose storage tanks with two flanges to solar storage tanks with 2 smooth tube heat exchangers. Depending on the unit type and combination, monovalent, bivalent and multivalent energy supply for hot water preparation is possible. We offer an extensive range of accessories to match this storage tank line, which can be individually configured.



Technical data for VT-S 1000 FFM

Type VT-S 1000 FFM
Part No. A 305 11
Capacity (liters)1000
Heat exchanger surface (m²)-
Dimension incl. insulation Height (mm)2350
Dimension incl. insulation Width/Diameter (mm)1000

Product information

  • 10-year warranty on the inner boiler
  • Equipped with the new insulation ECO SKIN 2.0
  • Inner boiler enamelled according to DIN 4753, operating pressure 10 bar (VT-S) resp. 6 bar (VT-N)
  • Smooth tube heat exchanger (for FRM and FRMR), operating pressure 10 bar
  • Large flange opening (diameter 240 mm)
  • 90 mm EPS hard foam insulation or alternatively ECO SKIN insulation 100 mm
  • Can be retrofitted with screw-in heating element, built-in heating or finned tube heat exchanger
  • VT-S including external current anode


All types

Type Part No. Capacity (liters)Heat exchanger surface (m²)Dimension incl. insulation Height (mm)Dimension incl. insulation Width/Diameter (mm)Download
VT-S 800 FFM A 303 11800-20001000
VT-S 800 FRM A 313 228002,7620001000
VT-S 800 FRMR A 313 238002,76+1,220001000
VT-S 1000 FRM A 315 229503,5123501000
VTS 1000 FRMR A 315 239503,51+1,223501000
VT-S 1000 FFM A 305 111000-23501000

Reserve technical changes

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