TacoTherm Fresh Tera

Fresh hot water station for hygienically heating drinking water in accordance with the continuous flow principle with and without dual-zone return stratification of the storage tank.


The TacoTherm Fresh Tera C/CL fresh water station is used for on-demand preparation of domestic hot water in accordance with the continuous flow principle. It retrieves the heat from the storage tank of an existing or new heating system, which uses solid-fuel boilers, heat pumps, solar systems, etc. as a heat source. The station replaces the storage of hot drinking water and thus provides a high degree of protection against Legionella by avoiding water stagnation.



  • Equipped with all the necessary valves and components, ideally complements the TacoSol Load Tera storage loading station


  • Intrinsic safety of the system thanks to an integrated safety subassembly, protection against Legionella by avoiding water stagnation


  • Station is fully preassembled with ready-to-connect wiring


  • Highly efficient system operation owing to the use of HE pumps and stable storage tank stratification


  • Drinking water is heated to the defined dispensing temperature in the TacoTherm Fresh Tera in accordance with the continuous flow principle. The integrated heat exchanger is supplied with as little hot water from the storage tank as is required to maintain a constant dispensing temperature.
  • A low return temperature of the heating water to the storage tank can be expected owing to the special design of the heat exchanger. In recording the temperature difference and flow rate data, the electronic regulator simultaneously records and stores the quantity of heat consumed.
  • The TacoTherm Fresh Tera can be supplied optionally with a switching valve for storage stratification. This pump and also the load valve are controlled by the integrated regulation system by means of a separate program.

Technical Data


  • TacoTherm Fresh Tera controller with display
  • Weight (empty): 25 kg
  • Overall dimensions (incl. hood): W 656 mm × H 930 mm × D 197 mm

Primary side

  • Operating temperature TO max: 95 °C
  • Operating pressure PO max: 3 bar
  • Primary pump: Wilo Yonos Para 15/7.5

Secondary side
Modules on secondary side with drinking water certifications

  • Operating temperature TO max: 95 °C
  • Operating pressure PO max: 9 bar
  • Safety valve (intrinsic safety)
  • 10 bar discharge pressure
  • Circulation pump: Yonos PARA Z 15/7.0 RKC

Electrical connection data

  • Mains voltage: 230 VAC ± 10 %
  • Mains frequency: 50...60 Hz
  • Power consumption: max. 100W, 2 AT fuse
  • Protection type: IP 40


  • Design hood made from EPP with plastic surround
  • Pumps:
    • Primary: Cast iron
    • Secondary: Brass (resistant to dezincification)
  • Valve housing: Brass
  • Pipes: DN 20 stainless steel 1.4403
  • Plate heat exchanger:
    • Plates and connector pieces: Stainless steel 1.4401
    • Heat exchanger solder: 99.99 % copper
  • Seals: AFM flush seal

Flow Media

  • Heating water (VDI 2035; SWKI BT 102-01; ÖNORM H 5195–1)
  • Cooling water (DIN 1988-7)

Building categories

  • Apartments, apartment blocks
  • Single family homes, housing estates
  • Multiple dwelling units
  • Residential care facilities and hospitals
  • Administration and service buildings
  • Hotels and restaurants, industrial kitchens
  • School buildings and sports facilities
  • Commercial and industrial buildings, industrial facilities
  • Facilities with partial use – for example barracks, camping sites, etc.

Type Overview

TacoTherm Fresh Tera (TacoTherm Fresh HE)

Fresh water station with high-efficiency pumps
Order no. DN Rp " Version Equipment
273.5524.000 20 1 C without dual-zone return stratification
273.5525.000 20 1 CL with dual-zone return stratification