TacoTherm Fresh Mega

Fresh water station for hygienically heating drinking water in accordance with the cyclical principle with and without circulation


  • The TacoTherm Fresh Mega fresh water station is used for heating drinking water on demand in accordance with the cyclical principle in conjunction with a storage tank for existing and new heating systems, solid fuel boilers, heat pumps and solar systems.
  • The station replaces the storage of hot drinking water in an additional storage unit 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 Mega 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 and supplied with ready-to-connect wiring

Efficient (ErP-Ready)

  • Highly efficient system operation owing to the use of high efficiency pumps.


  • Drinking water is heated to the required dispensing temperature in the TacoTherm Fresh Mega in accordance with the cyclical 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.

Technical Data


  • TacoTherm Fresh Mega controller with display
  • Weight (empty): 14 kg
  • Overall dimensions (incl. hood): W 490 mm × H 637 mm × D 181 mm

Primary side

  • Operating temperature TO max: 95 °C
  • Operating pressure PO max: 3 bar
  • Primary pump: Wilo Yonos Para 15/7.5 (3 - 76W)

Secondary side
Modules on secondary side with drinking water certifications

  • Operating temperature TO max: 95 °C
  • Operating pressure PO max: 10 bar
  • Safety valve (intrinsic safety)
  • 10 bar discharge pressure
  • Circulation pump: Wilo Yonos Para Z 15/7.0 RKC 3 - 45W

Electrical connection data

  • Mains voltage: 230 VAC ± 10 %
  • Mains frequency: 50...60 Hz
  • Power consumption: Max. 146 W, 2 AT fuse
  • Protection type: IP 40


  • Designer hood made from EPP
  • Pumps: Cast iron
  • Valve housing: Brass
  • Pipes: DN 18 stainless steel 1.4404
  • Plate heat exchanger:
    • Plates and connector pieces: Rp ¾" OT stainless steel 1.4401
    • Heat exchanger solder: 99.99 % copper
  • Seals: AFM 34, flat sealing

Flow Media

  • Heating water (VDI 2035; SIA Directive 384/1; ONORM H 5195-1)
  • Cold water

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 Mega

Fresh water station with high-efficiency pumps
Order no. DN Rp " Version Equipment
273.5523.000 20 ¾" C with circulation
272.5023.000 20 ¾" without circulation