Themafast C30 - F30 - F35

Conventional gas wall hung boiler. Chimney version (C30) and room-sealed version (F 30, F 35)

  • EBus boiler compatible with all modulating room thermostats from the Saunier Duval range
  • A large backlit screen displaying all the heating and domestic hot water information.
  • Aquafast system for faster hot water
  • Interface 1 key per function for the simplest possible use.
  • Easy to install and maintain.

Themafast C30 - F30 - F35 wall hung boiler

The Themafast is a conventional gas boiler easy to use, install and maintain.

It can be integrated anywhere (living rooms or ancillary rooms) thanks to its dimensions and its sleek and discreet design. It uses the eBus protocol for communication with Saunier Duval room thermostats, thus offering additional functions compared to a conventional thermostat: management of periods of absence, domestic hot water production, some parameters and heating comfort.

This device, easy to use and install, meets the most common heating and hot water needs.

It exists in a chimney and room-sealed version.



UnitésC 30F30F35
Heating outputkW10,5 to 28,89,4 to 29,911,2 to 34,1
Flow temperature°C30 to 8030 to 8030 to 80
Expansion vessel volumeL101010
Domestic Hot Water    
Hot water temperature°C35 to 6535 to 6535 to 65
Specific flow rate (DT 30 K - according to EN13203)L/min1414,116,5
Dimensions (H x W x D)mm800 x 440 x 338800 x 440 x 338800 x 440 x 338
Weight (empty)kg364343