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The sturdy boiler that lasts and lasts

FKU

Solid fuel boiler

12.7 - 32.6 kW

Solid fuel boiler FKX

FKU

Simple, efficient and reliable

User-friendly operation

  • Easy to load and clean via large filling doors
  • Large filling chamber for sustained slow combustion (with coke)
  • Heating flap is simple to operate from the front

Reasonably priced, efficient in consumption

  • Unbeatable price/performance ratio
  • Efficient use of heat thanks to large coasting surfaces
  • Environmentally sound and economic operation due to the special flue layout

Reliable and safe

  • Proven, ingenious natural draught boiler technology
  • Robust construction with a long-lasting grate
   
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Heat exchanger for thermal process safeguard

Protects the boiler from overheating and follow-on damage.

Controllable secondary air

Secondary air regulation ensures optimum combustion characteristics with all types of wood (beech, spruce,...).

Filling door

Large filling door for easy loading and cleaning.

Heating flap

Quick and easy to heat up when heating flap is actuated.

Combustion controller

Regulates the air supply to attain the desired boiler temperature.

Well-designed to the smallest detail

Heating flap

Quick and easy to heat up when heating flap is actuated.

Combustion controller

Regulates the air supply to attain the desired boiler temperature.

Controllable secondary air

Secondary air regulation ensures optimum combustion characteristics with all types of wood (beech, spruce,...).

Filling door

Large filling door for easy loading and cleaning.

Heat exchanger for thermal process safeguard

Protects the boiler from overheating and follow-on damage.

   

FKU

Technical data

The FKU is available in four different forms. We have provided an overview of the technical data.

Type FKX 155FKX 225FKX 285
Nominal heat output with cokekW14,822,028,5
Fuel filling chamberl578282
Filling openingmm360 x 175360 x 175360 x 175
Boiler weightkg205251256
Depthmm570 x 775 x 1150570 x 775 x 1150570 x 775 x 1150
Room depth requiredmm177519751975
Flue connectionmm150160160
Energy efficiency class

BBB