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Combined heating with wood and pellets

DuoWIN

Hybrid technology for small and large homes

4,3 - 30 kW

Combined heating DuoWIN

DuoWIN - Hybrid technology

Combined heating with wood and pellets

The DuoWIN offers an intelligent combination of the heating benefits of two biomass technologies. This hybrid boiler unites inexpensive split-log heating with the convenience of heating with pellets in a single device. For a quick blast of extra warmth, the PowerBoost function sees the split-log and pellet units heat up at the same time for an output of up to 56 kW. With the DuoWIN, pellets can either be fed in manually or automatically. What’s more, the DuoWIN pellet unit can even be retrofitted further down the line with the pellet-ready model of the LogWIN Klassik split-log gasification boiler.


  • Up to 25 per cent more efficient when using pellets
  • PowerBoost function for peak performance
  • pellet ready - pellet unit can be retrofitted
        
   
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Individual Pellet Feed

The DuoWIN can be equipped with either a manual or fully automatic pellet feed.

Two Separate Heat Exchangers

Both independent heat exchanger systems guarantee maximum security. The wood combustion chamber and the stainless steel pellet burner are not considered wearing parts and are included in the guarantee.

Wear-free Ignition Elements

The DuoWIN's ignition elements ignite silently, and are very robust and maintenance-free. They are also not considered wearing parts, and are included in a guarantee for up to 5 years.

More Power or More Efficience

The DuoWIN is available as either a comfort or an energy optimised variant: the PowerBoost function enables short term higher heat demands up to 56kW. Thanks to the EnergySaver, the DuoWIN's pellet operation is up to 25 % more efficient than conventional combination boilers.

Intelligent Fuel Switching

The hybrid boiler's automatic fuel changeover detects if the wood gasifier is in burnout. If there is too little energy available in the boiler or heat exchanger, the unit will change to pellet operation either automatically or after an individually adjustable time.

DuoWIN

Satisfaction in every detail

Intelligent fuel switching

The hybrid boiler's automatic fuel changeover detects if the wood gasifier is in burnout. If there is too little energy available in the boiler or heat exchanger, the unit will change to pellet operation either automatically or after an individually adjustable time.

Individual pellet feed

The DuoWIN can be equipped with either a manual or fully automatic pellet feed. 

Two separate heat exchangers

Both independent heat exchanger systems guarantee maximum security. The wood combustion chamber and the stainless steel pellet burner are not considered wearing parts and are included in the guarantee.

More power or more efficience

The DuoWIN is available as either a comfort or an energy optimised variant: the PowerBoost function enables short term higher heat demands up to 56 kW. Thanks to the EnergySaver, the DuoWIN's pellet operation is up to 25 % more efficient than conventional combination boilers.

Wear-free ignition elements

The DuoWIN's ignition elements ignite silently, and are very robust and maintenance-free. They are also not considered wearing parts, and are included in a guarantee for up to 5 years.


   

DuoWIN

The fully automatic pellet feed

 

The fully automatic suction system transports pellets especially gently to the DuoWIN. Whether storage room or tank, we have the appropriate system for every storage option.

Advantages:

  • Optimum security with up to eight separate removal points (suction probes) in the storage room.
  • Location of the storage room is independent of the boiler room.
  • Maintenance-free system
  • No moving parts or electrical wiring required in the storage room.
  • Fully automatic functions controls

More information on pellet storage can be found here.

   

DuoWIN

Technical data

The DuoWIN is available in four different characteristic forms. An overview of the technical data is provided here.

Type DW K18 K(P)15DW K25 K(P)21DW K25 K(P)26DW K 30 K(P)26
Rated thermal output range
WoodkW15 - 1815 - 2515 - 2515 - 30
PelletskW4,3 - 156,3 - 217,6 - 267,6 - 26
Boiler efficiency at nominal load
Wood%
90,9
90,7**
90,7**
90,5
Pellets%
93,893,9**93,9**93,9
Filling volume
WoodLiter
145
PelletsLiter
164 (108*)
Installation dimensions H x W x D
Woodmm
588 x 967 x 1340
Pelletsmm
714 x 720 (650****) x 1146
Minimum transport weight
Woodkg430
Pelletskg221 (200****)
Boiler dimensions
H x W x D
mm1.393 x 1.100 x 1.492 (1.705*)
Boiler weight (incl. cladding and hang-on parts)
Woodkg570
Pelletskg247-283***
Flue gas connection diametermm130
Power consumption at nominal load 
WoodW4349**49**53
PelletsW3341**4848
Energy efficiency category
A+

* DuoWIN height with fully automatic pellet feed

** Interpolated from two values

*** The actual weight depends on the model and can be somewhat reduced during transportation into the installation room by removing flexible parts

****Valid for DWK18 K15 amd DWK18 P15