Instruction manual
26 
is guaranteed for maximum moisture content of  20%. Guarantee expires at boiler operation with 
cut wood with humidity over 20%. 
Energy content of mostly used kinds of wood 
Wood  Thermal capacity per1 kg    
  kcal  MJ  kWh 
Spruce  3900   16,25   4,5  
Pine  3800   15,80   4,4  
Birch  3750   15,50   4,3  
Oak  3600   15,10   4,2  
Beech  3450   14,40   4,0  
Assembly and installation of the boiler  
Boiler installation 
Boiler can be installed only by person with valid  certificate for installation and assembly of heat 
technology  devices.  The  project  in  conformity  with  valid  prescriptions  has  to  be  made  out  for 
installation. Before installation of boiler, the assembly worker  has  to check all data given in  the 
production label for their conformity with data in the project and attached documentation. Boiler 
connection has to be in conformity with valid prescriptions, norms, regulations and this manual for 
attendance. 
Producer  is  not  responsible  for  damages  caused  by  faulty  connection,  respectively  by 
incorrect operation. 
Placing of boiler 
Boiler is designed for installation and operation in the premises with basic enviroment (AA5/AB5) 
under STN 33 2000-3. For the installation it is necessary to keep safe distance of its surface from 
flammable materials by the degree of flammability and combustibility: 
- from materials of flammability B, C1 a C2          200mm 
- from materials of flammability C3            400mm 
- from materials with degree of flammability not tested by STN 73 0853   400mm 
Examples of building material devided by the degree of flammability: 
- degree A non-combustible (bricks, blocks,ceramic linings, morter, plaster) 
- degree B partially flammable (heraklith, lignos, boards from bazalt felt) 
- degree C1 very difficult to ignite (broadleaves - beech, oak; plywood, werzalit, hard paper) 
- degree C2 intermediate flammable (coniferous species -wood, pine, spruce pulpboard, solodur) 
- degree C3 easy flammable (wood pulpboards, polyurethane, PVC, foam rubber, styrofoam) 
Non-combustible board or protecting fire- screen ( on the protected subject) must exceed the boiler 
dimensions for at least 300mm. All the other subjects  from combustible materials,  which are 
situated  near  the boiler,  have  to be  protected  by  non-combustible  board  or  fire-screen,  if  it  is 
impossible to keep the safe distance. 
If the boiler is located on the floor from combustible materials, the floor must be covered with the 
non-combustible, thermal insulating pad exceeding the boiler planview for at least 100mm on the 
side with feeding door and ash door . All the solid materials of  "A" degree of combustibility can be 
used as a fireproof thermal insulation. 
If the boiler is placed in the boiler room, there must be a free space of min.1 meter in front of the 
boiler and of 0,5m from the side walls and from the rear side. Above the boiler there must be a free 










