Sigma Holzgas, Manual And Installation, Page: 8 / 32

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3) Fuel
9
Wood with humidity up to 25%
9 Chunks dimensions 30-50cm
The wood has to be dry! The efficiency of the boiler falls together with growing
moisture of the wood, settling tartly substances increases and the life of the
boiler drops. Power and proper functioning of the boiler are guaranteed near
maximum moisture the wood to 20%.
The energetic properties of the most popular species of the wood:
Wood type
Thermal efficiency per 1 kg
kcal MJ kWh
Spruce 3900 16,25 4,5
Birch 3750 15,50 4,3
Oak 3600 15,10 4,2
Beech 3450 14,40 4,0
4) Using and Service
4.1) Assembly:
1. Fit the ceramic burner nozzle to the boiler via the rectangular hole located
inside of boiler.
2. Mount the ceramic deflectors into their place inside the lower chamber.
1. 2.
4.2) Burning
Put wood-chips or sawdust as base, then put inside little pieces of wood. At the
top put chunks of wood and set the fire with half-open ash doors and full open
shutter.
After firing close fire-doors and turn on work and adjust required temperature on
regulator.
The attemperation is done with help of the mechanical regulator (shutter) of
fireplace and with help of the electronic automatics mastering the work of fan.