23
Gasifying boiler VIGAS
Gasification chamber cleaning
It is necessary to remove tar from the gasification chamber once a week. It is
recommended to burn it off with the upper door
and chimney flap open. If there is
extra ash which did not fall through the nozzle (9)pic.3
into the fireclay combustion
this should be removed from time to time. Fuel bunker will be increased to
original size and primary air flow through nozzle will be increased.
14.5 BOILER SERVICING & CLEANING
Wood characteristic table
Wood
Fuel efficiency
[MJ/kg]
20% humidity
Fuel efficiency
[MJ/kg]
25% humidity
Hardness *
weight [kg/m
3
]
25% humidity
Poplar 12,9 12,3 1 530
Fir 15,9 14,0 1 575
Spurce 15,3 13,1 1 575
Willow 16,9 12,8 1 665
Pine 18,4 13,6 1 680
Alder 16,7 12,9 2 640
Birch 15 13,5 2 780
Maple 15 13,6 4 660
Beech 15,5 12,5 4 865
Ashen 15,7 12,7 4 865
Locust 16,3 12,7 4 930
Oak 15,9 13,2 4,5 840
[kg/m
] = [kg/fm], fm – fullmeter, * (1 very soft...5 very hard)
During optimal wood burning and keeping minimum temperature of the reverse water at 60°C will ensure
that the gasifying chamber and exchanger will only slightly soot. Using damp wood may ca
condense on the walls of the combustion chamber, which creates tar on the surface.
ATTENTION
Use only recommended fuel.
It is advise not to overload the boiler with fuel when in temporary period, boiler tar can be
decresed.
When adding fuel, do not load between the flange and the chimney flap, which can cause inaccurate
flap closure.
It is important to lay fuel properly, so it will not stop the upper door from closing. Forcing the door
closed may damage the door‘s concrete innerwall.
It is recommended that only people over 18 years of age should operate the boiler.
It is necessary to clean exchanger pipes once a month using the fire rake (round plate).
Recommendation:
If the exchanger is not cleaned regularly it will become clogged with tar. Do not use a
solvent. The boiler must be cleaned
whilst it is hot! Heat boiler to approx 80°C (without fan) through open
upper door and chimney flap. Then close the flap and door. Using gloves, carefully open exchanger
cover. Clean clogged pipes with relevant accessories. After cleaning, close excha
boiler burn / gasify for approx. 5 hours at maximum performance, in order to get rid of any remaining tar.
Warning: During cleaning the boiler room must be well ventilated!
Combustion chamber cleaning
It is recommended to sweep out ash and dust that has fallen
and settled in the combustion chamber once every 3-5 days.
Humidity dependence period
Number of months after cutting
To Next Page
Loading...
