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10.
Fast wearing parts during boiler operation
Sealing parts from glass fiber; cast iron fire grates (
29
) and door (
3
); refractory
concrete bricks (
20
) can become worn, burn out, disintegrate while in use.
These parts are available for purchase at boiler manufacturer or its agents.
Note. It is advisable to use only manufacturer’s original spare parts.
11.
Fuel types and their properties
Combustion heat of absolutely dry wood actually doesn’t depend on wood spice
and is equal about 4500 kcal/kg. So, as to assess different wood species, one should
take into consideration their comparative weight. Weight per cubic meter of various
firewood species is as follows:
- oak firewood
- 500 kg;
- birch firewood
- 450 kg;
- fir firewood
- 330 kg;
- aspen firewood
- 330 kg.
The damper is firewood the less is its caloric content. Wet firewood caloricity
reduction, compared with dry firewood (dampness ~20 %) is as follows:
- 30 % moisture
- 10
15 %;
- 50 % moisture
- 35
40 %.
Just cut tree contains 35
60 % water. Tree cut in the beginning of winter contains
least quantity of water. Hardwood contains less water.
Wood has to be cut and split to make firewood. Firewood, after one year spent in
garret is of 20
25 % moisture.
After two years it is 13
17 %, and this means that after drying less fuel is needed
than combustion with damp firewood.
Equal weight of firewood and peat give similar heat quantity.
1 kg of coal gives 2
3 times more heat than 1 kg of firewood, due to this reason;
coal change into hearth should not exceed 10 kg.
Volume of air needed to combust 1 kg of firewood is 4
5 m
3
, for coal –10 m
3
.
The poorer quality is fuel, the more ash it generates.
Combustion of 1 kg average caloricity coal gives about 6500 kcal (7,56 kWh).
12.
Scope of delivery
1. Boiler "
Kalvis-2-70
"
- 1 pcs.
2. Air draught regulator
- 1 pcs.
3. Scraper
- 1 pcs.
4. Ash removal scoop
- 1 pcs.
5. Poker
- 1 pcs.
6. Boiler technical passport
- 1 pcs.
7. Wooden pallet for transportation
- 1 pcs.
Notice. Security valve, cooling coil with temperature valve are not included into the
scope of delivery - to be purchased separately.
Summary of Contents for K-2-70
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