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5. Fuel
5.1. Recommended fuel
- the producer recommends to use logs of decidueus trees such as: beech, hornbeam, oak, alder,
birch, ash-tree etc. of the following dimensions of logs or chips: ca. 30 cm long and from 30 cm to 50
cm in circumference and lignite briquette.
- the moisture content of the wood used for ring the appliance should not exceed 20% which corre-
sponds to the wood seasoned for two years after felling, stored under a roof.
5.2. Unrecommended fuel
The appliance should not be red with logs or chips with the moisture content exceeding 20% as it
may result in failure to achieve declared technical parameters - lower caloric value.
It is not recommended to use too small logs or chips to re the appliance as it may result in sudden
increase of water temperature - boiling of water as well as signicant increase of ue gas temperature
and re of the chimney.
It is not recommended to use coniferous or resinous wood logs or chips since they cause excessive
dirt of the appliance and necessity of frequent cleaning of the appliance and the chimney ue.
5.3. Prohibited fuel
It is prohibited to burn in the appliance any waste, particularly chemical one, due the emission of
toxic substances in the process of burning.
6. Working principle
6.1. Fire-up and fuel charge
a) Open the starting damper (13) with a knob (15);
b) Open the door (2) with a bolt (4);
c) Open to the maximum the air throttle with a handle (9);
d) Put some paper or special tinder on the grate (10), place small twigs, than bigger pieces of ca. 3-5
diameter,
e) Ignite the paper and close the door (2),
f ) Once the tinder is red up close the damper (13),
g) When the heat re-up layer (ca. 2cm thick) is ready, ll up the hearth with appropriate fuel. Each
time when you ll up the hearth with fuel remember to do as follows:
- open the starting damper (13),
- set ajar and then open the door (2) gently,
- in needed remove ash and ll the hearth up with fuel, - close the door(2),
- once the fuel is ignited, close the starting damper (13);
h) The desired burning intensity is obtained by controlling the primary air throttle by means of the
handle (9),
i) During the rst few hours of the appliance operation future users are recommended to operate
the replace insert with water jacket at low loads of ca. 30-50% of rated load due to too big thermal
stress that may lead to its excessive use and even cause damage to the appliance.
It is not allowed to pour, soak wood with easily combustible liquids like petrol, fuel oil, solvent etc. or
to add these materials to the hearth to speed up the fuel re-up.
Vapours of these liquids are a strong explosive mixture!!!
6.2. Normal operation of the replace insert with water jacket
To re the replace insert with water jacket use the logs or chips of deciduous trees of the following
dimensions: ca. 30 cm long and from 30 cm to 50 cm in circumference or lignite briquette.
To achieve the rated thermal power of the replace insert with water jacket ll up the hearth with 4-5
wood logs and uncover completely the air throttle (9).
To achieve the thermal power that is lower than the rated power ll up the hearth with 3-5 bigger
wood logs and cover the air throttle (9) as needed.
6.3. Operation with minimum power in extended time
The replace insert with water jacket may operate with minimum thermal power and the burning
