ATTACK DP25 Technical Manual page 14

Note
Logs of bigger dimensions is necessary to cut into halves or quarters (because of the
requirement of operation to nominal output). You can burn hard as well as soft wood. Wood
must be dried!
Boiler output depends on the moisture content of wood. Output and function of the boiler
is guaranteed for maximum moisture content of 20%.
Chimney
Attachment of the appliance to the flue must be always done with approval of authorized
chimney-sweeping company. There must always be sufficient draft in the flue and flue gas
must be draught to the atmosphere in all possible operation conditions. For the right operation
of the boiler the independent flue must be dimensioned in the right way,
output and service life of boiler depends on the draught.
section of flue, height and roughness of the internal wall. Into the flue where the boiler is
attached, no other appliance can be attached.
outlet on the boiler.
as not to decrease the efficiency of boiler and interrupt burning. If the draught is too strong,
install a throttle valve between the flue and boiler..
Informative values of flue section:
20 x 20cm
O 20cm
15 x 15cm
O 16cm
Exact dimensions of flue are specified by the standard STN 73 42 10. Flue draught is specified
in technical parameters.
Exhaust pipe
Exhaust pipe must have the outlet into the chimney.If the boiler can not be attached to the
chimney directly, the exhaust pipe must be
without heating surface and it must rise to the flue. Exhaust pipes must be tight and resistant
against flue gas leakage and cleanable from inside. Exhaust pipes must not come through home
and utility spaces and the internal section of the exhaust pipe must not be narrowing to the flue.
Using of bents is not suitable.
Connecting the boiler to the mains net
The boiler is connected to the mains of 230 V, 50 Hz by a supply cord and plug. The voltage is of
M type and when replaced, the same type must be used by a service oragnization.The appliance
must be located in such a way that the plug was within the reach of the attendance.
(according to STN EN 60 335-1 +A11:1997).
Flue draught must have the specified values. But it must not be too high so
The draught is influenced by the
The flue diameter must not be smaller than the
min.height 7m
min. height 8m
min. height 11m
min. height 12m
as short as possible and not longer than 1m
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because combustion,