ATTACK DP STANDARD Instructions For Use Manual page 23

Permanent-heat operation
Permanent-heat operation of the boiler means that the fire can be kept during the night without heating up daily,
but only in winter. This way of operation shortens the service life of the boiler. For permanent-heat operation
prepare the boiler this way:
- Put a few bigger logs (4-6)on the glowing layer
- Get the mixing valve ready. After closing the valve the temperature of water rises to 80- 90°C.
- Regulation flap controlled by the thermoregulator is closed automatically and the fan is switched off.
In the boiler prepared like this burning is kept for more than 12 hours. During permanent-heat operation the
temperature of water in the boiler is 80 - 90°C.
Cleaning the boiler
The boiler must be cleaned regularly and properly every 3-5 days because ash settled down in the feed
hopper together with condensates and tar decreases output and service time of the boiler and isolates heat-
exchanging surface. When there is too much ash, there is not enough space for burning out of fuel and a holder of
ceramic jet as well as the whole boiler can be damaged. When cleaning the boiler, firstly turn the ventilator on,
open the feeding door and wipe the ash through a slot into bottom space. Leave long unburnt logs in the feed
hopper. Open the upper cleaning cover and clean inside with a brush. After opening the bottom cleaning hole take
ash and soot out. After opening the bottom door clean the bottom space. Cleaning interval depends on the quality of
wood (moisture content), heating intensity, draft of the flue and other circumstances. We recommend to clean the
boiler once a week. Do not pull the fireclay shaped piece out when cleaning. Once a year minimally clean the
moving wheel of the fan and check through the cleaning hole fouling of regulation of primary and secondary air
flowing into feed chamber and clean with a screwdriver if necessary. It influences the output and quality of
burning. WARNING - Regular and proper cleaning is important for permanent output and service life of the boiler.
In case of insufficient cleaning the boiler can be damaged and guarantee expires.
Maintenance of heating system and boiler
At least once in fortnight check or fill up water in the heating system. If the boiler is out of operation during winter,
water can be frost in the system. Therefore it is better to discharge water of the system or fill in with antifreeze
agent.Otherwise discharge water only in critical situations and for the shortest time possible. After heating season
is finished, clean the boiler thoroughly, replace damaged parts. Twice a year clean the moving wheel of the
ventilator and its air chamber.
Changing the packing cord of the door
Dismantle the old packing cord with a screwdriver and clean the rabbet where it was placed. Take the new packing
cord and put its begining on the horizontal parts of the rabbet. With your hand or light knock of the hammer press it
into the rabbet on the circumference of the door.
Adjustment of hinges
After some time the packing cord in the door gets deformed. To repack the door, it is necessary to change the
position of the door. The position is changed by tightening the hinges of the door. Feeding door and bottom door are
joined to the body with two hinges which are attached to the door with a long pin. If we want to change the
adjustmnent of hinges, it is necessary to remove the pin and screw the hinge by turning it. Fit the door on and insert
the pin into the hinge.
Exchange of the nozzle body
The body of nozzle is placed in the boiler body in a nozzle holder. In the lower part is the nozzle body sealed by
boiler lute and in the upper part by a packing cord. When exchanging the nozzle, remove the packing cord from the
rabbet by a screwdriver. Remove the nozzle body and clean the holder thoroughly from the tar and old lute. On the
cleaned surface put the nozzle body insulation. Take the nozzle and put it on the holder so that the shorter wall was
in the rear part of the boiler pushed to the stop. The lateral clearance must be the same. Take the new set of packing
cords of the nozzles and with a light knock press it into the gap so as to be at the same level with the nozzle.
Setting of the boiler combustion
Setting of the boiler combustion is executing through the regulations flaps of the primary and secondary air.
Boilers are from the production set for the most optimal burning conditions in term of the emissions and the
tempertature of exhaust gas.Setting can be executed only by producer or by trained serviceman.
The most optimal setting of the regulation flaps: :
flap of the primary air:
DP25totally closed /backstop/
DP35 totally closed /bacstop/
DP45 totally closed /backstop/
DP75 backstop +5 mm
DP95 MIN closed position + shift of 1/3 of the range
Prescribed fuel
Specified fuel is dried cut wood and logs of 80-150mm diameter, with min. 12% and max. 20% moisture content
and calorific value of 15 - 17MJkg . It is also possible to burn big pieces of wooden waste with thick logs.
flap of the secondary air::
DP25 backstop + 2 mm
DP35 backstop+2 mm
DP45 backstop +4 mm
DP75 backstop +4 mm
DP95 closed position MAX
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