ATTACK DP25 Technical Manual page 2

ATTACK DP - Wood gasifying boiler
- Assembly, pre-heating and training of the attendance is perfomed by an assembly technician
trained by the manufacturer, who also fills in a document on the installation of the boiler
-During wood gasifying, tar and condensates (acids) are created in the fuel bin . Therefore
behind the boiler the mixing appliance regumat or temperature-responsive valve must be
installed, to keep the minimum temperature of return water of 65 °C into the boiler.
- Operation temperature of water in the boiler must be of 80-90°C.
- The boiler must not be permanently operated with the output lower than 50%.
- When a circulation pump is used, it must be controlled by a separated thermostat in order to
keep the prescribed minimum temperature of return water.
- Ecological operation of the boiler is during nominal output.
- We recommend to install the boiler with storage reservoirs and Regumat which guarantees
economy in fuel in 20 až 30% and longer service life of the boiler as well as comfortable
attendance.
- If the boiler cannot be attached to the accumulation, we recommend to connect it at least
with one equalisation basin with the volume of about 25l for 1 kW of the boiler output.
- During the mode with decreased output (summer mode and water heating) it is necessary to
star t burning daily.
- Fuel must be used only dried of 12 - 20% moisture content (with a higher moisture content
of fuel the output of boiler decreases and its consumption increases)
- The choice of the right boiler size, that is its heating output, is a very important condition for
economic operation and right function of the boiler. The boiler must be chosen so that its
nominal output responds to heat loss of the heated object.
The guarantee does not apply for the boiler if:
- it is operated with wood exceeding 20% moisture content or with fuel not prescribed by
the manufacturer.
- If a proper mixing appliance Regumat is not installed in the system, whích provides for
return water the temperature of 65°C.
- a functional thermostatic valve (WATTS STS20) is not installed on the cooling circuit
of boiler and connected to the source of cooling water.
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