Operation and Maintenance Manual - EN
EN
www.atmos.cz
EN-5
2. Design
Description
Heating with pellets with the use of the ATMOS A85 pellet burner has a lot in common with
natural gas or oil heating. However, there is a difference that burning of pellets produces a certain
quantity of ashes that must be removed from the burner and boiler in an interval to avoid impairment
of efficiency or affecting the functionality of the burner.
The ATMOS A85 pellet burner is supplied with automatic fuel ignition as standard. The assembly
of the burner, external conveyor and fuel bin work completely automatically during operation and
is controlled by an electronic control unit with the use of a flame sensor (photocell). In the burner
body the fuel and combustion air are supplied in such a way to ensure maximum efficiency and
environment-friendliness of fuel burning.
Normally only high-quality pellets with the diameter of 6 to 8 mm and length of 5 to 25 mm
should be fed into the burner.
Pellets made of soft wood without bark, called white pellets, are
considered as high quality pellets.
Ashes are normally removed from the burner through the open door once every 7 to 30 days as
necessary.
Fly-ash and dirt accumulated in the combustion chamber of the burner and boiler
considerably reduce the service life and output.
For this reason the basic version of ATMOS burner A85 is equipped with pneumatic cleaning
which cleanses the burner’s combustion chamber after every burn out or at regular intervals (factory
setting is 4 hours – parameter S42, S43). Thanks to pneumatic cleaning you can check or clean the
burner’s combustion chamber only once in a fortnight or a month.
It is recommended to thoroughly clean the inner parts of the burner once a year; for this operation
the burner should be removed from the boiler. For ideal cleaning of the combustion chamber (pot) of
the burner you can use a special vacuum cleaner or a poker.
The burner consists of the following parts:
CAUTION
- For the A85 burner DRA50 external shaft conveyors with the length of 1.7, 2.5,
4 and 5 m with the diameter of 80 mm.
1 - End switch
2 - Safety thermostat 95 °C
3 - Display of the burner electronic unit
4 - Combustion chamber (mouth) of the
burner
5 - Socket for the external conveyor
6 - connector for connection of TS, TV, TK and TSV
sensors
7 - connector for interconnection cable between the
boiler and the burner (power cable)
8 - connector for connecting speed sensor of boiler’s
exhaust fan
3
8
5
2
4
1
7 6
Summary of Contents for A85
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