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28-GB
Operation and Maintenance Manual - GB
21. Commissioning
CAUTION
- The system may only be put in operation if the burner is connected to the boi-
ler, the boiler to a chimney with sufficient draught via a flue gas duct and in the fuel bin there
is a sufficient quantity of pellets of the corresponding quality.
Pellets made of soft wood
without bark, i.e. white pellets with the diameter of 6 to 8 mm and length of 5 to 25
mm are considered as high-quality pellets. These pellets do not cake. Burning of dark
pellets or pellets with bark that contain visible dark dots produces cake that must be
removed from the burner mouth once a day. Otherwise the combustion chamber and
the feeding hose from the conveyor will get clogged.
INFO
- The pellets have to be stored in dry and clean containers (areas). When filling
the fuel bin, the pellets
must not be contaminated by foreign objects
that could cause a
blockage of the conveyor
or have an impact on the burning process.
Requirements for the external conveyor and pellet bin at the first start of the burner:
•
The worm conveyor must be positioned in the bin in such a way to be able to easily pick up pellets.
In the case of a fuel bin whose pellet level will be higher than 2 metres a roof will have to be in-
stalled over the conveyor to prevent blocking of the conveyor. Blocking of the conveyor is caused
by dust in the pellets in combination with high pressure caused by the height of the pellet level.
ATMOS 250, 500 and 1000 l pellet bins do not require the installation of the roof.
•
The hose between the burner and conveyor must be tensioned, properly fixed and must have such
an inclination to enable trouble-free falling of pellets to the burner.
•
The connector of the work conveyor must be plugged into the socket on the burner.
Procedure of drawing pellets to the conveyor
•
Plug the connector of the external worm conveyor to a standard wall socket. As soon as the first
pellets get over the top point and start to fall to the burner via the elastic hose, plug the connector
of the external worm conveyor back into the socket on the burner.
Normal operation:
•
On the control thermostat on the boiler panel set the required operation temperature of 80 - 90 °C
and turn on the switch of the burner located on the boiler panel and the main switch. For boilers
with a built-in burner in the upper doors reduce the combustion thermoregulator for heating.
The STARTup mechanism consists of the following steps:
• At the start the
worm conveyor and the ignition spiral are started
(the fan on the burner is stopped).
• The worm conveyor will run for the time set by
parameter T1
, necessary for the delivery of the
amount for pellets for optimum ignition. After the delivery of the ignition amount of fuel the
worm conveyor will stop.
The burner fan will be started
at the ignition speed -
parameter S2 as
well as the extraction fan (if the boiler is equipped with one and is set accordingly – reserve
R and parameter S6).
