BOILER START-UP
26
The smoke at the chimney must be clear-grey. Black smoke means lack of air supply.
If too much ash and big coal pieces fall down to the ash box reduce the air supply. The flame
is too fast, dry, and might make a noise.
6.8.
Supervision mode
After the boiler has reached the preset temperature, it will enter in SUPERVISION mode. Fan
and feeder work independently and are enabled cyclically for short periods of time in order to
prevent fire from going out and removing cumulated combustible gases from the fire chamber.
6.9.
Stop mode
If the START button is not pressed, the device is by default in STOP mode. At this mode the
device controls only the operation of pumps. Fan and feeder are disabled. Central heating and
HUW pumps operate in accordance with their algorithm. Pumps are enabled if conditions to
commence their operation are met.
6.10.
Chimney damper adjustment
The boiler chimney pipe is equipped with a damper.
This can be set in various positions to throttle the
exhaust gases.
At nominal function of the boiler this damper should
be normally open. Also it should always be at open
position at boiler start-up.
If the chimney draught is too big and the gases are
evacuated too fast, set this damper at a side position
by inserting the positioner at a different hole.
Fig 5.
Chimney damper
