ATTACK PELH30A, Руководство по посещаемости, Страница: 7 / 32

6
Description of function
NOTE:
PELH30A works only by usage of boiler thermostat or built-in digital
thermostat, resp. with additional room thermostat. In both cases the burner has to be
connected through fuse against boiler overheating.
Normal start-up
When the thermostat gives instruction to burner, ventilator starts and fotocell controls fire.
If there is no fire, comes instruction to blow the burner through. Afterwards, pellets start to
fall into burner during period stated by control system, then is ignition activated.
When is the phase of fuel feeding for ignition finished, control system waits for fire
signalisation from the photocell.
When the photocell recognizes fire, small amounts of pellts fall during transition
period. Duration of it depends on output level set on the burner. Pellet inlet is gradually
increased, until the necessary fuel amount for required output.
This amount is further delivered into burner until operation thermostat gives
instruction to stop.
This signal stops pellet inlet, while ventilator continues to air inlet into burner.
When photocell recognizes burn-out of pellets, the blow-through of burner begins.
According to adjusted delay, after burn-out of fuel is the burner cleaned - grate moves
out towards scraper and ash with unburned elements falls through fron wall of the burner´s
bottom into the ashpan.
After the grate shifted, the burner waits for new signal from thermostat.
NOTE:
unit for grate moving is very strong and it might cause a threat. Never
put any body parts or foreign articles into burner, while it is working.
Normal start-up, when there is still fire in the burner
If the photocell recoginzes fire during beginning phase (e.g. after short-time current
shortage), control system directly begins the transition-phase and pellet burner continues to
operate as by normal start. (see above)
Normal start-up, when control system does not recognize fire
Normal start-up process followas, also when control system does not receive the fire signal.
Shortly after, system begins new start-up try with reduced fuel amount for ignition to cca
45% and it can be reduced within the whole ignition period. These parameters are
adjustable in service menu, only by the trained person. If the second try fails, all functions
are turned off and alarm is turned on. This alarm is indicated on display.
NOTE:
Make sure, that sufficient flue gas temperature was reached. It has to
be at least 60°C - one meter under the chimney top. If is the temperature lower, consult it
with your chineyer. Flue gas temperature lower than 60°C during combustion process
increases risk of chimney damage by condensation.