DK9802C2 PV50c user manual ENG
Vers: C2 page23/38
changed in PAR12.
If HOLD FLAME is set to AUTO in main menu, then HOLD FLAME will be activated if
two sequential
WAITING times have been shorter than set in PAR11. The length of state in this situation is
with PAR12.
Menu
PELLETS
enables to select between 3 pre-set fuel quality options. Depending on fuel quality, the
weight of pellets and its caloric value may differ in same volume. Normal weight for pellets is 650...670
kg/m
3
. If pellets density is smaller i.e they are lighter (less than 600 g/l), then with one rotation less pellets
will be delivered into burning chamber. Such mistake may to be compensated by selecting LIGHT from
PELLETS menu. Now burner delivers more pellets into burning chamber. If pellets are heavier than normal
(more than 700g/l) HEAVY has to be selected in PELLETS menu. Now burner delivers fewer pellets into
burning chamber. In general case there is no need to make changes in PELLETS menu.
Notice:
Weight of
pellets can be manually changed in PAR21…PAR23.
Menu
POWER
determines caloric productivity of burner in kilowatts. Power is calculated by reading the
rotations of the feeder auger, taking into account average caloric value of 1kg of pellets. It is possible to
pre-set particular power level value or AUTO - automatically selected value. In AUTO status burner selects
necessary power level depending on time when is needed to achieve pre-set temperature. Burner
changes its capacity that is determined by parameters MIN POWER (PAR13) and MAX POWER (PAR14). If
burner cannot achieve pre-set temperature in certain time (PAR15) it will rise its power automatically one
level up and continues rising power up until reaching maximum level (PAR14) or boiler has achieved pre-
set temperature. If boiler achieves pre-set temperature faster than set in PAR16 burner will work one
power level lower in next cycle. Power will be reduced as long as burner has reached minimal power level
(PAR13).
Menu
BASE AIR
increases or decreases speed of fans in all power levels by same number of rotations
according actual need for combustion air.
Menu
LANGUAGE
enables user to select between 17 different languages.
Menu
PARAMETERS
gives overview of burner’s default, min and max settings. The menu
enables fine
tuning of the particular burner. Short description of parameters is given in “DK0391 - Software and
problem handling manual for PV20…PV500”.
7.7
Regular maintenance
Pellet burner PV50c needs regular maintenance. The frequency of it depends on quality of pellets and
intensity of heating. Average frequency is once a month or after every 2 months. Despite burner has ash
removing system, the ash collects under and on the grates. Depending on pellets quality the maintenance
frequency may vary.
Notice!
The power screw of lower grate has to be cleaned and lubricated once a year.
To clean the burning chamber:
1.
Turn the burner off by turning boilers thermostat to zero or switching from main menu BURNER to
OFF.
2.
Let the burner cool down for one hour.
3.
Open boiler door.
4.
Remove ash from up side of grates.
5.
Remove grates and clean them. Make sure that all the holes in grates are clean.
