PV20a / PV30a pellet burner
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DK9902A1 www.pelltech.eu
THM activates if PAR53 value is more than 1 and BURNING status has lasted longer than set in PAR15
(typically 30min). The burner will change its output power according to currently measured temperature
and the rate of temperature change. New power level is selected after time interval specified in PAR17.
Table 6 External temperature sensor types
PAR53
Sensor type
Temp min
Temp max
Function
0
No sensor
-
-
-
1
0..2.5V
0ºC (0.5V)
125ºC (1.75V)
Burner’s overtemperature sensor (PAR43)
2
0..2.5V
0ºC (0.5V)
125ºC (1.75V)
Boiler’s temperature control
After activating THM, following row is displayed on INFO-screen: „T=22.3/70±5↑30
o
“. It means:
22.3 – Actual measured temperature
o
C
70 – Setpoint temperature (PAR54)
o
C
±5 – Setpoint hysteresis (PAR55)
o
C
↑ - Shows if actual temperature is increasing or decreasing
30
o
– Forecasted temperature after 10min
o
C
4
Operation and service
User
interface
4.1
The burner can be controlled from the front panel on user interface Figure 18. LCD screen (1) displays
main menu, set-up menus, info menu and burner’s actual statuses and them history. Yellow LED (2)
indicates the presence of flame in burning chamber. If yellow LED blinks, the burner is out of normal
operation. Green LED (3) indicates existence of fuel in the burner. Last burner’s status can be seen on
lowest row of STATUS manu. The burner displays two last statuses or error message. To move back in
history of statuses push “up” (↑) button. There are 30 last statuses in burners memory together with
duration in hours, minutes or seconds. To change parameters use “up” or “down” (↑↓) buttons to
enter to desired menu. Confirm entrance with OK. Change with “up” or “down” (↑↓) buttons desired
parameter. To confirm the change, press OK. Press ESC button to go back to STATUS menu.The main
actions of OK and ESC buttons are described in Table 7.
Button
Button’s pressing time
Action
OK
Less than 3 seconds
Entering to sub-menu
Confirming setting (when blinks)
1.
2-row LCD display.
2.
Yellow LED indicates existence of
the flame in the burning chamber.
3.
Green LED indicates existence of
fuel in the burner.
4.
User interface control buttons.
Figure 18 User interface front panel
Table 7 User interface buttons
actions
