37
Putting the burner out of operation
•
The burner is put out of operation by pressing "START OF BURNER" button (signalling of "START" on
the body of the burner is off). The burner during becoming extinct performs so called "process of
controlled switching off" during which the fan keeps working (and the burner gradually is cooled down)
and the operating parameters are monitored.
•
After the burner is cooled down to ambient temperature we can switch it off by pressing the main switch
on the control box of boiler (see Figure 2).
•
In the event that the burner is out of service for a long time, it is recommended to disconnect the boiler
from the mains and clean the combustion chamber, sweep off the ash from the grate and to clean the
photosensor.
7.2.1 Setting of the heat output of burner
The operating parameters of burner may only be set by an authorized and trained technician.
WARNING:
Every adjustment, which requires removing of the cover of the burner and any other potential
interventions into the equipment that is under voltage may only be carried out by an authorized and
trained technician.
The control module is equipped with light emitting diodes LEDs (green, yellow and red) that by flashing
indicate the operating mode of the burner and the set values according to the index of potentiometer. LEDs
are located under the cover of burner and are observable through the transparent window.
Green LED - number of flickers (1-5 times) indicates the index of the potentiometer:
P1 – initial dose of fuel for ignition;
P2 – dosing of fuel;
P3 – operation of fan at burning out;
P4 - stabilization (transfer from the minimum output of a given outlet output of burner.);
P5 – Operating value of sensibility of the photosensor
Yellow LED - number of flickers (0-9 times) indicates the values of the operating time (s) for the relevant
index of potentiometer P1 to P5.
Green LED flashes once (P1), then follows a series of flickers of yellow LED (0-9 times), according to their
number you can search the adequate value of operating time (s) in the Tab. no. 6 and 7 in column P1.
Then the green LED flashes 2 x (P2), then follows a series of flickers of yellow LED (0-9 times), according to
their number you can search the adequate value of operating time (s) in the Tab. no. 6 and 7 in column P2.
Flashing of LEDs goes on in the same way for index of the potentiometer P3 - P5.
Then the whole cycle repeats.
Red LED - lights up when the photosensor is in the stage of sensing the flame. If it flashes, it is a fault
condition (see Tab. No. 9).
Tab. no. 6 Description of the operating parameters of the control module of burner 25S
number of flickers of
yellow LED
Index of potentiometer
P1
P2
P3
P4
P5
[-]
Operating time (s)
Index
0
30
1,50
30
45
0
1
45
1,65
60
90
1
2
60*
1,82
90
135
2
3
75
2,18
120
180
3
4
90
2,83
150*
225
4
5
105
3,68
180
270
5
6
120
4,79
210
315
6
7
135
6,22
240
360
7*
8
150
---
270
405
8
9
165
---
300
450*
9
*
factory setting
Note: The maximum value of lighting up of yellow LED for parameter P2 is 7.
