52
Function of the switch contact
When teh boiler is in operation: WK/AK is closed
When the boiler is turned off and the flue gas temperature is <
100 °C: WK/RK is closed
The CPU error
All the relays are turned off by the Hardware Watchdog
Protection against freezing
By the boiler stopped with the temperature < 7 °C:
Start of the supply pump, Y1 and Y2 = 100 %.
If the boiler temperature increases to > 8 °C, the supply pump is
stopped.
Y1 = 0 %, Y2 = 100 %.
Protection of the flue gas fan and
the flue gas sensor against
overheating
Flue gas temperature > 350 °C, the flue gas fan is turned off
Flue gas temperature < 299 °C, the flue gas fan is turned on
Short circuit of the „+“ button
Button of the regulator does not react even to a significant pressure
Function of access (Menu)
The menu automatically disappears after the safety time elapses
Safety test
Takes max. 30 min and it is automatically terminated or interrupted,
if the boiler temperature is > 110 °C, or the „+“ button has not been
pressed for 30 seconds
Operating range of the
automatic adjustment of the
return connection to the
particular value.
Between 60 °C and 80 °C
Operation without settings is
controlled by technician
The regulator is adjusted after the setting by producer.
Data storing
Only when there is enough energy > 160 V.
4.32
CHARACTERISTICS OF THE WATER TEMPERATURE SENSOR
(THE PROFI VERSION)
Temperature °C
MIN
Resistance to
MAX
–55
–50
–40
–30
–20
–10
0
10
20
25
30
40
50
60
70
80
90
100
110
120
125
130
140
150
951
1000
1105
1218
1338
1467
1603
1748
1901
1980
2057
2217
2383
2557
2737
2924
3118
3318
3523
3722
3815
3901
4049
4153
980
1030
1135
1247
1367
1495
1630
1772
1922
2000
2080
2245
2417
2597
2785
2980
3182
3392
3607
3817
3915
4008
4166
4280
1009
1059
1165
1277
1396
1523
1656
1797
1944
2020
2102
2272
2451
2637
2832
3035
3246
3466
3691
3912
4016
4114
4283
4407