User manual

66
Service setting manual
ENG
OPERATION MODES IN CASES OF SENSOR MALFUNCTION
Outdoor sensor is not connected or has a failure
In such case, the controller operates as a P-controller according to room temperature de-
viation. If room temperature sensor also has a failure or is not connected, the controller will
maintain constant stand-pipe temperature, which is:
- 25 °C higher as the set day or night temperature; for radiator heating system,

Stand-pipe sensor is not connected or has a failure
The controller assumes a 120 °C stand-pipe temperature and deactivates room heating.
Heating can be reactivated only by manual operation mode.
Liquid fuel boiler sensor is not connected or has a failure.
The controller assumes a 85 °C boiler temperature and activates the burner, if heating is
required. The boiler temperature can be set manually on a boiler thermostat.
Solid fuel boiler sensor is not connected or has a failure.
The controller assumes a 85 °C solid fuel boiler temperature. Switchover valve turns to
the solid fuel boiler.
Room sensor is not connected or has a failure.
Room heating operates uninterrupted, according to the outdoor temperature.
Return-pipe sensor is not connected or has a failure.

The sensors of d. h. w. storage tank are not connected or have a failure
If one sensor has a failure, the controller uses only the other sensor. If both sensors have a
failure, the controller switches off the pump for d. h. w. warming.
Solar collector sensor is not connected or has a failure.
The circulation pump for d. h. w. warming with solar collectors is deactivated.
TABLE: resistance of Pt1000 temperature sensors
Temp. [°C]  Temp. [°C]  Temp. [°C]  Temp. [°C] 
-20 922 35 1136 90 1347 145 1555
-15 941 40 1155 95 1366 150 1573
-10 961 45 1175 100 1385 155 1592
-5 980 50 1194 105 1404 160 1611
0 1000 55 1213 110 1423 165 1629
5 1020 60 1232 115 1442 170 1648
10 1039 65 1252 120 1461 175 1666
15 1058 70 1271 125 1480 180 1685
20 1078 75 1290 130 1498 185 1703
25 1097 80 1309 135 1415 190 1722
30 1117 85 1328 140 1536 195 1740