
Terminal assignment, mains side
Abbreviations, sensor side
N
Neutral conductor
Earth
GND
L5
Recharging primary
Temperature of tank at top
T1O
Total fault message
L4
Zone valve cascade
Domestic hot water temperature secondary TWW
L3
Return flow switch
Domestic cold water temperature
TKW
L2
Circulation pump
Primary flow temperature
TPV
L1
Primary pump
Circulation temperature
TBZ
L'
Contactor phase 230V AC
Primary return temperature
TPR
L
Mains phase 230V AC 50Hz
Temperature of tank at bottom
TU1
ES 5941
Assembly and connection
08/2020 Item no. 215790 EA no. 1321
Operating instructions
9