11
6155049
Assembly and installation
(cont.)
Installation sequence
Connection to a single-phase power system
(for 4 kW, 6 kW and 8 kW boilers)
Connection to the three-phase power system
PNL – Terminals for neutral, earth and phase
conductors
1
– Temperature limiter
2
– Additional conductors
(only for single-phase system) Input Output
PNL – Terminals for neutral and earth conductors
PF – Terminals for phase conductors
1
– Temperature limiter
A
Main power supply
B
Control inputs/outputs and sensors
1
N
L
PNL
2
1
N
L
PNL
Internal view
