BA Battery
CAL Boiler
CM Membrane connector
CN1 Serial transmission connector
CN2 Not managed
CN3 Level probe connector
CN4 Programming swith connector
CN5 Circuit board display connector
CT Power connector
IP Switch programming
MC Machine
RE Relay
SCB Circuit board
SCD Display circuit board
SL Level probe
TG Contactor
FIG. A Connection Circuit board - Circuit board display
FIG. B Jumpers