333061809_1210
Wiring diagram boiler control unit R1
*Accessories
**RemovejumperwhenusingtheprogrammableinputE1(parameterHG13).
On-siteemergency
stopswitch
Powersupply230V/50Hz
S1 -ON/OFFswitch
F1 -M6.3A
X1-20 -Terminalstrip
STB -Highlimitsafetycut-out
KKP -Boilercircuitpump
A1 -ProgrammableoutputA1
LP -Primarypump
PE -Earthconductor,boilercasing
AF -Outsidetemperaturesensor
KF -Boilersensor
SF -Cylindersensor
E1 -ProgrammableinputE1
eBUS -eBUS
Burnerstage1Remotereset
(option)