Internal Wiring Diagram - Bosch WORCESTER GREENSTAR Ri ErP Series Installation, Commissioning And Servicing Instructions

8.1.1 INTERNAL WIRING DIAGRAM

PRESSURE
SWITCH
GAS
VALVE
SAFETY
SOLENOID
SAFETY
SOLENOID
F2
SPARK
TRANSFORMER
ON/OFF
SWITCH
Slow 2 A fuse,
AC 230 V
F1
ST1
L N LP NP LR
L N LP NP LR
Earth
MAINS
SUPPLY
Greenstar Ri ErP - 6 720 813 283 (2016/07)
† Fan wiring:
Live = purple
Neutral = brown
FAN
FLUE
OVERHEAT
STAT
Slow T1.25 A fuse
25V
230V/AC
DIAGNOSTIC
INTERFACE
ST2 ST6
ST5
Colour sequence †
SL
N
L
230V WIRING CENTER/
JUNCTION BOX
SPARK
ELECTRODES
FLOW TEMP.
SENSOR (NTC)
CH TEMPERATURE
CONTROL
CODE
PLUG
Max
Min Norm
MODE
SWITCH
EXTERNAL
PUMP
FAULT FINDING AND DIAGNOSIS
FLAME SENSE
ELECTRODE
OVERHEAT
STAT
ST9
Green
Red
Blue
Violet
Orange
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