Worcester CDi Combi N.G Service Booklet page 74

APPENDIX
12.5.2 CDi SYSTEM APPLIANCES
SAFETY
Black
SOLENOID
Black
SAFETY
SOLENOID
Earth
WIRING
CENTRE
CH TEM-
PERATURE
CONTROL
L Ls Ns
R
ST10
SPARK
TRANSFORMER
9V/25 V
230 V
230V/AC
DIAGNOSTIC
ST1
INTERFACE
Fig. 19 CDi System electrical diagram
74
Supplied By www.heating spares.co Tel. 0161 620 6677
FAN
FLUE
OVERHEAT
STAT
PUMP
MAINS
SUPPLY
PUMP
SUPPLY
Colour sequence
ST5
230 V EXTERNAL
N L
FROST STAT
(OPTIONAL)
Fuse, slow
2.5 A, AC 230 V
SENSOR FOR
DIVERTER
VALVE KIT
FLAME SENSE
ELECTRODE
Orange
FLOW NTC
Red
DIVERTER
VALVE
(Optional)
Red
Orange
PUMP
Blue
Yellow
CONTROL Green
Black
White
Black
Purple
DHW
TEMPERATURE
CONTROL
B
B
4
ST6
2
ST4
ST19
1
F
A
ST8
Red
Orange
Blue
ST17
Yellow
Green
Black
Black
Black
Black
Black
Red
Red
ST9
Orange
Fuse, slow T 0.5 A
Orange
Orange
Fuse, slow T1.6 A
White
Black
Purple
ST18
CODE
PLUG
8 716 115 748 (2009/09)
SPARK
ELECTRODES
Orange
HEAT
EXCHANGER
OVERHEAT
STAT
6 720 612 458-06.1O