Circuit Diagram - Worcester GREENSTAR 24i Junior Installation Instructions Manual

7.1.1

CIRCUIT DIAGRAM

GAS
VALVE
SAFETY
SOLENOID
SAFETY
SOLENOID
Earth
230V
EXTERNAL
Neutral Supply
CONTROLS
Live Supply
OPTION
Live Return
CH TEMPERATURE
CONTROL
*
ST10
SPARK
TRANSFORMER
9V 25V
230V/AC
ST1
Fig. 127 i Junior circuit diagram
6 720 644 741a (2010/10)
† Fan wiring:
Live = purple
Neutral = brown
FAN
FLUE
OVERHEAT
STAT
DHW TEMP.
MAINS
SENSOR (NTC)
SUPPLY
Colour sequence †
ST5
L L N N L
R S
S
Fuse F1, slow
SI1
2.5 A, AC 230 V
WORCESTER 24V CONTROLS
OPTION, PLUG IN POINT
(under blanking cover on fascia)
DIAGNOSTIC
INTERFACE
FLOW TEMP.
SENSOR (NTC)
PUMP
PUMP
EXTERNAL
SUPPLY
FROST STAT
(OPTIONAL)
ST4
ST6
FR FS NP LP
ST8
ST17
ST9
Fuse F3, slow T 0.5 A
SI2
Fuse F2, slow T1.6 A
SI3
ST18
CODE PLUG
FAULT FINDING AND DIAGNOSIS
FLAME SENSE
ELECTRODE
OVERHEAT
STAT
SPARK
ELECTRODES
DIVERTER
VALVE
FLOW
TURBINE
Red
Orange
Blue
Yellow
Green
Black
Blue
Blue
Purple
Purple
Orange
Orange
Green
Black
Yellow
Red
Yellow
Yellow
Red
Red
PRE WIRED LINK
6720644741 08 1Wo
69