Position Of Wired Components - Bosch Worcester 7 716 192 566 Installation Instructions Manual

6.4

POSITION OF WIRED COMPONENTS

FAN
GAS
VALVE
SAFETY
SOLENOID
SAFETY
SOLENOID
Earth
230V
EXTERNAL
ROOM STAT
Neutral Supply
WHEN USED
Live Supply
WITH DT20
Live Return
CH TEMPERATURE
CONTROL
*
L
R
ST10
SPARK
TRANSFORMER
PRE WIRED LINK
230V~
ST1
i System Diverter Valve kit 6 720 645 222 (2012/09)
† Fan wiring:
Live = purple
Neutral = brown
FLUE
OVERHEAT
STAT
MAINS
SUPPLY
Colour sequence †
ST5
L N N L
S S
Fuse F1, slow
SI1
2.5 A, AC 230 V
WORCESTER 24V CONTROLS, PLUG IN POINT
OPTIONS: DT20 OR DT20 RF OR DT10 RF
(under blanking cover on fascia)
DIAGNOSTIC
INTERFACE
FLOW TEMP.
SENSOR (NTC)
PUMP
PUMP
EXTERNAL
SUPPLY
FROST STAT
(OPTIONAL)
DHW TEMPERATURE
CONTROL (CYLINDER)
B
B
4
Outside sensor
2
ST4 ST6 1
FR FS NP LP
A
F
ST8
ST17
EMS BUS contacts
(for FX controls)
ST9
Fuse F3, slow T 0.5 A
SI2
Fuse F2, slow T1.6 A
SI3
ST18
CODE PLUG
FLAME SENSE
ELECTRODE
OVERHEAT
STAT
SPARK
ELECTRODES
DIVERTER
VALVE
Wall plate contacts
(for FX controls)
B B
TANK STAT
(OPTIONAL)
(FW 100)
Red
Orange
Blue
Yellow
Green
Black
Blue
Blue
Purple
Purple
Orange
Orange
Green
Red
Red
Optional cylinder
temperature
sensor
6720645222-22.4Wo
ELECTRICAL
11