ST8
9
8
7
A
F
1
2
4
B
B
Heatronic III
ST10
ST6
Safety
isolation
ST25
Ls
Ns
ST9
ST17
ST4
ST5
pump
Div-v
CH
DHW
L
N
230V IN
L
N Ns Ls Lr
Ignition
transformer
230V
Twin
programmer
230V HW interface
‘Installer Module’
External
Frost stat
External
pump
EMS
bus
External stat
fan
Gas
valve
Flame
sense
spark
Primary
NTC
Tank NTC
Tank Overheat
High
Level
sensor
Condensate
pump
DHW
NTC
turbine
Primary
overheat
Flue
overheat
1
(in
se
rie
s)
Outdoor
temp NTC
Norm
closed
* pre-linked
*
*
NP
LP
FS FR
ST19
LZ
NZ
F
A
UL
T FINDING
& DIA
GRAMS
INSTALLATION & SERVICING INSTRUCTIONS
49
ELECTRICAL WIRING DIAGRAM
8 716 115 219b (09.2008)
ELECTRICAL WIRING DIAGRAM
Red
Yellow
White
Pink
Red, Yellow, Black
Green
Orange
Violet
Blue
Blue
Yellow
Violet
Red, Yellow, Black
Orange
White
Pink
Red
Green