30
4.14 Wiring diagrams
4.14.1 Boiler
BLACK
BLUE
BROWN
TRA
EV
F
CN11
GREEN
GREEN
SE
BLUE
BLUE
BROWN
BROWN
PI
VD
2
3
BROWN
BLUE
YELLOW - GREEN
(#)
W4
L
N
CD. 6324920
CN6
CN5
CN3
CN17
CN4
CN1
CN15
CN14
CN13
CN12
CN2
RED
GREEN
WHITE
RED
RED
RED
RED
SS
V
FLM
SF
TS
TFU
SM
VC
C
GND
IN
BLA
CK
BLA
CK
BL
UE
RED
GREEN
BLA
CK
BL
UE
GREEN
BLUE
BL
UE
4 3 2 1
BL
UE
BLA
CK
GREEN
RED
BLUE
BROWN
EAR
SR
BLA
CK
BLA
CK
TA2
RED
ORANGE
GREEN
TPA
5V
GND
OUT
RED
BLACK
TA TASESE
OT
L
Live
N
Neutral
VD
Diverter valve
PI
Pump
SR
Return Sensor (SR)
SE
External sensor
SS
Domestic hot water sensor (SS)
TA2
Room thermostat for the zone
TPA
Pressure transducer
FLM
Flow meter
V
Fan
F
Fuse (3.15AT)
SF
Exhaust sensor (SF)
TS
Safety thermostat
SM
Delivery sensor (SM)
TFU
Thermal fuse
EAR
Ignition / Detection electrode
TRA
Ignition transformer
OT
OpenTherm communication
W4
Boiler connector (gas side) – Main control
panel
Fig. 45