23
5.11 Wiring diagram
R
R
SBL
BK
BL
BR
TRA
EVG
FU
CN11
BL
BL
G
G
BK
BK
TA1
SE
BL
BL
BR
BR
PI
EVD
2
3
BL
BR
230 V - 50 Hz
L
N
CN6
CN5
CN3
CN17
CN4
CN1
CN15
CN14
CN13
CN12
CN2
R
R
V
SF
TS
SM
BK
BK
BL
R
G
BK
BL
BL
BR
BL
4 3 2 1
BL
BK
G
R
BL
BR
EAR
SR
BK
BK
TA2
3
2
1
4 5 6
R
OR
G
TPA
5V
GND
OUT
CR
L
Live / Live
N
Neutral
FU
Fuse (3.15AT) (3.15AT - 250V)
TRA
Ignition transformer
PI
Pump
V
Fan
EAR
Ignition / Detection elec-
trode
EVG
Gas solenoid valve
SMC
Boiler delivery sensor
SRC
Boiler return probe
TS
Safety thermostat
SF
Exhaust sensor (SF)
SBL
Hot water tank sensor (SB)
EVD
Diverter solenoid valve
TPAC
Water pressure transducer
TA1-TA2
Room thermostat
SE
External temperature sen-
sor
CR
Remote control (instead of
room thermostat)
BL
Blue
BR
Brown
BK
Black
G
Green
OR
Orange
R
Red
Note: Volt free external controls (TA) are connected to terminals 5 and 6 after removal of the link.
Fig. 17
m
CAUTION
Installer must:
– Connect the boiler to a 230v -50Hz single phase
power supply through a fused mains switch, with
at least 3mm spacing between contacts, fused at
3amps
which ensures complete cut-off in overvoltage
category III conditions (i.e. where there is at least 3
mm between the open contacts)
.
– Respect the connections L (Live) - N (Neutral).
– Ensure that the special power cable is only re-
placed with a cable ordered as a spare part and
connected by professionally qualified personnel.
m
CAUTION
Installer must:
– Connect the earth wire to an effective earthing
system.
Sime declines all responsible for any injury
or damage to persons, animals,or property as a result
of failure to provide adequate earthing of the appli-
ance
.
d
DO NOT
Do not use water pipes for earthing the appliance.
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