Schematic Wiring Diagram - Saunier Duval Sylva FF 24 E Servicing Instructions

SCHEMATIC WIRING DIAGRAM

ACF .................................... Flame control circuit
A1 ...................................... 230V Connector
A3-A5 ................................ 24V Connectors
A7 ...................................... Clock option connector
BR ....................................... Reset button
CTN .................................... Thermistor
EV1 ..................................... Modulating valve
EV ....................................... Main gas valve
EX ....................................... Fan
E/H ..................................... 'Summer/Winter' switch
F1, F2, F3 ............................ Fuses
FA ....................................... Ignition elctrode
FL ........................................ Flame sense electrode
IG ....................................... Mains ON/OFF switch
EV1
P1
CTN
6 5 4 3 2 1
A5
A7
Diagram. 12
12
K5
E/H
TA
9 8 7 6 5 4 3 2 1 5 4 3 2 1
A4
P3
-
+
L2 L1 L3
K4 ....................................... Overheat thermostat
K5 ....................................... Loss of water switch
LK4 ..................................... Safety reset light
L.alim ................................. Mains supply light
L1,L2,L3 .............................. Diagnostic LED's
P ......................................... Pump
Pr ........................................ Air pressure switch
P1 ....................................... Heating temperature control
P3 ....................................... Heating range rating adjuster
Rel1,Rel2,Rel3,Rel4 ........... Relays
SW2 .................................... Fan option shunt
TA ....................................... Room thermostat
TH ....................................... Cylinder thermostat
V2 ....................................... Three way valve
BR
K4
V2
TH P
1110 9 8 7 6 5 4 3 2 1
A3
Rel3
F1 - 4A
Rel2
Rel4
SW2
TRA
LK4
FL FA
ACF
EV
N
230V
L
IG
L.alim.
A1
EX
NO
C
Pr
NC
F3
315mA