24
Installation info
fig. 26
2.3 WIRING DIAGRAM
2.3.1 ACTUAL WIRING DIAGRAM
LEGENDA
A1...A8 = Connectors
Y1 = Room thermostat 24 V connector
Y2 = Electrical supply connector
IG = ON/OFF switch
TA = Room thermostat (optional)
VG = Gas valve
E. RIV = Ionisation electrode
E. ACC = Ignition electrode
V = Fan (only for TFS)
PV = Fan pressure switch (only for TFS)
TL = H.L. Thermostat
TF = Flue-gas spillage thermostat
(only for TN)
P = Circulating pump
DK = Minimum water pressure switch
SR = C.H. sensor
FL = Rotary flow switch (only for CTN-CTFS)
SS = D.H.W. sensor (only for CTN-CTFS)
SS * = D.H.W. sensor (only for boiler with external D.H.W.
tank)
MVD = Motor 3 way valve (optional for only heating boiler).
WHITE
WHITE
WHITE
BROWN
BLUE
BLUE
BLUE
BLUE
WHITE
WHITE
NERO
WHITE
YELLOW-GREEN
BLUE
BROWN
RED
GREEN
GI A/ VER
BLUE
BROWN
BLACK
YELLOW-GREEN
BLUE
BLACK
ORANGE
SAFETY
VALV E
(V1)
MODUL ATING
VALVE
(V2)
SSFL SRDK
54321 43 2 1
A3
COM
NA
TLTF TL
A4
321
4
321
4
N
L
NCNA
C
VPV
A5
54321 54321
RTN 24 / CTN 24 F
RTF 24 / RTF 28
CTFS 24 F / CTFS 28 F
Y1
6
A2
SS *
5432 16
IG
A7
TA
E. RIV.
TEFLON WHI TE
FS1
TEFLON RED
IGNIT ION
TRASFORMER
SUPPLY
(L1)
(L2)
VG
PE
654321
A6
E. ACC. 2
TEFLON RED
E. ACC. 1
1
2
Y2
N
L
POWER SUPPLY
230 V - 50 Hz
654321
YELLO W-GREEN
BLUE
GREEN
WHI TE
RED
BROWN
P
7
(L1)
(N)
654321
P
7
(L1 )
(N )
A8
RTN 24 - RTFS 24 - RTFS 28
CTN 24 F /
CTFS 24 F / CTFS 28 F
A8
6
543
217
4321
A3
A6
1234
5
6
A5
543
21
A4
4 32
1
JP1
JP2
654321
A2
A1
4321
765
GND 1
GN D2
GND 3
GND 4
GND 5
FS1
Y2
Y1
A7
21
F1
N
L
OT/RT
321
A9
OTRT
LPG NAT
ON
LD1
CH
LD2
FLAME
LD3
LOCKOU T
LD4
SWE EPER
RESE T
SW1
SW2
P1
CH
P2
DHW
P3
Max P
P4
MI N
P5
IGT
L
N
21
OT/ RT
M
230V-50Hz
C.H.
MDV
WHI TE
BLACK
BROWN
YELLOW-GREEN
BL U
BROWN
WH I TE
BROWN
RED
RED
BLUE
BROWN
BL ACK
BL UE
BROWN
D.H. W.
YELLOW-GREEN
BLUE
BROWN
CTN 24 F /
CTFS 24 F / CTFS 28 F
RTN 24/ CTN 24 F
RFT 24 F / RFT 28
CTFS 24 F / CTFS 28 F
RTN 24 / RTFS 24
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