GENERAL
10
WIRING DIAGRAM
L
power 230V
X1
-01-
1
N
power 230V
X1
-01-
2
PE
X1
-01-
3
Control L
X1
-02-
1
Control
N
X1
-02-
2
Fan power L
X2
-01-
1
Fan power N
X2
-01-
2
pi 1 L
X2
-02-
1
pi 1
N
X2
-02-
2
Lockout L
X2
-03-
1
N
X2
-03-
2
L-
Vm
ix
X2
-04-
1
Common
X2
-04-
2
L-
PB
X2
-04-
3
ER
X2
-05-
1
Si
c
X3
-01-
1
Si
c
X3
-01-
2
VG
230V
RC
X3
-02-
1
VG
230V
RC
X3
-02-
2
T-at
N
X3
-03-
1
T-at
L
X3
-03-
2
0
M
X3
-04-
1
GND
Fan cont
ro
l
X1
4-
1
+U
B
Fan cont
ro
l
X1
4-
2
HA
LL F
an cont
ro
l
X1
4-
3
PW
M
Fan cont
ro
l
X1
4-
4
+ 26
V
X1
1-
1
Si
c1
X1
1-
2
Si
c2
X1
1-
3
X1
1-
4
X1
1-
5
VD
C
X1
1-
6
IN
X1
1-
7
AN4 Flue gas temp. sensor
X1
1-
8
AN
3
BW
1
X1
1-
9
AN
2 SR
X1
1-
10
AN
1 SM
X1
1-
11
+5
V
X1
1-
12
AN
5 +5
V
SE
X1
0-
06-
2
AN
5
-I-S
E
X1
0-
06-
1
AN
3 +5
V
SB
X1
0-
05-
2
AN
3
I SB
X1
0-
05-
1
Pa
X1
0-
04-
2
Pa
X1
0-
04-
1
Si
c-
X1
0-
03-
2
Si
c-
X1
0-
03-
1
TA
1
X1
0-
02-
2
TA
1
X1
0-
02-
1
TA
2-
S
QAA7
3
X1
0-
01-
2
TA
2-
GND
QAA7
3
X1
0-
01-
1
AGU2.5
X50-5
AGU2.3
X30-14
OCI420
X40-5
X30-1/14
T1
T2
T3
T4
T5
T6
T7
T8
T9
T10
L1 N PE
1
2
AT
PE
Fan-PWM
L1 N PE
RIV
L1
1
L
2
N1
3
N
4
PE
5
FILTRO
6.3A
C1
-L
3
C1
-N
C1
-P
E
C1
-L
1
C1
-L
2
M9 M8
M7 M6 M5 M4
M20
M21
M10
M11
M
+
1
TA
C
2
PE
3
DCV
PV
M
4
-
5
L1
N
PE
M1 M2 M3
FI
FU
Connections to be made
by the installer
IG
PB
PI
Sb
TF
Pboiler
Pgas
Sm
SE
SCH2
SCH1
(*)
VE1
H2
TS
Treg
A
B
C
D
E
F
G
TR1
ER
EA
Sr
Sf
L1
L2
PE
N
L3
L1
L2
PE
N
L3
PE
N
L3
TA
230 Vac
VG1
230V~50Hz
C
A
B
D
E
F
G
open
Y1
clos
e
Y2
BSB
-4
p
BS
B
NA
/0-10V
H1
CH1pump
Q2
QX
1
QX
1
St.cyl.pum
p
Q3
1st stage
L1
PE
PE
T1
T1
N
N
T2
T2
X3
0-10
p
X3
0
L1
L1
S3
S3
N
N
CH1 snsr
BX
1
BX
1
ground
M
Boiler snsr
B2
DHW 1 snsr
B3
Outdoor snsr
B9
ground
BX
2
BX
2
LPB-
4p
LP
B
ground
M
X50-5p
X5
0
X60-6p
X6
0
LP
B
DB
ground
MB
L
L
PE
PE
S3
S3
4
4
SK
2
SK
2
SK
1
SK
1
N
N
N
N
N
N
N
N
PE
PE
PE
PE
PE
PE
PE
PE
M
M
M
M
M
M
M
M
CL
+
CL
+
CL
+
CL
+
CL
-
CL
-
CL
-
CL
-
G+
G+
SCH3
SCH4
DB-LPB
MB-LPB
LMU
CLIP-IN
communication card
L
230
V
N
230V
L
P1
N P1 C
va
l
C
co
mu
n.
A
va
l
NTC/10K
NTC 10K
SCH5
PI1
VM1
SI1
B1 M
Fan-PWM
TA
Room thermostat (low voltage, 24V)
FU
Fuse 6.3 A-T
IG
Main switch
FI
Mains filter
Treg
Connection for temperature controller (accessory)
TF
Flue gas thermostat, 75°C (+0/-10)
Pboiler Pressure switch (combustion chamber)
Pgas
Gas pressure switch
SCH1
Main board
SCH2
Display and control card
ER
Flame detection electrode
EA
Ignition electrode
TS
Safety thermostat (100°C +0/-6)
TR1
Ignition transformer
VG1
Gas valve
H2
Burner lockout indicator
VE1
Variable speed fan
PI
CH circuit pump (accessory)
PB
Storage cylinder pump (accessory)
SE
Outdoor temperature sensor (supplied)
Sm
CH flow temperature sensor
Sr
CH return temperature sensor
Sb
Storage cylinder temperature sensor (accessory)
Sf
Flue gas temperature sensor
(*) 230Vac output for alarm connection
BOILER CONTROL PANEL
