Immergas VICTRIX PRO 35 1 I, Instruction And Warranty Book

Page: 28 / 44

28
3-2
2
4
1
5
6
7
3
1
INS
TALLER
US
ER
MAINTEN
AN
CE TECHNI
CI
AN
The jumper X40 must be eliminated whenever
the room thermostat or cascade regulator are
connected. the cascade regulator; in addition, it
must be eliminated also in case of “bus” connec-
3.2 WIRING DIAGRAM.
Ke
y:
A2
-
P.C.B
.
A4
-
D
isp
la
y b
oa
rd
B1
-
Fl
ow p
ro
be
B2
-
D
om
es
tic h
ot w
at
er p
ro
be (o
pt
io
na
l)
B4
-
Ext
er
na
l t
em
per
at
ur
e p
ro
be (o
pt
io
na
l)
B5
-
Re
tu
rn p
ro
be
B10
-
Fl
ue
pr
ob
e
B25
-
Sys
tem fl
ow m
et
er
E
1
-
Ig
ni
tio
n e
lec
trode
E
2
-
D
et
ec
tio
n e
lec
trode
tion or when the 0 ÷ 10 V inlet is used.
A thermostat can be used instead of “B2” (set
P29 = 17)
E4
-
Sa
fety t
her
m
os
ta
t
E5
-
H
ea
t-ex
ch
an
ger s
af
ety t
her
m
os
ta
t (m
an
ua
l
re
se
t)
E13
-
Sa
fety t
her
m
of
us
e
G2
-
Ig
ni
ter
M1
-
Bo
iler ci
rcu
la
to
r p
um
p
M20
-
Fa
n
M30
-
Th
re
e-w
ay v
al
ve (o
pt
io
na
l)
S1
-
M
ai
n s
w
itc
h
S20
-
O
N/O
FF r
oo
m t
her
m
os
ta
t (o
pt
io
na
l)
X40
-
Ro
om t
her
m
os
ta
t j
um
per
Y1
-
G
as v
al
ve
1
-
Lo
w v
ol
ta
ge
2
-
0 - 10 V a
na
log
ue i
np
ut
3
-
Ext
er
na
l r
es
et
4
-
Fr
ee c
on
ta
ct a
la
rm MA
X. 1 A 230 V
ac
5
-
Ext
er
na
l p
um
p
6
-
Ext
er
na
l r
ela
y (o
pt
io
na
l)
7
-
Co
il 230 V
ac MA
X. 0.1 A
Col
ou
r k
ey
:
BK
-
Bl
ac
k
BL
-
Bl
ue
BR
-
Br
ow
n
G
-
Gr
een
GY
-
Gr
ey
G/Y
-
Gr
een-Y
ell
ow
O
R
-
O
ra
nge
P
-
Pu
rp
le
PK
-
Pin
k
R
-
Re
d
W
-
W
hi
te
Y
-
Ye
llo
w
W/BK
-
W
hi
te / B
la
ck
For safety reasons the P.C.B. envisions a fuse
that cannot be restored in series with the electric
power supply of the gas valve.