16
P
P
ϑ
ϑ
ϑ
Fig. no. 9
Elementary wiring diagram of VIADRUS G 90 – 10, 12, 15 sectional boiler for Honeywell
version
A
1
A
u
to
m
a
ti
c
s
–
H
o
n
e
y
w
e
ll
4
5
6
3
B
1
0
1
1
E
1
Ig
n
it
io
n
e
le
c
tr
o
d
e
E
2
Io
n
iz
a
ti
o
n
e
le
c
tr
o
d
e
F
1
F
u
s
e
4
A
F
2
F
u
s
e
2
,5
A
H
1
S
ig
n
a
lli
n
g
"
B
o
ile
r
u
n
d
e
r
v
o
lt
a
g
e
"
H
2
“f
a
ilu
re
”
s
ig
n
a
lli
n
g
H
3
“i
o
n
is
in
g
f
a
ilu
re
”
s
ig
n
a
lli
n
g
S
1
M
a
in
p
o
w
e
r
s
w
it
c
h
S
2
R
e
d
u
c
e
d
/r
a
te
d
o
u
tp
u
t
s
w
it
c
h
S
3
P
u
s
h
b
u
tt
o
n
R
E
S
E
T
X
1
0
B
o
ile
r’
s
t
e
rm
in
a
l
p
la
te
Y
1
G
a
s
V
a
lv
e
H
o
n
e
y
w
e
ll
V
R
4
6
0
1
Q
B
2
0
0
1
Y
2
G
a
s
V
a
lv
e
H
o
n
e
y
w
e
ll
V
R
4
6
0
5
Q
B
2
0
0
2
Z
1
A
n
ti
-i
n
te
rf
e
re
n
c
e
e
le
m
e
n
t
B
T
1
s
a
fe
ty
t
h
e
rm
o
s
ta
t
B
T
2
c
o
m
b
u
s
ti
o
n
p
ro
d
u
c
ts
t
h
e
rm
o
s
ta
t
B
T
4
b
o
ile
r
th
e
rm
o
s
ta
t
P
S
3
M
in
im
a
l
w
a
te
r
le
v
e
l
g
u
a
rd
S
P
1
M
in
im
a
l
g
a
s
p
re
s
s
u
re
g
u
a
rd
S
P
2
G
a
s
f
la
n
g
e
l
e
a
k
ti
g
h
tn
e
s
s
g
u
a
rd
X
6
,
X
7
G
a
s
v
a
lv
e
c
o
n
n
e
c
to
rs
