Strebel S-CB+ Series, Installation Operating & Maintenance Manual

Page: 41 / 125

S-CB
+
Boiler Range Manual
41
K8
K0
K6
K7
K7
K7
K8
K7
K1
K1
ref.1
K2
K2
K2
only when unit is
cascaded
to
slave
boiler
to
master
boiler
R
em
ot
e
te
m
pe
ra
tu
re
s
et
po
int
o
r b
ur
ne
r
in
p
u
t
s
ign
al
fo
rm
B
M
S
w
at
er
p
re
ssu
re
s
wit
ch
C
al
or
ifi
er
the
m
o
s
ta
t
C
al
or
if
ie
r
s
ens
or
1
0
K
E
x
ter
n
a
l
fl
ow
s
ens
or
1
0
K
O
utd
oo
r
s
ens
or
1
2
K
connection
examples
POWER
SUPPLY
H
ea
t d
em
a
n
d
N
.O
.
F
lam
e
o
n
N
.O
.
Lo
c
k
-o
u
t
N
.O
.
K4
K4
CN4
+
CN not used
10 9 8 1 2 4 3 5 6 7 1 2 4 3 5 6 7 6 5 3 4 2 1
K5 K9
K9
K9
K6
K2
K2
K6
K2
K6
K2 K8 K6
K3 K8
K4
K7
K1
K0
K6
K6 K8
K8
K0
K0
K3
K3
K5
K5
K6
K2
K10
K6
K2
FAN
FAN
internal
connections
internal
connections
connection
examples
fu
s
e
2
fu
s
e
1
F2 F1
ref.1
N
.C.
N.C.
boiler casing
CN10
[cl
o
s
e
]
N
gas valve(s)
H
ea
t d
em
an
d
NO
ionisation and/or ignition
CN8
ignition
transformer incl.
ionisation input.
T2
CN7
display
CN6
H
ea
t d
em
an
d
NO
Op
en
T
he
rm
/
po
w
er
s
te
a
lin
g
th
er
m
os
ta
t
fan control
fan PWM
fan Hall
+24Vdc
-
siphon pressure switch (PSW)
clixon/maximum (S7)
water thermostat 24vdc
return sensor ntc (S2) 10K
flow sensor ntc (S1) 10K
CN5 CN1 CN3
CN12
14 13 12 11 10
9 8
7 6 5 4 3 2 1
12
11
10
9
8
7
6
5
4
3
2
1
CN10
CN11
2
3
4
5
6
7
8
16
15
14
13
12
11
10
1
2
3
4
5
6 7
8
9
10
11
12
1 2 3 4 5 6 7
8 9
10
11
12 13 14
M
A
IN
S
L
'
M
A
IN
S
N'
Lo
c
k
-Ou
t
NO
F
lam
e
on
NO
Lo
c
k
-Ou
t
NO
F
lam
e
on
NO
P
um
p
3,
N'
P
um
p
3,
L
'
Ga
s
V
al
v
e
,
L
'
Ga
s
V
al
ve
,
N'
P
um
p
1,
L
'
P
um
p
1,
N'
P
um
p
2
/ 3
-w
ay
, L
' (
NO
)
P
um
p
2
/ 3
-w
a
y,
N'
[o
pe
n]
3
-w
ay
, L
' (
NC)
out
Gnd
1
9
17
18
18
17
9
1 10
11
12
13
14
15
16
8
7
6
5
4
3
2
L N
Mains 230 VAC
L N
CH System
Pump P3
BURNER
BURNING
+ -
0 - 10
VDC
On/Off Stat
or
OpenTherm
Heating
Circuit
34 33 32 27 26 25 21 20 19 16 15 14 13 6 5 4 3 2 1
GENERAL
BLOCKING
22 23 24
HEAT
DEMAND
LOCK-OUT
N.O. N.O. N.O.
EXTERNAL
FLOW
SENSOR
CALORIFIER
SENSOR
or
THERMOSTAT
7 8 9 10 11 12
EXTERNAL
WPS
OUTDOOR
SENSOR
17 18
A B
CASCADE
CONNECTION
28 29 30 31
CN15
EMPTY
K8
K6
K8
K6
K3
L1 N L2
Divertor Valve Calorifier
by Calorifier Pump P2
K2
wire
bridge
External safety device:
- External flow switch
- Smoke detection
- Gas detection
- Ventilation fan
- Flue gas fan
- End switch motor actuated
flue gas valve
- Gas leakage tester
- etc
WIRING COLORS
K0=white K6=blue
K1=yellow K7=red
K2=brown K8=black
K3=green K9=purple
K4=grey K10=yellow/green
K5=orange
K
1
0
K
1
0
K
1
0
K
1
0
K10
K8 K8
T
he
rm
.s
ta
t
2
3
0
v
T
he
rm
.s
ta
t
2
3
0
v
connector
on/off pump
flue sensor ntc (S6) 10K
water pressure sensor
(water pressure switch will
be mounted above 4 Bar)
+5V
out
Gnd
N
.C.
rear wall thermal
fuse
K1
K1
(water pressure switch
connection) Not used
M
od
el
6
0
ha
s
n
o
th
er
m
a
l
fu
se
an
d
no
th
er
m
al
swit
ch
.
B
ot
h
c
on
ne
c
ti
on
s
a
re
b
rid
g
e
d
.
N
.C.
burner door thermal
switch
Power PWM pump
K10
K6
K2
PWM pump control
K0
K8