46
3062880_0910
Wiring diagram MGK-170-300
5
4
3
3
2
2
1
1
M2
(V
entilator)
gn/ge
br
br
bl
ws
gn
2
1
1
2
E1
(Zündeinheit)
B3
(Ionisation)
bl
br
gn/ge
sw
Brenner
Netz Kondensat- pumpe
Gehäuse
blau
Brücke
Störmeldung
Kondensatpumpe
2
1
1
2
Y0
(Gaskombiventil)
Y2
Y1
X10 (Schutz- leiter- klemme)
34
5
2
1
3
2
1
L
N
L
N
L
L
N
L
N
L
N
L
N
+
-
~
+
-
+
-
~
~
~
~
~
+
-
+
+
-
~
~
~
+
+
-
Netz
AusgangA1
Zubehör
V1
V2
HK-Pumpe
Zündung
Ventilato
r
Ionisation
eBUS
eBUS
eBUS-Stecker
gn
ge
rt
GND
GND
R680
12V
+
+
-
-
eBus
EingangE1
Außenfühler
Rücklauffühler
TW-Abgas
TW-Vo
rlauf
Vorlauf
fühler
PWM
Drehzahl
GND
3WU-WW
3WU-HZ
Masse
Speicherfühler/
Hallsensor
GND
12VDC
B2 (Rücklauf- fühler
)
S2 (TW-Abgas
)
S4
(Abgas
-
druck- wächter)
>
X1
X2
X3
X6
X4
X7
X5
X9 (Parameterstecker)
X8
br
gn
grau
schwarz
ws
B
4.1
Speicherfühler
br
ws
gn
br
gn
ws
ge
ws
br
gn
br
gn
ge
ws
ge/gn
sw
bl
br
bl
br
bl
bl
br
sw
br
bl
sw
ws
sw
bn
rs
br
ws
gr
gn
ge
ws
ge
gn
br
A2
A
1
br
bl
ws
sw
gn/ge
ge
AF
E1
eBUS +
-
1
2
a
b
Netz
Z
A1
N
N
N
L1
L1
L1
o
o
o
o
o
o
MT 3,15
A
F1
1
2
1
2
1
2
br
bl
gn/ge
sw
ws
rt
L1
N
gn
ws
gr
rs
br
ge
L1
N
L1
N
L1
N
L1
N
rt
rt
B1 (V
orlauf
-
fühler)
S1 (T
W
-
Vo
rlauf
)
>
ws
ge
gn
br
S3 (W
asser-
druck- schalter)
P<
P>
2
2
1
1
1
2
3
3
3
S5
(Gasdruckwächter
)
P>
1
2
3
Junction
box:
Power
supply
230
V
AC
50
Hz
Z
Heating
circuit
pump
A1
Programmable
output
E1
Programmable
input
eBUS
BUS
connection
for
external
control
accessories
AF
Outside
temperature
sensor
A1
Control
PCB
A2
LED
PCB
B1
Flow
sensor
B2
Return
sensor
B3
Ionisation
electrode
B4.1
Cylinder
sensor
E1
Ignition
unit
F1
Mains
fuse
M2
Fan
S1
TW
-
flow
S2
TW
-
flue
gas
S3
W
ater
pressure
switch
S4
Flue
gas
pressure
switch
S5
Gas
pressure
switch
X9
Boiler
coding
card
X10
Earth
terminal
Y0
Gas
combi
valve
5
A
B3
(ionisation)
E1
(ignition
unit)
M2
(fan)
Y0
(gas
combi
valve)
blk
yel
Burner
ye
ye
wh
S5
(gas
pressure
switch)
Network
condensate
pump
black
S4
(flue
gas
pressure
switch)
fault indication
condensate
pump
B2
(Rücklauf
-
fühler)
S2
(TW
-flue
gas)
B1
(flow
sensor)
S1
(TW
-flow)
S3
(water
pressure
switch)
grey
Jumper
Casing
blue
B
4.1
cylinder
sensor
X10
(earth terminal)
ye
ye
ye
ye
ye
ye
ye
Mains
Output
Accessories
HC pump
Ignition
Fan
Input E1
Outside temperature
sensor
Return sensor
Tl flue
gas
TW flow
Flow sensor
Speed
Earth
Cylinder sensor
/ hall
sensor
X9
(parameter
plug)
eBUS
plug