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DIAGRAMS
3
DIAGRAMS
3.1 Wiring diagram M110B.24SM/... M110B.32SM/...
figure 3.1
Ignition
electrodes
Flame detection
electrode
External controls
terminal block
Electric supply
terminal block
Three way
diverter valve
Pump
Fan
Primary circuit
flow switch
D.h.w. flow
switch
C.h. temperature
probe NTC
Gas valve
Safety
thermostat
Flue
temperature
D.h.w. temperature
probe NTC
probe NTC
LD1
LD2
LD3
F1
F2
F3
K1
K2
K3
K4
LD4
P6
T3
X1
X2
X3
X5
X6
X7
X10
X11
X12
X1
3
X17
X23
X24
P3
X14
X15
SB1
X16
X2
2
X9
bu bn
bu
bn
n
b
n
b
u
b
u
b
L
N
gnye bu
bn
bn
bk
bu
bn bu
gn
ye
bn
bk bu
bn
gnye bu
gn
ye
u
b
n
b
rd wh bk
bu bn
gn
ye
gnye
bu
bn
bu
1
4
5
bu bn
bn bu
wh
og
wh
gy
t
t
bk rd
rd
bk
bu
bu
bu
bu
wh
bu
wh
bu
M
~
rd
bk
bu
gy
wh
rd
gy
bu
wh
bk
t
bk
wh
wh
bk
bk
wh
NO
COM
rd
rd
rd
rd
gy
gy
gy
gy
Transformer
230V~ / 24V~
Sp
ar
k
Ge
nera
to
r
Time switch
rd
gn
bk
bn = brown
bu = blue
bk = black
wh = white
rd = red
gy = grey
gn = green
ye = yellow
vt = violet
og = orange
gnye = green/yellow
rdwh = red/white
bn
h
w
h
w
Safety
thermal fuse
t
gy
gy
wh
M
~
3
2
1
3 2 1
rd
bk
wh
wh