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DIAGRAMS
3 DIAGRAMS
3 .1 Wiring diagram
Figure 3 .1
bu
rd
1
2
3
L
N
1
3
4
M
~
Room thermostat
Pump
terminal block
Electric supply
terminal block
Gas valve
External temp.
Remote
Fan
Ignition
electrodes
probe
bu
bn
bu
bn
gnye
bu
bn
bk
bk
rd
rd
bu
gnye
bn
ye
or
ye
gy
bk
bu
rd
rd
bu
bk
bu
bn
gnye
gnye
bu
bn
bu
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
terminal block
Fuse 2AF 250VAC
5x20
wh
wh
wh
wh
gy
wh
wh
t
bk
bk
bk
bk
bk
bk
rd
bu
bu
bu
bu
rd
bk
bk
C.H. temperature
probe NTC
flow
Safety
thermostat
Safety
Flue temp.
probe NTC
thermal fuse
tt
4
3
2
1
bu
bu
bu
rd
bu
rd
wh
t
wh
wh
wh
wh
wh
Flame detection
electrode
C.H. temperature
probe NTC
return
or
Time switch (option)