Ideal Boilers HE30 - Page 28

28
icos - Installation & Servicing
INSTALLATION
Dry fire
thermistor
Spark generator
nm8143
bk
b
br
bk
b
bk
r
r
br
b
r
r
b
r
r
r
or
or
or
or
b
pk
pk
y
y
y/g
y/g
y/g
y/g
y/g
y/g
y/g
y/g
bk
bk
Overheat
thermostat
Control
thermistor
Gas valve
ON /OFF
Switch
Service
connection
bk
Fan
y
y
Chassis
earth y/g
Control PCB
Fused at
3.15ATL
y
y
User
control
and
display
br
b
Filter
Ferrite
MAINS
SUPPLY
230V 50Hz
y/g
38 FUNCTIONAL FLOW WIRING DIAGRAM
37 PICTORIAL WIRING DIAGRAM
LEGEND
b-blue
bk - black
br - brown
gy - grey
or - orange
pk - pink
r-red
v-violet
w-white
y-yellow
y/g - yellow/green
LEGEND
b-blue
bk - black
br - brown
gy - grey
or - orange
pk - pink
r-red
v-violet
w-white
y-yellow
y/g - yellow/green
Overheat
thermostat
1
2
br
r
r
bk
y
pk
b
Mains Switch
Flame detection
electrode
DC
Fan
Ignition electrode
Control thermistor
DC Gas valve
b
bk
or
or
Control PCB
User PCB
y/g
r
r
y
y
nm8144
Spark generator
Dry fire
thermistor
br
y/g
y/g
br
bk
N
L
E
b
b
Filter
External switch e.g.
room'stat, programmer
br
b
INSTALLATION
202414-6.pmd 19/02/2008, 13:0728