ELECTRICAL WIRING
3008
D4638
BURNERS
ONE STAGE
D4637
BURNERS
TWO STAGE
3
GB
KEY TO LAY-OUT
A
– Two-way connector
B
– Four-way connector
D
– Earth wire
G
– Connectors for servomo-
tor
F
– Adjustable clamp
nd
B5
– Working signal 2
C
– Capacitor
CN1 – Probe connector
E
– Electrode
– 2 nd stage hour counter
h2
MV – Motor
PA – Min. air pressure switch
PG – Min. gas pressure switch
RS – Remote reset
SM – Servomotor
SO – Probe ionization
TR
– Adjusting thermostat
TB
– Burner earth
V2
– Protection
V10 – Safety valve
st
V11 – 1
stage valve
nd
V12 – 2
stage valve
X..
– Socket
XP.. – Plug
1
– Black
2
– Blue
3
– Brown
stage