4.5 Wiring diagram
Key
BZ1 1st-stage hour meter
BZ2 2nd-stage hour meter
F Fuse
FR Photo-cell
IG Main switch
LS Safety lamp
MB Burner motor
PB Burner socket
SC Plug
TR1 1st-stage boiler thermostat
TR Ignition transformer
TS Safety thermostat
TR2 2nd-stage thermostat
VE1 1st-stage electromagnetic valve
VE2 2nd-stage electromagnetic valve
SQN Servomotor
42
TR2
N
TS
BZ2
h
B5 T6
T7
T8
B5 T6
T7
T8
LM024
3
1
2
4
VE 1
VE 2
MB
Cod. 35442643 - 08/2007 (Rev. 00)
Ph
N
N
IG
LS
F
TR1
L1
N
T1
T2
S3
B4
L1
N
T1
T2
S3
B4
12
9 10
11
5
6
7
8
FR
TR
fig. 13
SUN G30
N
BZ1
h
SC
PB
N
4
1
3
2
7
6
8
5
SQN 70
SQN
GB