Valeo spheros thermo 230, Workshop Manual

Page: 37 / 71

705
Thermo 230 / 231 / 300 / 301 / 350 7 Circuit Diagrams
Fig. 704: Automatic Control Circuit with Control Unit 1572D and Standard Timer
bl
br
ge
gn
gr
or
rt
sw
vi
ws
Wire colors
blue
brown
yellow
green
gray
orange
red
black
violet
white
Wire gauges
< 7,5 m 7,5 - 15 m
0,75 mm
2
1,0 mm
2
1,5 mm
2
2,5 mm
2
4,0 mm
2
1,5 mm
2
1,5 mm
2
2,5 mm
2
4,0 mm
2
6,0 mm
2
1 Diagnostic connector
2 Timer P:
with plus to connection 10 = continuous operating during immediate heating
terminal 10 not connected = duration of heating programmable (10 min to 120 min);
3 Pin assignment: Pin assignment 4wire lead 7wire lead
D1 0,75 gr 0,75 rt
D2 0,75 or 0,75 or
D3 0,75 gn 0,75 bl
D4 0,75 br 2,0 br
F1 not used 2,0 sw
F2 not used 2,0 rt/ws
4 with connection to terminal 61 auxiliary
Item Nomenclature Remark
A1 Heater
A2 Control unit SG 1572D
B1 Flame sensor observe polarity
B2 Temperature sensor polarity optional
B3 Temperature limiter
B4 Thermostat for nozzle preheating
B5 Thermostat alternative to B3
B6 Thermostat for vertical installation (MV Y1)
E1 Heating cartridge for nozzle preheating
F1 Fuse 5A flat fuse acc. DIN 72581 part 3
F2 Fuse 25A flat fuse acc. DIN 72581 part 3
F3 Fuse 25A flat fuse acc. DIN 72581 part 3
H1 Light operation indicator light
H2 Light flame indication light
H4 Symb. “Heating“ on display operation indicator light (in pos. P)
M1 Motor combustion air fan
M2 Motor circulation pump
P Pre-selection timer for pre-selection operation
Item Nomenclature Remark
S3 Switch ext. pump trigger
S4 Switch power save operation
U1 Igniter box
U2 Igniter electrodes
W1 wire harness (1)
W2 wire harness (2)
A Plug connections, 6-pole
C Plug connections, 1-pole
D Plug connections, 4-pole
F Plug connections, 2-pole
X1 Plug connections, 6-pole
X2 Plug connections, 2-pole
X3 Plug connections, 8-pole
X4 Plug connections, 12-pole
Y1 Solenoid valve
1
4
3 3 3 3
3
3
2