7 Circuit Diagrams and Examples for Electrical Installation
HL 90
702
Fig. 701 Operation with Timer and Room Thermostat
WS
B2
bl
1
2
4
R1
3 1
br
58
30
31 31
S6
75 (15)
K4
rt/bl
bl
sw
ge
vi
br
3
X6
Y
bl
br
1 6
6
2
105
T
K3
2
4
X2
A1
B1
M
2
X3
14
E
X4
XC
F1
XA
A2
M
X5
12
1 2 4
1
F2
K1
rt
ge
br
br
K2
21
XB
br
X7
58
30
75 (15)
br
R2
br
2
1
B3 S2
H1
S4
S3
5
1
3
4
X00
X0
vi
12
12
4mm
2
1,5mm
2
1,5mm
2
0,75mm
2
0,75mm
2
0,75mm
2
1,5mm
2
0,75mm
2
0,75mm
2
0,75mm
2
1mm
2
1mm
2
gn
sw
1mm
2
1mm
2
0,75mm
2
0,75mm
2
1,5mm
2
1,5mm
2
1,5mm
2
0,75mm
2
2,5mm
2
2,5mm
2
2,5mm
2
1,5mm
2
1,5mm
2
0,75mm
2
4mm
2
4mm
2
0,75mm
2
rt
rt/bl
ge
or
gn
1
P
10 11
H3
H2
H1
12 74
2
8
6
9
X12
6 5 4
13 2
2
1
1
3
5
7
9
11 13
2
4
6
8
101214
XA
XB XC X2
1
2
X3; X5 X6 X7 X12
1
3
2
4
X4
1
2
4
5
3
6
7
8
10
11
9
12
Item Nomenclature Remark
Y Dosing pump 12V
Y Dosing pump 24V
X12 Connection 12-pole
X7 Connection 4-pole
X6 Connection 2-pole
X5 Connection 2-pole
X4 Connection 2-pole
X3 Connection 2-pole
X2 Connection 2-pole
X1 Connection 1-pole
X0 Clamping connection Glow plug +
X00 Clamping connection Glow plug –
XC Connect. for tab receptacle 14-pole
XB Connect. for tab receptacle 2-pole
XA Connect. for tab receptacle 6-pole
T Transistor in control unit
S6 Battery switch in vehicle
S4 Thermostat, heating full load / part load
S3 Switch, heating full load / part load
Item Nomenclature Remark
S2 Switch, ON/OFF
R2 Glow plug resistor 12V
R2 Glow plug resistor 24V
R1 Resistor 12V
R1 Resistor 24V
P Timer (1531) 12V
P Timer (1531) 24V
M Motor 12V
M Motor 24V
K4 Relay in control unit
K3 Relay in control unit
K2 Relay in control unit
K1 Relay in control unit
H3 Symbol illumination for digital display
H2 Operating indicator light, heating / ventilation
H1 Light Operation indicator
F2 Flat fuse 12V 20A
F2 Flat fuse 24V 20A
F1 Flat fuse 12V 20A
Item Nomenclature Remark
F1 Flat fuse 24V 20A
E Glow plug 4V
B3 Room thermostat 12/24V
B2 Temperature limiter 12/24V
B1 Flame sensor 12/24V
A2 Control unit 12V
A2 Control unit 24V
A1 Heater HL 90 12V
A1 Heater HL 90 24V
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
bl
br
ge
gn
gr
or
rt
sw
vi
ws
Wire Colours
blue
brown
yellow
green
grey
orange
red
black
violet
white
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