7 Circuit Diagrams and Examples for Electrical Installation
HL 90
704
Fig. 703 Operation with Room Thermostat (Full Load - Part Load) and Ventilation
58
30
S2
31 31
S5
S6
75 (15)
K4
WS
rt/bl
bl
sw
ge
vi
br
3
X6
Y
bl
br
1 6
B2
6
2
105
T
K3
2
4
X2
A1
B1
M
4 2
X3
14
E
X4
XC
F1
XA
A2
bl
R1
M
X5
12
1 2 4
1
F2
K1
rt
ge
br
br
K2
3
21
XB
ge
1
rt/bl
X7
58
30
75 (15)
br
R2
br
2
1
H2
3
4
1
5
H1
B3
S4
S3
1
2
or
gn
ge
vi
E
A
F
B
12
12
X00
X0
F3
4mm
2
1,5mm
2
0,75mm
2
0,75mm
2
0,75mm
2
1,5mm
2
1,5mm
2
0,75mm
2
1,5mm
2
1,5mm
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
0,75mm
2
1,5mm
2
1,5mm
2
0,75mm
2
2,5mm
2
4mm
2
4mm
2
Ventilation / Part load
rt
rt/bl
Item Nomenclature Remark
Y Dosing pump 12V
Y Dosing pump 24V
X7 Connection 4-pole
X6 Connection 2-pole
X5 Connection 2-pole
X4 Connection 2-pole
X3 Connection 2-pole
X2 Connection 2-pole
XC Connection for tab rectable 14-pole
XB Connection for tab rectable 2-pole
XA Connection for tab rectable 6-pole
X0 Clamping connection Glow plug +
X00 Clamping connection Glow plug –
T Transistor in control unit
S6 Battery switch in vehicle
S5 Switch, ventilation, full load / part load 12V
S5 Switch, ventilation, full load / part load 24V
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
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
H2 Operating indicator light,
heating / ventilation
12V
H2 Operating indicator light,
heating / ventilation
24V
H1 Light Operation indicator
F3 Flat fuse 12V 10A
F3 Flat fuse 24V 7,5A
F2 Flat fuse 12V 20A
Item Nomenclature Remark
F2 Flat fuse 24V 20A
F1 Flat fuse 12V 20A
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
X3; X5 X6 X7 X12
1
3
2
4
X4
1
2
4
5
3
6
7
8
10
11
9
12
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
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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