Webasto Air Top 3500 Workshop Manual page 28

Air Top 3500/5000
30
15
58
1 6
F3
1 10 11
2
H4
H5 H3
8
6
P
9
12 7 4
X12
S7
31
1 With plus from terminal (15/75) to connection 10:
continuous operation in instant heating as long as ignition is on
Without plus to connection 10:
heating time programmable as required (10 min to 120 min),
default setting 120 min
2 Diagnosis line K
3 Diagnosis line L
4 Input pin (pin 7/connector X7), wire colour on wiring harness: ws/rt):
"ventilate" (fan speed is dependent on control element position)
5 CO adjustment
2
6 NOTE
Connection to terminal 30 enables continuous heating operation with ignition off!
In this case no connection to terminal 15/75 must be made!
Item Nomenclature
A1 Heater
A2 Control unit
B2 Temperature sensor
B3 Temperature limiter
E Glow plug / flame sensor
F1 Fuse 24V 15A / 12V 20A
F3 Fuse max. 15A
H3 LED red (in item P)
H4 Heating symbol in display
(in item P)
H5 Lights (in item P)
M1 Motor
P Combination timer
S6 Switch
S7 Push button switch
X1 Connection 2-pole
Fig. 703 Automatic Switching Circuit Air Top 3500/5000, 12 V/24 V with Combination Timer
F1
X7
4
2
6
0,5mm²
sw
0,5mm² ge/rt
1
0,5mm²
bl
11
8
0,5mm² ws
5
2 1
AT 3500: rt br ge
X1
AT 5000: sw
M
M1
A1
Remark
Air Top 3500/5000
Overheat protection
Flat fuse SAE J 1284
Flat fuse SAE J 1284
Instant heat switch illumination,
standby indication,
operating indicator light
Operating indication
Display and push button switch
illumination
Combustion and heating air fan
Timer and rated value
transmitter
Ventilate
Instant heat switch remote
control
on item A2 (ST B)
5 2
1 2
X8
3
9 10
12
A2
1 2 1 2 1 2 2
ge ws ws
X4 X5
X2 X3
ϑ
E B3 B2
X10
X11
Y1
Wire Gauges
Item Nomenclature
X2 Connection 2-pole
X3 Connection 2-pole
X4 Connection 2-pole
X5 Connection 2-pole
X6 Connection 2-pole
X7 Connection 12-pole
X8 Connection 2-pole
X10 Connection 2-pole
X11 Connection 2-pole
X12 Connection 12-pole
Y1 Dosing pump
7 Circuit Diagrams
30
15
58
3
4
7
2
11
1
X6
1
K
ϑ
S6
< 7.5 m 7.5 - 15 m
2 2
1.5 mm
0.75 mm
2 2
1.0 mm 1.5 mm
2 2
1.5 mm
2.5 mm
2 2
2.5 mm 4.0 mm
2 2
4.0 mm 6.0 mm
Remark
on item A2 (ST V)
on item A2 (ST U)
on item A2 (ST Z)
on item A2 (ST Y)
on item A2 (ST X)
on item A2 (ST 1)
on item Y1
on item P
X1/X2
2
1
X3/X4/X5/X6
2
1
X7
9
7
5
3
1
X8
2 1
X10/X11
1 2
1 2
X12
3
2
1
6, 5, 4
9, 8, 7
12, 11, 10
Wire Colours
bl blue
br brown
ge yellow
gn green
gr grey
or orange
rt red
sw black
vi violet
ws white
703