Electrical Connections - Webasto Air Top 2000 ST Installation Manual

Electrical Connections

8. Electrical Connections
8.1 General Information
Electrical connections are to be carried out in accordance with the circuit diagrams contained in this
installation manual.
Main power leads must have a minimum cross-sectional area of 4.0 mm
should be routed a short as possible. In the case of lead lengths greater than 7.5 m (24.5 ft.), the
existing cables with 4.0 mm
IMPORTANT! All power connections must be fused within 14" of the battery.
When installing the electrical system make sure that the components are installed in protected, dry areas to
prevent corrosion. When leads need to be extended, make sure you use cables with the correct cross-
sectional area!
We recommend a second battery to be installed for the operation of the heater which should, if possible,
not be used for engine starting purposes. To avoid having to charge the battery too often its capacity should
not be too small.
If you have highly sensitive electronic components on board, a special electrical interference suppression may
become necessary. In this case, please consult a competent specialist workshop.
When actuating the battery disconnect switch (if equipped), wait until the after-running period of the heater
has been completed.
Harness Connection
Figure 23. Control and Fuel Pump Electrical Harnesses - Air Top Heater Standard Connection
For shipping purposes, the fuel pump harness may be tucked in the air intake port on the bottom of the
heater. Carefully remove bundled harness from intake port, route it to the desired fuel pump location and
install the two terminals into the supplied connector. The fuel pump wires can be installed in either location
in the connector. There is not a specific wire location.
A fuel pump extension harness may also be used. Connect extension harness directly between original
harness and fuel pump. Refer to Figure 23.
The heater power / control harness can be routed out of the right or left hand side of the heater subject to
individual requirements.
Webasto Thermo & Comfort N.A., Inc.
Air Top 2000 ST - Air Top Evo 40/55
2
wires must be replaced with 6.0 mm
Air Top 2000 ST shown
30
2
(AWG 10 Gauge) and
2
(AWG 8 Gauge) wires.
Extension Harness
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