Webasto Product N.A., Inc.
28
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Starting the Heater for the First Time
Air Top Evo 3900/5500
12. Starting the Heater for the First Time
After you have installed the heater, bleed the fuel supply system carefully.
NOTE:
As a result of the low fuel consumption the heater must be switched on several times to fill the fuel line and prime the
system.
Conduct a trial of the heater to check all the connections for leaks and to ensure that they are secure. If the heater
suffers a fault during operation, the fault must be located and remedied.
12.1 Control Element Description
Figure 38. Control element
12.2 Ventilation Mode (Optional Connection)
Where desired, a separate switch installed between the white/red tracer or pink wire (X7, Pin-7) and a ground point
allows the user to chose between heating and ventilation mode. Refer to Figure 35, item S6 for connection detail. In
ventilation mode (switch S6 ‘On’) the fan speed is regulated by the control element knob.
Control Element
Changes to the settings
on the control element
are implemented after
a delay.
!
Rotary knob for:
- Switching on and off
- Setting the room temperature
Resetting after a fault cut-out
-
Indicator / Error code display