Technical data

heaters may only be switched on by means of a special
switch installed in the driver’s cabin and are to be actuated
manually. If the heater is equipped with a combination or
standard digital timer, it must ensured that pin 4 on the
combination or standard digital timer remains unassigned.
The heater can therefore only be started up by means of
the instant heating button.
No other digital timers are allowed to be used in ADR ve-
hicles.
Connection of the Heater
To connect the cable harness, remove the control unit
cover on the heater and connect the cable harness con-
nectors with the control unit.
NOTE:
Lift off control unit cover applying a blunt edge at its side
(see arrows in Fig. 24)
Be sure not to touch the printed conductors of
the control unit.
Prior to starting up the heater for the first time, reinstall the
control unit cover to prevent any undue escaping of heat-
ing air (overheating of heater).
Cable lead-through can optionally be located on the left or right.
To ensure that the cable lead-through in the control unit
cover provides a tight seal, the cable grommet on the
cable harness must be displaced accordingly.
Connection to Supply Voltage
Preferably to be supplied from the vehicle central electrical
system.
To provide the heater with adequate protection, an ad-
ditional flat fuse holder is to be installed (supplied
with the heater). The fuse holder may only be installed
in the vehicle interior.
Connection of Heater Control Element
The cable harness is prepared for connection to the set-
point transmitter (mechanical). To withdraw the connector
pull at the connector housing only.
If the cable harness is pulled, the connector housing is
locked (self-locking).
NOTE:The optical fiber must be in contact with
the rotary knob.As an option, an external tempera-
ture sensor can be installed in the passenger area.
Fig. 24: Removal of Control Unit Cover
Fig. 25: Removal of Mounting Plate of Fuse Holder
F = 10A (24V)
F = 15A (12V)
Fig. 26: Fuse Holder, Installation Position
Fig. 27: Heater Control Knob
Correct!
Fig. 28: Mounting of Heater Control Knob
Incorrect!
Fig. 29: Mounting of Heater Control Knob (incorrect)
Air Top 2000 S
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