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Electrical connections
Air Top Evo 3900 / Air Top Evo 5500
74
11
Electrical connections
All lines that are not required must be insulated at their free end.
NOTE:
If the combination or standard timer is used, a touch-sensitive switch may
be installed in the sleeping section to act as a remote control and improved
convenience. The connections must be made as shown in the circuit dia-
grams in Figures 36 and 37.
The electrical connection is made as shown in the system circuit diagram
(Figures 34 to 39).
11.1. Connection for installing the heater in a hazchem vehicle
(ADR)
To install the Air Top Evo 3900 D and Air Top Evo 5500 D heaters in
hazchem vehicles, the requirements of ADR/RID part 9 para. 9.2.4.7 –
Combustion heating systems, must also be satisfied. The electrical connec-
tion is made as shown in the circuit diagram in Figure 35 and 39.
NOTE:
The switch S3 must be installed in such a way that a positive potential is
connected to appropriate input of the control module when a pumping de-
vice is switched on.
IMPORTANT
All ADR functions are ineffective if there is no earth at control unit input
X6/1 when the system is switched on.
The control unit continues to run briefly for a maximum of 40 seconds and
then switches to the "ADR lock-out" operating mode when a positive volt-
age is connected to control unit input X6/1 (auxiliary power take-off on) or
the engine is switched off.
IMPORTANT
In accordance with the regulations of the act governing the road/rail haul-
age of hazardous materials, heaters are only allowed to be taken into serv-
ice with a special manually operated switch fitted in the cab.
If the system is equipped with a combination timer, ensure that contact 4
on the combination timer remains free. The heater can then only be taken
into service using the immediate heat button.
The use of other timers in ADR vehicles is not permitted.
11.2. Heater connection
To connect the wiring harness, remove the control unit cover on the heater
and connected the wiring harness plug to the control unit.
NOTE:
Raise the control unit cover on both sides using a blunt blade (Figure 24
arrows).
Before using the heater for the first time fit the control unit cover to pre-
vent the illegal escape of hot air (heater overheating).
Fig. 24
Removing control unit cover
Installation_Instructions_Air_Top_Evo_3900_5500_de_en_nl.book Page 74 Wednesday, November 3, 2010 11:58 AM