Technical data

Electrical connections Air Top 2000 ST

11 Electrical connections

All the cables that are not required must be insulated.

NOTE:

If the combination timer is used, a touch-sensitive switch may be installed

in the sleeping section to act as a remote control and improved conven-

ience. The connections must be made as shown in the circuit diagrams in

Figure 32.

The electrical connection is made as shown in the system circuit diagram

(Figures 30, 31, 32 and 33).

11.1. Connection for installing the heater in a hazchem vehicle

(ADR)

To install the Air Top 2000 ST D heater in hazchem vehicles, the require-

ments of ADR/RID part 9 para. 9.2.4.7 – Combustion heating systems,

must also be satisfied. The electrical connection is made as shown in the

circuit diagram in Figure 33 or 32.

On vehicles without a power take-off the electrical connection must be

made as shown in the system wiring diagram in Figure33.

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

X6/3 when the system is switched on.

The control unit continues to run briefly for 40 seconds and then switches

to the "ADR lock-out" operating mode when a positive voltage is connect-

ed to control unit input X6/3 (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.

Fig. 23: Removing control unit cover

NOTE:

Raise the control unit cover on both sides using a blunt blade (Figure 23

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).

AT2000ST_Installation_Instructions.book Page 60 Wednesday, May 29, 2013 12:54 PM