Webasto Air Top 3500 Mounting the Heater
When mounting the Air Top 3500/5000 heater, the M 6 nuts must be tightened to a torque of 6 Nm +1 Nm. The mounting dimensions as well as the space required for the performance of servicing work are shown in the installation drawing (Fig. 1). The specified horizontal and axial angles of inclination must not be exceeded (Fig. 2).
The Webasto Air Top 3500/5000 air heaters are designed to provide the following features:
- for the heating of driver’s cabs, boats, trucks, small buses, vans and ambulance vehicles
- defrosting the vehicle’s windows.
The heaters operate independently of the vehicle engine and are connected to the fuel tank and the electrical system of the vehicle. They can be used in vehicles with water-cooled or aircooled engines.
Webasto Technical Data
Unless tolerances are shown within the technical data table, a tolerance of ± 10% applies at an ambient temperature of +20°C and at the rated voltage and conditions.
Electrical Components: Control unit, motor, fuel metering pump, light bulb in the digital timer* and pencil-type glow plug/flame detector are designed either for 12-volt or 24-volt operation. The digital timer*, temperature limiter and temperature sensor are voltage-independent components. * Presetting of heater operating times is not possible for TRS-operation.
Fuel for AT 3500/5000 B (Petrol):
The fuel specified by the vehicle manufacturer is suitable as fuel for the heater.
Fuel for AT 3500/5000 D (Diesel/Fuel Oil EL):
The Diesel fuel specified by the vehicle manufacturer is suitable as fuel for the heater. Also EL class fuel oil – not, however, L type fuel oil – can be used provided it conforms to the usual quality on the German market in accordance with DIN 51603. Any negative effect caused by additives is not known. When the fuel for the heater is drawn from the vehicle’s fuel tank, the vehicle manufacturer’s specifications concerning additives are to be observed. When to changing to cold-resistant fuels, the heater must be operated for approx. 15 minutes to ensure that the fuel pump is filled with the new fuel.
Installation Instructions
Legal Provisions for Installation For testing the heater in accordance with §§ 19, 20 or 21 StVZO (German Road Licensing Regulations) the following regulations are primarily to be observed (§ 22 a StVZO):
NOTE:
These provisions are binding within the scope of the StVZO and should also be observed in countries where no special regulations are in effect!
Within the scope of the StVZO (German Road Licensing Regulations) “General Design Certifications” have been granted by the Federal Office for Motor Traffic for the Air Top 3500/5000 air heaters with the following design approval numbers:
- S 305 Air Top 3500 B
- S 306 Air Top 3500 D
- S 304 Air Top 5000 B
- S 303 Air Top 5000 D
The heaters are approved for heating the passenger compartment and the driver’s cabin, not however, the cargo space for the transport of hazardous materials. When using the heater in special vehicles (e.g. “TRS” vehicles for the transport of hazardous materials) or in vehicles not subject to StVZO regulations (e.g. ships) all regulations that may be locally applicable are to be complied with. When installing the Air top 3500/5000 D heater in vehicles for the transport of hazardous materials the requirements laid down in TRS 002 and TRS 003 (Technical Guidelines relating to the ordinance of transporting hazardous materials on the road) must be fulfilled in addition to those of the StVZO.