Technical data

HL 90
30
3 To install the heater
The standard scope of delivery of the heater consists of:
– 1 Heater
– 2 Supports
– 2 Clamping bands
– 2 Turnbuckles
– 1 Intake manifold
– 1 Fuel metering pump
The heater must be installed on a flat surface as shown in Figures 1 and 2.
Make the hole pattern as shown in Figure 2.
The floor attachment can be aligned within the specified tolerances by loos-
ening or tightening the turnbuckles and clamping bands.
The screws of the turnbuckles must be tightened to 5 Nm, the bolts (M8) of
the supports must be tightened to 12 Nm.
The installation dimensions and space requirement for service access are
shown in the installation drawing (Figures 1 and 2). The specified horizontal
and axial angles must not be exceeded.
The heater is not allowed to be installed in the passenger compartment.
If the heater is installed on the exterior, ensure that it is fitted in a position
where it is protected from splashing water and spray.
In the case of installations in which the heater surface could be touched in-
advertently or flammable materials could come into contact with the heater
surface, it is obligatory to mount a shield (Webasto accessory) over the heat
exchanger, see Figure 2. For this purpose, the shield is clamped between the
support and the mounting surface in the vehicle, see Figure 3. The position
must be selected so the return pin on the temperature sensor can be reached
through the cut-out in the shield.
The air heater’s heat exchanger can be used for a maximum of 10 years and
must then be replaced by the manufacturer or one of its authorised work-
shops using a genuine spare part. A label must then be affixed to the heater
showing the date of sale of the heat exchanger and the wording “Genuine
spare part”. If exhaust pipes pass through compartments used by people,
the pipes must also be replaced by genuine spare parts after 10 years.
HL90 EA_de_en_fr.book Page 30 Wednesday, June 5, 2013 10:17 AM