Webasto HL 90 Owner's manual

Luftheizgeräte HL 90
HL 90 air heaters
Appareils de chauffage à air chaud HL 90
Riscaldatori ad aria HL 90
Luchtverwarmingsunits HL 90
Ilmalämmitin HL 90
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Operating and servicing manual
HL 90
General information
Dear Webasto Customer!
We assume that the workshop / service centre that carried out the installation
explained to you the operation and principle of functioning of your new heater
to your complete satisfaction. With these operating instructions we would like
to provide you with an overview of the use of the HL 90 heater.
Maintenance and safety instructions
Within the territory governed by European Directive 70/156/EEC and/or EC/
2007/46 (for new vehicle types from 29/04/2009), there are homologation
approvals for the HL 90 heaters in accordance with the ECE-R 122 (Heating)
and ECE-R 10 (EMC).
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The unit must be installed as set out in the supplied installation manual.
The year in which the heater is used for the first time must be permanently re-
corded on the heater’s rating plate by deleting the inapplicable year figures.
Check the openings of the combustion air inlet lines and exhaust pipe opening
and clean them if they are dirty.
Switch off the auxiliary heater before refuelling.
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 workshops
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 pipespass throughcompartmentsusedby people, thepipes must also
be replaced by genuine spare parts after 10 years.
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The heater must not be operated:
In filling stations and tank farms.
In places where explosive vapours or dust may
build up (e.g. near fuel, coal, wood dust or cereal
stores).
Close to inflammable materials such as: Dry
grass and leaves, cardboard packaging, paper,
etc.
In enclosed rooms (e.g. garages), not even via
the timer or Telestart.
For heating compartments in which hazardous
goods are transported.
Without an additional shield over the heat ex-
changer to prevent people or flammable materi-
als touching the surface of the heater inadvert-
ently.
Danger of fire, explosion and
suffocation
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The heater must not:
be exposed to temperatures of more than 85 °C
(storage temperature), otherwise the electronics
may suffer permanent damage.
be blocked by articles of clothing, textiles or sim-
ilar material at the heating air inlet.
cleaned with a power washer.

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The heater must:
be operated with the fuel specified on the rating
plate and at the nominal voltage specified on the
rating plate.
be switched off if considerable quantities of
smoke are generated, in case of unusual com-
bustion noises or if you smell fuel. Switch it off by
removing the fuse. The heater must not be re-
started until the unit has been checked by per-
sonnel duly trained by Webasto.
bechecked byaspecialistatthelatest atthestart
of the heating period.

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Liability:
Failure to follow the installation instructions and
the notes contained therein will lead to all liability
being refused by Webasto. The same applies if
repairs are carried out incorrectly or with the use
of parts other than genuine spare parts. This
invalidates the type approval for the heater and
its homologation / ECE type permit.
Liability claims can only be lodged if the claimant
can prove that he has complied with the servicing
and safety instructions.
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Standard clock
Button for
immediate
heating
1st programmed
time button
Backwards button Display panel Forwards button
Switch-on indicator
(operating indicator)
Time button
2nd programmed time button
Ready indicator
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Operation of the heater
The air heater can be started using a switch, a mechanical cabin thermostat or
a digital timer, according to its equipment.
General
The time when heating starts can be programmed using the digital timer within
a time range from 1 minute to 23 hours 59 minutes.
Theon-time canbe59or29minutesstartingfromtheprogrammedtimeorafter
“immediate heating” is pressed.
Continuous operation is also possible after pressing the “immediate heating”
button, if the unit is connected accordingly.
Operation
The heaterswitches off automatically after ashortrun-on timewhen theignition
is switched off.
Switching on
Manual: Press the immediate heating button .
Automatic: By programming the start of heating.
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Switching off
Press the immediate heating button .
Setting the time/day
Press the Time button at the same time as the Forwards button or
Backwards button .
Checking the time
With the ignition off: Press the Time button .
Programming the start of heating
Press the 1st programmed time button at the same time as the Forwards
button or Backwards button until the required time appears on the dis-
play panel.
Code number 1 remains on display, the Ready indicator lights up.
The 2nd programmed time button can be used for programming another
time. The procedure is the same as for programming the 1st programmed time.
Pressing the 1st programmed time button or 2nd programmed time button
activates this setting and deactivates the other. The set times are retained.
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