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Webasto Thermo 90 ST Operating Instructions Manual
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Webasto Thermo 90 ST Operating Instructions Manual

Webasto Thermo 90 ST Operating Instructions Manual

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Operating Instructions

Thermo 90 S
Thermo 90 ST

General Information

Dear Webasto Customer,
We presume that the principle and mode of operation of your new heater has been explained
to your complete satisfaction by the workshop/service centre which installed the heater. In
these operating instructions we would like to once again provide you with an overview of the
safe use of the heaters.
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 Thermo 90 S water
heaters in accordance with the directives 2001/56/EC (Heating systems) and 72/245/EEC
(EMC) and for the Thermo 90 ST water heaters in accordance with ECE-R 122 (Heatings) and
ECE-R 10 (EMC).
The units must be installed in accordance with the enclosed installation instructions. The in-
stallation must be checked in accordance with statutory installation provisions. Refer to the
installation instructions for more details.
The year in which the heater was used for the first time must be permanently displayed on
the type label by deleting the inapplicable years from the label.
When installing the Thermo 90 S / Thermo 90 ST heater in vehicles for transporting dangerous
goods, the requirements of the ADR in the respectively valid version must also be complied
with in addition to the German Road Traffic Regulations (StVZO).
Danger of explosion
and suffocation!
The heater must not be operated :
• In filling stations and tank farms.
• At locations at which highly flammable gases or dusts can
form, and at locations at which highly flammable liquids
or solid materials are stored (e.g. near fuel, coal and wood
dust, grain warehouses, dry grass and leaves, cardboard ,
paper, etc.)
• In enclosed rooms (e.g. garages), not even via the timer or
Telestart.
The heater must not:
• be exposed to storage temperatures of more than +85 °C.
Otherwise the electronics may suffer permanent damage.
• Be operated without at least 20 % brand name anti-
freeze in the water of the heating circuit.

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Summary of Contents for Webasto Thermo 90 ST

  • Page 1: Operating Instructions

    29/04/2009), there are homologation approvals for the Thermo 90 S water heaters in accordance with the directives 2001/56/EC (Heating systems) and 72/245/EEC (EMC) and for the Thermo 90 ST water heaters in accordance with ECE-R 122 (Heatings) and ECE-R 10 (EMC).

  • Page 2: Operation Of The Heater

    (reduced current consumption)! For ADR vehicles only: The Thermo 90 S / Thermo 90 ST heaters are switched on and of manually with a switch. The use of automatic control systems is prohibited. In class FL vehicles these heaters must not be used during loading and unloading procedures or at the loading points.
  • Page 3 Standard timer Day of the week Operating indicator Time display Alarm indicator Standard timer with alarm Memory location Time Forward Program selection Instant Reverse heating General information The standard timer allows the heater start time to be selected for a period of up to seven days. It is possible to program 3 different starting times, only one of which can be activated.
  • Page 4 Viewing time With ignition switched off: press the button. Programming heater starting time Press the button - program number flashes - set the start time using the but- tons - the day flashes - set the day. If you press the button several times, you can set the program numbers 2 and 3 or go to the time mode.

  • Page 5: Action In The Event Of Faults

    After the heater has been shut down due to a fault lock-out, a coded flashing signal is emit- ted through the operation indicator during the run-on time of the heater. These coded flash- ing signals are designed to assist the authorised Webasto dealer in diagnosing the fault. Heater switches off automatically (= fault lock-out)

  • Page 6: Fault Codes On The Display Of The Combination Or Standard Digital Timer

    Postfach 1410 82199 Gilching Germany Visitors' address: Friedrichshafener Str. 9 82205 Gilching Germany Internet: www.webasto.com The telephone number of each country can be found in the Webasto service center leaflet or the website of the respective Webasto representative of your country.

This manual is also suitable for:

Thermo 90 s