Operation

be operated with the fuel specified on the namplate.

In the case of a severe build-up of smoke, unusual

combustion noises or fuel smell, the heater is to be put out

of operation by removing the fuse and may only be

restarted after it was inspected by Webasto-trained

personnel.

be operated at least once a month for 10 minutes, with the

vehicle engine cold and at the lowest fan setting. The

heater should be checked annually by a qualified expert,

preferably prior to the heating season commencing.

Webasto will not assume any liability if the installation

instructions and the notes contained therein are not

observed. The same applies to improperly performed

repairs or those where others than genuine replacement

parts have been used. In those cases, the heater's General

Design Certification and thus the General Operating Permit

(homologation) will be invalidated as a consequence.

Claims can only be asserted if the claimant can prove that

the maintenance and safety notes were adhered to.

The heater :must

Liability claims:

Before switching the heater on, set the vehicle heating system to the "warm" position

and the vehicle heater fan to the lowest setting (less power consumption)!

Applicable to Thermo 90 / 90 S -ADR only: The heater is switched on by means of the

switch. A ADR situation (forced shut-down) is initiated when

- the vehicle engine is switched off

- a pumping device is put into operation,

in which case the short after-run period is terminated after 20 seconds.

Thereafter, the electronic control unit is in the "fault lock-out" state. Before the heater can

be restarted, the On/Off switch must be set to "Off".

The disconnect switch (Emergency Stop switch) may only be actuated in an emergency

situation since this will shut the heater down without any after-run being performed

(danger of overheating).

Ident-Nr. 1300309A 3/0011

Operating Instructions

General Information

Maintenance and Safety Information

Dear Webasto Customer !

We assume that the workshop / service center that carried out the installion 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 Thermo 90 / 90 S.

Within the scope of the StVZO (Road Traffic Licensing Act) "General Design Approvals"

laid down by the Federal Office for Motor Traffic exist for the Thermo 90 / 90 S water

heaters.

The installation of the units must be carried out in accordance with the enclosed

installation instructions. The installation must be checked in accordance with the Legal

Provisions for Installation. For details refer to the installation instructions.

The year of the initial operation must be durably marked on the heater's nameplate by

removing the non-applicable years.

When installing the Thermo 90 / 90 S D heater in vehicles for the transport of hazardous

materials, the requirements laid down in ADR 002 and ADR 003 (Technical Guidelines

relating to the ordinance of transporting hazardous materials on the road) must be

fulfilled in addition to those of the StVZO.

at filling stations and tank farms.

in locations where flammable vapours or dust may

accumulate (e.g. in the vicinity of fuel-, coal-, sawdust or

grain depots).

in enclosed spaces (e.g. garages). This should also be

considered when pre-setting heater operating times or

using the Telestart remote control.

exposed to temperatures greater than 120°C (storage

temperature). Exposure to such temperatures may cause

damage to the electronic components.

operated without a minimum level of 20% of good quality

antifreeze in the water of the heating circuit.

The heater must be switched :off

Danger of explosions

and asphyxiation

The heater must benot

Webasto Thermosysteme International GmbH

Postfach 80 - D-82132 Stockdorf - Hotline (01805) 93 22 78

Hotfax (0395) 55 92-353 - http://www.webasto.de

Water Heater

Thermo 90 / 90 S

Webasto Thermo 90

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