Webasto DBW 46 User Manual

Ident-Nr. 770 202 3/9808
Webasto Thermosysteme GmbH
82131 Stockdorf'Kraillinger Str. 5'Telefon (089)8 57 94-0
Telefax (089) 8 57 94-448'Telex 5 23 647 webas d
Operating Instructions
BBW 46 / DBW 46
Maintenance and Safety Information
1. Within the scope of the German StVZO (Road Traffic Licensing Act) a "General
Design Certification" has been granted by the Federal Office for Motor Traffic for the
BBW 46 / DWB 46 water heater.
2. Installation of the heater must be performed in accordance with the Installation
Instructions and is to be entered in the certificate of registration. If available, the approval
certificate or the General Design Certification is to be kept in the vehicle.
3. The year of the initial operation must be durably marked on the heater's nameplate by
crossing out the non-applicable years.
4. Claims can only be asserted if the claimant can prove that the maintenance and
safety notes were adhered to.
8. The heater must be inspected by a qualified expert annually, preferably prior to the
heating season commencing.
9. In the case of severe smoke development for an extended period of time, unusual
combustion noises or fuel smell (gas), the heater must be placed out of operation by
removing the fuse and may only be re-started after it was inspected by Webasto-trained
personnel.
10. Only the fuel specified on the nameplate may be used.
11. The heater should not be exposed to temperatures greater than 85°C (storage
temperature). Exposure to such temperatures will cause permanent damage to the
electronics.
12. Checking the cooling water level is to be performed in accordance with the vehicle
manufacturer's instructions. The water in the heater's heating circuit must contain at
least 20% of a good quality antifreeze.
13. 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.
5. Due to the danger of poisoning or asphyxiation the heater must not be operated
in enclosed spaces (e.g. garages or workshops) without adequate exhaust
extraction. This should be considered when pre-setting heater operating times or
using the Telestart remote control.
6. Due to the danger of explosion the heater must be switched off at filling stations
and tank farms.
7. At locations where combustible vapours or dust accumulation can form (e.g. in
the vicinity of fuel, coal, saw-dust and grain depots and so forth) the heater must
be switched off due to the danger of explosion.
Troubleshooting
In the event of a malfunction, fuses and electrical connections should be checked for
condition and security.
In the event of a malfunction, the heater will shut down in its "fault lock-out" mode, no
visual indication will occur on the display of the timer.
Before consulting an authorised Webasto dealer, try to deactivate the fault lock-out
condition by switching the heater off (heater has to remain in the switched-off state for at
least 1 second) and then on again
.If this action does not correct the malfunction, consult your authorised Webasto dealer.

Webasto DBW 46 Specifications

General

Fuel Type	Diesel
Weight	4.5 kg
Power Supply Voltage	12 V / 24 V
Voltage	12 V
Operating Pressure	1.5 bar
Protection Class	IP X4

Summary

Troubleshooting

Malfunction Handling

Steps for handling malfunctions, including checking fuses and electrical connections, and restarting the heater.

Maintenance and Safety Information

General Design Certification and Installation

Details on German certification, installation requirements, and keeping approval certificates.

Marking and Claims

Requirement for marking the year of initial operation and conditions for asserting claims.

Operation Precautions

Warnings against operating in enclosed spaces, at filling stations, or near combustible materials.

Scheduled Inspection and Emergency Actions

Mandatory annual inspection and immediate action for severe smoke or unusual noises.

Fuel and Temperature Limits

Using specified fuel and avoiding exposure to temperatures above 85°C to prevent damage.

Cooling System and Liability

Checking cooling water, antifreeze, and Webasto's liability regarding installation and repairs.

Timer Operation and Settings

General Timer Functionality

Overview of timer capabilities, including preset times and fast time-setting mode.

Heater Operation Modes

Manual and automatic switching on/off of the heater using the timer.

Setting Time and Day

Procedure for setting the current time and day of the week on the timer.

Programming Heater Start Times

Setting specific start times for the heater in different memory locations.

Recalling and Erasing Preset Times

How to view, select, and delete previously programmed heater start times.

Programming Operating Duration

Setting the desired duration for the heater's operation.

Setting Remaining Operating Time

Adjusting the heater's remaining operation time while it is running.

Telestart T60 Remote Control

General Telestart Functionality

Overview of the Telestart T60 system for remote heater control and its range.

Switching Heater On

Procedure for switching the heater on remotely using the transmitter.

Switching Heater Off

Manual and automatic methods for switching the heater off remotely.

Maintenance and Batteries

Instructions for inserting and checking batteries in the Telestart transmitter.

Telestart Troubleshooting

Solutions for common issues like the transmitter indicator not flashing or receiver not switching on.