Operating instructions

Contents
1. Introduction
1.1 General Description......................................................................................................... 101
1.2 Legal Provisions .............................................................................................................. 102
1.3 Meaning of Warning, Caution and Note .......................................................................... 102
2. Operating your Webasto Heater
2.1 Switching On.................................................................................................................... 201
2.2 Switching Off.................................................................................................................... 202
2.3 Engine Pre-heating.......................................................................................................... 202
2.4 Boost Heating for Engine and Passenger Compartment ................................................ 202
2.5 Operation with 7-Day Digital Timer Model 1531.............................................................. 202
2.6 7-Day Digital Timer Programming and Operating Instructions........................................ 204
3. Technical Data
3.1 Thermo 230/300 Heater Data.......................................................................................... 301
3.1.1 Thermo 230/300 Heater Dimensions.................................................................... 302
3.2 Coolant Circulation Pump Data ....................................................................................... 303
3.2.1 Coolant Circulation Pump Dimensions ................................................................. 303
4. Installation
4.1 General Information......................................................................................................... 401
4.2 Installation Location......................................................................................................... 401
4.3 Mounting the Heater ........................................................................................................ 401
4.4 Exhaust Pipe Connection ................................................................................................ 401
4.5 Combustion Air Supply .................................................................................................... 402
4.6 Plumbing Into the Coolant System .................................................................................. 403
4.6.1 General Information .............................................................................................. 403
4.6.2 Engine and Passenger Compartment Heating ..................................................... 403
4.6.3 Example of a Heater Installation in a Bus............................................................. 406
4.7 Fuel System..................................................................................................................... 407
4.7.1 General Description .............................................................................................. 407
4.7.2 Fuel Supply ........................................................................................................... 407
4.7.3 Fuel Filter .............................................................................................................. 408
4.8 Wiring Connections ......................................................................................................... 409
4.8.1 General Information .............................................................................................. 409
4.8.2 Timer and Switch Connections ............................................................................. 409
4.8.3 Timer and Switch Installation................................................................................ 409
4.8.4 Wiring Diagram - with Switch................................................................................ 410
4.8.5 Wiring Diagram - with 7-Day Digital Timer Model 1531........................................ 411
4.9 Initial Operation................................................................................................................ 412
Thermo 230/300
Contents
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