Webasto BBW 46 Installation Instructions Manual page 5

Cable harness
Fuel line
Heater fuel line
Exhaust gas line
Water circuit
Fig 3: Installation example of BBW 46 / DBW 46 heating device in a passenger car (inline integration)
1 Radiator
2 Cooling water thermostat
3 Water pump (of vehicle engine)
4 Vehicle engine with standard equipment
5 Water heater
6 Battery
7 Fuse holder
8 Control unit
9 Relay (for vehicle fan)
10 Regulating valve of vehicle heating
11 Heat exchanger of vehicle heating
12 Vehicle heating fan
13 Switch for vehicle heating fan
14 Fuse bank in vehicle
BBW 46 / DBW 46
15 Digital timer
16 Fuel extractor
17 Fuel metering pump
18 Exhaust silencer
19 Circulating pump
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