Webasto BBW 46 Installation Instructions Manual page 6

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