Webasto DBW 46 Wartungshandbuch PDF herunterladen (Seite 7)

BBW 46 / DBW 46

2 General Description

201

2. General Description

The water heaters DBW 46 and BBW 46 are used in

combination with the vehicle's own heating system to

– heat the vehicle's passenger compartment

– defrost the vehicle screens and

– preheat water-cooled engines

The water heater operates independent from the vehicle

engine and is connected to the vehicle's cooling system,

electrical system, and fuel system.

The heater designed to the evaporator principle operates

intermittently controlled by the temperature sensor.

Dependent on the coolant temperature the heater

operates in full load with 4.6 kW or in part load with

2.3 kW.

The heaters DBW 46 and BBW 46 basically consist of the

– combustion air fan with intake muffler

– heat exchanger

– burner head with combustion pipe

– circulation pump

For control and monitoring the heater includes a

– control unit (external)

– flame sensor

– glow plug

– temperature sensor

– temperature limiter or temperature fuse

Fuel supply is provided externally by a fuel dosing pump.

1 Fuel connection

2 Flame sensor

3 Glow plug

4 Coolant outlet

5 Temperature limiter

6 Heat exchanger

7 Coolant inlet

8 Temperature sensor

9 Circulation pump

10 Exhaust outlet

11 Combustion air fan

with intake muffler

1 2 3 4 5 6 7 8 9 10 11 12 ... 39 40

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Webasto DBW 46 Wartungshandbuch Seite 7