Webasto HL 24 D User Manual

2
Contents
1 Technical Data .......................................................................................................................................................... 4
1 .1 Technical Data of the Heaters ............................................................................................................................ .4
1.2 Permissible Diameters and Lengths of Connecting Leads ................................................................................ 5
1.3 Overview of heater variants ................................................................................................................................ 5
2 General Description ................................................................................................................................................. 6
2.1 Air Heater HL 24/32 8/D ...................................................................................................................................... 6
2.2 Air Heater Air Top 24/32 ...................................................................................................................................... 7
3 Putting into Service ................................................................................................................................................. 8
3.1 General Notes ...................................................................................................................................................... 8
3.2 Bleeding the Fuel Sypply System ....................................................................................................................... 8
3.3 Checking Proper Combustion ............................................................................................................................. 8
4 Troubleshooting (Quick Diagnosis) ....................................................................................................................... 9
5 Functional Description ..........................................................................................................................................
12
5.1 Sequence of Functions
(Heaters with Electronic Control Units
SG 1561, SG 1561 GT and SG 1561 GS) ................................................ 12
5.1.1 Switching the Heater On ....................................................................................................................... 12
5.1.2 Combustion .......................................................................................................................................... 12
5.1.3 Start•Up Following Control Idle Period ................................................................................................. 12
5.1.4 Switching the Heater Off ....................................................................................................................... 13
5.1.5 Fault Lock-Out ...................................................................................................................................... 14
6 Components ............................................................................................................................................................ 15
6.1 Components of the Heater ................................................................................................................................ 15
6.1.1
6.1.2
6.1.3
6.1.4
6.1.5
6.1.6
6.1.7
6.1.8
6.1.9
6.1.10
Electric Motor (Drive) with Combustion Air
Fan ................................................................................... 15
Combustion Air Fan .............................................................................................................................. 16
Combustion Air Adjusting Screw (Setscrew) ........................................................................................ 16
Fuel Feed With Burner Mat (Vaporizer) ............................................................................................... 17
Glow Plug (Not Applicable to Air Top!) ................................................................................................. 18
Pencil-Tape Glow Plug (Unique to Air Top) .......................................................................................... 18
Flame Detector ..................................................................................................................................... 19
Temperature Limiter and Safety Switch ............................................................................................... 20
Heat Exchanger ...................................................................................................................................
21
Combustion Chamber (Burner Tube) .................................................................................................. 21
6.2 Fuel System ....................................................................................................................................................... 22
6.2.1 Metering Pump ...................................................................................................................................... 22
6.2.2 Fuel System .......................................................................................................................................... 23
6.2.3 Fuel Pickup ........................................................................................................................................... 24
6.2.4 Fuel Filter .............................................................................................................................................. 24
6.2.5 Tank Extracting Device .......................................................................................................................... 24
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Webasto HL 24 D Specifications

General

Brand	Webasto
Model	HL 24 D
Category	Heater
Language	English