HL 90
List of Contents
I
List of Contents
1 Introduction
1.1 Scope and Purpose ............................................................................................................................... 101
1.2 Meaning of Warnings, Cautions, and Notes .......................................................................................... 101
1.3 Additional Documentation to be used .................................................................................................... 101
1.4 Safety Information and Regulations....................................................................................................... 101
1.4.1 Legal Provisions for Installation.................................................................................................. 101
1.4.2 General Safety Notes ................................................................................................................. 102
1.5 Corrections and Improvements.............................................................................................................. 103
2 General Description
2.1 Drive ...................................................................................................................................................... 201
2.2 Heat Exchanger ..................................................................................................................................... 201
2.3 Control Unit............................................................................................................................................ 201
2.4 Flame Sensor ........................................................................................................................................ 202
2.5 Glow Plug .............................................................................................................................................. 202
2.6 Temperature Limiter .............................................................................................................................. 202
2.7 Dosing Pump ......................................................................................................................................... 202
3 Functional Description
3.1 Controls ................................................................................................................................................. 301
3.2 Switch On ...............................................................................................................................................301
3.3 Heating Operation.................................................................................................................................. 301
3.3.1 Operation with Room Thermostat (mechanical) ......................................................................... 301
3.3.2 Operation with Switch................................................................................................................. 301
3.3.3 Operation with Timer .................................................................................................................. 301
3.4 Switch Off .............................................................................................................................................. 301
3.5 Ventilation Operation ............................................................................................................................. 301
4 Technical Data
4.1 Electrical Components........................................................................................................................... 401
5 Troubleshooting
5.1 General .................................................................................................................................................. 501
5.2 General Fault Symptoms ....................................................................................................................... 501
6 Functional Checkouts
6.1 General .................................................................................................................................................. 601
6.2 Adjustments ........................................................................................................................................... 601
6.2.1 Adjustment of CO
2
Contents ...................................................................................................... 601
6.3 Components Testing.............................................................................................................................. 601
6.3.1 Temperature Limiter Resistance Check ..................................................................................... 601
6.3.2 Flame Sensor Resistance Check ............................................................................................... 601
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