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1.1 Models ....................................................................................................................................................7
1.2 Description of the components .........................................................................................................7
2.1 Receipt and storage...............................................................................................................................8
2.2 Positioning and dimensions ...............................................................................................................8
2.3 Removal and reassembly of the front cover ...................................................................................8
3.1 Characteristics of the supply water ....................................................................................................9
3.2 Characteristics of the drain water ......................................................................................................9
3.3 Pipe connections ...................................................................................................................................9
3.4 Diagram of water connections ...........................................................................................................9
3.5 Air inlet and fl ue connections ..........................................................................................................10
3.6 Checks ......................................................................................................................................................11
4.1 Steam distribution in ducts - linear distributors ...........................................................................12
4.2 Positioning the linear distributors in the air ducts ........................................................................12
4.3 Installation of the steam hose ...........................................................................................................13
4.4 Installation of the condensate drain pipe .......................................................................................13
4.5 Checks ....................................................................................................................................................13
5.1 Power supply voltage............................................................................................................................14
5.2 Checking the voltage of the auxiliary circuit transformer ............................................................14
5.3 Main control board .............................................................................................................................14
5.4 Connection diagram, UG45-90.........................................................................................................15
5.5 Connection diagram, UG180 .............................................................................................................16
5.6 Adjusting the humidifi er to different types of gas ........................................................................17
6.1 Boiler maintenance ..............................................................................................................................18
6.2 Cleaning the burner ............................................................................................................................19
6.3 Operating anomalies - checking the ionisation current ..............................................................19
6.4 Heat exchanger .....................................................................................................................................20
6.5 Flue gas temperature sensor ............................................................................................................20
6.6 Water temperature sensor .................................................................................................................20
6.7 Fuses ......................................................................................................................................................20
6.8 Cooling fan ...........................................................................................................................................20
7.1 Operating principle ...............................................................................................................................21
8.1 Thermal-gas supply characteristics ...................................................................................................22
8.2 Flue gas values according to the heat input ..................................................................................22
8.3 Dimensions ...........................................................................................................................................23
8.4 Weights ...................................................................................................................................................24
8.5 Rating plate............................................................................................................................................24
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