
1. Important notes
1.1 General safety instructions.................................................................................................................................................4
1.2 Explanation of the symbols ................................................................................................................................................4
1.2.1 Warnings ..........................................................................................................................................................................4
1.2.2 Warning symbols...............................................................................................................................................................4
1.2.3 Information........................................................................................................................................................................5
1.3 On delivery...........................................................................................................................................................................5
1.4 Warranty...............................................................................................................................................................................5
1.5 Manuals................................................................................................................................................................................5
1.6 Regulations, official approvals ...........................................................................................................................................6
1.6.1 Germany §........................................................................................................................................................................6
1.6.2 Austria § ...........................................................................................................................................................................6
1.6.3 Switzerland § ....................................................................................................................................................................6
2. Installation
2.1 Set-up...................................................................................................................................................................................7
2.2 Fitting the thermal insulation............................................................................................................................................10
2.3 Fitting the casing...............................................................................................................................................................11
2.4 Fitting the pedestal casing................................................................................................................................................14
3. Technical information
3.1 Description of the boiler ...................................................................................................................................................16
3.2 UltraGas®(125-1150) technical data..................................................................................................................................17
3.3 Dimensions space / required ............................................................................................................................................20
3.3.1 Overall unit dimensions...................................................................................................................................................21
3.5 Boiler flow resistance........................................................................................................................................................22
3.6 Brief description of the automatic firing device...............................................................................................................23
4. Installation
4.1 Safety instructions ............................................................................................................................................................24
4.2 Requirements on the boilerhouse ....................................................................................................................................24
4.2.1 Room air dependent installation......................................................................................................................................24
4.2.2 Room air independent installation ...................................................................................................................................24
4.3 Flue gas connection, flue gas conduit .............................................................................................................................25
4.4 Condensate drain ..............................................................................................................................................................27
4.4.1 Design variants...............................................................................................................................................................27
4.5 Gas connection..................................................................................................................................................................28
4.6 Hydraulic connection ........................................................................................................................................................28
4.6.1 To be provided on-site.....................................................................................................................................................28
4.6.2 Hydraulic integration .......................................................................................................................................................29
4.6.2.1 Cascades .......................................................................................................................................................................................29
4.7 Sound insulation ...............................................................................................................................................................30
4.8 Electrical connection.........................................................................................................................................................30
4.8.1 Safety measures for EMC according assembly................................................................................................................31
4.8.2 Recommended cable cross sections and
permissible maximum length of cable..............................................................................................................................33
5. Commissioning
5.1 Safety instructions ............................................................................................................................................................34
5.2 Filling the heating system.................................................................................................................................................34
5.3 Water quality......................................................................................................................................................................35
5.3.1 Heating water..................................................................................................................................................................35
5.4 Venting the gas pipe..........................................................................................................................................................36
5.5 Switch on ...........................................................................................................................................................................36
5.6 Gas inlet pressure .............................................................................................................................................................36
5.7 Functional check of combustion cylinder pressure monitoring .....................................................................................36
5.7.1 Check pressure in the combustion cylinder (safety check during commissioning) ............................................................37
5.8 Setting the gas quantity, measuring the CO2(O2) and NOx/CO content in the flue gas .................................................38
5.8.1 UltraGas®(125-720) flue gas measurement ....................................................................................................................38
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