Installation and operating instruction
Gas condensing unit WTC-GW 15 … 32-B
83307202 2/2018-05 La
2-196
1 User instructions.............................................................................................................. 6
1.1 Target group.................................................................................................................. 6
1.2 Symbols.......................................................................................................................... 6
1.3 Guarantee and Liability............................................................................................... 7
2 Safety ..................................................................................................................................... 8
2.1 Designated application............................................................................................... 8
2.2 When gas can be smelled ......................................................................................... 8
2.3 What to do if flue gas can be smelled .................................................................... 8
2.4 Safety measures........................................................................................................... 8
2.4.1 Normal operation...................................................................................................8
2.4.2 Electrical connection............................................................................................9
2.4.3 Gas supply..............................................................................................................9
2.5 Disposal ......................................................................................................................... 9
3 Product description ..................................................................................................... 10
3.1 Type key .......................................................................................................................10
3.2 Serial number..............................................................................................................11
3.3 Variations .....................................................................................................................12
3.4 Function........................................................................................................................14
3.4.1 Water, air and flue gas carrying components.............................................. 14
3.4.2 Electrical components....................................................................................... 15
3.4.3 Safety and monitoring functions..................................................................... 16
3.4.3.1 Flow sensor eSTB / flue gas sensor.......................................................16
3.4.3.2 Multifunction sensor VPT...........................................................................17
3.4.4 Combustion control (System SCOT®) ........................................................ 18
3.4.5 Program sequence............................................................................................. 20
3.5 Technical data.............................................................................................................21
3.5.1 Approval data...................................................................................................... 21
3.5.2 Electrical data ..................................................................................................... 21
3.5.3 Ambient conditions............................................................................................ 21
3.5.4 Fuels...................................................................................................................... 21
3.5.5 Emissions............................................................................................................. 22
3.5.6 Rating.................................................................................................................... 23
3.5.7 Hydraulic data..................................................................................................... 24
3.5.8 Flue gas system data......................................................................................... 26
3.5.9 EnEV Product Characteristics ........................................................................ 26
3.5.10 Dimensions........................................................................................................ 27
3.5.11 Weight................................................................................................................ 27
4 Installation ........................................................................................................................ 28
4.1 Installation conditions................................................................................................28
4.2 Mounting the wall bracket........................................................................................28
4.3 Hanging and aligning the unit .................................................................................29
4.4 Remove front panel....................................................................................................29
5 Installation ........................................................................................................................ 30
5.1 Requirements for the heating water ......................................................................30
5.1.1 Water hardness.................................................................................................. 30
5.1.2 Fill water quantity ............................................................................................... 31
