4.2 Turn on the water heater................................................... 25
4.2.1 Switch to ON mode........................................................... 25
4.2.2 Set the water temperature.................................................25
4.3 Turn off the water heater................................................... 25
4.3.1 Turn off for a short period.................................................. 25
4.3.2 Isolate from the mains...................................................... 26
4.3.3 Turn off for a long period................................................... 26
Installation, Maintenance and Service part.............. 27
5 Introduction.............................................................................. 29
5.1 About the water heater..................................................... 29
5.2 Working principle..............................................................29
6 Safety........................................................................................31
6.1 Safety instructions............................................................31
6.2 Instructions on the water heater.........................................32
6.3 Safety devices..................................................................33
6.4 Environmental aspects...................................................... 34
6.4.1 Recycling.........................................................................34
6.4.2 Disposal.......................................................................... 34
7 Water heater............................................................................. 35
7.1 Structure of the water heater............................................. 35
8 Installation............................................................................... 37
8.1 Packaging........................................................................37
8.2 Conditions....................................................................... 37
8.2.1 Ambient conditions........................................................... 37
8.2.2 Maximum floor load.......................................................... 37
8.2.3 Water composition............................................................ 38
8.2.4 Working clearances...........................................................38
8.2.5 Level the water heater...................................................... 38
8.3 Installation diagram..........................................................39
8.4 Water connections............................................................ 40
8.4.1 Cold water connection....................................................... 40
8.4.2 Hot water connection........................................................ 40
8.4.3 Circulation connection....................................................... 40
8.5 Condensate drain............................................................. 41
8.6 Gas connection.................................................................41
8.7 Venting system................................................................ 41
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