A.O. Smith DRE 52, Installation, User And Service Manual

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Installation, Maintenance and Service part.............. 23
5 Introduction.............................................................................. 25
5.1
About the water heater..................................................... 25
5.2 Working principle..............................................................25
6 Safety........................................................................................27
6.1
Safety instructions............................................................27
6.2 Instructions on the water heater.........................................28
6.3 Safety devices..................................................................29
6.4 Environmental aspects...................................................... 31
6.4.1 Recycling.........................................................................31
6.4.2 Disposal.......................................................................... 31
7 Water heater............................................................................. 33
7.1
Structure of the water heater............................................. 33
8 Installation............................................................................... 35
8.1
Packaging........................................................................35
8.2 Conditions....................................................................... 35
8.2.1 Ambient conditions........................................................... 35
8.2.2 Maximum floor load.......................................................... 35
8.2.3 Water composition............................................................ 36
8.2.4 Working clearances........................................................... 36
8.3 Installation diagram.......................................................... 37
8.4 Water connections............................................................ 37
8.4.1 Cold water connection....................................................... 37
8.4.2 Hot water connection........................................................ 38
8.4.3 Circulation connection....................................................... 38
8.5 Electrical connections........................................................ 38
8.5.1 Preparation......................................................................39
8.5.2 Mains power.................................................................... 40
8.5.3 Finalization...................................................................... 40
8.6 Commissioning.................................................................41
8.6.1 Filling..............................................................................41
8.6.2 Turn on the water heater................................................... 41
8.7 Decommisioning...............................................................42
8.7.1 Turn off the water heater................................................... 42
8.7.2 Draining.......................................................................... 42
9 Maintenance.............................................................................. 45
9.1
Preparation......................................................................45
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