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CONTENTS PAGE
1. General ............................................................................................................................4
1.1 Description of the heater ...............................................................................................................4
1.1.1 Packaging material ........................................................................................................................4
1.1.2 Disposal ......................................................................................................................................... 4
1.2 Technical safety equipment ...........................................................................................................5
1.2.1 Control box ....................................................................................................................................5
1.3 Technical description .....................................................................................................................6
1.3.1 Dimensions .................................................................................................................................... 6
1.3.2 Burners ..........................................................................................................................................8
1.3.3 Technical data ................................................................................................................................9
1.3.4 Air-proving switch ........................................................................................................................ 11
1.3.5 Gas-pressure switch .................................................................................................................... 12
1.3.6 Setting the burner head ...............................................................................................................13
1.3.7 Setting the air valve .....................................................................................................................14
2. For the installer ............................................................................................................15
2.1 Installation procedure ..................................................................................................................15
2.1.1 Installation ...................................................................................................................................15
2.1.2 Water connections .......................................................................................................................15
2.1.2.1 Vented systems ...........................................................................................................................16
2.1.2.2 Unvented systems .......................................................................................................................17
2.1.3 Gas connection ............................................................................................................................19
2.1.4 Flue gas exhaust .........................................................................................................................19
2.1.5 Burner connection .......................................................................................................................19
2.1.6 Electrical connection ....................................................................................................................19
2.2 Commissioning ............................................................................................................................19
2.2.1 Filling the heater ..........................................................................................................................19
2.2.2 Turning on the burner ..................................................................................................................19
2.3 Shutting down .............................................................................................................................. 19
2.4 Usage / temperature control ........................................................................................................19
2.5 Setting the nominal load ..............................................................................................................20
2.6 Conversion to another gas type ...................................................................................................20
2.7 Maintenance ................................................................................................................................20
2.8 Anode ..........................................................................................................................................20
2.9 Descaling ..................................................................................................................................... 21
2.10 Condensation ..............................................................................................................................21
2.11 Spare parts ..................................................................................................................................21
3. For the user. .................................................................................................................22
3.1 Instructions for use ......................................................................................................................22
3.1.1 Lighting the heater ....................................................................................................................... 22
3.1.2 Filling the heater ..........................................................................................................................22
3.1.3 Commissioning ............................................................................................................................22
3.2 Operation ..................................................................................................................................... 22
3.3 Shutting down .............................................................................................................................. 22
3.4 Maintenance ................................................................................................................................22
4. What to do in case of failure .......................................................................................23
4.1 General ........................................................................................................................................ 23
4.2 Fault overview .............................................................................................................................23
5. Warranty........................................................................................................................24
5.1 Guarantee ....................................................................................................................................24
5.2 Guarantee of the tank .................................................................................................................. 24
5.3 Conditions for installation and use ...............................................................................................24
5.4 Exclusions ...................................................................................................................................24
5.5 Range of guarantee ..................................................................................................................... 24
5.6 Claims ..........................................................................................................................................24
5.7 No other guarantee or warranty either expressed or implied is made on
behalf of A.O. Smith Water Products Company. .......................................................................... 24
6. Appendix ................................................................................................................................. 25
6.1 Electrical diagram cof ..................................................................................................................25
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