A.O. Smith UB - 70 Boiler User Manual


 
Installation and Service Manual Upsilon-Series
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Content
1 Introduction .............................................................................................................................................4
2 Regulations ............................................................................................................................................7
3 Scope of delivery ....................................................................................................................................9
4 Description ...........................................................................................................................................10
5 Installation and mounting ..................................................................................................................... 11
5.1 Wall-mounted in line .....................................................................................................................12
5.2 Free-standing in line .....................................................................................................................13
5.3 Free-standing back to back ..........................................................................................................14
5.4 Connecting the boiler ...................................................................................................................15
6 Hydraulic and gas line system ..............................................................................................................16
6.1 Heating system ............................................................................................................................16
6.2 Expansion vessel .........................................................................................................................17
6.3 Water quality ................................................................................................................................17
6.4 Gas line ........................................................................................................................................19
6.5 Condensate drain .........................................................................................................................20
7 Flue gas system ...................................................................................................................................22
7.1 Parallel boiler connection .............................................................................................................23
7.2 Concentric boiler connection ........................................................................................................23
7.3 Connecting the flue gas outlet/air supply system .........................................................................24
7.4 Individual flue gas outlet ...............................................................................................................24
7.5 Collective flue gas outlet ..............................................................................................................27
7.6 Condensate vent collective flue gas system ................................................................................30
8 Electrical connections ...........................................................................................................................31
8.1 External controls ..........................................................................................................................33
8.2 Wiring diagram .............................................................................................................................34
9 Boiler control ........................................................................................................................................36
9.1 Operational status ........................................................................................................................37
9.2 Operation .....................................................................................................................................37
9.3 Commissioning .............................................................................................................................38
9.4 Setting the flow temperature with On-Off-control .........................................................................40
9.5 Filling heating system ...................................................................................................................41
10 Basic settings .......................................................................................................................................42
11 Parameters ...........................................................................................................................................44
11.1 Activate factory settings ...............................................................................................................48
12 Put out of operation .............................................................................................................................48
13 Inspection and maintenance ................................................................................................................49
13.1 Maintenance intervals ..................................................................................................................49
13.2 Checks prior to commissioning ....................................................................................................49
13.2.1 Pollution check ..................................................................................................................50
13.2.2 Control O
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.........................................................................................................................51
13.3 Maintenance activities ..................................................................................................................52
13.4 Counter running hours .....................................................................................................................
14 Error report ...........................................................................................................................................55
15 Warranty conditions ..............................................................................................................................56
15.1 General warranty ..........................................................................................................................56
15.2 Heat exchanger warranty .............................................................................................................56
15.3 Conditions for installation and use ...............................................................................................56
15.4 Exclusions ....................................................................................................................................57
15.5 Scope of the warranty ..................................................................................................................57
15.6 Claims ..........................................................................................................................................57
15.7 Obligations of A.O. Smith Water Heaters .....................................................................................57
Annex A Technical specications ................................................................................................................58
Annex B System water additives ................................................................................................................59
Annex C Dimensions ..................................................................................................................................60
Annex D Declaration of conformity .............................................................................................................65