1 INTRODUCTION 4
1.1 How a condensing boiler operates 4
1.2 Boiler description 4
1.3 Flue options 4
1.4 Boiler components 5
2 TECHNICAL DATA 6
2.1 Boiler technical data 6
2.2 Burner settings 7
2.3 Flue gas analysis 7
2.4 Water connections 7
2.5 Boiler dimensions 8
3 OIL STORAGE AND SUPPLY SYSTEM 10
3.1 Fuel supply 10
3.2 Burner oil connection 12
3.3 Fitting the burner 13
4 INSTALLATION 14
4.1 Introduction 14
4.2 Boiler location 14
4.3 Regulations compliance 14
4.4 Heating system design
considerations 14
4.5 Pipework materials 15
4.6 Connections 15
4.7 Preparation for installation 15
4.8 Installing the boiler 15
4.9 Filling the heating system 15
4.10 Before you commission 16
4.11 Completion 16
5 PIPE CONNECTIONS 17
5.1 General 17
5.2 15-26 models 17
5.3 26-46 model only 17
5.4 46-70 models 18
5.5 Fitting the dual thermostat 18
6 CONDENSATE DISPOSAL 19
6.1 General requirements 19
6.2 Connections 19
6.3 Pipework 19
6.4 External pipework 19
6.5 Condensate soakaway 20
6.6 Condensate trap 20
6.7 Condensate disposal pipework 20
6.8 Inspection and cleaning of trap 20
7 SEALED SYSTEMS 21
7.1 Sealed system requirements 21
7.2 Filling the sealed system 22
7.3 Venting the pump 22
7.4 Pressure relief (safety) valve
operation 22
8 ELECTRICAL 23
8.1 General 23
8.2 Connecting the power supply 23
8.3 Frost protection 24
8.4 Wiring diagrams 24
Contents Page 3
9 FLUE SYSTEM AND AIR SUPPLY 26
9.1 Air supply 26
9.2 Conventional ue systems 26
9.3 Connecting a conventional ue 29
9.4 Balanced ue systems 29
9.5 Prepare the wall 33
9.6 Flue clearances 34
10 COMMISSIONING 36
10.1 Before switching on 36
10.2 Burner Settings:
RDB 2.2 BX Burners 37
10.3 Burner Settings:
RDB 3.2 Burners 38
10.4 Air adjuster disc:
15-26 and 21-46 models only 39
10.5 Switching on 40
10.6 Running the boiler 40
10.7 Balancing the system 40
10.8 Completion 41
10.9 Information for the user 41
11 SERVICING 42
11.1 Checks before servicing 42
11.2 Dismantling prior to servicing 42
11.3 Cleaning the boiler 42
11.4 Cleaning the burner:
RDB 2.2 BX Burners only 44
11.5 Cleaning the burner:
RDB 3.2 Burners only 45
11.6 Cleaning the burner:
All models 45
11.7 Air adjuster disc:
15-26 and 26-46 models only 45
11.8 Recommissioning 45
11.9 Burner Components 46
12 FAULT FINDING 48
12.1 Boiler fault nding 48
12.2 Burner fault nding -
Riello RDB burners 49
13 SPARE PARTS 50
13.1 Boiler parts list 50
13.2 Riello RDB 2.2 BX Burners
(15-26 & 26-46 models) 51
13.3 Riello RDB 3.2 Burners
(46-70 models) 54
14 DECLARATION OF CONFORMITY 56
15 HEALTH AND SAFETY INFORMATION 57
15.1 Insulation materials 57
15.2 Sealant and adhesive 57
15.3 Kerosene and Gas Oil fuels 57
16 END OF LIFE INFORMATION 58
17 PRODUCT FICHE 59
18 GUARANTEE 60
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