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 Sealed system data 6
2.3 Burner settings 7
2.4 Flue gas analysis 7
2.5 Water connections 7
2.6 Boiler dimensions 8
3 OIL STORAGE AND SUPPLY SYSTEM 9
3.1 Fuel supply 9
3.2 Burner oil connection 11
4 INSTALLATION 13
4.1 Introduction 13
4.2 Boiler location 13
4.3 Regulations compliance 13
4.4 Heating system design
considerations 13
4.5 Pipework materials 14
4.6 Connections 14
4.7 Preparation for installation 14
4.8 Installing the boiler 15
4.9 Filling the heating system 15
4.10 Before you commission 15
4.11 Completion 15
5 PIPE CONNECTIONS 16
5.1 Water connections 16
5.2 Water connections -
sealed system models 16
5.3 Water connections and
thermostat phial positions 17
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 21
6.8 Inspection and cleaning of trap 21
7 SEALED SYSTEMS 22
7.1 Sealed system requirements 22
7.2 Filling the sealed system 23
7.3 Venting the pump 23
7.4 Pressure relief (safety) valve
operation 23
7.5 System models 24
8 ELECTRICAL 25
8.1 General 25
8.2 Connecting the power supply 25
8.3 Frost protection 26
8.4 Control system wiring diagrams 27
8.5 Boiler control panel wiring diagrams 29
Contents Page 3
9 FLUE SYSTEM AND AIR SUPPLY 30
9.1 Air supply 30
9.2 Plume diverter kit 30
9.3 Conventional ue systems 31
9.4 External vertical conventional
ue (Green System) 31
9.5 External horizontal conventional
ue (Green System) 33
9.6 Flue clearances 34
10 COMMISSIONING 36
10.1 Before switching on 37
10.2 Burner settings:
RDB 2.2 BX burners 37
10.3 Air adjuster disc:
15/21 and 21/26 models only 39
10.4 Switching on 39
10.5 Running the boiler 40
10.6 Balancing the system 40
10.7 Completion 40
10.8 Information for the user 40
11 SERVICING 41
11.1 Checks before servicing 41
11.2 Dismantling prior to servicing 41
11.3 Cleaning the boiler 41
11.4 Cleaning the burner:
RDB 2.2 BX burners 43
11.5 Adjusting the diuser 44
11.6 Air adjuster disc:
15/21 and 21/26 models only 44
11.7 Recommissioning 44
11.8 Burner components 45
12 FAULT FINDING 46
12.1 Boiler fault nding 46
12.2 Burner fault nding - Riello Burners 47
13 SPARE PARTS 48
13.1 Boiler parts list 48
13.2 Sealed system parts list 48
13.3 Riello RDB 2.2 BX burners 49
14 DECLARATION OF CONFORMITY 52
15 HEALTH AND SAFETY INFORMATION 53
15.1 Insulation materials 53
15.2 Sealant and adhesive 53
15.3 Kerosene and Gas Oil fuels 53
16 END OF LIFE INFORMATION 54
17 PRODUCT FICHE 55
18 GUARANTEE 56
A1 WILO YONOS PARA RS RKC
CIRCULATING PUMP 58
A2 WILO-PARA 25-130/7-50/SC-6#GRA
CIRCULATING PUMP 60
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