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 10
3.1 Fuel supply 10
3.2 Burner oil connection 12
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 16
4.9 Filling the heating system 16
4.10 Before you commission 16
4.11 Completion 16
5 PIPE CONNECTIONS 17
5.1 Water connections 17
5.2 Water connections and
thermostat phial positions 17
6 CONDENSATE DISPOSAL 18
6.1 General requirements 18
6.2 Connections 18
6.3 Pipework 18
6.4 External pipework 18
6.5 Condensate soakaway 19
6.6 Condensate trap 19
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
7.5 15/21 sealed system kit 22
7.6 21/26 sealed system kit 24
7.7 26/36 & 36/46 sealed system kit 25
8 ELECTRICAL 26
8.1 General 26
8.2 Connecting the power supply 26
8.3 Frost Protection 27
8.4 Control system wiring diagrams 28
8.5 Boiler control panel wiring diagrams 30
Contents Page 3
9 FLUE SYSTEM AND AIR SUPPLY 31
9.1 Air supply 31
9.2 Plume diverter kit 31
9.3 Conventional ue systems 32
9.4 External vertical conventional ue
(Green System) 32
9.5 External horizontal conventional ue
(Green System) 34
9.6 Flue clearances 35
10 COMMISSIONING 37
10.1 Before switching on 38
10.2 Burner settings:
RDB 2.2 BX burners 38
10.3 Burner settings:
RDB 3.2 burners 40
10.4 Air adjuster disc:
15/21 and 15/26 models only 41
10.5 Switching on 41
10.6 Running the boiler 42
10.7 Balancing the system 42
10.8 Completion 42
10.9 Information for the user 42
11 SERVICING 43
11.1 Checks before servicing 43
11.2 Dismantling prior to servicing 43
11.3 Cleaning the boiler 43
11.4 Cleaning the burner:
RDB 2.2 BX burners 45
11.5 Cleaning the burner:
RDB 3.2 burners 46
11.6 Cleaning the burner - all models 46
11.7 Air adjuster disc:
15/21 and 15/26 models only 46
11.8 Recommissioning 46
11.9 Burner components 47
12 FAULT FINDING 49
12.1 Boiler fault nding 49
12.2 Burner fault nding - Riello burners 50
13 SPARE PARTS 51
13.1 Boiler parts list 51
13.2 Sealed system parts list 51
13.3 Riello RDB 2.2 BX burners 52
13.4 Riello RDB 3.2 burners 55
14 DECLARATION OF CONFORMITY 57
15 HEALTH AND SAFETY INFORMATION 58
15.1 Insulation materials 58
15.2 Sealant and adhesive 58
15.3 Kerosene and Gas Oil fuels 58
16 END OF LIFE INFORMATION 59
17 PRODUCT FICHE 60
18 GUARANTEE 61
A1 WILO YONOS PARA RS RKC
CIRCULATING PUMP 63
A2 WILO-PARA 25-130/7-50/SC-6#GRA
CIRCULATING PUMP 65
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