Page 1
Contents Page
User Instructions .....................................................................................................................................................................2
Condensing Boiler Installation Requirements ......................................................................................................................4
Condensing Combi Boiler Pre-Installation Requirements...................................................................................................5
1.0 General Information
1.1 Introduction .....................................................................................................................................................
6
1.2 General Requirements .....................................................................................................................................
6
1.3 Combi General Requirements ..........................................................................................................................
7
1.4 Baffle Positioning .............................................................................................................................................
8
1.5 Components ...................................................................................................................................................
9
2.0 Technical Details
2.1 Combi Sequence of Operation Flow Chart ....................................................................................................18
2.2 Dimensions ...................................................................................................................................................19
2.3 Flue Options, Components & Dimensions
......................................................................................................24
2.4 Condensate Disposal ....................................................................................................................................
27
2.5 Technical Data ...............................................................................................................................................
28
3.0 Electricity Supply & Wiring Details
3.1 Dual-Safe Thermostat (Non-Combi Boilers) ...................................................................................................36
3.2 RDB Burner Control Box ...............................................................................................................................
36
3.3 Combi Wiring Details .....................................................................................................................................
37
3.4 Installation of a Combi Optional Programmer (PC1) .......................................................................................
40
3.5 Remote Timers for Combis ............................................................................................................................41
3.6 Optional Programmer (PU1) for Non-Combi Models ......................................................................................
42
4.0 Oil Supply
4.1 One Pipe Gravity System ...............................................................................................................................46
4.2 Two Pipe System ...........................................................................................................................................
47
4.3 De-aerator System ........................................................................................................................................
47
4.4 One Pipe Lift System .....................................................................................................................................
48
5.0 Flues
5.1 Installation of Balanced Flues
.........................................................................................................................49
5.2 Conventional Flues ........................................................................................................................................51
5.3 Low Level Balanced Flue Terminal Positions ..................................................................................................51
6.0 Air Supply for Combustion & Ventilation
6.1 Open Flue Boilers ..........................................................................................................................................
53
6.2 Balanced Flue Boilers – Boilers in a Compartment .........................................................................................
53
7.0 Installation Requirements
7.1 General Requirements ...................................................................................................................................54
7.2 Sealed Systems ............................................................................................................................................
55
7.3 Combi Domestic Hot Water ...........................................................................................................................
56
8.0 Burners
8.1 RDB Burner ...................................................................................................................................................
57
8.2 Oil Pump .......................................................................................................................................................
57
8.3 Electrode Setting ...........................................................................................................................................
58
8.4 Burner Start-Up Cycle ...................................................................................................................................
58
8.5 Air Damper Adjustment .................................................................................................................................
58
9.0 Commissioning & Servicing
9.1 Commissioning..............................................................................................................................................59
9.2 Servicing .......................................................................................................................................................
59
10.0 Burner Fault Finding
10.1 Riello RDB .....................................................................................................................................................60
11.0 Combi Fault Finding
11.1 Central Heating .............................................................................................................................................61
11.2 Domestic Hot Water ......................................................................................................................................
62
12.0 Optional Boiler Mounted Digital Timer
12.1 Operating Instructions ...................................................................................................................................63
13.0 Spares
13.1 RDB 2.2 Spares ............................................................................................................................................
67
13.2 RDB 3.2 Spares ............................................................................................................................................
68
13.3 Pipe Spares ...................................................................................................................................................
69
13.4 Short Parts List – Boiler .................................................................................................................................71
14.0 Your Guarantee, Terms & Conditions .....................................................................................................................72
Commissioning/Service Record .............................................................................................................................73
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