Hamworthy PUREWELL VariHeat he, Installation, Commisioning And Maintenance Instructions

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HAMWORTHY HEATING LTD
Page
PUREWELL VariHeat he 500001155/F
3 iii
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APPENDICES
APPENDIX A
GAS DATA ............................................................................................................................. 40
APPENDIX B
ELECTRICAL CONNECTIONS AND CONTROLS ............................................................... 41
APPENDIX C
FLUE DATA ............................................................................................................................ 43
APPENDIX D
VENTILATION ........................................................................................................................ 46
APPENDIX E
WATER DATA ........................................................................................................................ 48
PICTORIAL AND DIAGRAMATICAL DATA
Figure 2.1
Boiler Delivery ...........................................................................................................................2
Figure 2.3 Boiler Package Dimensions ......................................................................................................3
Figure 2.5 Header Kit Package Dimensions ..............................................................................................3
Figure 3.1 Dimensions and Clearances .....................................................................................................4
Figure 3.2.1 Manifold Dimensions for a 2 Boiler Installation.........................................................................4
Figure 3.2.2 Manifold Dimensions for a 3 Boiler Installation.........................................................................5
Figure 3.2.3 Manifold Dimensions for a 4 Boiler Installation.........................................................................5
Figure 4.2 Gas Connection Point ...............................................................................................................6
Figure 4.3 Flue Connection Point...............................................................................................................7
Figure 4.4 Water Connection Points ..........................................................................................................8
Figure 4.5.1 Boiler Condensate Pipework Installation ..................................................................................9
Figure 4.5.2 Position Of Condensate Connection On Boiler ........................................................................9
Figure 4.5 Electrical Connections ............................................................................................................10
Figure 5.2.1 Rear Water Connections.........................................................................................................11
Figure 7.1.1 Test Point Locations On Gas Valves ......................................................................................12
Figure 7.1.2 Gas System Leak Check ........................................................................................................12
Figure 7.2.1 Gas Isolating Valve .................................................................................................................15
Figure 7.3.1 Boiler Fascia Display ..............................................................................................................15
Figure 7.3.2 Start Up Display Sequence.....................................................................................................16
Figure 7.4.1 Removal of Sample Point Plug ...............................................................................................17
Figure 7.4.2 Combustion Analyser Probe setting .......................................................................................17
Figure 7.4.3 Fan Assembly PV65he & PV85he ..........................................................................................18
Figure 7.4.4 Fan Assembly PV105he & PV125he ......................................................................................18
Figure 8.0 Boiler Fascia Panel .................................................................................................................19
Figure 8.1 Burner Control Logic Diagram ................................................................................................20
Figure 8.5.1 Priority Heat Demands............................................................................................................21
Figure 8.5.2 Temperature Offset and Hysteresis........................................................................................22
Figure 8.5.2.3 Cascade Sequence.................................................................................................................23
Figure 8.5.2.4.1 Dividing Cascade Power.........................................................................................................24
Figure 8.5.3.1 Flow Temperature Control ......................................................................................................25
Figure 8.5.3.2 Power Control .........................................................................................................................25
Figure 8.5.4 CH Heat Curve........................................................................................................................26
Figure 8.5.7.2 Control of Flow Temperature Gradient ...................................................................................26
Figure 8.5.7.3 Step Modulation Control .........................................................................................................27
Figure 8.7 Display Status Screens...........................................................................................................29
Figure 8.7.1.2 Water Temperature Sensor Screen........................................................................................30
Figure 8.7.1.3 Fan Speed and Flame Ionisation Screen ...............................................................................30
Figure 8.7.1.4 Remote Control Input Status Screen ......................................................................................30
Figure 8.7.1.5 Cascade Status Screen ..........................................................................................................30
Figure 8.7.1.6 Cascade Information Screen ..................................................................................................31
Figure 8.7.2.1 Access Status Screen.............................................................................................................31
Figure 9.0 Boiler Wiring Schematic..........................................................................................................32
Figure 11.1 Hot Surface Igniter and Flame Sensing Probe Positions ......................................................36
Figure 11.3 Gas Valve Assembly ..............................................................................................................36
Figure 11.4 Combustion Fan Assembly ....................................................................................................37
Figure 11.5 Casing Assembly ....................................................................................................................37
Figure 11.6 Heat Exchanger Assembly .....................................................................................................38