Hamworthy Purewell VariHeat 70c, Installation, Commissioning And Servicing Instructions

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HAMWORTHY HEATING LTD
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PUREWELL Vari Heat c 500001169/T
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Figure 11.8 Heat Exchanger Assembly PV70c/PV95c/PV110c ................................................................ 47
Figure 11.9 Heat Exchanger Assembly PV140c/PV180c .......................................................................... 48
FIGURES
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Figure A1 Gas Data ................................................................................................................................ 46
Figure B1.1 Electrical Supply ..................................................................................................................... 47
Figure B1.2 External Control Wiring for Multiple Boiler Installation ........................................................... 48
Figure B2.0 In-line Fuse ............................................................................................................................. 49
Figure C1 Flue Data ................................................................................................................................ 50
Figure C1.1 Flue Resistance ...................................................................................................................... 52
Figure C1.2 Open Flue (Natural Draught) B23 Flue System ..................................................................... 52
Figure D1 Mechanical Ventilation Flow Rates ........................................................................................ 53
Figure E1 Water Data ............................................................................................................................. 54
Figure E1.1 Cold Feed and Vent Pipe Sizes ............................................................................................. 54
Figure E1.2 Typical Piping Layouts ........................................................................................................... 55
Figure E1.3.1 Schematic for Single Boiler System ....................................................................................... 57
Figure E1.3.2 Schematic for Single Boiler, Primary Circuit System ............................................................. 57
Figure E1.3.3 Schematic for Single Boiler (External 0~10V) Multi Circuit System ....................................... 58
Figure E1.3.4 Schematic for Multiple Boiler (Cascade) Primary Circuit System .......................................... 58