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Example of a multiple boiler heating circuit with low loss header ...................................... 46
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CIRCULATOR CHARACTERISTICS ........................................................................................................ 47
Boiler resistance graph VGH-80-CH / VGH-90-CO ........................................................... 47
Boiler resistance graph VGH-100-CH ................................................................................ 47
Boiler resistance graph VGH-120-CH / VGH-150-CO ....................................................... 48
Boiler resistance VGH-150-CH .......................................................................................... 48
Boiler resistance graph VGH-180-CH / VGH-200-CO ....................................................... 49
Graph showing the Available Circulation pump head ........................................................ 49
Circulator power cord positioning ...................................................................................... 51
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FLUE GAS AND AIR SUPPLY SYSTEM .................................................................................................. 52
Vent sizing ......................................................................................................................... 52
Vent and air inlet resistance table ...................................................................................... 53
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Approved manufacturers.................................................................................................... 54
PVC / CPVC ................................................................................................................................... 54
Instructions for working with cementing PVC/ CPVC pipe connections ............................ 55
........................................................................................................................................ 56
Flexible polypropylene ....................................................................................................... 56
Combustion air quality ....................................................................................................... 57
Air supply through humid areas ......................................................................................... 57
Air intake/vent connections ................................................................................................ 58
Air inlet pipe materials ........................................................................................................ 58
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Air contamination ............................................................................................................... 61
Vent/air termination - wall .................................................................................................. 67
Determine Location ............................................................................................................ 67
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Vent/air termination - vertical ............................................................................................ 72
Determine location ............................................................................................................. 72
10 ELECTRICAL INSTALLATION ................................................................................................................. 76
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Explanation of the low voltage connections VGH-CH boilers ............................................ 77
Explanation of the high voltage connections VGH-CH boilers .......................................... 78
Explanation of the low voltage connections VGH-CO boilers............................................ 79
Explanation of the high voltage connections VGH-CO boilers .......................................... 80
Ladder/Logic Diagram VGH-CH/CO BOILERS ................................................................. 81
Electrical schematic VGH-CH boilers ................................................................................ 82
Electrical schematic VGH-CO boilers ................................................................................ 84
Sensor availability VGH-CH boilers ................................................................................... 86
Sensor availability VGH-CO boilers ................................................................................... 86
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E93.1901EN032 Installation and Service Manual SlantFin VGH-CH / CO
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