Generac Power Systems 0K8420-A - Page 4

Table of Contents
iv Installation Guidelines for Spark-Ignited Stationary Emergency Generators
Section 4 Ventilation System
4.1 General ................................................................................................................................15
4.2 Outdoor Installation Only ..................................................................................................15
Section 5 Gaseous Fuel Systems
5.1 General ................................................................................................................................17
5.1.1 Fuel System Conversion ..........................................................................................................................17
5.2 Gaseous Fuel Properties ...................................................................................................17
5.2.1 Natural Gas ................................................................................................................................................17
5.2.2 Propane Vapor (LPV) ................................................................................................................................17
5.3 Gaseous Fuel Systems ......................................................................................................17
5.3.1 Natural Gas System ..................................................................................................................................17
5.3.2 LP-Vapor Withdrawal System .................................................................................................................. 18
5.3.3 Drip Leg .....................................................................................................................................................19
5.4 Fuel Pressure Regulators ..................................................................................................19
5.4.1 General ......................................................................................................................................................19
5.4.2 Definitions .................................................................................................................................................20
5.4.3 Best Practices ...........................................................................................................................................20
5.4.4 Operating Fuel Pressure ..........................................................................................................................21
5.4.5 Engine Fuel Consumption .......................................................................................................................21
5.4.6 Fuel Pressure Regulator Sizing ...............................................................................................................21
5.4.7 Recommended Fuel Pressure Regulators .............................................................................................22
5.4.8 Primary Fuel Pressure Regulator ............................................................................................................22
5.5 Pipe Sizing Considerations ...............................................................................................22
5.5.1 General ......................................................................................................................................................22
5.5.2 Sizing LP Tanks for Vapor Withdrawal ...................................................................................................24
5.6 Final Operating Test ...........................................................................................................26
5.6.1 Gas Pressure Test Port Location ............................................................................................................26
5.6.2 Final Test Procedure ................................................................................................................................27
Section 6 Electrical System
6.1 General Information ...........................................................................................................29
6.2 Remove Rear Panel and Stub Up Cover ...........................................................................29
6.3 Wiring Installation Safety ...................................................................................................29
6.4 General Wiring Requirements ...........................................................................................29
6.5 High Voltage Connections .................................................................................................29
6.6 Control Wiring Connections ..............................................................................................32
6.6.1 RTS Series Transfer Switch With T1 Fuse/Connection .........................................................................32
6.6.2 RTS Series Transfer Switch Without T1 Fuse/Connection ...................................................................33
6.6.3 Two-Wire Start ..........................................................................................................................................33