965-0601C Onan GHAB (spec A) Genset Installation manual
Contents
1. 200 AMP OVER CURRENT PROTECTION DEVICE MAIN TO ALL LOADS RS 12000 GENSET TRANSFER PANEL 200 AMP DISTRIBUTION PANEL FIGURE 4 4 TRANSFER SWITCH WITH 200 AMP LOAD B GND TB1 2 TB1 3 GHAB GENSET RMT START TB1 5 27 2 2 2 2 2 Z RST TRANSFER SWITCH JUMPER TB2 1 TO TB2 2 FIGURE 4 5 RST TRANSFER SWITCH CONTROL CONNECTIONS 4 6 NORMAL POWER SOURCE ABC L1 L2 L3 EMERGENCY POWER SOURCE NEUTRAL BAR ABC L1 L2 L3 ojo jo oiu sn ooll2n 6m GND TERMINAL dO OR 32 5 BIOS Tal o0 21 4T 6813 FIGURE 4 6 RTS GENSET LINE CONNECTIONS BATTERY The genset has a 12 VDC negative ground control and engine cranking system The engine is equipped with an automatic 18 amp nominal bat tery charging circuit A remote battery charger can be connected to the genset to keep the battery charged The battery must be installed in the battery tray and secured to the tray with the strap See Fig ure 4 7 The genset requires a 12 volt BCI Group 26 battery 8 2L x 6 8W x 8 1H inches 208 x 173 x 205 mm to the top of the terminals Battery Capacity2. SCN SCE BC REF ONLY NORMAL POSITION EMERGENCY POSITION LIMIT SWITCH BRIDGE RECTIFIER MAIN TRANSFER OPERATOR CNE LIMIT SWITCHES BATTER CHARGER No 306 4693 Sh2of 2 Rev A Sys ProE Modified 5 01 FIGURE 7 4 RSZ 200 AMP NEMA 1 TRANSFER SWITCH 7 4 KNOCKOUTS 2X 75 NOM CONDUIT BOTTOM Pai PANEL QUILIN BATTERY CHARGER SEE DETAIL B BATTERY CONNECTION KNOCKOUTS 3X 2 1 5 NOM CONDUIT BOTTOM Be 25 4 2X 16 2 2X 88 9 DETAIL A 2X 813 2 DETAIL B 2X DRAWING FIGURE 7 5 RSZ 100 AMP NEMA 3R TRANSFER SWITCH 7 5 GROUND NUTERAL LOAD TERMINAL UTILI ERMINAL POWER WIRING LUG SIZE 8 TO 3 0 AWG PEP POLE GENERATOR TERMINALS a SET START ONTACT N 0 GEN SET BATTERY DIAGRAM UTILITY GEN SET N
3. FIGURE 3 1 GENSET ACCESS FOR MAINTENANCE 3 1 ENGINE EXHAUST The exhaust system of this genset was designed for this engine and is complete Do not modify or add to the exhaust system of this genset EXHAUST GAS IS DEADLY The ex haust system must terminate away from build ing vents windows and doors and sheltered spaces that may not have ample fresh air ven tilation Do not use genset discharge air or engine exhaust for heating a room or enclosed space Engine discharge air and exhaust carry carbon monoxide gas odorless and invis ible which can cause asphyxiation and death Never use engine discharge air or exhaust for heating a room or enclosed space FUEL SYSTEM Fuel systems must be installed by qualified service technicians Improper installa tion presents hazards of fire and improper op eration resulting in severe personal injury or property damage Gensets can be equipped to operate on e GHAB 101 Natural Gas e GHAB 101 LP Vapor requires conversion e GHAB 102 LP Liquid The genset identification plate has been marked to indicate the fuel type to connect to the genset Gaseous fuels are flammable and explosive and can cause severe personal injury or death Do not smoke if you smell gas or are near fuel tanks or fuel burning equipment or are in an area sharing ventilation with such equip ment Keep flames sparks pilot lights electri cal arcs and arc producing equipment and all other sourc
4. ER CIRCUIT SCH REF ONLY NORMAL POSITION EMERGENCY POSITION LIMIT SWITCH BRIDGE RECTIFIER MAIN TRANSFER OPERATOR SCN SCE CNE LIMIT SWITCHES BC BATTER CHARGER No 306 4695 5 2 2 Rev A Sys ProE Modified 5 01 FIGURE 7 6 RSZ 200 AMP NEMA 3R TRANSFER SWITCH 7 6 Cummins Power Generation 1400 73rd Avenue N E Minneapolis MN 55432 1 800 888 6626 763 574 5000 International Use Power Fax 763 528 7229 Generation Cummins is a registered trademark of Cummins Inc
5. SHUTOFF VALVE GAS METER 20 O FIGURE 3 2 TYPICAL NATURAL GAS INSTALLATION TABLE 3 1 NATURAL GAS PIPE CAPACITY CUBIC FEET OF GAS PER HOUR Maximum pipe capacity in cubic feet per hour of 0 60 specific gravity natural gas with a pressure drop of 0 5 inches 1 27 mm WC over the length NOMINAL IRON PIPE SIZE INCHES LENGTH OF PIPE IN FEET eso 770 660 580 580 480 60 480 00 560 555 500 280 3 3 LP VAPOR FUEL SYSTEM Fuel leaks can lead to explosive ac cumulations of gas Natural gas rises and can accumulate under overhanging hoods and in side housings and buildings LP Vapor sinks air and can accumulate inside housings base ments and other below grade spaces Prevent gas leaks and the accumulation of gaseous fuel in the event of a leak NFPA Standard No 58 requires all persons han dling and operating LP Vapor to be trained in proper handling and operating procedures Converting from Natural Gas to LP Vapor The genset leaves the factory set up for natural gas The genset must be converted to use LP Vapor Conversion involves inserting an orifice into the brass elbow See Figure 3 3 and adjusting the car buretor See Figure 3 4 The genset is shipped with a kit containing the orifice for conversion A genset purchased to use Natural Gas or LP Vapor can not be converted to use LP Liquid and one that is pur
6. See Specifications for minimum battery require ments Arcing can ignite the explosive hy drogen gas given off by the battery causing se vere personal injury The battery compartment must be ventilated and must isolate the battery from spark producing equipment Battery Cables To prevent injury due to accidental start up do not connect the battery cables to the battery until the installation has been completed and it is time to start the set See nstallation Review and Startup Electric sparks can ignite gaseous fuel and cause severe personal injury or death Optional battery heater Use the optional thermostatically controlled heater for the battery for more reliable starting in ambient temperatures down to 20 F 28 8 C The heat er fits in the battery tray and must be connected to external AC power The installer is responsible for complying with all local electrical codes See Fig ure 4 1 and Table 4 1 for wiring details 4 8 BATTERY STRAP FIGURE 4 7 BATTERY INSTALLATION 5 Installation Review and Startup INSTALLATION REVIEW Before starting the genset inspect the installation and check off V each of the following questions if it can be answered If a question cannot be checked off review the appropriate section in the manual Is there access to the control switch for starting and stopping the genset Is there access to t
7. 4 Turn the carburetor mixer idle screw from all the way in original factory setting out so that the top of screw is flush with the body of the car buretor See Figure 3 4 FIGURE 3 4 CARBURETOR ADJUSTMENT 3 4 7 WARNING A The engine exhaust from this product contains chemicals known to the State of California to cause cancer birth defects or other reproductive harm Table of Contents TITLE PAGE SAFETY PRECAUTIONS 24452 4 ia INTRODUCTION nee 1 1 Aboutthis Manual RE EE AR EID EAS 1 1 Pre Installation Considerations 1 1 Installation Overview nee ee 1 3 Installation Codes and Safety Recomendations 1 3 2 STEP BY STEP INSTALLATION OUTLINE 2 1 waned eee Meds Mead 2 1 Locating ing ts db tee iS tort aed eb iz 2 1 Genset Clearances uice Sa ad ee 2 2 Preparing the Site 1 ERR a Br a ER 2 3 Moving the Genset nn a ERI E Eee 2 4 Placing the Genset acces ee ee enge 2 5 Connecting the Genset vs urn re i a 2 6 3 MECHANICAL nc he 3 1 LOCO u cee hr ae keke te bas be 3 1 Access sisters CK ROT ee RE ar lee 3 1 Engine Ex
8. CNE LIMIT SWITCHES ER CIRCUIT SCHEMATIC 13 2 DETAIL B 2X OUTLINE DRAWING No 306 4692 Sh 2 of 2 Rev Sys ProE Modified 6 01 FIGURE 7 3 RSZ 100 AMP NEMA 1 TRANSFER SWITCH 7 3 KNOCKOUTS 10X 2 1 5 NOMINAL CONDUIT TOP BOTTOM LEFT amp RIGHT KNOCKOUTS 4X 1 25 1 NOMINAL CONDUIT LEFT amp RIGHT SIDE KNOCKOUTS 8X 75 NOMINAL CONDUIT TOP BOTTOM LEFT 4 RIGHT ACCESS PANEL SEE DETAIL B Carrer CHARGER SEE DETAIL A GROUND NUTERAL LOAD TERMINAL UTILI ERMINAL GENERATOR TERMINALS GEN SET START CONTACT N 0 GEN SET BATTERY DIAGRAM POWER WIRING LUG SIZE 8 TO 3 0 AWG PEP POLE BATTERY CONNECTION odi OUTLINE DRAWING Lu 2X 228 6 2X 88 9 DETAIL A 2X 0 13 2 DETAIL 2X UTILITY GEN SET SN SE BR CNE
9. FOR SERVICE ACCESS 914 4 36 RECOMMENDED BUILDING SIDE ACCESS TO OIL DIPSTICK THIS SIDE BATTERY LOCATION o 6 al TRANSFER SWITCH CONNECTIONS 5 PLACES 190 5 BT 96 a PO 7 5 o GND sa N d AC2 AIR IN A AIR OUT WEIGHT OF GENSET IS 238 8 kg 597 Ibs RMT USTOMER SERVICE 15 PLASTIC SKID LI amp 2 3 9 2 CUSTOMER SERVICE EXHAUST OUTLET ES o zw Zw A gt To z DPD le oe o am NEUTRAL NDUIT A AREA CONDUIT OPENING 10 4 ELECTRICAL STUB UP AREA 2 8 THRU PLASTIC SKID pet 165 1 3 2 100 8 662 L4 e ELECTRICAL STUB UP AREA paced 4 26 11 THRU SHEET METAL BASE Pel 190 5 7 5 ENTER OF GRAVITY AAA ACCESS PANEL BOTH SIDES i 1 i 112 ENTER OF GRAVITY AIR IN 1 L 112 6 81 669 2 26 3 465 7 AIR OUT 18 3 FUEL CONNECTION FEMALE cm 3 4 NPTF NG 8LPV 25 1 4 NPTF LPL 986 2 1 _ 101 6 pe eee gm 30 9 438 171 n 1 1 116 2 232 9 4
10. Se REF ONLY NORMAL POSITION EMERGENCY POSITION LIMIT SWITCH BRIDGE RECTIFIER MAIN TRANSFER OPERATOR SCN SCE CNE LIMIT SWITCHES BC BATTER CHARGER ER CIRCUIT SCH No 306 4694 Sh 2 of 2 Rev A Sys ProE Modified 5 01 KNOCKOUTS 2X 75 NOM CONDUIT BOTTOM ACCESS PANEL QUILIN BATTERY CHARGER 0 SEE DETAIL B BATTERY CONNECTION KNOCKOUTS 3X 2 1 5 NOM CONDUIT BOTTOM 2X 16 2 2X 88 9 DETAIL A 2X 813 2 DETAIL B 2X DRAWING GROUND NUTERAL LOAD TERMINAL UTILI ERMINAL GENERATOR TERMINALS GEN SET STAR CONTACT N O DI AGRA 1 GEN SET BATTERY M POWER WIRING LUG SIZE 8 TO 3 0 AWG PEP POLE UTILITY GEN SET EA EMATIC
11. and Construction Materials Section 178 Rexdale Blvd Rexdale Ontario Canada M9W 1R3 State of California Documents Section P O Box 1015 North Highlands CA 95660 Underwriters Laboratories Inc 3333 Pfingsten Road Northbrook IL 60062 2096 THIS PAGE LEFT INTENTIONALLY BLANK 1 4 2 Step by Step Installation Outline INTRODUCTION This section is a step by step overview of a typical installation This section includes e Locating the site Genset Clearances Preparing the site e Moving the genset Placing the genset e Connecting the genset TRANSFER MAIN SWITCH DISTRIBUTION PANEL SUB PANEL ELECTRIC METER GAS GAS METER SHUTOFF Review this section then refer to the detailed in structions that are given in the following sections for specific procedures and important safety precau tions before starting the installation The installer is responsible for complying with all applicable instal lation codes and safety requirements LOCATING THE SITE These gensets are housed in a weather protective enclosure for installation out of doors Choose a site close to the electric service and fuel supply lines Natural Gas or tanks LP Vapor and LP Liquid Figure 2 1 shows a typical natural gas installation The main distribution transfer switch and sub panels are inside the house ELECTRIC DISCONNECT UNDERGROUND ELECTRIC SERVICE UNDERGROUND GAS SERVICE FIGURE 2 1 TYPICAL GENSET
12. not install this genset inside a building or 1 1 where exhaust can be drawn into or accumulate in an inhabitable area Consider the following factors to determine whether the location is suitable for the genset installation e Install on compacted ground leveled with a lay er of sand or pea gravel e Place near electric service to house e Place near fuel source e Orient so that prevailing winds carry exhaust away from occupied areas e Before installing call for local utilities to mark the location of buried utility services electric gas telephone etc e For natural gas installations verify that the ex isting meter supplies gas at adequate pressure and flow rate At full load the genset alone re quires 239 000 BTU hr If you use natural gas for any other purpose you must consider the total of the genset and household use For ex ample a typical installation at a residence with other gas appliances would need a 420 000 BTU meter e Provide adequate fresh air for the engine Al low sufficient air flow for cooling and ventila tion Figure 1 1 shows airflow patterns through the genset A CAUTION Do not locate the genset in a confined area such as in a three sided niche of a building Insufficient air flow through the genset housing can cause the genset to overheat and shut down resulting in a loss of standby electrical power e Locate away from noise sensitive areas such as bedrooms living room win
13. stub up at the genset to prevent dirt from entering and gas discharging if the gas supply shutoff valve is opened inadvertently See the Specifications section for Natural Gas LP Vapor fuel inlet size NATURAL GAS FUEL SYSTEM The genset requires an adequate fuel supply to op erate correctly at full load The length of the fuel sup ply pipe from the gas service entrance to the genset must be known to determine the correct fuel pipe size Refer to Table 3 1 to find the fuel supply re quirement for your genset Pipe must be minimum of schedule 40 subject to the authority having juris diction Natural Gas Supply Line Size The genset requires up to 240 000 BTU hr 240 cu bic feet hr delivered to the genset inlet at 11 inches 28 mm WC nominal If the meter serves other gas GENSET appliances such as a furnace water heater or stove you must consult with the local natural gas utility to determine whether the natural gas meter is adequate It is important to consider other loads operated from the fuel supply pipe Other loads such as space heating and water heating equipment must also be determined to correctly size the fuel pipe Use the total load requirement of the fuel supply line to de termine the size of the fuel supply pipe Use Table 3 1 to determine the correct pipe size typi cally 1 ft3 nr 21000 BTU hr When the fuel delivery value falls between two col umns use the larger value
14. sure the unit is stable before moving it into position for installation See Fig ures 2 4 and 2 5 The genset weighs 600 Ib 272 kg Dropping the genset can cause severe personal injury or death Keep feet and hands clear when lifting the genset Use a fork lift truck to move the genset to the site you prepared The genset base has fork lift channels Orient the genset so that the access opening for the control is opposite from the building and exhaust is pointed away from windows doors vents and hab itable areas The genset can be transported and moved to the site in a small tilt bed trailer At the site the genset can be carefully slid from the trailer to the ground when the bed is tilted See Figure 2 6 The genset is shipped with oil in the crankcase Do not tip the genset on its side FIGURE 2 4 MOVING THE GENSET INTO POSITION FIGURE 2 6 TILT BED TRAILER 2 4 PLACING THE GENSET Remove the plastic bag covering the genset and collect loose shipped items such as the Operator s Manual While the genset is raised install the tabs to the four corners of the base Use the cap screws and wash ers supplied to secure the tabs to the base The tabs have weld nuts on the bottom The tabs can be turned 90 degrees See Figure 2 7 Place the genset in position at the prepared site on the ground Pound the four spikes into the ground to fix the ge
15. the applicable codes TABLE 4 1 WIRE CONNECTIONS AT THE GENSET WIRE TERMINAL IN GENSET AC Output Circuit Breaker L1 and L2 Neutral Neutral Neutral Neutral Lug Battery DL M TB1 3 Negative Battery Charger TB1 1 Positive Transfer Switch TB1 3 and TB1 5 Remote TB1 9 Black and Battery Pad Heater TB1 10 White Remote Remote Light TBI4 oa above terminal strip COMMON GROUND REMOTE LIGHT 1 4 BATTERY PAD HEATER BATTERY CHARGER 1 10 TB1 1 TB1 9 TB1 3 GND TRANSFER SWITCH TB1 3 REMOTE GND TB1 5 REMOTE START MAIN OUTPUT 2 CIRCUIT BREAKER AC OUTPUT AC NEUTRAL 12 L1 FIGURE 4 1 ELECTRICAL CONNECTIONS ON THE BACK OF THE CONTROL ASSEMBLY 4 2 GROUNDING The generator set power supply wiring and all con nected electrical equipment must be bonded to a common grounding point in accordance with appli cable codes or standards Do not provide an addi tional ground for the genset alone The genset ground terminal TB1 3 is connected to the common ground on the control panel Figure 4 2 illustrates typical system grounding for a 2 pole au tomatic transfer switch ATS Note that the genera tor neut
16. to procedures listed in NFPA 58 or to the UL recommended test proce dure as follows After assembly and before initial operation all fuel system connections hose valves regulators and fittings must be tested and proven free of leaks us ing a soap and water or equivalent solution while the system is under gas or air pressure of at least 1 5 times the supply pressure or 3 psi 20 7 kPa minimum Other approved methods of detecting leaks can be used if appropriate DO NOT make this test with a flame LP fuel presents the hazard of ex plosion or fire which can result in severe per sonal injury or death Do not smoke or allow any flame spark pilot light arc producing equip ment switch or other ignition sources around fuel or fuel components LP LIQUID FUEL SYSTEM Fuel System Provisions Satisfactory performance requires that the LP Liq uid liquid withdrawal models only be supplied at a pressure within the range of 30 to 300 psi 20 7 to 2070 kPa The genset requires 2 41 gal hr 9 1 hr of LP Liquid at full load NFPA 58 Storage and Handling of Liquefied Petro leum Gasses prohibits LP liquid from entering build ing walls TABLE 3 4 LP LIQUID PIPE CAPACITY Based on pressure drop of 1 psi 6 9 kPa LIQUID PETROLEUM LIQUID M3 HR LITER HR PIPE LENGTH FEET M FLOW PETLOW stia heal CFH GPH aoa aoa a 360 10 2 10 38 EN 222 127 0 56 540 15
17. 3 720 20 4 0 76 182 104 825 521 55 32 251 159 1440 40 8 2160 61 1 2880 81 5 80 303 152 46 b 205 129 745 504 14 62 39 227 154 0 227 20 11 92 58 331 224 6 1 3 4 28 18 101 68 11 6 51 32 187 127 735 537 3 4 1 8 16 10 57 39 224 164 2 1 1 2 10 6 4 36 25 143 105 THIS PAGE LEFT INTENTIONALLY BLANK 3 8 4 Electrical Connections AWARNING Electrical connections must be installed by qualified electricians Improper installation presents hazards of electrical shock and improper operation resulting in se vere personal injury or property damage To prevent injury due to accidental start up do not connect the battery cables to the battery until the installation has been completed and it is time to start the set See nstallation Review and Startup Section 5 Automatic startup of the genset while performing maintenance or service can cause severe personal injury or death Push the control switch to Off and disconnect the nega tive battery cable from the battery to keep the genset from starting up while working on it CONDUIT Stranded conductors and flexible conduit must be used for connections to take up movement of the genset The control panel has two access holes for flexible conduit one hole is 1 2 in dia the other is 1 in dia Refer to the outline drawing Figure 7 1 for the location of these holes in the control panel and for t
18. 6 at 1 PLASTIC SKID BASE SECTION 594 ANCHORING SPIKE amp PLATE 23 4 PLACES 1143 45 ln 214 8 ELECTRICAL STUB UP AREA 9 6 THRU SHEET METAL BASE ELECTRICAL STUB UP AREA ACCESS PANEL AND HOLE PLUG THRU PLASTIC PALLET 863 6 34 ProE0500_3294 rev B FIGURE 7 1 GHAB OUTLINE DRAWING 7 1 VR2 BATTERY CHARG ACI B NOTES ALL NOTED GROUNDS ARE ATTATCHED AT ONE POINT LK LBTI 1 12 4 BI gu Mi C Starter Battery 1 11 COMMUNICATIONS Motor SEE NOTE SEE NOTE lt P4 5 PI I6 gt Start Sol Output Starter 2 solenoid NEUTRAL K ACTUATOR WHITE GND TO Al2 Voltage Sense Input 1 TI TOA Al2 BLOCK GND GOVERNOR TIE TOA CUSTOMER CONNECTION 120 VAC INPUT PI 18 IGN Output Switch Light Output Local Stop Input Local Start Input Control Gnd 85 Voltage Sense Gnd 89 Je Control Power Input 8 6 Tl con 81 SEE S2 LOGIC DETAIL 30 PM 2 SI I PI 13 LOP Input 3 gt 5 L
19. Manual ION Onon Installat GHAB 965 0601C 3 2003 Printed in U S A Supplement 965 1079 Date 2 2004 Insert with Title GHAB Installation Manual Number 965 0601C PURPOSE This publication adds supplementary information to the following page of the GHAB Installation Manual Page 3 4 Revised conversion procedure to include brass elbow SUPPLEMENT USE Replace page 3 3 3 4 with the attached Please keep this supplement with the Installation Manual 965 0601C Redistribution or publication of this document by any means is strictly prohibited NATURAL GAS FUEL SYSTEM The genset requires an adequate fuel supply to op erate correctly at full load The length of the fuel sup ply pipe from the gas service entrance to the genset must be known to determine the correct fuel pipe size Refer to Table 3 1 to find the fuel supply re quirement for your genset Pipe must be minimum of schedule 40 subject to the authority having juris diction Natural Gas Supply Line Size The genset requires up to 240 000 BTU hr 240 cu bic feet hr delivered to the genset inlet at 11 inches 28 mm WC nominal If the meter serves other gas GENSET appliances such as a furnace water heater or stove you must consult with the local natural gas utility to determine whether the natural gas meter is adequate It is important to consider other loads operated from the fuel supply pipe Other loads suc
20. SITE 2 1 GENSET CLEARANCES The genset must be a minimum of 3 ft 915 mm from combustible material NFPA 37 Leave at least 3 ft 915 mm all around the genset enclosure for access to the inside NEC Art 110 26a Art 110 26b The genset must be at least 5 ft 1524 mm from any opening window door vent etc in the wall and the exhaust must not be able to accumulate in any occupied area See Figure 2 2 2 2 5 FT 1524 MM MIN TO ANY OPENING FIGURE 2 2 GENSET CLEARANCES PREPARING THE SITE If the site is not on level ground prepare an area large enough to easily hold the genset so that it can be mounted level If you add fill to the site be sure to tamp the ground until it is firm and stabilized Prepare a site at least 45 in by 34 in 1143 mm by 864 mm on firm ground Sites on inclines require more area Add a layer of sand or pea gravel deep enough so that you can level the genset See Fig ure 2 3 Install the rigid fuel line manual fuel shut off valve electrical disconnect See Mechanical and Electri cal section for details and the waterproof electrical conduit to the site See Mechanical section for de tails FIGURE 2 3 LEVELING THE GENSET MOVING THE GENSET The genset is heavy 600 16 272 kg and must be handled with care Carefully raise the genset with a forklift or crane Make
21. acity Low ambient temperatures affect the amount of fuel available from the LP tank e Approximately 60 of the fuel in gallons filled in the tank can be effectively used e LP tanks must be fitted with a pressure reduc ing regulator before connection to the genset to prevent fuel system damage e LP tanks must be located at least 10 ft 3048 mm from any source of combustion including the genset TABLE 3 3 REQUIRED LP TANK SIZE IN GALLONS LITERS FOR INDICATED TEMPERATURES WHEN KEPT AT LEAST HALF FULL LOWEST AVERAGE WINTER TEMPERATURE 100 cfh 250 000 BTU hr 2 8 m3 hr 264 MJ hr 150 cfh 375 000 BTU hr WITHDRAWAL RATE 4 2 m3 hr 395 6 MJ hr 200 cfh 500 000 BTU hr 5 7 m3 hr 527 5 MJ hr 300 cfh 750 000 BTU hr 8 5 m3 hr 791 2 MJ hr 32 F 0 C 20 F 7 C 10 F 12 C 250 250 250 400 500 1000 1500 945 945 945 1515 1890 3785 5675 300 400 500 500 1000 1500 2500 1135 1515 1890 1890 3785 5675 9640 400 500 750 1000 1200 2000 3500 1515 1890 2840 3785 7570 13250 4540 750 1000 1500 2000 2500 4000 5000 2840 3785 5675 7570 9460 15140 18925 3 6 0 F 18 C 10 F 23 C 20 29 30 F 34C Testing Fuel System for Leaks Before operating the set test the LP fuel system for leaks Energize the fuel solenoid from a separate 12 volt DC source before testing the fuel system Testing must conform
22. arcing compartment MOVING PARTS CAN CAUSE SEVERE e Make sure there is ample fresh air when oper PERSONAL INJURY OR DEATH AUS HE ia conem Area e Do not wear loose clothing or jewelry near mov BATTERY GAS IS EXPLOSIVE Ing parts suchas tans e Keep hands away from moving parts e Wear safety glasses and do not smoke while servicing batteries e Keep guards in place over fans HS 1 THIS PAGE LEFT INTENTIONALLY BLANK 1 Introduction ABOUT THIS MANUAL This manual is a guide for the installation of the Se ries GHAB generator sets gensets The Step by Step Installation Outline section provides an over view of the basic installation steps The Mechanical and Electrical Connections sections cover most as pects of the installation procedures The nstallation Review and Startup section covers the steps nec essary to place the genset in service Specifications tabulates features of the genset important for instal lation operation and maintenance Refer to the model specific Outline Drawing Specification Bul letin and Data Sheet for more information This manual covers two specs of GHAB gensets e GHAB 101 Natural Gas e GHAB 101 LP Vapor requires conversion e GHAB 102 LP Liquid Withdrawal See the Operator s Manual for operation and main tenance and refer to the Service Manual for service procedures PRE INSTALLATION CONSIDERATIONS The exhaust from this genset contains carbon mon oxide Do
23. chased to use LP Liquid can not be converted to use Natural Gas or LP Vapor Conversion Procedure Natural Gas to LP Va por 1 Remove access panel on the control side of the genset Lift handle up and out then turn count er clockwise swing the access panel down and lift out 2 Remove the elbow following the regulator in the fuel line Figure 3 3 3 Insert the orifice into the elbow smaller end into the elbow first and reinstall the elbow 4 Turn the carburetor mixer idle screw from all the way in original factory setting out so that the top of screw is flush with the body of the car buretor See Figure 3 4 5 Replace access panel Set it in the bottom of the opening swing it up turn the latch clock wise and fold up to secure the panel 3 4 ORIFICE ORIFICE FOR LP VAPOR FIGURE 3 3 NATURAL GAS TO LP VAPOR CONVERSION ADJUSTMENT SCREW CARBURETOR MIXER FIGURE 3 4 CARBURETOR ADJUSTMENT Fuel Pressure High gas supply pressure can cause gas leaks which can lead to fire and severe per sonal injury or death Gas supply pressure must be adjusted to Specifications by qualified per sonnel The gas pressure regulators in each line provide constant gas pressure at the gas mixer under vary ing load conditions There are pressure test ports on both sides of the regulator for measuring supply and regulated fuel pressures natural gas or LP Va por systems When meas
24. connections Contact with electrical equipment can result in severe personal injury or death It is extremely important that bonding and equip ment grounding be done properly done All met al parts that could become energized under nor mal conditions must be properly grounded The transfer switch can be connected to a partial load equal to the capacity of the genset or to the en tire load Refer to Figure 4 3 for a diagram of a par tial load 60 amp connection and to Figure 4 4 for a diagram of an entire load 200 amp connection If the transfer switch is connected to the entire load the load on the genset must be managed so that the capacity of the genset is not exceeded See Power ing Equipment in the Operator s Manual for genset loading details Figures 4 5 shows the Onan RST Transfer Switch to genset control connections and Figure 4 6 shows the power connections at the RST Transfer Switch Use the National Electrical Code NFPA No 70 as a guide for all AC wiring connections NORMAL STANDBY MAIN SERVICE RS 12000 GENSET ENTRANCE PANEL 200 60 AMP RST TRANSFER PANEL AMP 2 1 60 SUB PANEL TO STANDBY LOADS FIGURE 4 3 TRANSFER SWITCH WITH 60 AMP LOAD UTILITY SOURCE NORMAL STANDBY a 200 AMP RST
25. dows and neigh bors e Secure from vandalism flooding and vehicu lar traffic e Locate away from possible obstructions to ven tilation caused by snow drifts plant growth lawn clippings falling leaves etc FIGURE 1 1 GENSET AIRFLOW 1 2 INSTALLATION OVERVIEW Proper application and installation are essential for reliability and safety Installation The proper installation of the genset and all the other equipment included in the standby power system requires the skill of qualified person nel such as electricians mechanics and plumbers Call an authorized Cummins Onan dealer or distrib utor if questions remain Reliability and Safety It is essential for reliability and safety that these instructions be followed close ly and that the standby system as a whole com plies with all applicable codes at the time it is placed in service Improper application or installation can result in severe personal injury or death and property damage Installation must be made by qualified electrical and mechanical technicians The standby power system must comply with all applicable codes IMPORTANT NOTICE Depending on the location of the genset and its use it may be necessary to ob tain an air quality emissions permit before installa tion begins Check with the local pollution control or air quality authority INSTALLATION CODES AND SAFETY RECOMMENDATIONS The following list of Installation Codes and Safety Recom
26. enset indoors Check for fuel and exhaust leaks and unusual noises while the genset is running under full and in termediate loads To calculate electrical loads see Operation in the Operator s Manual Do not place the genset in service until all leaks have been fixed and operation is satisfactory Before leaving the site if the genset is ready to be placed in service set the control switch to the AUTO position to provide automatic stand by power THIS PAGE LEFT INTENTIONALLY BLANK 5 2 6 Specifications GENERATOR MODEL Rated Power Frequency Voltage Circuit Breaker Rating Speed Natural Gas LP Vapor LP Liquid 10 kW 11 kW 10 kW 60 Hertz 120 240 volts 2 Pole 50 amperes 3600 RPM FUEL CONSUMPTION Hau RENTES EE SEU APER No load Half load Full load 84 000 BTU hr 124 000 BTU hr 190 000 BTU hr Natural Gas Supply Pressure 30 300 psi 207 2070 kPA 3 4 inch NPT 3 4 inch NPT LP Supply Pressure liquid Gas Supply Connection 37 0 ft 3 hr 1 01 gal hr 3 6 V hr 54 0 ft3 hr 1 50 gal hr 4 4 l hr 80 0 ft 3 hr 2 20 gal hr 9 1 l hr ie 1 4 inch NPT ENGINE Onan Performer P224 1 000 cc High Motor Starting Reserve Bore Stroke Displacement Compression Ratio Minimum Cylinder Compression Test Pressure Oil Capacity with filter Intake Valve Clearance Cold Exhaust Valve Clearance Cold Spark Plug Gap Spark Plug Tightening Torque Ignition Timing electronic igni
27. es of ignition well away Keep a type ABC fire extinguisher handy 3 2 Install a dry type fuel filter fuel strainer ahead of the service pressure regulator to protect the sensi tive pressure regulating components and orifices downstream from rust scale and other solid sub stances carried along in the gas stream In all fuel system installations cleanliness is of the upmost importance Make every effort to prevent entrance of moisture dirt excess thread sealant or contaminants of any kind Clean all fuel system components before installing The section of flexible fuel hose supplied with the genset must be used between the engine s fuel sys tem and fuel supply line to protect the fuel system from damage caused by vibration expansion and contraction The fuel hose must be installed accord ing to all applicable codes and standards Gaseous fuel supply system design materials components fabrication assembly installation testing inspection operation and maintenance must comply with the applicable codes See NFPA Standards No 37 No 54 and No 58 Most codes require a manual shutoff valve ahead of a flexible fuel hose The genset has an electric bat tery powered shutoff valve included between the fuel supply and the carburetor The manual valve should be of the indicating type The electric valve should be wired so that the valve is closed when the genset is off Until the genset is connected cap the fuel line
28. h as space heating and water heating equipment must also be determined to correctly size the fuel pipe Use the total load requirement of the fuel supply line to de termine the size of the fuel supply pipe Use Table 3 1 to determine the correct pipe size typi cally 1 ft3 nr 21000 BTU hr When the fuel delivery value falls between two col umns use the larger value SHUTOFF VALVE GAS METER 20 O FIGURE 3 2 TYPICAL NATURAL GAS INSTALLATION TABLE 3 1 NATURAL GAS PIPE CAPACITY CUBIC FEET OF GAS PER HOUR Maximum pipe capacity in cubic feet per hour of 0 60 specific gravity natural gas with a pressure drop of 0 5 inches 1 27 mm WC over the length NOMINAL IRON PIPE SIZE INCHES LENGTH OF PIPE IN FEET eso 770 660 580 580 480 60 480 00 560 555 500 280 3 3 LP VAPOR FUEL SYSTEM 5 Replace the access panel Set it in the bottom of the opening swing it up turn the latch clock Fuel leaks can lead to explosive ac wise and fold up to secure the panel cumulations of gas Natural gas rises and can accumulate under overhanging hoods and in side housings and buildings LP Vapor sinks air and can accumulate inside housings base ments and other below grade spaces Prevent ORIFICE EARLY gas leaks and the accumulation of gaseous fuel PRODUCTION ONLY in the event of a leak NFPA Standard No 58 requires all persons
29. han dling and operating LP Vapor to be trained in proper handling and operating procedures Converting from Natural Gas to LP Vapor The genset leaves the factory set up for natural gas The genset must be converted to use LP Vapor Conversion on early production units involves in serting an orifice into the brass elbow See Figure 3 3 Later production units use a replacement el bow with a smaller ID and is marked with a red dot on the elbow All conversions require adjusting the carburetor See Figure 3 4 The genset is shipped ORIFICE OR NEW ELBOW with a kit containing the orifice for conversion FOR LP VAPOR A genset purchased to use Natural Gas or LP Vapor can not be converted to use LP Liquid and one that FIGURE 3 3 NATURAL GAS TO LP VAPOR is purchased to use LP Liquid can not be converted CONVERSION to use Natural Gas or LP Vapor Conversion Procedure Natural Gas to LP Va ADJUSTMENT SCREW por 1 Remove access panel on the control side of the genset Lift handle up and out then turn count er clockwise swing the access panel down and lift out 2 Remove the elbow following the regulator in the fuel line Figure 3 3 3a For early production units insert the orifice into the elbow smaller end into the elbow first and reinstall the elbow 3b For later production units install the replace P MED ment elbow from the conversion kit that has been marked with a red dot
30. haust Aa do 3 2 Fuel System xx eh eli 3 2 Natural Gas Fuel System scence ER ED HEEL eter as ENS 3 3 LP Vapor Fuel System tes Dee as oe rire 3 4 LP Liguid Fuel System sid O Ba I da P ER ERE 3 7 4 ELECTRICAL CONNECTIONS 4 1 Conduits UA eT mete beds hi ENT ER 4 1 Control Power Connections ria ee 4 1 GIONI e ne 4 3 ee 4 4 Battery assiale erlernten 4 8 5 INSTALLATION REVIEW AND STARTUP 5 1 installalo REVIEW rapine ir ee 5 1 SIanU does acaso Mc 5 1 SPECIFIGATIONS ans re ea ehesten 6 1 DRAWINGS le rh eddie esa Cd d AME 7 1 GHAB Genset Outline Drawing 7 1 GHAB Wiring Diagram spille pria aa 7 2 RSZ Transfer Switch Drawings 2s etes ira aden weeded 7 3 Safety Precautions Thoroughly read the OPERATOR S MANUAL before operating the genset Safe operation and top performance can be obtained only when equipment is operated and maintained proper ly The following symbols in this manual alert you to potential hazards to the operator service person and equipment alerts you to an immediate hazard which will result in severe personal injury or death alerts you to a hazard or un
31. he circuit breaker and con trol fuses for resetting or replacement Is there access to the engine oil drain for drain ing engine oil Are the cooling air inlet and outlet openings free of obstructions Have the AC output connections been made properly Has an approved transfer switch been installed to prevent connecting the genset to the utility Has a properly sized battery been installed Are all fuel connections tight Is fuel supply pressure correct Are electrical and fuel lines properly sepa rated Does engine exhaust disperse away from buildings STARTUP When all installation requirements have been met connect the battery cables to the battery positive cable first 5 1 Batteries give off explosive gases that can cause severe personal injury Do not smoke near batteries Keep flames sparks pi lot lights electrical arcs and arc producing equipment switches and all other ignition sources well away Do not disconnect the battery cables while the genset is cranking or running the arcing can ig nite the explosive battery gases Read through the Operator s Manual and perform the maintenance and pre start checks instructed The genset is shipped from the factory with the proper level of engine oil but should be checked be fore the genset is started Start and operate the genset following all the instructions and precau tions in the Operator s Manual EXHAUST GAS IS DEADLY Do not operate the g
32. he location of two other areas on the sides of the enclosure for alternate access The larger conduit hole is intended for power output wires and the optional battery pad heater wires The smaller conduit hole is intended for the remote start signal wires optional battery charger wires equip ment ground wire and the remote light wire See Table 4 1 for a complete list of all wires including optional wires All external connections except the common or equipment ground are made to the low er terminals of TB1 CONTROL AND POWER CONNECTIONS Remove the access panel from the end of the gen set and the cover from the back of the the control 441 panel Figure 2 9 shows the location of the control panel Connect the AC power output conductors to the bot tom terminals of the circuit breaker and the neutral to the lug on the back of the control assembly Fig ure 4 1 shows the back of the control with the cover removed Figure 4 1 also shows connection points for the transfer switch battery charger equipment ground and optional battery pad heater The National Electrical Code NFPA No 70 should be used as a guide for all AC wiring connections Keep fuel lines physically sepa rated from electrical wiring Wire and fuel line contact can cause severe personal injury or death Faulty grounding can lead to fire and electrocution resulting in severe personal injury or death The genset must be grounded in accordance with
33. mendations applies to the installation and operation of standby gensets This list is for refer ence only and not intended to be inclusive of all ap plicable codes and standards The address of each agency is listed so that copies of the codes may be obtained for reference Installation codes and rec ommendations are subject to change and may vary by location or over time The genset installer bears sole responsibility for following all applicable local codes and regulations This manual contains information that is subject to change For this reason use only the installation manual supplied with the genset for the installation Incorrect installation service or re placement of parts can result in severe personal injury death and or equipment damage Ser vice personnel must be qualified to perform electrical and or mechanical component instal lation TABLE 1 1 INSTALLATION CODES AND SAFETY RECOMMENDATIONS NFPA 70 National Electric Code National Fire Protection Association NFPA 37 Installation and Use of Stationary Combustion 470 Atlantic Avenue Engines and Gas Turbines NFPA 54 National Fuel Gas Code Boston MA 02210 NFPA 58 Storage and Handling of Liquefied Petroleum Gases CSA Electrical Bulletin CSA 22 2 No 100 CSA C22 2 No 14 California Administrative Code Title 25 Chapter 3 Underwriters Laboratories UL2200 Stationary Engine Generator Assemblies Canadian Standards Association Housing
34. n TB1 in the genset control box Refer to each of the sections in this manual for de tailed installation instructions and for important safety precautions Always follow the procedures in the Initial Start and Checks section when the instal lation is complete FLEXIBLE FUEL LINE GENSET FUEL FITTING FIGURE 2 8 FUEL CONNECTION CONTROL BOX FIGURE 2 9 ELECTRICAL CONNECTION 2 6 3 Mechanical LOCATION These gensets are designed for installation out of doors in its weather protective enclosure Factors to consider when deciding where to locate the genset include e Proximity of genset transfer switch loads and fuel supply lines Natural Gas or tanks LPG e Access for maintenance and service e Security from vandalism flooding and vehicu lar traffic e Noise levels and proximity of property lines e Safe dispersal of engine exhaust and cooling air away from buildings habitable areas and people e Possible obstructions to ventilation caused by snowdrifts plant growth lawn clippings falling leaves etc e See Locating the Site in Section 2 ACCESS AND MOUNTING The genset requires 3 ft 915 mm minimum access space on all sides for servicing See Figure 3 1 i 3 FT 915 MM MIN 3 FT 915 MM MIN ALL SIDES ALL SIDES
35. nset in place Do not pound the spikes into any wires or pipes Pounding the spikes into electric gas or telephone service lines can result in se vere personal injury or death Observe the util ity company markings 2 5 FIGURE 2 7 CORNER TABS CONNECTING THE GENSET Fuel Lines Fuel presents the hazard of fire or explosion that can result in severe personal in jury or death Do not smoke or allow any flame spark pilot light or other ignition sources near fuel or in the installation area Read the impor tant safety precautions in the Fuel System sec tion Connect the flexible fuel line included See Fuel System in Section 3 between the 3 4 NPT fitting on the genset and the fuel supply line See Figure 2 8 Electrical Lines Thread the flexible liquid tight conduits through the electrical stub up area in the skid base and connect the clamp on the conduit to the bottom of the genset control box The control has two holes for conduit on its bottom See Figure 2 9 The outline drawing Figure 7 1 shows alternate conduit access areas on the sides of the enclosure Use these areas for entry into the enclosure when underground access is not practical The installer is responsible for complying with all local codes Route the wires from the transfer switch battery charger and battery pad heater through the conduit and connect the wires to the mating terminals o
36. o site GND GND Hour Meter Output EI 6ND o l El P4 Fuel Sol Output Fuel solenoid CONTROL ASSY CONTROL BOX S2 LOGIC ep e 611 1270 sh 1 of 1 Rev B Sys ProE Modified 6 99 FIGURE 7 2 GHAB WIRING DIAGRAM 7 2 SEE DETAIL A LOAD TERMINAL UTILITY TERMINAL KNOCKOUTS 10X 2 1 5 NOMINAL CONDUIT TOP BOTTOM LEFT amp RIGHT GROUND KNOCKOUTS 4X 1 25 1 NOMINAL CONDUIT LEFT amp RIGHT SIDE NUTERAL GENERATOR TERMINALS GEN SET START CONTACT N O GEN SET BATTERY KNOCKOUTS 8X 75 NOMINAL CONDUIT TOP BOTTOM LEFT amp RIGHT DIAGRAM BATTERY CHARGER SEE DETAIL B gt gt BATTERY CONNECTION UTILITY GEN SET ACCESS PANEL 0 4 39 1 REF ONLY gt lt NORMAL POSITION DETAIL A 2X EMERGENCY POSITION LIMIT SWITCH BRIDGE RECTIFIER MAIN TRANSFER OPERATOR SCN SCE
37. ocution of utility workers and damage to equipment An ap proved switching device must be used to pre vent interconnections Use caution when working on live electrical equipment Remove jewelry make sure cloth ing and shoes are dry and stand on a dry wood en platform FUEL IS FLAMMABLE AND EXPLOSIVE e Keep flames cigarettes sparks pilot lights electrical arc producing equipment and switches and all other sources of ignition well away from areas where fuel fumes are present and areas sharing ventilation Fuel lines must be secured free of leaks and separated or shielded from electrical wiring Leaks can lead to explosive accumulations of gas Natural gas rises when released and can accumulate under hoods and inside housings and buildings LPG sinks when released and can accumulate inside housings and base ments and other below grade spaces Prevent leaks and the accumulation of gas ENGINE EXHAUST IS DEADLY e When disconnecting the battery cables always check for a battery charger and disconnect it e Learn the symptoms of carbon monoxide poi first then disconnect the negative battery soning in this manual cable e The exhaust system must be installed in accor e When reconnecting battery cables always re dance with the genset Installation Manual connect the negative battery cable after the positive cable then rereconnect the battery e Do not use engine cooling air to heat a room or charger to reduce
38. ral is connected to the ATS and is NOT bonded to ground at the generator SERVICE ENTRANCE 2 POLE AUTOMATIC TRANSFER SWITCH Contact with electrical equipment can result in severe personal injury or death It is extremely important that bonding and equip ment grounding be properly done All metallic parts that could become energized under ab normal conditions must be properly grounded Typical requirements for bonding and grounding are given in the National Electrical Code All con nections wire sizes etc must conform to the re quirements of the electrical codes in effect at the installation site GENERATOR SET TO UTILITY SERVICE 2 WIRES amp GROUND TO LOAD FIGURE 4 2 TYPICAL SYSTEM GROUNDING ONE LINE DIAGRAM 4 3 TRANSFER SWITCH An approved device must be used to prevent the genset and utility from being interconnected Fig ures 4 2 and 4 3 show the control line load and utility connections to the transfer switch Refer to the manufacturer s transfer switch installa tion manual for important safety precautions and installation instructions Interconnecting the genset and the public utility or any other power source can lead to the electrocution of personnel working on the utility lines damage to equipment and fire An approved switching device must be used to prevent inter
39. rose sez sto 76 72 9 2 58 Recommended Fuel Use clean fresh HD 5 grade liquified petroleum gas or equivalent product consisting of at least 90 per cent propane Commercial liquified petroleum gas fuels may contain more than 2 5 percent butane which can result in poor fuel vaporization and low tank pressure resulting in poor engine starting in low ambient temperatures below 32 F 0 C Satisfactory performance requires that the LP Va por vapor withdrawal models only be supplied at a pressure within the range of 7 15 in 178 381 mm WC water column High LP supply pressure vapor withdrawal models only can cause gas leaks which can lead to fire and severe personal inju ry or death LP Vapor supply pressure must be adjusted to Specifications by qualified person nel LP gas presents the hazard of fire or explosion that can cause severe personal injury or death Do not permit any flame spark arc producing equipment switch pilot light ciga rette or other ignition source near the fuel sys tem Keep an ABC type fire extinguisher nearby LP Vapor Fuel Tank Size If the genset operates on LP Vapor you must supply an LP tank for the fuel supply To assist in the proper selection of the fuel tank follow the guidelines be low e LP tanks are sized by the number of gallons of water they can hold not the amount of fuel they hold LP tanks are generally filled to only 80 of their water cap
40. safe practice which can result in severe personal in jury or death alerts you to a hazard or unsafe practice which can result in personal injury or equipment damage Electricity fuel exhaust batteries and moving parts present hazards which can result in severe person al injury or death GENERAL PRECAUTIONS e Keep ABC fire extinguishers handy e Make sure all fasteners are secure and torqued properly e Keep the genset and its compartment clean Excess oil and oily rags can catch fire Dirt and gear stowed in the compartment can restrict cooling air e Before working on the genset disconnect the negative battery cable at the battery to pre vent starting e Use caution when making adjustments while the genset is running hot moving electri Cally live parts can cause severe personal inju ry or death e Used engine oil has been identified by some state and federal agencies as causing cancer or reproductive toxicity Do not ingest inhale or contact used oil or its vapors Do not work on the genset when mentally or physically fatigued or after consuming alcohol or drugs Carefully follow all applicable local state and federal codes GENERATOR VOLTAGE IS DEADLY Generator output connections must be made by a qualified electrician in accordance with ap plicable codes The genset must not be connected to the public utility or any other source of electrical power Connection could lead to electr
41. tion CRANKING SYSTEM 3 653 inch 90 mm 3 000 inch 76 mm 60 inch 980 7 0 1 75 psi 517 kPa 3 5 quart 3 3 liter 0 005 inch 0 13 mm 0 013 inch 0 33 mm 0 025 inch 0 64 mm 8 Ib for 10 N m 20 BTDC non adjustable Nominal Battery Voltage BCI GP 26 Battery Cranking Capacity Nominal Battery Charging Output 12 volts 530 CCA 0 17 18 amperes Fuse F1 control B input circuit ENCLOSURE 20 amperes Lighted Run OFF Auto Switch Running Time Meter 50 Amp UL Listed Circuit Breaker DC Control Fuse Large User Connection Area ound Attenuated Drip Proof Design less than 70 dBA at 23 ft 7M Easy Service Access Internal Starting Battery Tray and Tie Down Heavy Duty Exterior High performance Fluoropolymer Finish Coat System Fully Enclosed Exhaust Silencer Insulated Heat Shield Ultra Low Noise Pre Mounted UV Resistant Plastic Installation Base Convenient Electrical and Gas Supply Connections Ground Anchor System for Base Included 45 in 1143 mm Length 34 inch 864 mm Width 39 inch 986 mm Height Includ ing installation base Control Features 0 Enclosure Features Exhaust Silencer Installation Features Unit Dimensions Weight Sound Level at Full Load 600 Pounds 272 kg Less than 70 dBA at 23 ft 7 m See Periodic Maintenance for oil filling instructions 6 1 THIS PAGE LEFT INTENTIONALLY BLANK 6 2 S N DISTANCE REQUIRED
42. uring supply pressure the most accurate reading would be on the input side of the solenoid valve See the Specifications section for fuel pressure lim its and fuel consumption Size the fuel line so that GENSET SHUTOFF VALVE SECONDARY LP Vapor and natural gas systems have no more than 2 WC of drop from no load to full load For LP Liquid the maximum permissible fuel supply pressure is 300 psi 2 070 kPa under any operating condition LP Vapor Fuel Supply Line Size Fuel line size depends on the amount of fuel need ed to run the genset at full load at the distance the fuel must be moved The genset requires 85 0 of LP Vapor at full load delivered to the genset inlet at 11 inches 280 mm water column gas pressure Figure 3 5 shows a typical LP Vapor installation and Table 3 2 lists fuel capacity for given distances and pipe size PRIMARY REGULATOR REGULATOR TANK FIGURE 3 5 TYPICAL LP VAPOR INSTALLATION TABLE 3 2 LP VAPOR PIPE CAPACITY CUBIC FEET OF GAS PER HOUR Maximum pipe capacity in cubic feet per hour of LP vapor with a pressure drop of 0 5 inches 1 27 mm WC over the length NOMINAL IRON PIPE SIZE INCHES LENGTH OF PIPE IN FEET ei E ei 2 2668 178 1 sr
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