Briggs & Stratton 01815-0, 01938-0 User Manual 2

Installation and

Start-Up Manual

Manual de Instalación y

Arranque

Manuel d'Installation et

Démarrage

Questions? Help is just a moment away! Preguntas? La ayuda es justa un momento lejos!

Vous avez des questions? Vous n'avez pas besoin d'aller loin pour trouver de l'aide!

Call: Home Generator Helpline

Llamada: Línea Directa de Generador de Hogar

Appelez: Ligne Directe de Génératrice la Maison -

1-800-743-4115 M-F 8-5 CT

Web: www.homegeneratorsystems.com

10kW / 12kW Rated

Home Generator

Model 01938-0 & 01815-0 Part No. 192385GS Rev. J (07/17/06)

Briggs & Stratton Power Products Home Generator

Installation Manual

TABLE OF CONTENTS
TABLE OF CONTENTS . . . . . . . . . . . . . . . . . . . . . . .	. . . 2
EQUIPMENT DESCRIPTION . . . . . . . . . . . . . . . . . . .	. . . 2
CUSTOMER RESPONSIBILITIES . . . . . . . . . . . . . . . . .	. . . 2
INSTALLER RESPONSIBILITIES . . . . . . . . . . . . . . . . .	. . . 2
SAFETY RULES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 3
INSTALLATION PROCEDURES . . . . . . . . . . . . . . . . .	. . . 4
Unpacking Precautions . . . . . . . . . . . . . . . . . . . . .	. . . 4
Delivery Inspection . . . . . . . . . . . . . . . . . . . . . . . .	. . . 4
Shipment Contents . . . . . . . . . . . . . . . . . . . . . . . .	. . . 4
Required Specialty Tools/Equipment . . . . . . . . . . .	. . . 4
Home Standby Generator Location . . . . . . . . . .	. . 4-5
Fuel and Electrical Inlet Dimensions . . . . . . . . . . .	. . . 5
Lifting the Generator . . . . . . . . . . . . . . . . . . . . . .	. . 5-6
Access Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 6-7
THE GASEOUS FUEL SYSTEM . . . . . . . . . . . . . . . . . .	. 7-8
Fuel Consumption . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 9
Fuel Pipe Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . . 9
KNOW YOUR SYSTEM CONTROL BOARD . . . . . . .	. . 10
Generator AC Connection System . . . . . . . . . . .	. . 11
Grounding the System . . . . . . . . . . . . . . . . . . . . .	. . 11
Utility Control Circuit Connection . . . . . . . . . . .	. . 11
Fault Detection System . . . . . . . . . . . . . . . . . . . . .	. . 11
System Control Panel . . . . . . . . . . . . . . . . . . . . . .	. . 12
BEFORE INITIAL ENGINE START-UP . . . . . . . . . . . .	. . 12
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	. . 12
Battery Connection . . . . . . . . . . . . . . . . . . . . . . .	12-13
Fuel Supply System . . . . . . . . . . . . . . . . . . . . . . . .	. . 13
FUEL SYSTEM SELECTION . . . . . . . . . . . . . . . . . . . . .	. . 13
INITIAL START-UP (NO LOAD) . . . . . . . . . . . . . . . .	. . 14
Engine Adjustment . . . . . . . . . . . . . . . . . . . . . . . .	14-15
AUTOMATIC OPERATION SEQUENCE . . . . . . . . . .	. . 15
SETTING EXERCISE TIMER . . . . . . . . . . . . . . . . . . . .	. . 16
INSTALLATION INSPECTION . . . . . . . . . . . . . . . . . .	. . 16
Fuel Comparison Chart . . . . . . . . . . . . . . . . . . . .	. . 17
Size of Propane Tank Required at Various Temperatures
When Kept at Least Half Full . . . . . . . . .	. . 17

Copyright © 2006 Briggs & Stratton Power Products Group, LLC. All rights reserved. No part of this material may be reproduced or transmitted in any form by any means without the express written permission of Briggs & Stratton Power Products Group, LLC.

EQUIPMENT

DESCRIPTION

This product is intended for use as an optional home standby system which provides an alternate source of electric power and to serve loads such as heating, refrigeration systems, and communication systems that, when stopped during any power outage, could cause discomfort, or the like.This product DOES NOT qualify for emergency standby as defined by NFPA 70 (NEC).

This manual contains installation, startup and adjustment instructions for a Home Standby Generator that supplies 120/240 Volt, single phase, 60Hz devices.The Home Standby Generator may be operated on LP or natural gas fuel.A separate operator’s manual (part number 192384GS) contains specifications, operating and maintenance instructions for these models.

Every effort has been made to ensure that the information in this manual is both accurate and current. However, the manufacturer reserves the right to change, alter or otherwise improve the system at any time without prior notice.

CUSTOMER RESPONSIBILITIES

•Read and follow the instructions given in the Operator’s Manual, especially the section regarding selecting essential circuits.

•Follow a regular schedule in maintaining, caring for and using your Home Standby Generator, as specified in the Operator’s Manual.

INSTALLER RESPONSIBILITIES

•Read and observe the safety rules.

•Refer to the list of recommended UL approved transfer switches that is compatible with the Home Standby Generator elsewhere in the carton.

•Read and follow the instructions given in this Installation and Start-up Manual.

IMPORTANT: If operating the generator below 40°F, it is recommended that a battery and oil warmer be installed. If operating the generator below 32°F, a battery and oil warmer MUST be installed. Both items are available at your local servicing dealer.

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SAVE THESE INSTRUCTIONS

IMPORTANT SAFETY RULES

The safety alert symbol () is used with a signal word (DANGER, CAUTION,WARNING), a pictorial and/or a safety message to alert you to hazards. DANGER indicates a hazard which, if not avoided, will result in death or serious injury. WARNING indicates a hazard which, if not avoided, could result in death or serious injury. CAUTION indicates a hazard which, if not avoided, might result in minor or moderate injury. CAUTION, when used without the alert symbol, indicates a situation that could result in equipment damage. Follow safety messages to avoid or reduce the risk of injury or death.

Hazard Symbols and Meanings

Explosion

Fire

Rotating Parts Electrical Shock

CAUTION

Excessively high operating speeds increase risk of injury and damage to generator.

Excessively low speeds impose a heavy load.

•DO NOT tamper with governed speed. Generator supplies correct rated frequency and voltage when running at governed speed.

•DO NOT modify generator in any way.

CAUTION

Improper treatment of generator can damage it and shorten its life.

•Adequate, unobstructed flow of cooling and ventilating air is critical to correct generator operation.

•Despite the safe design of the Home Standby Generator, operating this equipment imprudently, neglecting its maintenance or being careless can cause possible injury or death.

•Remain alert at all times while working on this equipment. NEVER work on the equipment when you are physically or mentally fatigued.

•DO NOT use the generator or any of its parts as a step. Stepping on the unit can cause stress and break parts.This may result in dangerous operating conditions from leaking exhaust gases, fuel leakage, oil leakage, and so forth.

WARNING

Propane and Natural Gas are extremely flammable and explosive.

Fire or explosion can cause severe burns or death.

•Install the fuel supply system according to applicable fuel-gas codes.

•Before placing the Home Standby Generator into service, the fuel system lines must be properly purged and leak tested.

•After the generator is installed, you should inspect the fuel system periodically.

•NO leakage is permitted.

•DO NOT operate engine if smell of fuel is present or other explosive conditions exist.

•DO NOT smoke around the generator.Wipe up any oil spills immediately. Ensure that no combustible materials are left in the generator compartment. Keep the area near the generator clean and free of debris.

WARNING

Generator produces powerful voltage.

Failure to properly ground generator can result in electrocution.

Failure to isolate generator from power utility can result in death or injury to electric utility workers due to backfeed of electrical energy.

•When using generator for backup power, notify utility company.

•DO NOT touch bare wires or receptacles.

•DO NOT use generator with electrical cords which are worn, frayed, bare or otherwise damaged.

•DO NOT handle generator or electrical cords while standing

in water, while barefoot, or while hands or feet are wet.

•If you must work around a unit while it is operating, stand on an insulated dry surface to reduce shock hazard.

•DO NOT allow unqualified persons or children to operate or service generator.

•In case of an accident caused by electrical shock, immediately shut down the source of electrical power and contact the local authorities. Avoid direct contact with the victim.

•Before performing any maintenance on the generator, disconnect the battery cable indicated by a NEGATIVE, NEG or (-) first.When finished, reconnect that cable last.

•After your Home Standby Generator is installed, the generator may crank and start without warning any time there is a power failure.To prevent possible injury, always set the AUTO/OFF/MANUAL switch to OFF, remove the service disconnect from the disconnect box AND remove the

15 Amp fuse BEFORE working on the equipment.

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INSTALLATION PROCEDURES

Required Specialty Tools/Equipment

•Two 48” lengths of 1” OD pipe (NOT conduit)

•Hole punches for 16ga steel

•Torque screwdriver, 5 to 50 inch-pound range

Unpacking Precautions

The unit is shipped bolted to its mounting pad, ready for installation. Avoid damage from dropping, bumping, collision, etc. Store and unpack carton with the proper side up, as noted on the shipping carton.

CAUTION

Installing the 15A fuse could cause the engine to start.

•Observe that the 15 Amp fuse has been removed from the control panel for shipping.

•DO NOT install this fuse until all plumbing and wiring has been completed and inspected.

Delivery Inspection

After removing the carton, carefully inspect the Home Standby Generator for any damage that may have occurred during shipment.

IMPORTANT: If loss or damage is noted at time of delivery, have the person(s) making delivery note all damage on the freight bill and affix his signature under the consignor's memo of loss or damage. If loss or damage is noted after delivery, separate the damaged materials and contact the carrier for claim procedures. Missing or damaged parts are not warranted.

Shipment Contents

The Home Standby Generator is supplied with:

•Home Standby Generator

•Pre-attached mounting pad

•One 24” flexible hook-up hose

•Installation and start-up manual (P/N 192385GS)

•Operator’s manual(P/N 192384GS)

•Illustrated parts list manual (P/N 193208GS for model 01815 or P/N 193918GS for model 01938)

•Installation checklist (P/N 190840GS)

•Three access door keys

•Four lifting hole plugs

•Oil fill spout

•Touch-up paint

•One spare 15A fuse

•Diagnostic LED kit (diode/plate/decal/pin connectors (2))

Home Standby Generator Location

Before installing generator, consult with homeowner and convey the following guidelines which may affect the desired location.

Generator Clearances

WARNING

Exhaust heat/gases can ignite combustibles or structures causing a fire.

•Keep at least 5 ft. (152 cm) clearance on all sides of generator including overhead.

Place generator in a well ventilated area, which will allow for removal of deadly exhaust gas. DO NOT install generator where exhaust gas could accumulate and enter inside or be drawn into a potentially occupied building. Ensure exhaust gas is kept away from any windows, doors, ventilation intakes or other openings that can allow exhaust gas to collect in a confined area (Figure 1). Prevailing winds and air currents should be taken into consideration when positioning generator.

Using a generator indoors WILL KILL YOU IN MINUTES.

Exhaust contains carbon monoxide, a poison gas you cannot see or smell.

NEVER use in the home ONLY use outdoors and or in partly enclosed far from open windows, areas such as garages. doors, and vents.

General Location Guidelines

•Install the unit outdoors ONLY.

•Place the unit in a prepared location that is flat and has provisions for water drainage.

•Install the unit in a location where sump pump discharge, rain gutter down spouts, roof run-off, landscape irrigation, or water sprinklers will not flood the unit or spray the enclosure and enter any air inlet or outlet openings.

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Figure 1 — Home Standby Generator Clearances

Exhaust

Port

•Install the unit where the location of any services such as phone, electrical, fuel, air conditioning, irrigation, including covered, concealed and underground services will not be affected or obstructed.

•Install the unit where air inlet and outlet openings will not become obstructed by leaves, grass, snow, etc. If prevailing winds will cause blowing or drifting, you may need to construct a windbreak to protect the unit.

•Install the generator as close as possible to the Transfer Switch to reduce the length of wiring and conduit.

•Install the generator as close as possible to the fuel supply to reduce length of pipes.

IMPORTANT: Laws or local codes may regulate the distance to the fuel supply.

The Home Standby Generator is shipped already attached to its mounting pad. Unless mandated by local code, a concrete slab is not required.

If mandated by local code, construct a concrete slab at least 3 inches thick and 6 inches longer and wider than the unit. Attach unit to slab with 1/4” diameter (minimum) masonry anchor bolts long enough to retain the unit.

Fuel and Electrical Inlet Dimensions

Figure 2, below, depicts the location of the fuel piping connector. Also shown is the recommended location for punching holes for attaching the power conduit.

Lifting the Generator

The generator weighs more than 375 pounds. Proper tools, equipment and qualified personnel should be used in all phases of handling and moving the generator.

WARNING

Hazardous Voltage

Contact with power lines can cause electric shock or burn.

Lifting Hazard / Heavy Object

Can cause muscle strain or back injury.

•If lifting or hoisting equipment is used, DO NOT contact any power lines.

•DO NOT lift or move generator without assistance.

•Use lifting pipes as described in the section “Lifting the Generator” in installation manual.

•The unit may shift on the lifting pipes during movement, which can cause injury.

•DO NOT lift unit by roof as damage to generator will occur.

Figure 2 — Generator Fuel and Conduit Attachment Locations, Oil Service Side of Unit

Fuel Piping

Connector

4.5”

Recommended
Conduit Attachment	3/4” NPT
Area

13.5”

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Two 48” lengths of 1” O.D. pipe (supplied by the installer) are required to lift the generator manually. Insert pipes through the lifting holes located near the unit’s base, as shown in Figure 3.

Figure 3 — Location of Lifting Holes

To lift:
Insert
pipe
here	Installer-supplied pipe

You may also lift the unit using a “hook and hoist” method attached to the lifting pipes, provided that you use a spreader bar to ensure that the chains or cables do not touch the generator’s roof.

Retouch any chipped paint with supplied touch-up paint. After paint is dry, and the unit is in place, fill the lifting holes with the supplied lifting hole plugs.

Access Doors

The Home Standby Generator is equipped with an enclosure that has four access doors (Figure 4).The doors are named for a significant component located behind them. Starting with the side that has the fuel connection and proceeding clockwise, the doors are named:

•Oil Service door

•Air Intake door

•Control Panel door

•Battery door

CAUTION

DO NOT operate the Home Standby Generator unless the Oil Service and/or Control Panel doors are installed.

•Failure to install Oil Service and/or Control Panel doors while operating the Home Standby Generator will cause overheating.

Each Home Standby Generator is equipped with three identical keys.These keys fit the locks that secure the Oil Service and Control Panel doors.

Figure 4 — Enclosure Access Doors

Door Lock						Exhaust
Screw						Port
						Fuel
						Inlet				29”
						Lock
						Screw
Air			42”		Door	Battery			Panel	Door
	Intake
				Service			Door
		30”						Control
		Door
			Oil
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To Remove an Access Door:

1.Insert key into lock of access door you wish to remove and turn one quarter turn clockwise.

NOTE: The key is retained in the lock when the locks are open.

2.Grasp door’s lift handle and pull door upwards until security pins are free of lower base.

3.With the security pins free, pull the lift handle outward (away) from the unit while pulling the door down and out of the upper door channel.The door will come free of the generator enclosure.

The Battery door does not have a lock and the Air Intake door does not have a lock or lift handle.The Air Intake door is opened by lifting on the louvers instead of a lift handle. However, you must remove the door lock screws, found directly above the center of the doors.

WARNING

Running engines produce heat.Temperature of exhaust port and nearby areas can reach or exceed 600°F (316°C).

Severe burns can occur on contact.

•DO NOT touch hot surfaces.

•Allow equipment to cool before touching.

To Install an Access Door:

1.Support door by grasping lift handle or louver. Guide top of door into generator enclosure.

2.Lift door up into its upper channel until security pins clear sill of enclosure.

3.Push lower half of door into door recess until it is flush with sides.

4.Seat door by pushing it down until rubber coated security pins engage and door rests on mounting sill.

5.If installing a lockable door, turn key one quarter turn counterclockwise. Remove key.

6.If installing air intake or battery door, replace the door lock screw.

Check to ensure that all the rubber and foam vibration dampers remain in place.This will minimize vibration noise.

THE GASEOUS FUEL SYSTEM

WARNING

Propane and Natural Gas is extremely flammable and explosive.

Fire or explosion can cause severe burns or death.

•LP gas is heavier than air and will settle in low areas.

•Natural gas is lighter than air and will collect in high areas.

•The slightest spark can ignite these fuels and cause an explosion.

The information provided below is to assist gaseous fuel system technicians in planning installations. In no way should this information be interpreted to conflict with applicable fuel gas codes. Consult with your local fuel supplier or Fire Marshall if questions or problems arise.

TO THE INSTALLER: Consult with the Home Standby Generator owner(s) and convey any technical considerations that might affect their installation plans before applying these general guidelines.

The following general rules apply to gaseous fuel system piping:

•The piping should be of a material that conforms to federal and local codes, rigidly mounted and protected against vibration.

•Piping should be protected from physical damage where it passes through flower beds, shrub beds, and other cultivated areas where damage could occur.

•Install the flexible, gaseous hose (supplied) between the Home Standby Generator Fuel Inlet port and rigid piping to prevent thermal expansion or contraction from causing excessive stress on the piping material.

NOTE: Where local conditions include earthquake, tornado, unstable ground, or flood hazards, special consideration shall be given to increase strength and flexibility of piping supports and connections.

CAUTION

The supplied flexible gaseous pipe is not to be installed underground or in contact with the ground.

•The entire flexible gaseous pipe must be visible for periodic inspection and must not be concealed within, contact, or run through any wall, floor, or partition.

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•Piping must be of the correct size to maintain the required supply pressures and volume flow under varying generator load conditions with all gas appliances connected to the fuel system turned on and operating.

•Use an approved pipe sealant or joint compound on all threaded fittings to reduce the possibility of leakage.

•Installed piping must be properly purged and leak tested, in accordance with applicable codes and standards.

WARNING

Propane and Natural Gas is extremely flammable and explosive.

Fire or explosion can cause severe burns or death.

•Before placing the Home Standby Generator into service, the fuel system lines must be properly purged and leak tested.

•NO leakage is permitted.

Consider the following factors when planning to install the fuel supply system:

The Home Standby Generator engine is fitted with a fuel mixer system that meets the specifications of the California Air Resources Board for “tamper-proof” dual fuel systems. The unit will run on natural gas or liquefied propane.

•A minimum of one accessible, approved manual shutoff valve shall be installed in the fuel supply line within 6 ft (1.8 m) of the Home Standby Generator. A union or flanged connection shall be provided downstream from this valve to permit removal of controls.

•Natural gas fuel supply pressure at the generator's fuel inlet port should be between 5 to 7 inches of water (in. W.C.) at full load. LP fuel supply pressure should be 11 to 14 inches of water (in.W.C.) at full load.

The Home Standby Generator unit has been factory set to run on natural gas. If you need to change from natural gas to LP gas, the unit will need to be reconfigured, as described on page 13.

It is recommended that the fuel connection incorporate the following components:

•A manual fuel shut-off valve located in the interior of the building.

•A manual fuel shut-off valve located outside the building, just before the generator unit.

•Where the formation of hydrates or ice is known to occur, piping should be protected against freezing.The termination of hard piping should include a sediment trap where condensate is not likely to freeze.

•A manometer port should be provided.

The manometer port permits temporary installation of a manometer (Figure 5), to ensure that the engine receives the correct fuel pressure to operate efficiently throughout its operating range.

Figure 5 — Temporary Manometer Installed

NOTE: A digital manometer, P/N 19495, is available at your local Briggs & Stratton service center.

When the initial test runs are completed, the manometer is removed and the port is plugged. A typical final fuel connection assembly is shown in Figure 6.

Figure 6 — Completed Fuel Connections

From Fuel

Supply Line

To Home Standby

Generator

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Fuel Consumption

See Figure 7 for fuel supply requirements at half and full load for both natural gas and LP vapor.

Figure 7 — Fuel Supply Requirements

Model	Natural Gas*		LP Vapor**
	1/2 Load	Full Load	1/2 Load	Full Load
1938-0	84	162	34.19	65.81
1815-0	102	195	41.03	78.63

* = Natural Gas is in cubic feet per hour ** = LP Vapor is in cubic feet per hour

Fuel Pipe Sizing

Figures 8 and 9 provide the maximum capacity of pipe in cubic feet of gas per hour for gas pressures of 0.5 psi or less and a pressure drop of 0.3 in. water column. Specific gravity of gas is shown.

Listed values compensate for a nominal amount of restriction from bends, fittings, etc. If an unusual number of fittings, bends, or other restrictions are used, please refer to federal and local codes.

Figure 8 — NATURAL GAS (NG) Pipe Size - Gas Flow Chart, in cubic feet per hour

NPT	10ft	15ft	20ft	30ft	40ft	50ft	60ft	70ft	80ft	90ft	100ft
3/4”	346	293	240	192	163	145	132	120	113	106	99
1”	653	549	446	360	307	274	250	230	211	197	187
Natural Gas (sg=0.65)
Figure 9 — LIQUID PROPANE (LP) GAS Pipe Size - Gas Flow Chart, in cubic feet per hour
NPT	10ft	15ft	20ft	30ft	40ft	50ft	60ft	70ft	80ft	90ft	100ft
3/4”	277	192	158	126	107	95	87	79	74	69	65
1”	428	360	293	236	202	180	164	151	139	129	123

Liquid Propane (LP) (sg=1.50)

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KNOW YOUR SYSTEM CONTROL BOARD

Compare this Control Board illustration with your generator to familiarize yourself with the location of these important controls and connections:

50/60 Hz Switch

	12 Volt DC,	Exercise Failure	Emergency Failure
	.5 Amp Output
			Remote LED Output

12 Volt DC, .5 Amp Output — Internal power supply.

50/60 Hz Switch — Allows factory to select between either 50 Hz or 60 Hz. Make sure the switch is in the

60 Hz position at all times for proper generator operation.

Emergency Failure — Use NO2, Common2 and NC2 to hook up a siren, light, etc. to alert you in case of a failure during a power outage.

Exercise Failure — Use NO1, Common1 and NC1 to hook up a siren, light, etc. to alert you in case of a failure during the exercise cycle.

Remote LED Output — Use this to hook up the extra remote LED supplied with the generator.The remote LED will turn on and off in a series of blinks if certain faults are detected in the generator.

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Generator AC Connection System

A single-phase, three-wire AC connection system is used in the Home Standby Generator.The stator assembly consists of a pair of stationary windings with two leads brought out of each winding.The junction of leads 22 and 33 forms the neutral lead, as shown schematically and as wiring diagram in Figure 10.A complete schematic and wiring diagram can be found in the operator’s manual.

NOTE: Neutral is not bonded to ground at generator.

Figure 10 — System AC Connections

Grounding the Generator

Ground the Home Standby Generator per applicable codes, standards, and regulations.The generator GND lug is located inside the air intake door.

Utility Control Circuit Connection

Control circuit interconnections consist of "Utility" leads. These two leads must be routed in conduit. Control lead functions are briefly described as follows:

•"Utility 1" and "Utility 2" deliver utility power to the generator’s circuit board, charge the battery and when utility is lost the generator will start.

Using installer-supplied minimum 300V, 14 AWG copper wire, connect each control circuit terminal in the generator to the Automatic Transfer Switch.

Fault Detection System

The light on the control panel is referred to as the Diagnostic LED. It will turn on and off in a series of blinks if certain faults are detected in the HSG.An extra LED and mounting plate is supplied so that it can be installed at a convenient indoor location.The owner will use it to observe the status of the HSG. Consult with the owner for a convienant location.

To install the remote LED panel:

•Apply the supplied decal to the supplied mounting plate.

•Push the LED through the mounting plate from the front until it snaps in place.

•Using minimum 18 AWG wire, connect the remote LED to the generator control board using supplied pin connectors. Use wire nuts to attach wire to LED leads.

•Attach mounting plate to installer-supplied electrical box.

Refer to the section “Fault Detection System” in the Operator’s Manual for operation.

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System Control Panel

Figure 11 depicts the Home Standby Generator control panel, located inside the generator housing. Brief descriptions of the controls used during installation. More information may be found in the operator’s Manual.

Figure 11 — Home Standby Generator Control Panel

Circuit

Set Exercise

Breaker

Switch

Diagnostic

LED

Hour Meter

AUTO/OFF/

MANUAL

15 Amp Switch

Fuse

AUTO/OFF/MANUAL Switch

This three-position switch is the most important control on the system and is used as follows:

•“AUTO” position is the normal operating position. If a utility power outage is sensed, the system will start the generator.When utility power is restored, lets the engine stabilize internal temperatures, shuts off the generator, and waits for the next utility power outage.

•“OFF” position turns off running generator, prevents unit from starting and resets any detected faults.

•“MANUAL” position starts the engine after a short amount of time. It is used for maintenance or diagnostic functions.

15 Amp Fuse

Protects the Home Standby Generator DC control circuits. If the fuse has ‘blown’ (melted open) or was removed, the engine cannot crank or start. Replace the fuse using ONLY an identical BUS AGC 15A fuse. One spare fuse is supplied with the unit.

BEFORE INITIAL START-UP

Engine Oil

This engine is shipped from the factory filled with the recommended oil. Before starting the engine, check oil level and ensure that engine is serviced as described in the engine operator’s manual.

CAUTION

Any attempt to crank or start the engine before it has been properly serviced with the recommended oil will result in equipment failure.

•Refer to engine manual for oil fill information.

•Damage to equipment resulting from failure to follow this instruction will void warranty.

Oil Considerations

Your Home Standby Generator is equipped with an engine that has been pre-run at the factory and does not require the traditional “break-in” procedure.

The system is filled with synthetic oil (API SJ/CF 5W30W).This allows for system operation in the widest range of temperature and climate conditions.

NOTE: The use of synthetic oil DOES NOT alter the required oil change intervals described in the engine operator’s manual.

Battery Connection

The Home Standby Generator is supplied with a 12 Volt DC,AGM type, 33 Amp-Hour, valve regulated battery. It is a sealed, lead-acid rechargeable battery. It is installed in the unit and the battery cables are connected at the factory.The unit’s 15 Amp fuse, which isolates the battery and prevents the unit from starting, has been removed for shipping.The battery will lose some charge charge prior to installation of the generator. If battery voltage is below 12 Volts, charge the battery.

IMPORTANT: If battery voltage is below 5 Volts, it may not take a charge and you will need a new battery.

Charging the Battery

If it is necessary to charge the battery, proceed as follows:

1.Set the generator's “AUTO/OFF/MANUAL” switch to

OFF.

2.Remove the 15 Amp fuse from the control panel.

3.Disconnect the negative battery cable to the negative battery terminal (indicated by NEGATIVE, NEG, or (-).

CAUTION

Failure to disconnect negative battery cable will result in equipment failure.

•DO NOT attempt to jump start the battery.

•Damage to equipment resulting from failure to follow this instruction will void warranty.

4.Charge battery with battery charger at 2 Amps until battery holds 12 Volts.

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DANGER

Storage batteries give off explosive hydrogen gas during recharging.

Slightest spark will ignite hydrogen and cause explosion.

Battery electrolyte fluid contains acid and is

extremely caustic.

Contact with battery contents will cause severe chemical burns.

A battery presents a risk of electrical shock and high short circuit current.

•DO NOT dispose of battery in a fire.

•DO NOT allow any open flame, spark, heat, or lit cigarette during and for several minutes after charging a battery.

•DO NOT open or mutilate the battery.

•Wear protective goggles, rubber apron, and rubber gloves.

•Remove watches, rings, or other metal objects.

•Use tools with insulated handles.

NOTE: With the battery installed and utility power available to the Automatic Transfer Switch, the battery receives a trickle charge whenever the engine is not running.This process may take up to 72 hours to fully charge a battery from 5 Volts.The trickle charge cannot be used to recharge a battery that is completely discharged.

5.Connect the negative battery cable to the negative battery terminal (indicated by NEGATIVE, NEG, or (-).

6.Ensure hardware on both positive and negative battery terminals is secure.

7.Reinstall the 15 Amp fuse in the control panel.

CAUTION

Installing the 15A fuse could cause the engine to start.

•DO NOT install the 15 Amp fuse until all plumbing and wiring has been completed and inspected.

8.Set the generator's “AUTO/OFF/MANUAL” switch to

AUTO.

Servicing the Battery

If it is necessary to service the battery, proceed as follows:

1.Set the generator's “AUTO/OFF/MANUAL” switch to

OFF.

2.Remove the 15 Amp fuse from the control panel.

3.Service or replace battery as required.

4.Connect the red battery cable to the battery positive terminal (indicated by POSITIVE, POS, or (+).

5.Connect the negative battery cable to the negative battery terminal (indicated by NEGATIVE, NEG, or (-).

6.Ensure hardware on both positive and negative battery terminals is secure.

7.Reinstall the 15 Amp fuse in the control panel.

8.Set the generator's “AUTO/OFF/MANUAL” switch to

AUTO.

Fuel Supply System

Ensure that all fuel pipe connections are tight, secure and without leaks.

Ensure that all gas line shutoff valves are OPEN and that adequate fuel pressure is available whenever automatic operation is desired.

FUEL SYSTEM SELECTION

The engine of your Home Standby Generator is factory calibrated to run on natural gas (NG). It may also be operated on liquefied petroleum (LP).There is no additional hardware/equipment required to switch between either fuel. However, LP fuel inlet pressure must be between

11 and 14 inches water column.

To configure the fuel system for LP use:

•Set the AUTO/OFF/MANUAL switch to OFF.

•Remove the 15 Amp fuse.

•Connect the fuel transfer solenoid as follows:

1.Remove the “Oil Service” access door.

2.Join the two-pin electrical connector shown in Figure 12.

Figure 12 — Fuel Transfer Solenoid Connection

Push two connectors together

3.Reinstall the “Oil Service” access door.

•Reinstall the 15 Amp fuse.

•Set the AUTO/OFF/MANUAL switch to AUTO.

The system is now ready to operate automatically using LP fuel.With a fixed main jet for LP gas, there is no need to perform any engine adjustments for LP operation.

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Briggs & Stratton Power Products Home Generator

Installation Manual

INITIAL START-UP (NO LOAD)

Begin testing the system without any electrical loads connected, as follows:

1.Set the AUTO/OFF/MANUAL switch to OFF.

2.Set the generator’s main circuit breaker to its OFF (open) position.

3.Install the 15 Amp fuse in the control panel.

4.Set the AUTO/OFF/MANUAL switch to MANUAL.

NOTE: When the Home Standby Generator is started for the very first time, it will require that air in the gaseous fuel lines be purged.This may take a few minutes.

5.DO NOT crank engine for more than 15 seconds, then pause for 15 seconds to reduce heat in the starter.

6.Repeat process until engine starts.

7.Listen for unusual noises, vibration or other indications of abnormal operation. Check for oil leaks while the engine runs.

8.Let the engine warm up for about five minutes to allow internal temperatures to stabilize.Then, set the generators main circuit breaker to its ON (or closed) position.

9.Connect an accurate AC voltmeter and a frequency meter to check generator output at the load side of the circuit breaker.Voltage should be 239-262 Volts, frequency should be 62.0 - 62.5 Hz.

NOTE: If either parameter is outside these ranges, perform the Engine Adjustments described on page 14.

10.Check generator output between one of the generator connection lugs and the neutral lug, then between the other generator connection lug and the neutral lug. In both cases, voltage reading should be between 121-131 Volts.

11.Set the AUTO/OFF/MANUAL switch to OFF. Engine should stop.

IMPORTANT: DO NOT proceed until you are certain that generator AC voltage and frequency are correct and within the stated limits.To obtain the proper generator frequency, see Engine Adjustments on page 14.

Engine Adjustment

There are regional variances in the composition of natural gas. Each HSG unit is adjusted at the factory for NG operation. If the generator output voltage or frequency measured during Initial Start-Up (paragraph #9) is outside the listed ranges, the combustibility of the gas supplied at the installation site may be substantially different.

To adjust the engine for this difference, proceed as follows.

1.Remove the Air Intake and Control Panel access doors.

2.Remove the three M5 sheet metal screws that hold the control panel wiring cover to the air intake guard (Figure 13).

Figure 13 — Accessing Back of Control Panel

3.Connect an accurate frequency meter to the load side of the main circuit breaker (on the back of the control panel).

4.Ensure that the 15 Amp fuse is installed.

5.Set the generator’s main circuit breaker ON.

6.Set the AUTO/OFF/MANUAL switch to MANUAL. When the engine starts, allow it to warm up for two minutes.

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Briggs & Stratton Power Products Home Generator

Installation Manual

7.Normal no load frequency is 62.0 to 62.5 Hz. If adjustment is needed at no load, slowly rotate the governor adjustment nut (Figure 14) clockwise and/or counterclockwise until frequency is 62.0 to 62.5 Hz.

AUTOMATIC OPERATION SEQUENCE

Figure 14 — Governor Adjustment Nut

Governor

Adjustment Nut

8.Turn the service disconnect to the transfer switch off. The transfer switch will connect to the generator after a short time delay.

9.Load generator to rated Natural Gas rating.

10.Connect an accurate frequency meter to the load side of the main circuit breaker (on the back of the control panel). Frequency should be above 57.0 Hz.

11.If frequency is below 57.0 Hz, slowly rotate the governor adjustment nut clockwise and/or counterclockwise until frequency is above 57.0 Hz.

12.Turn the service disconnect to the transfer switch on. The transfer switch will connect to the utility after a short time delay.

13.Set the AUTO/OFF/MANUAL switch to OFF.

14.After the engine has stopped running, reinstall the control panel wiring cover to the air intake guard.

15.Reinstall the air intake and control panel access doors.

16.Set the AUTO/OFF/MANUAL switch to AUTO.

The generator’s control panel houses a logic control circuit board.This control board constantly monitors utility power source voltage. Should that voltage drop below a preset level, control board action will signal the engine to crank and start.

When utility source voltage is restored above a preset voltage level, the engine is signaled to shut down.

The actual system operation is not adjustable and is sequenced by sensors and timers on the control board, as follows:

Utility Voltage Dropout Sensor

•This sensor monitors utility source voltage.

•If utility source voltage drops below about 70 percent of the nominal supply voltage, the sensor energizes a 6-second timer.The timer is used to ‘sense’ brown-outs.

•Once the timer has expired, the engine will crank and start.

Utility Voltage Pickup Sensor

This sensor monitors utility power supply voltage.When that voltage is restored above 80 percent of the nominal source voltage, a time delay starts timing and the engine will go to engine cool-down.

Engine Cool-down Timer

•When the load is transferred back to the utility power source, the engine cool-down timer starts timing.

•The timer will run for about one minute, then the generator will stop.

•Minimum engine run time is 5 minutes.

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