Simplicity HGS INSTALLATION MANUAL BRIGGS & STRATTON 10KW STANDBY- MODEL 01679-0 Guide d'installation

Marque: Simplicity

Modèle: HGS INSTALLATION MANUAL BRIGGS & STRATTON 10KW STANDBY- MODEL 01679-0

Catégorie: Groupes électrogènes

Taper: Guide d'installation

Ce manuel convient également à

01679-0

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 Standby Helpline

Llamada: Línea Directa de Reserva de Hogar

Appelez: Ligne Directe de Secours À la Maison

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

Web: www.briggsandstratton.com

Model 01679-0 Part No. 190838GS

Rev. 3 (01/03/2003)

2
Briggs & Stratton Power Products Home Generator System
Installation Manual
TABLE OF CONTENTS EQUIPMENT
DESCRIPTION
This system consists of an engine driven AC generator
designed to provide backup electrical power for operating
compatible electrical loads through the supplied automatic
power transfer switch.
This manual contains installation, startup and adjustment
instructions for Home Generator Systems that operates
120 and/or 240 Volt, single phase, 60Hz devices.The
generator may be operated on LP or natural gas fuel.A
separate owner’s manual (part number 190839) contains
specifications, operating and maintenance instructions for
these models.
Every effort has been expended to make sure 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.
CAUTION! DO NOT tamper with engine
governed speed. High operating speeds are
dangerous and increase the risk of personal injury
or damage to equipment.
CUSTOMER
RESPONSIBILITIES
• Read and follow the instructions given in the Owner’s
Manual, especially the section regarding selecting essential
circuits.
• Follow a regular schedule in maintaining, caring for and
using your Home Generator System, as specified in the
Owner’s Manual.
INSTALLER
RESPONSIBILITIES
• Read and observe the safety rules.
• Read and follow the instructions given in this Installation
and Start-up Manual.
• Employ good workmanship techniques to ensure a long
lasting and trouble-free backup power installation.
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 Tools/Equipment  . . . . . . . . . . . . . . . . . . . . 4
Home Generator System Location . . . . . . . . . . . . . . 4
Fuel and Electrical Inlet Dimensions  . . . . . . . . . . . . . 5
Lifting the Generator  . . . . . . . . . . . . . . . . . . . . . . . . 5
Access Doors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Automatic Power Transfer Switch Mounting
Dimensions . . . . . . . . . . . . . . . . . . . . . . . . . 7
THE GASEOUS FUEL SYSTEM  . . . . . . . . . . . . . . . . . . 7-8
Fuel Consumption  . . . . . . . . . . . . . . . . . . . . . . . . . . 9
Fuel Pipe Sizing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9
ESSENTIAL CIRCUIT ISOLATION . . . . . . . . . . . . . . . . 10
TRANSFER SWITCH  . . . . . . . . . . . . . . . . . . . . . . . . . . 11
Generator AC Connection System . . . . . . . . . . . . . 11
Power Wiring Interconnections  . . . . . . . . . . . . . . . 12
Grounding the System  . . . . . . . . . . . . . . . . . . . . . . 13
Control Circuit Interconnections  . . . . . . . . . . . . . . 13
Fault Detection System . . . . . . . . . . . . . . . . . . . . . . 13
System Control Panel . . . . . . . . . . . . . . . . . . . . . . . 13
BEFORE INITIAL ENGINE START-UP . . . . . . . . . . . . . . 14
Engine Oil . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
Battery Connection  . . . . . . . . . . . . . . . . . . . . . . . . 14
Fuel Supply System . . . . . . . . . . . . . . . . . . . . . . . . . 14
INITIAL START-UP (NO LOAD)  . . . . . . . . . . . . . . . . . 15
Electrical Checks  . . . . . . . . . . . . . . . . . . . . . . . . . . 15
AUTOMATIC OPERATION SEQUENCE  . . . . . . . . . . . 16
Checking Automatic Operation  . . . . . . . . . . . . . . . 17
SETTING EXERCISE TIMER  . . . . . . . . . . . . . . . . . . . . . 17
RECONFIGURING THE FUEL SYSTEM  . . . . . . . . . . . . 18
Engine Adjustment  . . . . . . . . . . . . . . . . . . . . . . . . . 18
POST INSTALLATION INSPECTION . . . . . . . . . . . . . . 19
REFERENCES  . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Standards Index  . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
Fuel Comparison Chart  . . . . . . . . . . . . . . . . . . . . . 20
Size of Propane Tank Required at Various Temperatures
When Kept at Least Half Full  . . . . . . . . . . 20
INSTALLATION NOTES. . . . . . . . . . . . . . . . . . . . . . . . . 21

Briggs & Stratton Power Products Home Generator System

Installation Manual

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.

Only qualified electricians and gaseous fuel

technicians should attempt installation of this

system, which must strictly comply with applicable

codes, standards and regulations.

WARNING

• 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. If this is not

possible, attempt to free the victim from the live conductor.

Avoid direct contact with the victim. Use a non-

conducting implement, such as a rope or board, to free the

victim from the live conductor. If the victim is unconscious,

apply first aid and get immediate medical help.

• 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 Generator System 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 AND remove the

15 Amp fuse BEFORE working on the equipment.

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.

WARNING

• Adequate, unobstructed flow of cooling and ventilating air is

critical to correct generator operation.

• Keep at least 2 feet of clearance on all sides of generator for

adequate ventilation.

• Despite the safe design of the Home Generator System,

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.

Improper treatment of generator can damage it and

shorten its life.

CAUTION

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

codes.

• Before placing the Home Generator System into service, the

fuel system lines must be properly purged and leak tested.

• After the system is installed, you should inspect the fuel

system periodically.

• NO leakage is permitted.

Propane and Natural Gas is extremely

flammable and explosive.

Fire or explosion can cause severe burns or

death.

WARNING

NOT INTENDED FOR USE AS PRIMARY

POWER IN PLACE OF UTILITY OR IN

LIFE-SUPPORT APPLICATIONS

WARNING

Briggs & Stratton Power Products Home Generator System

Installation Manual

INSTALLATION

PROCEDURES

Unpacking Precautions

The unit is shipped bolted to its mounting pad, ready for

hookup. Use care to avoid damage from dropping, bumping,

collision, etc. Store and unpack carton with the proper side

up, as noted on the shipping carton.

Delivery Inspection

After removing the carton, carefully inspect the Home

Generator and Automatic Power Transfer Switch

components 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 Generator System is supplied with:

• Backup Power generator

• Pre-attached mounting pad

• Automatic Power Transfer switch

• One 24” flexible hook-up pipe

• Installation and start-up manual (P/N 190838)

• Owner’s manual(P/N 190839)

• Product warranty sheet (P/N 190881)

• Installation checklist (P/N 190840)

• 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))

Required Tools/Equipment

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

• Hole punches for 16ga steel

• Torque screwdriver, 5 to 50 inch-pound range

Home Generator System Location

TO THE INSTALLER: Consult with the owners

and convey any technical considerations that might

affect their wishes, before applying these general

guidelines.

Generator Clearances

The generator enclosure must be a minimum of 3 ft.

(92 cm) from combustible material (NFPA 37). Leave at

least 3 ft. (92 cm) all around the enclosure for access to the

inside of the enclosure (NEC Art. 110-26a,Art. 110-26b).

The unit’s exhaust port must be at least 5 ft. (152 cm) from

any building opening (window, door, vent etc.), and the

exhaust must not be able to accumulate in any occupied

area (Figure 1).

General Location Guidelines

• Install the unit outdoors ONLY. NO MODIFICATIONS

WILL ALLOW INSIDE INSTALLATION!

Place the unit in a prepared location that is flat and has

provisions for water drainage.

• 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.

• In locations where strong winds blow from one

direction, face the generator air inlet openings into the

prevailing winds, if possible.

Figure 1 — Home Generator System Clearances

Exhaust port must be

5 ft (152 cm) minimum

distance from building

openings

Exhaust

Port

Briggs & Stratton Power Products Home Generator System

Installation Manual

• Install the generator as close as possible to the

Automatic Power Transfer System to reduce the length

of wiring and conduit.

• Install the generator as close as possible to the fuel

supply to reduce length of pipes.

CAUTION! Laws or local codes may regulate the

distance to the fuel supply.

The Home Generator System is shipped already attached

to its mounting pad. Unless mandated by local code, no

concrete slab is required.

If mandated by local code, detach the unit from its supplied

base. 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. Use the mounting pad holes as

anchor bolt locators.

Fuel and Electrical Inlet Dimensions

Figure 2, below, depicts the physical location of the fuel

piping connector.Also shown is the recommended location

for punching holes for attaching the power and signal

conduits.

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 unit.

CAUTION! DO NOT lift unit by roof as damage to unit

will occur.

Two 4ft. 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 (next page).

CAUTION!The unit may shift on the lifting pipes

during movement, which may cause an injury.

WARNING! If lifting or hoisting equipment is

used, be careful not to touch any overhead power

lines.

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

3/4” NPT

Fuel Piping

Connector

Recommended

Conduit Attachment

Area

4.5”

13.5”

Briggs & Stratton Power Products Home Generator System

Installation Manual

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 Generator System is equipped with an

enclosure having four access doors.As shown in Figure 4,

below, the doors are named for a significant component

located behind them.Also shown is the unit’s dimensions.

Starting with the side that has the fuel piping connector

and proceeding clockwise, the doors are named:

• Oil Service door

• Air Intake door

• Control Panel door

• Battery door

Each unit is equipped with three identical circular keys.

These keys fit the locks that secure the oil service and

control panel doors.

To remove an access door:

1. Insert a key into the lock of the 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 the door’s lift handle and pull the door upwards

until the security pins are free of the engagement holes

in the lower base.

Fuel

Inlet

Exhaust

Port

Door Lock

Screw

Door

Lock

Screw

Battery Door

Control Panel Door

42”

30”

29”

Figure 4 — Enclosure Access Doors

Air Intake Door

Oil Service Door

To lift:

Insert

pipe

here

Installer-supplied pipe

Figure 3 — Location of Lifting Holes

Briggs & Stratton Power Products Home Generator System

Installation Manual

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 and the Air Intake door do not have locks

or lift handles.They are opened in the same manner, lifting on

the louvers instead of a lift handle. However, you must

remove the door lock screw, found directly above the center

of the door. Replace the screw whenever the access door is

installed.

WARNING! Burn Hazard! The exhaust port can

reach a temperature of 600° F during use and

remains hot after shutdown. Carelessness could

cause severe burns.

To install an access door:

1. Support the door by grasping the lift handle or louver.

Guide the top of the door into the upper channel of

the generator enclosure.

2. Lift the door up into its upper mounting channel until

the security pins clear enclosure sill.

3. Push the lower half of the door into the door recess

until it is flush with the sides.

4. Seat the door by pushing it down until the rubber coated

security pins engage and the door rests on the sill.

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

turn counterclockwise. Remove and secure the 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.

CAUTION! 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. Failure to

install the fuse as described on page 14 could cause

the engine to start.

Automatic Power Transfer Switch

Mounting Dimensions

Figure 5 depicts the physical size and mounting hole

locations of the NEMA automatic transfer switch

enclosure.This enclosure is suitable for indoor use only.

The transfer switch enclosure is commonly secured

through the predrilled holes, as shown. However, other

mounting holes can be made by removing the switch

component mounting plate and drilling new holes.

THE GASEOUS FUEL

SYSTEM

WARNING! Gaseous fuels, such as LP and

natural gas, are highly volatile and their vapors are

Explosive. LP gas is heavier than air and will settle

in low areas. Natural gas is lighter than air and will

collect in high areas. Even the slightest spark can

ignite these fuels and cause an explosion.

TO THE INSTALLER: Consult with the Home

Generator System 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

NFPA and local codes, rigidly mounted and protected

against vibration.

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.

Figure 5 — Automatic Power Transfer Switch Dimensions

Mounting Dimensions

Enclosure Dimensions

Briggs & Stratton Power Products Home Generator System

Installation Manual

• Install flexible gaseous pipe (supplied) between the Home

Generator System Fuel Inlet port and rigid piping.

CAUTION! Connector is not to be installed

underground or in contact with the ground.

CAUTION! Entire flex connector must be visible

for periodic inspection and must not be concealed

within, contact, or run through any wall, floor, or

partition.

• Piping must be of the correct size to maintain the

required supply pressures and volume flow under varying

conditions.

• 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.

Consider the following factors when planning to

install the fuel supply system:

The Home Generator System engine is fitted with a fuel

carburetion 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 manual shutoff valve should be placed

in-line and located outside the building to facilitate

servicing the generator.

• 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 Generator System 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 18.

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.

• The termination of hard piping should include a sediment

trap.

• A manometer port should be provided.

The manometer port permits temporary installation of a

manometer (Figure 6), to ensure that the engine receives

the correct fuel pressure to operate efficiently throughout

its operating range.

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 7.

Figure 7 — Completed Fuel Connections

Figure 6 — Temporary Manometer Installed

From Fuel

Supply Line

To Home

Generator System

Briggs & Stratton Power Products Home Generator System

Installation Manual

Fuel Consumption

See Figure 8 for fuel supply requirements at half and full

load for both natural gas and LP vapor.

Fuel Pipe Sizing

Figures 9 and 10 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.This information is based on data

found in Chapter 9 of NFPA Publication 54.

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 NFPA Publication 54.

NPT

10ft

15ft

20ft

30ft

40ft

50ft

60ft

70ft

80ft

90ft

100ft

½”

110

¾”

277

192

158

126

107

1”

428

360

293

236

202

180

164

151

139

129

123

NPT

10ft

15ft

20ft

30ft

40ft

50ft

60ft

70ft

80ft

90ft

100ft

½”

168

146

115

¾”

346

293

240

192

163

145

132

120

113

106

1”

653

549

446

360

307

274

250

230

211

197

187

Natural Gas (sg=0.65)

Model 1679-0 requires 177.9 CFH at “Full Load”

Liquefied Petroleum (LP) (sg=1.50)

Model 1679-0 requires 78.24 CFH at “Full Load”

Figure 10 — LIQUEFIED PETROLEUM (LP) GAS Pipe Size - Gas Flow Chart, in cubic feet per hour

Model

Natural

Gas*

Vapor **

1/2

Load

Full

Load

1/2 Load

Full Load

1679-0

100.8

177.9

1.16/42.21

2.15/78.24

Figure 8 — Fuel Supply Requirements

* = Natural Gas is in cubic feet per hour

** = LP Vapor is in gallons per hour/cubic feet per hour

Figure 9 — NATURAL GAS (NG) Pipe Size - Gas Flow Chart, in cubic feet per hour

Briggs & Stratton Power Products Home Generator System

Installation Manual

ESSENTIAL CIRCUIT

ISOLATION

Essential electrical loads are loads that will be powered by

the Home Generator System. Essential loads are grouped

together and wired into the transfer switch.

CAUTION!This Home Generator System MUST

be installed as described herein.

TO THE INSTALLER: Consult with Home

Generator System owner(s) to discuss their

“Selection of Essential Circuits”, described in the

owner’s manual.

Ensure that the total of the selected load circuits fed by this

transfer switch are within the generator's rated capacity.

The following requirements apply to this type of isolation

system:

• The Automatic Transfer Switch is installed after the main

distribution panel.

• The Automatic Transfer Switch has a load rating of

50 Amps.This is the maximum load rating of the essential

loads.

All wiring must conform to the National Electrical Code,

and all state and local codes.

The illustration in Figure 11 depicts the Home Generator

System and assumes the utility is supplying 120/240 Volt,

single-phase electrical service.

Figure 11 — Typical System Diagram with Essential Circuits

To Utility Power

Watt Meter

Main Distrubution Panel

To Air Conditioner (240V)

To Other Circuits (120V)

To Range

To Water Heater

240V

To Briggs & Stratton

Home Generator Unit

120V To Microwave

120 V To Bathroom

240V To Well Pump

120V To Sump Pump

Neutral

120V

To Furnace Blower

To Lights

To Refrigerator

120V To Freezer

Automatic Transfer Switch

(in normal position)

Briggs & Stratton Power Products Home Generator System

Installation Manual

TRANSFER SWITCH

The Automatic Transfer Switch supplied with the Home

Generator System is enclosed in a NEMA Type 1 enclosure

suitable for indoor use only. Guidelines for mounting the

Automatic Transfer Switch include:

• Install the switch on a firm, sturdy supporting structure.

• To prevent switch contact distortion, level the switch if

necessary.This can be done by placing washers between

the switch enclosure and the mounting surface.

• NEVER install the switch where water or any corrosive

substance might drip onto the enclosure.

• Protect the switch at all times against excessive moisture,

dust, dirt, lint, construction grit and corrosive vapors.

The typical Automatic Power Transfer Switch is depicted in

Figure 12. It is best if it is mounted inside near the main

distribution panel, as shown. Discuss layout

suggestions/changes with the owner before beginning the

system installation process.

Generator AC Connection System

A single-phase, three-wire AC connection system is used in

the Home Generator System.The stator assembly consists

of a pair of stationary windings with two leads brought out

of each winding.The two windings are connected together

in series, resulting in a fixed 240 Volt AC, 60Hz output.

Stator output leads 11 and 44 are the two “hot” leads; the

junction of leads 22 and 33 forms the neutral lead, as

shown schematically and as wiring diagram in Figure 13.A

complete schematic and wiring diagram can be found in the

owner’s manual.

Figure 13 — System AC Connections

Automatic

Transfer Switch

Main

Distribution

Panel

Figure 12 — Typical Switch Mounting

Briggs & Stratton Power Products Home Generator System

Installation Manual

Power Wiring Interconnections

All wiring must be the proper size, properly supported, of

approved insulative qualities, and protected by NEC

approved conduit. Use flexible conduit between the

enclosure and any rigid conduit.

CAUTION! Per NEC code, power voltage leads

must be run in separate conduit from low voltage

transfer switch "signal" leads.

Complete the following connections between the

generator, transfer switch and main distribution panel

(Figure 14).

1. Connect utility power supply leads from a two pole

breaker installed in the main distribution panel to

transfer switch terminals marked “UTILITY

CONNECTION”. Use a 50 Amp circuit breaker.

Ensure breaker is turned OFF.

2. Connect utility neutral to the transfer switch

“NEUTRAL” bus.

3. Connect utility ground to the transfer switch “GND”

bus.

4. Connect generator power supply leads from the

generator’s control panel to transfer switch terminals

marked “GENERATOR CONNECTION”.

5. Connect generator Neutral from the control panel to

the transfer switch NEUTRAL bus.

6. Connect generator GND from the control panel to

the transfer switch GND bus.

7. Torque all wire connections/fasteners to values

recommended in Figure 15.

Generator

Neutral is

White wire

Control Signal

Connections

GND lug

Wire

Nut

Dual Pole

Breaker

Utility

Connection

Generator

Connection

Rear of

Control

Panel

Neutral

Bus

Neutral

Bus

Ground

Bus

Main

Distribution

Panel

Automatic Power Transfer Switch

Home Generator

System

Generator

Figure 14 — Typical Installation Diagram for Home Generator System

Diagnostic LED

Grounding the System

Installer-supplied minimum 10 AWG stranded copper wire

is connected to the generator housing GND lug and routed

through conduit to the Automatic Transfer Switch’s GND

bus. Continue the 10AWG wire through conduit to the

main distribution panel ground bus.Torque all wire

connections/fasteners to values recommended in Figure 15.

Generator grounding rod is used ONLY if required

by local code.

Control Circuit Interconnections

Control circuit interconnections consist of "Utility" and

"Load" leads, plus leads “15”,“205”, and “206”.These seven

signal leads must be routed in conduit that is separate from

the AC power leads. Control lead functions are briefly

described as follows:

• "Utility 1" and "Utility 2" deliver utility power to the

generator’s circuit board.

• "Load 1" and "Load 2" are used to operate the exercise

timer on the generator's circuit board.

• Leads “15”,“205”, and “206” supply control signals to the

Automatic Transfer Switch.

Using installer-supplied minimum 14 AWG stranded copper

wire, connect each control circuit terminal in the generator

to its corresponding terminal in the Automatic Transfer

Switch.Torque all wire connections/fasteners to values

recommended in Figure 15.

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 problems are detected in the HGS.An extra LED

and mounting plate is supplied so that it can be installed at a

convenient inside location.The owner will use it to observe

the status of the HGS.

To install the remote LED panel:

• Apply the supplied decal.

• Pull the LED through the mounting plate from the back

until it snaps in place.

• Using minimum 18AWG wire, connect the remote LED

to the generator control panel using supplied pin

connectors. Use wire nuts to attach wire to LED leads.

• Attach mounting plate to installer-supplied low voltage

electrical box.

Refer to the section “Fault Detection System” in the

Owner’s Manual for operation.

System Control Panel

Figure 16 depicts the Home Generator System control

panel, located inside the generator housing. Brief

descriptions of the controls used during installation follow.

More information may be found in the Owner’s Manual.

AUTO/OFF/MANUAL Switch

The most important control on the generator is the

“AUTO/OFF/MANUAL” switch.This three-position

switch will be referred to herein as

“AUTO/OFF/MANUAL”, 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, let it reach operating temperature, then

connect generator power to the transfer switch.When

Briggs & Stratton Power Products Home Generator System

Installation Manual

Hour Meter

Circuit

Breaker

Set Exercise

Switch

AUTO/OFF/

MANUAL

Switch

Diagnostic

LED

15 Amp

Fuse

Figure 16 — Home Generator System Control Panel

CONNECTIONS:

Torque

Value

In Main Distribution Panel:

Minimum

Maximum

Refer to panel manufacturer specs

In Transfer Switch:

UTILITY CONNECTION lugs

35 in-lb

45 in-lb

GENERATOR CONNECTION lugs

35 in-lb

45 in-lb

GND Bar and NEUTRAL Bar:

14-10 AWG

20 in-lb

8 AWG

25 in-lb

6-4 AWG

35 in-lb

Circuit Breakers:

Refer to circuit breaker

manufacturer specs

Figure 15 — Recommended Torque Values

Briggs & Stratton Power Products Home Generator System

Installation Manual

utility power is restored, the system reconnects utility

power to the transfer switch, lets the engine ‘cool down’,

shuts off the generator, and waits for the next utility

power outage.

•“OFF” position turns off a running generator and takes

the system out of the Automatic operation mode.

•“MANUAL” position starts the engine but does not

disconnect utility power from the transfer switch. It is

used for maintenance or diagnostic functions.

15 Amp Fuse

The Home Generator System DC control circuit is

protected from overload by a 15 Amp fuse mounted on the

generator’s control panel (see Figure 16).The fuse is wired

in series with the battery output lead to the control panel.

TO THE INSTALLER: This system is designed so

that when Utility power is present and the 15 Amp

fuse is blown or missing, the transfer switch

UTILITY relay remains closed, thus providing utility

power to the customer.The generator will not start

if utility power drops out or the 15 Amp fuse is

blown or missing.

These functions are controlled by the CMA board. It

provides the power needed to hold the transfer switch

UTILITY relay closed for as long as there is a charge in the

starting battery AND utility power is present

REGARDLESS of the absence or presence of the 15 Amp

fuse.

Replace the fuse using ONLY an identical BUS AGC

15A fuse. One spare fuse is supplied with the unit.

BEFORE INITIAL ENGINE

START-UP

Engine Oil

The generator’s engine is shipped from the factory full of

oil and should be ready to run. However, check oil level and

ensure that engine is serviced as described in the Engine

Owner’s Manual.

CAUTION! Any attempt to crank or start the engine

before it has been properly serviced with the

recommended oil will result in an engine failure that is not

covered under warranty.

Oil Considerations

Your Home Generator System is equipped with an engine

that has completed the traditional “break-in” process.The

engine should only be filled with synthetic oil (SAE 5W-30,

API SJ or later).This permits ‘standby’ operation in the

widest range of temperature and climate variations.

NOTE: The use of synthetic oil does not alter the

required oil change intervals recommended in the Engine

Owner’s Manual.

Battery Connection

The Home Generator System is supplied with a 12 Volt DC

18 Amp-Hour 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.

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

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

OFF.

2. Turn OFF the main distribution panel circuit breaker

supplying utility power to the Automatic Power

Transfer System.

CAUTION!The generator can crank and start

when the battery cable contacts the battery

terminal if the “AUTO/OFF/MANUAL” switch is not

set to its OFF position.

3. Using supplied hardware, connect the red battery lead

to the battery positive terminal (indicated by

POSITIVE, POS, or (+).

4. Repeat step 3 (above) to connect the negative battery

cable.You may need to clip a cable tie to place the

negative wire. Ensure hardware on both positive and

negative battery terminals is secure.

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.The trickle

charge only prevents self-discharge and cannot be used to

recharge a battery that is completely discharged.

Fuel Supply System

Ensure that all fuel pipe connections are tight, secure and

without leaks.

NOTE: In the absence of local purging and leak test

standards, NFPA No. 54 may be used as a guide. (See

“Standards Index” on page 19).

Briggs & Stratton Power Products Home Generator System

Installation Manual

Ensure that all gas line shutoff valves are OPEN and that

adequate fuel pressure is available whenever automatic

operation is desired.

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 Generator System 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. Use short starting cycles (15 sec. per min.) to reduce

heat in the starter.

6. Repeat process until lines are purged of air and engine

starts.

7. Listen for unusual noises, vibration or other indications

of abnormal operation. Check for oil leaks, evidence of

overheating etc. while the unit runs.

Electrical Checks

With the AUTO/OFF/MANUAL switch set to OFF:

1. Turn ON the main distribution panel circuit breaker

that supplies utility power to the Automatic Transfer

Switch.

WARNING! The Automatic Transfer Switch is

now electrically "HOT." Contact with "HOT" parts

will result in extremely hazardous and possibly fatal

electrical shock. Proceed with caution.

2. Use an accurate AC voltmeter to check utility power

voltage across “UTILITY CONNECTION” lugs in the

Automatic Transfer Switch (see Interconnection

Diagram on page 12). Nominal line-to-line voltage

should be 240 Volts.

3. Check utility power between one of the UTILITY

CONNECTION lugs and the neutral lug, then between

the other UTILITY CONNECTION lugs and the

neutral lug. Nominal line-to-neutral voltage should be

120 Volts.

4. When certain that utility voltage is as specified above,

turn OFF the main distribution panel circuit breaker

that supplies utility power to the Automatic Transfer

Switch.

5. Set the generator's main circuit breaker to the OFF

position. Initial tests will be conducted at “no-load”

condition.

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

The engine should crank and start.

7. Let the engine warm up for about five minutes to allow

internal temperatures to stabilize.Then, set the

generator’s main circuit breaker to its ON (or closed)

position.

WARNING! Proceed with caution. Generator

output voltage is now supplied to the Automatic

Transfer Switch. Contact with “HOT” Automatic

Transfer Switch parts will result in dangerous and

possibly fatal electrical shock.

8. Connect an accurate AC voltmeter and a frequency

meter to check generator output across

“GENERATOR CONNECTION” lugs in the Automatic

Transfer Switch (see Interconnection Diagram on

page 12).Voltage should be 239-250 Volts, frequency

should be 62.0 - 62.5 Hz.

NOTE: If either parameter is outside these ranges,

perform the Engine Adjustments described on page 18.

9. 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 121-126Volts.

10. Set the generator’s main circuit breaker to OFF. Let

the engine run at “no-load” for a few minutes to

stabilize internal engine/generator temperatures.

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 18.

Briggs & Stratton Power Products Home Generator System

Installation Manual

AUTOMATIC OPERATION

SEQUENCE

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.After the engine starts, the control board signals

the transfer switch to activate and to connect load circuits

to the backup power supply.

When utility source voltage is restored above a preset

voltage level, the control board signals the transfer switch

to transfer loads back to the power supply.After retransfer,

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 60 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.

Engine Warm-up Time Delay

This mechanism lets the engine warm up for about

15 seconds before the load is transferred to the Home

Generator System.

Backup Voltage Sensor

This sensor monitors generator AC output voltage.When

the voltage has reached 50 percent of the nominal rated

voltage, transfer to the backup generator can occur.

Utility Voltage Pickup Sensor

This sensor monitors utility power supply voltage.When

that voltage is restored above 70 percent of the nominal

source voltage, a retransfer time delay starts timing.

Retransfer Time Delay

• This timer runs for about 6 seconds.

• At the end of a 6-second delay, circuit board action de-

energizes the generator relay in the transfer switch.

• Retransfer to utility power source then occurs.

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.

Briggs & Stratton Power Products Home Generator System

Installation Manual

Checking Automatic Operation

To check the system for proper automatic operation,

proceed as follows:

1. Check that AUTO/OFF/MANUAL is set to OFF.

2. Apply utility power to the Automatic Transfer Switch

by turning ON the main distribution panel circuit

breaker.

3. Set the AUTO/OFF/MANUAL switch to AUTO.The

Automatic Power System is now ready for automatic

operation.

4. Turn OFF the main distribution panel circuit breaker

sending power to the automatic transfer switch.

The engine will crank and start after sensors have timed

out.After starting, the Automatic Power Transfer System

will transfer essential circuit loads to the generator. Let the

system go through its entire automatic operation sequence.

5. With the generator output supplying its loads, turn

ON the main distribution panel circuit breaker that

supplies utility power to the Automatic Power Transfer

Switch.

6. After about 6 seconds, the automatic transfer switch

will transfer loads back to the utility power.

7. About one minute after re-transfer, the generator will

stop.

This completes the test procedures for the automatic

operation of the Home Generator System.

SETTING EXERCISE TIMER

The Home Generator System is equipped with an exercise

timer that will start and exercise the system once every

seven days. During this exercise period, the unit runs for

approximately 12 minutes and then shuts down. Electrical

load transfer DOES NOT occur during the exercise cycle

(unless an utility power outage occurs).

A switch on the control panel is labeled “Set Exercise” (see

Figure 16).The specific day and the specific time of day this

switch is pressed is programmed into the control board

memory.This date and time is then used to automatically

initiate the system exercise cycle.

To perform the Set Exercise procedure:

1. Choose the day and time you want your Home

Generator System to exercise.

2. On that da

y and time, set the AUTO/OFF/MANUAL

switch to OFF.

3. Press and hold down the “Set Exercise” switch until

the Diagnostic LED turns on (about five seconds).

4. Hold the switch down until the Diagnostic LED turns

off. Release the Set Exercise switch.

5. Set the AUTO/OFF/MANUAL switch to AUTO.“Set

Exercise” is complete.

For example, if you press the “Set Exercise” switch on

Sunday morning at 10:00 AM, the unit will run an exercise

cycle the following Sunday at 10:00 AM.

NOTE: “Set Exercise” will only work if the unit is in the

Automatic mode and this exact procedure is followed.The

exerciser does not need to be re-set if the 15 Amp fuse is

removed or changed.The exerciser will need to be re-set if

the 12 Volt DC battery is disconnected.

If you want to change the day and time the unit exercises,

simply perform the “Set Exercise” procedure at the exact

weekday and time you want it to take place.

Briggs & Stratton Power Products Home Generator System

Installation Manual

RECONFIGURING THE

FUEL SYSTEM

The engine of your Home Generator System 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 reconfigure the fuel system for LP use:

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

• Set the generator’s main circuit breaker OFF.

• Remove the 15 Amp fuse.

• Activate the fuel transfer solenoid as follows:

1. Remove the “Oil Service” access panel.

2. Join the two-pin electrical connector shown in

Figure 17.

3. Reinstall the “Oil Service” access panel.

• Reinstall the 15 Amp fuse.

• Set the generator’s main circuit breaker ON.

• 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.

Engine Adjustment

It is commonly known that there are regional variances in

the combustibility of natural gas. Each HGS unit is adjusted

at the factory for correct NG operation. If the generator

output voltage or frequency measured during initial

Electrical Check (paragraph #8 on page 15) 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 different fuel, proceed as

follows.

1. Remove the Air Intake access door.

2. Remove the three M5 sheet metal screws that hold

the control panel wiring cover to the air intake guard

(Figure 18).

3. Remove the six (M5) sheet metal screws that hold the

air intake guard to the engine impeller panel.

4. An access hole is visible above the engine impeller

panel (see Figure 18). It will be covered with a plug.

Remove the plug to gain access to the adjustment

screw.

NOTE: The mixture adjustment screw is the brass slotted

screw in the center of the aluminum boss directly visible in

the access hole.

Figure 17 — Fuel Transfer Solenoid Connection

Push two

connectors

together

Figure 18 — Accessing Engine Mixture Control

Remove

Access

Hole Plug

Briggs & Stratton Power Products Home Generator System

Installation Manual

5. Connect an accurate frequency meter to the load side

of the main circuit breaker (on the back of the control

panel).

6. Ensure that the 15 Amp fuse is installed.

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

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

When the engine starts, allow it to warm up for two

minutes.

9. When the engine speed has stabilized, slowly rotate

the adjustment screw clockwise and/or

counterclockwise until the maximum (peak) frequency

is reached. Normal operating frequency is 62.0 to

62.5 Hz. Reinstall the access hole plug.

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

11. After the engine has halted, reinstall the air intake

guard.

12. Reinstall the control panel wiring cover to the air

intake guard.

13. Reinstall the battery/air intake access panel.

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

POST INSTALLATION

INSPECTION

Before placing the Home Generator System into service,

inspect the entire installation carefully. Ensure that any

scratches or broken paint on the inside or outside of the

enclosure are touched up with the supplied paint.

Complete the ”Installation Checklist” as you make the

inspection. Ensure all items have been filled-in and all

signatures have been obtained. Instruct the owner to mail

the white copy to:

Briggs & Stratton Power Products

Warranty Registration

P. O. Box 1144

Milwaukee,WI 53201-1144

REFERENCES

Standards Index

In the absence of pertinent standards, codes, regulations, or

laws, the published information listed below may prove

useful when installing this equipment.

• NFPA No. 54, National Fuel Gas Code, available from

the National Fire Protection Association, 1 Batterymarch

Park, Quincy, MA 02269-9101; (617) 770-3000; Fax

(617) 770-0700; online at www.nfpa.org..

• NFPA No. 30, Flammable and Combustible Liquids

Code, obtainable from NFPA, above.

• NFPA No. 37, Stationary Combustion Engines and Gas

Turbines, obtainable from NFPA, above.

• NFPA No. 58,American National Standard for Storage

and Handling of Liquefied Petroleum Gas, obtainable from

NFPA, above.

• NFPA No. 70, NFPA Handbook of National Electric

Code, obtainable from NFPA, above.

• NFPA No. 76A, Essential Electrical Systems for Health

Care Facilities, obtainable from NFPA, above.

• Article X, National Building Code, available from the

American Insurance Association, 1130 Connecticut Ave,

NW, Suite 1000,Washington, DC 20036; (202) 828-7100;

Fax (202) 293-1219; online at www.aiadc.org.

• Agricultural Wiring Handbook, obtainable from the

Food and Energy Council , 909 University Avenue,

Columbia, MO 65201; (573) 875-7155; online at

www.nfec.org/electricalwiring.htm.

• ASAE EP-3634, Installation and Maintenance of Farm

Backup Electrical Systems, available from the American

Society of Agricultural Engineers, 2950 Niles Road,

St. Joseph, MI, 49085-9659; (616) 429-0300; Fax

(616) 429-0385; online at www.asae.org.

Briggs & Stratton Power Products Home Generator System

Installation Manual

Fuel Comparison Chart

* LHV (Low Heat Value) is the more realistic rating.

** Gross Heat Value does not consider heat lost in the form of water during combustion.

*** Density is given in "Cubic Feet of Gas per Gallon of Liquid".

† Weight is given in "Pounds per Gallon of Liquid".

Size of Propane Tank Required at Various Temperatures When Kept at Least

Half Full

Given the gas withdrawal rate and the lowest average winter temperature, an installer can specify the required LP storage

tank size:

Physical Properties

Butane

Propane

Natural Gas

Normal Atmospheric State

Gas

Boiling Point (in °F):

Initial

-44

-259

End

-44

-259

Heating Value:

BTU per gallon (Net LHV*)

94,670

83,340

63,310

BTU per Gallon (Gross**)

102,032

91,547

Cubic Feet (Gas)

3,264

2,516

1,000

Density***

31.26

36.39

57.75

Weight†

4.81

4.24

2.65

Octane Number:

Research

110+

Motor

Fuel Comparison Chart

Withdrawal Rate

32°F

20°F

10°F

0°F

-10°F

-30°F

-40°F

50 CFH

115

250

400

600

100 CFH

250

400

500

1000

1500

150 CFH

300

400

500

1000

1500

2500

200 CFH

400

500

750

1000

1200

2000

2500

300 CFH

750

1000

1500

2000

2500

4000

5000

Required Propane Tank Size (Lowest Average Winter Temperature), in Gallons

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