Briggs & Stratton 1931-0 Installation and operation manual

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.briggspowerproducts.com
Model 01931-0 Part No. 194104GS Rev. 0 (10/16/03)

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Briggs & Stratton Power Products Home Generator
Installation Manual
TABLE OF CONTENTS 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 owner’s manual (part number 194103GS) contains
specifications, operating and maintenance instructions for
this model.
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 Owner’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
Owner’s Manual.
INSTALLER
RESPONSIBILITIES
• Read and observe the safety rules.
• Read and follow the instructions given in this Installation
and Start-up Manual.
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
Approved Transfer Switches . . . . . . . . . . . . . . . . . . . . 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) . . . . . . . . . . . . . . . . . . 13
Engine Adjustment . . . . . . . . . . . . . . . . . . . . . . . . . . . 14
AUTOMATIC OPERATION SEQUENCE . . . . . . . . . 14-15
SETTING EXERCISE TIMER . . . . . . . . . . . . . . . . . . . . . . 15
INSTALLATION INSPECTION . . . . . . . . . . . . . . . . . . . . 15
Fuel Comparison Chart . . . . . . . . . . . . . . . . . . . . . . 16
Size of Propane Tank Required at Various Temperatures
When Kept at Least Half Full . . . . . . . . . . . 16
NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

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Briggs & Stratton Power Products Home Generator
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 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 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 3 feet of clearance on all sides of generator for
adequate ventilation.
• 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.
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 Standby Generator 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
• DO NOT tamper with engine governed speed.
High operating speeds are dangerous and increase the risk
of personal injury or damage to equipment.
CAUTION

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Briggs & Stratton Power Products Home Generator
Installation Manual
INSTALLATION
PROCEDURES
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.
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 194104GS)
• Owner’s manual(P/N 194103GS)
• Illustrated parts list manual (P/N 193209GS)
• Product warranty sheet (P/N 190881GS)
• 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))
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
Approved Transfer Switches
The Home Standby Generator should be used ONLY with
the following UL approved Transfer Switches. Connection
to any other transfer switch not listed below will void your
equipment warranty.
• 50A Nema 1 enclosure, BSPP Model 01917
• 50A Nema 3R enclosure, BSPP Model 01918
• 100A Nema 3R enclosure, BSPP Model 01813
• 100A Nema 3R enclosure w/ main line disconnect, BSPP
Model 01928
• 200A Nema 3R enclosure, BSPP Model 01814
• 200A Nema 3R enclosure w/ main line disconnect, BSPP
Model 01929
Home Standby Generator Location
TO THE INSTALLER: Consult with the owner(s)
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. Leave at least 3 ft. (92 cm) all
around the enclosure for access to the inside of the enclosure.
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).
Figure 1 — Home Standby Generator Clearances
Exhaust port must be
5 ft (152 cm) minimum
distance from building
openings
Exhaust
Port
• 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.
Installing the 15A fuse could cause the engine to start.
CAUTION

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Briggs & Stratton Power Products Home Generator
Installation Manual
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.
• 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 Standby Generator 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 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.
CAUTION! DO NOT lift unit by roof as damage to
generator will occur.
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 (next page).
CAUTION! The unit may shift on the lifting pipes
during movement, which may cause injury.
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”

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Briggs & Stratton Power Products Home Generator
Installation Manual
WARNING! If lifting or hoisting equipment is
used, be careful not to touch any overhead power
lines.
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
Each Home Standby Generator is equipped with three
identical keys.These keys fit the locks that secure the Oil
Service and Control Panel doors.
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.
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
CAUTION
• Failure to install Oil Service and/or Control Panel doors while
operating the Home Standby Generator will cause overheating.
DO NOT operate the Home Standby Generator unless
the Oil Service and/or Control Panel doors are installed.

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Briggs & Stratton Power Products Home Generator
Installation Manual
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.
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
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.
• Install flexible gaseous pipe (supplied) between the Home
Standby Generator Fuel Inlet port and rigid piping.
The information provided below is to assist
gaseous fuel system technicians in planning
installations. In no wayshould 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.
• DO NOT touch hot surfaces.
• Allow equipment to cool before touching.
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.
WARNING
• 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.
The supplied flexible gaseous pipe is not to be installed
underground or in contact with the ground.
CAUTION
• 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.
Propane and Natural Gas is extremely
flammable and explosive.
Fire or explosion can cause severe burns or
death.
WARNING

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Briggs & Stratton Power Products Home Generator
Installation Manual
• 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 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 manual shutoff valve should be placed
in the fuel supply 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 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.
• 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 5), 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 6.
Figure 6 — Completed Fuel Connections
Figure 5 — Temporary Manometer Installed
From Fuel
Supply Line
To Home Standby
Generator
• Before placing the Home Standby Generator into service, the
fuel system lines must be properly purged and leak tested.
• NO leakage is permitted.
Propane and Natural Gas is extremely
flammable and explosive.
Fire or explosion can cause severe burns or
death.
WARNING

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Briggs & Stratton Power Products Home Generator
Installation Manual
Fuel Consumption
See Figure 7 for fuel supply requirements at half and full
load for both natural gas and LP vapor.
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.
NPT
10ft
15ft
20ft
30ft
40ft
50ft
60ft
70ft
80ft
90ft
100ft
½”
110
96
76
61
52
46
42
38
36
33
32
¾”
277
192
158
126
107
95
87
79
74
69
65
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
93
79
70
63
59
55
51
48
¾”
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)
Liquefied Petroleum (LP) (sg=1.50)
Figure 9 — LIQUEFIED PETROLEUM (LP) GAS Pipe Size - Gas Flow Chart, in cubic feet per hour
Model
Natural
Gas*
LP
Vapor **
1/2
Load
Full
Load
1/2 Load
Full Load
1931-0
84
162
34.19
65.81
Figure 7 — Fuel Supply Requirements
* = Natural Gas is in cubic feet per hour
** = LP Vapor is in cubic feet per hour
Figure 8 — NATURAL GAS (NG) Pipe Size - Gas Flow Chart, in cubic feet per hour

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Briggs & Stratton Power Products Home Generator
Installation Manual
50/60 Hz Switch
12 Volt DC,
.5 Amp Output Exercise Failure Remote LED Output
Emergency Failure
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.
KNOWYOUR SYSTEM CONTROL BOARD
Compare this Control Board illustration with your generator to familiarize yourself with the location of these important
controls and connections: