Generac 04077-1, 04077-01, 04109-1, 04079-1, 00789-1 User Manual
...
POWER SYSTEMS, INC.
®
Installation, Start-up
and Adjustment Manual
Air-cooled, Prepackaged
Standby Generators
Models:
Nonsound Attenuated (Non-SA)
04077-1 (6 kW)
04109-1 (8 kW)
04079-1 (10 kW)
Sound Attenuated (SA)
00789-1 (8 kW)
00844-1 (8 kW)
ONLY QUALIFIED ELECTRICIANS OR CONTRACTORS
SHOULD ATTEMPT INSTALLATION!!
Generac®Power Systems, Inc.
INTRODUCTION
Thank you for purchasing a model of the Guardian
product line by Generac Power Systems Inc. These
models are compact, high performance, air-cooled,
engine-driven generators designed to automatically
supply electrical power to operate critical loads during a utility power failure.
This unit is factory installed in an all-weather, metal
enclosure that is intended exclusively for outdoor
installation. This generator will operate using either
vapor withdrawn liquid propane (LP) or
natural gas (NG).
READ THIS MANUAL THOROUGHLY
If you do not understand any portion of this manual,
contact Generac or your nearest Generac/Guardian
Authorized Dealer for starting, operating and
servicing procedures.
Throughout this publication, and on tags and
decals affixed to the generator, DANGER, WARNING,
CAUTION and NOTE blocks are used to alert you to
special instructions about a particular operation that
may be hazardous if performed incorrectly or carelessly. Observe them carefully. Their definitions are
as follows:
After this heading, you can read instructions that,
if not strictly complied with, will result in personal
injury or property damage.
After this heading, you can read instructions that,
if not strictly complied with, may result in personal
injury or property damage.
After this heading, you can read instructions that, if
not strictly complied with, could result in damage to
equipment and/or property.
NOTE:
After this heading, you can read explanatory
statements that require special emphasis.
These safety warnings cannot eliminate the hazards
that they indicate. Common sense and strict compliance with the special instructions while performing the
service are essential to preventing accidents.
Four commonly used safety symbols accompany the
DANGER, WARNING and CAUTION blocks. The type
of information each indicates follows:
This symbol points out important safety information that, if not followed, could endanger personal
safety and/or property of you and others.
This symbol points out potential explosion hazard.
This symbol points out potential fire hazard.
This symbol points out potential electrical shock
hazard.
The operator is responsible for proper and safe use
of the equipment. We strongly recommend that the
operator read the Owner's Manual and thoroughly
understand all instructions before using this equipment. We also strongly recommend instructing other
users to properly start and operate the unit. This prepares them if they need to operate the equipment in
an emergency.
OPERATION AND MAINTENANCE
It is the operator's responsibility to perform all safety checks, to make sure that all maintenance for safe
operation is performed promptly, and to have the
equipment checked periodically by a
Generac/Guardian Authorized Dealer. Normal maintenance service and replacement of parts are the
responsibility of the owner/operator and, as such, are
not considered defects in materials or workmanship
within the terms of the warranty. Individual operating
habits and usage contribute to the need for maintenance service.
Proper maintenance and care of your generator
ensure a minimum number of problems and keep
operating expenses at a minimum. See your
Generac/Guardian Authorized Dealer for service aids
and accessories.
HOW TO OBTAIN SERVICE
When your generator requires servicing or repairs,
simply contact a Generac/Guardian Authorized
Dealer for assistance. Service technicians are factorytrained and are capable of handling all of your
service needs.
When contacting a Generac/Guardian Authorized
Dealer or the factory about parts and service, always
supply the complete model number and serial number of your unit as given on its data decal, which is
located on the generator’s engine.
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AUTHORIZED
DEALER LOCATION
To locate the GENERAC/GUARDIAN AUTHORIZED
DEALER nearest you, please call this number:
1-800-747-1530
DEALER LOCATION INFORMATION
CAN BE OBTAINED AT THIS NUMBER.
Table of Contents
Guardian Air-cooled Generators
Generac® Power Systems, Inc. 1
Introduction ......................Inside Front Cover
Read This Manual Thoroughly ......................IFC
Operation and Maintenance............................IFC
How to Obtain Service....................................IFC
Authorized Dealer Location Number..................IFC
Safety Rules ......................................................2
Section 1 – Installation ..................................4
1.1 Introduction to Installation ..........................4
1.1.1 Installation Assistance......................4
1.1.2 Standards Index ..............................4
1.2 Unpacking....................................................4
1.2.1 Precautions ......................................4
1.2.2 Inspection ........................................4
1.3 Before Installation........................................5
1.4 Lifting the Generator....................................5
1.5 Engine Oil Recommendations ......................5
1.6 Gaseous Fuel System ..................................5
1.6.1 Fuel System Requirements
and Recommendations ....................5
1.6.2 Fuel Consumption ............................6
1.6.3 Fuel Pipe Sizing ................................6
1.6.4 Reconfiguring the Fuel System ........6
1.7 Location and Mounting ................................7
1.7.1 Generator ........................................7
1.7.1.1 6 kW, 8 kW and
10 kW Units (Non-SA) ......7
1.7.1.2
Sound Attenuated Units
....7
1.7.2 Transfer Switch................................7
1.7.2.1 6 Kw, 8 kW and
10 kW Units (Non-SA) ......7
1.7.2.2 Sound Attenuated Units ....7
1.8 Emergency Circuit Isolation Method ..........11
1.9 Total Circuit Isolation Method....................11
1.10 Generator AC Connection System..............12
1.11 Wiring Interconnections ..............................12
1.11.1 6 kW, 8 kW and
10 kW Units (Non-SA) ....................12
1.11.2 Sound Attenuated Units ................12
1.12 Generators and GTS Transfer Switches ....14
1.13 Control Circuit Interconnections................14
1.14 Adapting Three-phase Transfer Switch ......15
1.15 Control Board Configuration......................15
1.16 Grounding the Generator ..........................15
1.17 The Battery.................................................16
1.17.1 Battery Installation ........................17
1.18 The Fuse.............. ......................................17
1.19 Post Installation Inspection ........................17
Section 2 – Operation ..................................18
2.1 Using the Auto/Off/Manual Switch..............18
2.1.1 “Auto” Position................................18
2.1.2 “Off” Position..................................18
2.1.3 “Manual” Position ..........................18
2.2 Automatic Transfer Operation....................18
2.3 Sequence of Automatic Operation ..............19
2.4 Manual Transfer Operation........................19
2.4.1 Transfer to Generator
Power Source ..................................19
2.4.2 Transfer Back to Utility
Power Source ..................................20
2.5 Protection Systems ....................................20
2.5.1 Low Oil Pressure Switch ................20
2.5.2 High Temperature Switch ..............20
2.5.3 Overcrank ......................................20
2.5.3.1 Approximate Crank
Cycle Times ....................21
2.5.4 Overspeed ......................................21
2.6 Additional Generator Features ..................21
2.6.1 6 kW, 8 kW and
10 kW Units (Non-SA) ....................21
2.6.2 Sound Attenuated Units ................21
Section 3 – Post-installation Start-up
Adjustments..............................22
3.1 Before Initial Start-up ................................22
3.2 Check Transfer Switch Operation ..............22
3.3 Electrical Checks ......................................22
3.4 Generator Tests Under Load......................22
3.5 Checking Automatic Operation ..................23
3.6 Adjusting the Load Block ..........................23
3.7 Engine Governor Adjustment ....................24
3.7.1 6 kW Units (Non-SA) ......................24
3.7.2 8 kW and 10 kW Units (Non-SA)....24
3.7.3 Sound Attenuated Units ................25
3.8 Voltage Regulator Adjustment ....................25
3.9 Overspeed Calibration................................25
3.9.1 6 kW, 8 kW and
10 kW Units (Non-SA) ....................26
3.9.2 Sound Attenuated Units ................26
3.10 Setting the Exercise Timer ........................26
3.10.1 6 kW, 8 kW and
10 kW Units (Non-SA) ....................26
3.10.2 Sound Attenuated Units ................26
Section 4 – Troubleshooting ......................27
4.1 Troubleshooting Guide ..............................27
4.2 Installation Checklist ................................28
Section 5 – Notes ..........................................29
2 Generac®Power Systems, Inc.
Study these SAFETY RULES carefully before
installing, operating or servicing this equipment.
Become familiar with this Installation, Start-up and
Adjustment Manual and with the unit. The generator
can operate safely, efficiently and reliably only if it is
properly installed, operated and maintained. Many
accidents are caused by failing to follow simple and
fundamental rules or precautions.
Generac cannot possibly anticipate every possible cir
cumstance that might involve a hazard. The warnings in this manual, and on tags and decals
affixed to the unit are, therefore, not all-inclusive. If
you use a procedure, work method or operating technique Generac does not specifically recommend, you
must satisfy yourself that it is safe for you and others.
You also must make sure the procedure, work
method or operating technique that you choose does
not render the generator unsafe.
Despite the safe design of this generator,
operating this equipment imprudently, neglecting
its maintenance or being careless can cause
possible injury or death. Permit only responsible
and capable persons to operate or maintain this
equipment.
Potentially lethal voltages are generated by
these machines. Ensure all steps are taken to
render the machine safe before attempting to
work on the generator.
Parts of the generator are rotating and/or hot
during operation. Exercise care near running
generators.
GENERAL HAZ
ARDS
• For safety reasons, Generac recommends
that the installation, initial start-up and maintenance of this equipment is carried out by a
Generac/Guardian Authorized Dealer.
• The engine exhaust fumes contain carbon monoxide, which can be DEADLY. This dangerous gas, if
breathed in sufficient concentrations, can cause
unconsciousness or even death. This exhaust system must be installed properly, in strict compliance with applicable codes and standards.
Following installation, you must do nothing that
might render the system unsafe or in noncompliance with such codes and standards.
• Keep hands, feet, clothing, etc., away from drive
belts, fans, and other moving or hot parts. Never
remove any drive belt or fan guard while the unit is
operating.
• Adequate, unobstructed flow of cooling and ventilating air is critical to correct generator operation.
Do not alter the installation or permit even partial
blockage of ventilation provisions, as this can seriously affect safe operation of the generator. The
generator MUST be installed outdoors.
• When working on this equipment, remain alert at
all times. Never work on the equipment when you
are physically or mentally fatigued.
• Inspect the generator regularly, and contact your
nearest Generac/Guardian Authorized Dealer for
parts needing repair or replacement.
• Before performing any maintenance on the generator, disconnect its battery cables to prevent accidental start up. Disconnect the cable from the battery post indicated by a NEGATIVE, NEG or (–)
first. Reconnect that cable last.
• Never use the generator or any of its parts as a
step. Stepping on the unit can stress and break
parts, and may result in dangerous operating conditions from leaking exhaust gases, fuel leakage,
oil leakage, etc.
Important Safety Instructions
Guardian Air-cooled Generators
SAVE THESE INSTRUCTIONS – The manufacturer suggests that these rules for safe
operation be copied and posted near the unit’s installation site. Safety should be stressed to
all operators and potential operators of this equipment.
The engine exhaust from this product
contains chemicals known to the state
of California to cause cancer, birth
defects or other reproductive harm.
WARNING:
Generac®Power Systems, Inc. 3
ELECTRICAL HAZARDS
• All generators covered by this manual produce
dangerous electrical voltages and can cause fatal
electrical shock. Utility power delivers extremely
high and dangerous voltages to the transfer switch
as does the standby generator when it is in operation. Avoid contact with bare wires, terminals, connections, etc., while the unit is running. Ensure all
appropriate covers, guards and barriers are in
place before operating the generator. If you must
work around an operating unit, stand on an insulated, dry surface to reduce shock hazard.
• Do not handle any kind of electrical device while
standing in water, while barefoot, or while hands
or feet are wet. DANGEROUS ELECTRICAL
SHOCK WILL RESULT.
• The National Electrical Code (NEC) requires the
frame and external electrically conductive parts of
the generator to be connected to an approved earth
ground. Local electrical codes also may require
proper grounding of the generator electrical system.
• After installing this home standby electrical system, the generator may crank and start at any time
without warning. When this occurs, load circuits
are transferred to the STANDBY (generator) power
source. To prevent possible injury if such a start
and transfer occur, always set the generator’s
Auto/Off/Manual switch to its OFF position before
working on equipment and remove the fuse.
• In case of accident caused by electric 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 nonconducting 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.
• Never wear jewelry when working on this equipment. Jewelry can conduct electricity resulting in
electric shock, or may get caught in moving components causing injury.
FIRE HAZARDS
• For fire safety, the generator must be installed and
maintained properly. Installation always must
comply with applicable codes, standards, laws and
regulations. Adhere strictly to local, state and
national electrical and building codes. Comply
with regulations the Occupational Safety and
Health Administration (OSHA) has established.
Also, ensure that the generator is installed in
accordance with the manufacturer’s instructions
and recommendations. Following proper installation, do nothing that might alter a safe installation
and render the unit in noncompliance with the
aforementioned codes, standards, laws and regulations.
• Keep a fire extinguisher near the generator at all
times. Extinguishers rated “ABC” by the National
Fire Protection Association are appropriate for use
on the standby electric system. Keep the extinguisher properly charged and be familiar with its
use. If you have any question pertaining to fire
extinguishers, consult your local fire department.
EXPL
OSION HAZARDS
• Do not smoke around the generator. Wipe up any
fuel or oil spills immediately. Ensure that no combustible materials are left in the generator compartment, or on or near the generator, as FIRE or
EXPLOSION may result. Keep the area surrounding the generator clean and free from debris.
• Gaseous fluids such as natural gas and liquid
propane (LP) gas are extremely EXPLOSIVE.
Install the fuel supply system according to applicable fuel-gas codes. Before placing the home standby electric system into service, fuel system lines
must be properly purged and leak tested according
to applicable code. After installation, you must
inspect the fuel system periodically for leaks. No
leakage is permitted.
Important Safety Instructions
Guardian Air-cooled Generators
1.1 INTRODUCTION TO INSTALLATION
NOTE:
Read the entire manual before starting the installation. Ensure that the model number of the unit
being installed matches a model on the front cover.
Generac cannot possibly know of and advise the home
standby trade of all conceivable procedures and methods by which installation of this equipment might be
achieved. Neither can Generac know of possible hazards
and/or results of each method or procedure. We have
not undertaken any such wide evaluation.
1.1.1 INSTALLATION ASSISTANCE
1. For the Homeowner or Business Owner: You need
to have a certified electrician or contractor to
install this product. To arrange for proper installation, contact one of the following sources:
• Generac/Guardian Authorized Dealer: Look for
“Generac” or “Guardian” in your local Yellow
Pages under the classification “Generators –
Electric.”
• Heating and A/C Contractors: Look in your local
Yellow Pages under the classifications “Heating
Contractors” or “Air Conditioning Contractors.”
• Call us direct at (262) 544-4811 between the
hours of 8 a.m. and 5 p.m. CST. We will gladly
assist you in finding a local qualified installer.
2. For the Installing Dealer/Contractor: This manual
contains all the information required to properly
install and start a Guardian Power Systems generator in most applications. If you do need more
information, contact us directly at
(262) 544-4811, between the hours of 8 a.m. and
5 p.m., CST.
1.1.2 STANDARDS INDEX
In the absence of pertinent standards, codes, regulations and laws, the published information listed
below may be used as installation guide for this
equipment.
1. NFPA No. 37, STATIONARY COMBUSTION
ENGINES AND GAS TURBINES, available from
the National Fire Protection Association, 470
Atlantic Avenue, Boston, MA 02210.
2. NFPA No. 76A, ESSENTIAL ELECTRICAL SYSTEMS FOR HEALTH CARE FACILITIES, available
same as Item 1.
3. NFPA No. 54, NATIONAL FUEL GAS CODE, available same as Item 1.
4. NFPA No. 58, AMERICAN NATIONAL STANDARD
FOR STORAGE AND HANDLING OF LIQUEFIED
PETROLEUM GAS, available same as Item 1.
5. NFPA No. 70, NFPA HANDBOOK OF NATIONAL
ELECTRIC CODE, available same as Item 1.
6. Article X, NATIONAL BUILDING CODE, available
from the American Insurance Association, 85
John Street, New York, N.Y. 10038.
7. AGRICULTURAL WIRING HANDBOOK, available
from the Food and Energy Council, 909 University
Avenue, Columbia, MO 65201.
8. ASAE EP-3634, INSTALLATION AND MAINTENANCE OF FARM STANDBY ELECTRICAL SYSTEMS, available from the American Society of
Agricultural Engineers, 2950 Niles Road, St.
Joseph, MI 49085.
9. NFPA No. 30, FLAMMABLE AND COMBUSTIBLE
LIQUIDS CODE, available same as Item 1.
1.2 UNPACKING
1.2.1 PRECAUTIONS
Handle shipping cartons and crates with care. Use
care to avoid damage from dropping, bumping, collision, etc. Store and unpack crates and cartons with
the proper side up, as noted on the shipping carton.
1.2.2 INSPECTION
After unpacking, carefully inspect the contents
for damage that may have occurred during shipment
• This standby generator set has been factory sup-
plied with a weather protective enclosure that is
intended for outdoor installation only.
• The 6 kW, 8 kW and 10 kW standby generator sets
are packaged with an automatic transfer switch.
• This UL listed, two-pole switch is rated at 100 AC
amperes at 250 volts maximum. This transfer
switch is for indoor use only.
• All sound attenuated models have a built-in trans-
fer switch.
If this generator is used to power electrical load
circuits normally powered by a utility power
source, you are required by code to install a transfer switch. The transfer switch must effectively isolate the electrical system from the utility distribution system when the generator is operating (NEC
701). Failure to isolate an electrical system by such
means will result in damage to the generator and
also may result in injury or death to utility power
workers due to backfeed of electrical energy.
If any loss or damage is noted at time of delivery, have
the person(s) making the delivery note all damage on
the freight bill or affix his or her signature under the
consignor's memo of loss or damage.
If you note loss or damage after delivery, separate the
damaged materials and contact the carrier for claim
procedures.
“Concealed damage” is understood to mean damage
to the contents of a package that is not in evidence at
the time of delivery, but is discovered later.
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Section 1 — Installation
Guardian Air-cooled Generators
Only qualified electricians or contractors
should attempt such installations, which
must comply strictly with applicable
codes, standards and regulations.
DANGER:
4 Generac®Power Systems, Inc.
1.3 BEFORE INSTALLATION
Before installing this equipment, check the ratings of both
the generator and the transfer switch. Read “Emergency
Circuit Isolation Method” and “Total Circuit Isolation
Method” in Sections 1.8 and 1.9 (Page 11) carefully.
The generator's rated wattage/amperage capacity
must be adequate to handle all electrical loads that
the unit will power. You may have to group the critical (essential) electrical loads together and wire them
into a separate emergency distribution panel.
NOTE:
In some areas, you may need to acquire electrical
permits for installing an emergency system, building permits for installing gas lines, and permits for
noise allowances. Check your local codes before
installing the unit.
1.4 LIFTING THE GENERATOR
To lift a nonsound attenuated generator, insert pipe
having sufficient strength and diameter through the lifting holes (lifting brackets are provided with sound
attenuated units), which are located near the unit’s base
(see Figure 1.1). You also may lift the unit using a hook
and hoist method provided you use a spreader bar to
ensure that the lines clear the roof.
Figure 1.1 – Location of Lifting Holes/Brackets
When lifting or hoisting equipment is used, be
careful not to touch overhead power lines.
The generator’s weight of more than 300
pounds requires proper tools and equipment,
and qualified personnel to be used in all phases
of handling and unpacking.
Exercise caution when lifting the unit
manually as it may shift on lifting pipes during
transportation, which may result in injury.
The generator was not designed to be lifted by
its roof. Use the lifting holes or brackets provided
near the base of the unit. If using a hook and
hoist lifting method, you must employ a spreader
bar to prevent from crushing the roof.
1.5 ENGINE OIL RECOMMENDATIONS
Use oil of American Petroleum Institute (API) Service
Class SG, SH or SJ. Select the viscosity based on the
air temperature at the time of operation. See the following chart:
*Organic break-in oil is required before using synthetic oil.
Any attempt to crank or start the engine before
it has been properly serviced with the recommended oil may result in an engine failure.
1.6 GASEOUS FUEL SYSTEM
NOTE:
The following information pertaining to gaseous
fuel systems is provided to assist gaseous fuel
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.
1.6.1 FUEL SYSTEM REQUIREMENTS
AND RECOMMENDATIONS
When installing the fuel system, install a flexible
length of line between the generator fuel connection and the rigid piping. The flexible hose must
be approved for use with gaseous fuels. It is recommended that an emergency manual fuel shutoff
valve be placed in-line.
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Section 1 — Installation
Guardian Air-cooled Generators
Generac®Power Systems, Inc. 5
Temperature Oil Grade (Recommended)
Above -7º C (20º F) SAE 10W-30 or SAE 30
Below -7º C (20º F) SAE 5W-20 or 5W-30
All Seasons SAE 5W-30 Synthetic*
(6 kW, 8 kW and 10 kW)
(Sound Attenuated)
LIFTING BRACKET
6 Generac®Power Systems, Inc.
With LP gas, use only the vapor withdrawal system.
This type of system uses the vapors formed above the liquid fuel in the storage tank.
The engine has been fitted with a fuel carburetion system that meets the specifications of the 1997 California
Air Resources Board for tamper-proof dual fuel systems. The unit will run on natural gas or LP gas, but it
has been factory set to run on natural gas. Should the
primary fuel need to be changed to LP gas, the fuel system needs to be reconfigured. See Section 1.6.4 (Page
6) for instructions on reconfiguration of the fuel system.
Recommended fuels should have a Btu content of at
least 1,000 Btus per cubic foot for natural gas; or at
least 2,520 Btus per cubic foot for LP gas. Ask your fuel
supplier for the Btu content of your fuel.
Fuel pressure for both natural gas and liquid propane
(LP) vapor set ups MUST be 11 inches to 14 inches of
water column (0.6 psi) at all load ranges.
1.6.2 FUEL CONSUMPTION
See the following chart for fuel supply requirements at
half and full load for both natural gas and LP vapor.
*Natural gas is in cubic feet per hour.
**LP is in gallons per hour/cubic feet per hour.
Gaseous fuels such as natural gas and liquid
propane (LP) gas are highly explosive. Even the
slightest spark can ignite such fuels and cause
an explosion. No leakage of fuel is permitted.
Natural gas, which is lighter than air, tends to
collect in high areas. LP gas is heavier than air
and tends to settle in low areas.
1.6.3 FUEL PIPE SIZING
See the following chart for proper sizing of fuel supply
piping. Insufficient fuel pipe size can cause hard starting, poor engine performance and inability to carry
load.
NG and LP Vapor Pipe Sizing Chart:
1.6.4 RECONFIGURING THE FUEL SYSTEM
To reconfigure the fuel system from NG to LP,
follow these steps:
1. Remove the carburetor fuel hose from the natural
gas port of the fuel load block and the brass fitting (Figure 1.2).
2. Remove the blanking plug from the LP port of the
load block (Figure 1.2).
Figure 1.2 – Natural Gas Setup`
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Section 1 — Installation
Guardian Air-cooled Generators
Model # Nat. Gas (*) LP Vapor (**)
1/2 Load Full Load 1/2 Load Full Load
6 kW 74.1 105.3 0.86/31.30 1.08/39.30
8 kW 79.7 140.0 1.07/38.94 1.56/56.77
10 kW 100.8 177.9 1.16/42.21 2.15/78.24
Sound Attn. 84.6 126.6 1.06/38.57 1.7/61.86
Length of Pipe Iron Pipe Size (IPS Inches)
½" ¾" 1" 1 ¼" 1 ½" 2"
15' 76 172 345 750 1,220 2,480
30' 52 120 241 535 850 1,780
45' 43 99 199 435 700 1,475
60' 38 86 173 380 610 1,290
75' 77 155 345 545 1,120
90' 70 141 310 490 1,000
105 65 131 285 450 920
120 120 270 420 860
150 109 242 380 780
180 100 225 350 720
210 92 205 320 660
240 190 300 620
270 178 285 580
300 170 270 545
450 140 226 450
600 119 192 390
Consumption in
Cubic Feet Per Hour
Generac®Power Systems, Inc. 7
3. Refit the fitting and hose to the LP port and
the blanking plug to the natural gas port
(Figure 1.3).
4. Reverse the procedure to convert back to
natural gas.
NOTE:
The natural gas adjustment screw is preset during
installation and should not need any further
adjustment.
Figure 1.3 – LP Gas Setup
1.7 LOCATION AND MOUNTING
1.7.1 GENERATOR
Install the generator set, in its protective enclosure,
outdoors, where adequate cooling and ventilating air
always is available. Consider these factors:
• 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 consider using a windbreak
to protect the unit.
• Install the generator on high ground where water
levels will not rise and endanger it.
• Allow sufficient room on all sides of the generator
for maintenance and servicing. A good rule is to
allow 3 feet of space on all sides.
• Where strong prevailing winds blow from one
direction, face the generator air inlet openings into
the prevailing winds.
• Install the generator as close as possible to the
transfer switch. This reduces the length of wiring
and conduit.
• Install the generator as close as possible to the fuel
supply, to reduce the length of piping. HOWEVER,
REMEMBER THAT LAWS OR CODES MAY REGULATE THE DISTANCE.
1.7.1.1 6 kW, 8 kW and 10 kW Units (Non-SA)
These Guardian units are supplied with their own
mounting pads and DO NOT require a concrete pad.
Remove the packing material from the unit and unbolt
the two 4-inch by 4-inch wooden blocks from the
underside of the mounting base. Plug the holes with the
plugs provided. Prepare the installation site to accept
the mounting base. Provide adequate substrate to give
sufficient drainage, i.e., a 3-inch deep section of pea
gravel scattered under the mounting base.
See Figure 1.4 (Pages 8-9) for generator and transfer
switch major dimensions.
1.7.1.2 Sound Attenuated Units
Retain the generator compartment to a concrete slab
with 1/4-inch masonry type anchor bolts. Be sure the
bolts are long enough to retain the compartment. The
slab should be at least 3 inches thick and should
extend beyond the enclosure to a distance of at least
3 inches on all sides.
See Figure 1.5 (Page 10) for generator major
dimensions.
1.7.2 TRANSFER SWITCH
1.7.2.1 6 kW, 8 kW and 10 kW Units (Non-SA)
The transfer switch shipped with this generator is
enclosed in a NEMA 1 enclosure. This type of enclosure is intended for indoor use only. Follow these
rules:
• Install the transfer switch indoors on a firm, sturdy supporting structure.
• To prevent switch distortion, level the switch
if necessary. This can be done by placing
washers between the switch enclosure and
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.
1.7.2.2 Sound Attenuated Units
All sound attenuated models have a transfer switch
built into the enclosure and do not require a separate
switch attachment.
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Section 1 — Installation
Guardian Air-cooled Generators
8 Generac®Power Systems, Inc.
Figure 1.4 – Generator and Transfer Switch Mounting Dimensions (6 kW, 8 kW and 10 kW Non-SA)
Section 1 — Installation
Guardian Air-cooled Generators
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