Generac Power Systems 22 kW User manual

Owner’s Manual
For
Spark-Ignited Stationary Emergency Generators
Residential and Commercial
This manual should remain with the unit.
This manual must be used in conjunction
with the appropriate installation manual.
*NOT INTENDED FOR USE IN CRITICAL
LIFE SUPPORT APPLICATIONS.
*ONLY QUALIFIED ELECTRICIANS OR
CONTRACTORS SHOULD ATTEMPT
INSTALLATION!
*DEADLY EXHAUST FUMES! OUTDOOR
INSTALLATION ONLY!
22 kW 2.4L
25 kW 1.5L
27 kW 2.4L
30 kW 1.5L
32 kW 2.4L
36 kW 2.4L
38 kW 2.4L
45 kW 2.4L
48 kW 5.4L
60 kW 2.4L
Para español , visita: http://www.generac.com/service‐support/product‐support‐lookup
Pour le français, visiter : http://www.generac.com/service‐support/product‐support‐lookup

ii Owner’s Manual for Stationary Emergency Generators
Use this page to record important information about
the generator set.
For quick and easy reference, copy the information
printed on the Unit Identification Label onto the sample
label printed here. The Unit Identification Label is
located on the base frame adjacent to the front engine
mount on all models.
When contacting an Independent Authorized Service
Dealer about parts and/or service, always provide the
complete model number and serial number.
Operation and Maintenance: Proper maintenance and
care of the generator ensures safe operation and longer
service life while also keeping operating expenses to a
minimum. It is the operator’s responsibility to perform all
safety checks, to make sure that all maintenance is per-
formed promptly, and to have the equipment checked
periodically by an Independent Authorized Service
Dealer.
Normal maintenance, service and replacement of parts
are the responsibility of the owner/operator, and are not
considered defects in materials or workmanship within
the terms of the warranty. Individual operating habits
and usage may contribute to the need for additional
maintenance or service.
When the generator requires servicing or repairs, con-
tact an Independent Authorized Service Dealer for
assistance. Authorized service technicians are factory-
trained and are capable of handling all service needs.
SAMPLE LABEL
AUTHORIZED
SERVICE DEALER LOCATION
To locate the nearest
INDEPENDANT AUTHORIZED SERVICE
DEALER,
please call this number:
1-800-333-1322
or visit the dealer locator at:
www.generac.com/Service/DealerLocator/

Table of Contents
Owner’s Manual for Stationary Emergency Generators iii
Section 1 Safety
1.1 Introduction .......................................................................................................................... 1
1.2 Safety Information ................................................................................................................ 2
1.3 General Hazards ................................................................................................................... 2
1.4 Exhaust Hazards .................................................................................................................. 3
1.5 Electrical Hazards ................................................................................................................ 3
1.6 Fire Hazards .......................................................................................................................... 3
1.7 Explosion Hazards ............................................................................................................... 3
Section 2 Specifications
2.1 Emission Information .......................................................................................................... 5
2.1.1 Emissions Data Plate .................................................................................................................... 5
2.2 Specifications ....................................................................................................................... 6
2.3 Engine Oil Recommendations ............................................................................................ 7
2.4 Weather and Maintenance Kits ........................................................................................... 8
2.5 Coolant Water Treatment ....................................................................................................8
2.6 Fuel Requirements ............................................................................................................... 8
2.7 Reconfiguring the Fuel System .......................................................................................... 9
2.7.1 Fuel Conversion Procedure from NG to LPV ................................................................................9
2.7.2 Change Fuel Selection ...............................................................................................................10
2.8 Battery Requirements ........................................................................................................ 10
2.8.1 Battery Charger .......................................................................................................................... 10
2.9 Corrosion Protection ......................................................................................................... 10
Section 3 Activation and Startup
3.1 Orientation .......................................................................................................................... 11
3.2 Remove Side Access Panels ............................................................................................ 11
3.3 Install Battery ..................................................................................................................... 12
3.4 Open Viewing Window ....................................................................................................... 12
3.5 Activate Unit ...................................................................................................................... 13
3.6 Start and Run Engine ......................................................................................................... 14
3.7 Operational Checks ........................................................................................................... 15
3.7.1 Self Test ...................................................................................................................................... 15
3.7.2 Check Manual Transfer Switch Operation ..................................................................................15
3.7.3 Electrical Checks ........................................................................................................................15
3.7.4 Test Generator Under Load ........................................................................................................16
3.7.5 Check Automatic Operation ........................................................................................................ 16
3.8 Final Instructions ............................................................................................................... 17
Table of Contents

Table of Contents
iv Owner’s Manual for Stationary Emergency Generators
Section 4 Operation
4.1 Control Panel ......................................................................................................................19
4.2 Auto/Manual/Off ..................................................................................................................19
4.3 Menu Navigation .................................................................................................................20
4.4 Alarm/Warning Conditions ................................................................................................23
4.5 Change Time and Date .......................................................................................................23
4.6 Programmable Timers ........................................................................................................23
4.6.1 Dealer Programmable ................................................................................................................ 23
4.6.1.1 Exercise Time ..................................................................................................................... 23
4.6.2 User Programmable ................................................................................................................... 24
4.6.2.1 Start-Up Delay Timer .......................................................................................................... 24
4.6.2.2 Warm-Up Delay Timer ........................................................................................................ 24
4.7 USB Port for Firmware Updates ........................................................................................24
4.8 Battery Charger ..................................................................................................................24
4.9 Transfer Switch Automatic Operation ..............................................................................24
4.9.1 Automatic Sequence of Operation .............................................................................................. 25
4.9.1.1 Utility Failure ....................................................................................................................... 25
4.9.1.2 Cranking.............................................................................................................................. 25
4.9.1.3 Load Transfer...................................................................................................................... 25
4.10 Transfer Switch Manual Operation .................................................................................25
4.10.1 Transfer to Generator Power .................................................................................................... 26
4.10.2 Transfer Back to Utility Power .................................................................................................. 26
Section 5 Maintenance
5.1 Component Locations ........................................................................................................27
5.2 Access Panels ....................................................................................................................28
5.2.1 Removal ..................................................................................................................................... 28
5.2.2 Installation .................................................................................................................................. 28
5.3 Service Maintenance Intervals ..........................................................................................29
5.4 Remove From Service ........................................................................................................30
5.5 30 Hour Break-In .................................................................................................................30
5.6 Daily Maintenance ..............................................................................................................30

Table of Contents
Owner’s Manual for Stationary Emergency Generators v
5.7 Schedule A Maintenance ................................................................................................... 31
5.7.1 Schedule A Maintenance Item Locations ...................................................................................31
5.7.2 Preliminary Instructions .............................................................................................................. 31
5.7.3 Check Enclosure Louvers ........................................................................................................... 31
5.7.4 Check Fuel Lines ........................................................................................................................ 31
5.7.5 Check Coolant Level and Hoses ................................................................................................ 32
5.7.6 Check Radiator for Clogging ....................................................................................................... 32
5.7.7 Check Lubricating Oil Level and Drain Hose ..............................................................................32
5.7.8 Replace Lubricating Oil and Oil Filter ......................................................................................... 33
5.7.9 Check Battery Condition/Fluid Level ...........................................................................................37
5.7.9.1 Check Condition and Clean ................................................................................................ 37
5.7.9.2 Check Fluid Level ............................................................................................................... 37
5.7.9.3 Check State of Charge........................................................................................................ 37
5.7.9.4 Battery Replacement .......................................................................................................... 37
5.7.10 Check and Adjust Accessory/Drive Belt ...................................................................................38
5.7.10.1 Check................................................................................................................................ 38
5.7.10.2 Adjust ................................................................................................................................ 38
5.7.11 Replace Air Filter Element ........................................................................................................ 39
5.7.12 Final Instructions ....................................................................................................................... 40
5.8 Schedule B Maintenance ................................................................................................... 41
5.8.1 Schedule B Maintenance Item Locations ...................................................................................41
5.8.2 Drain/Flush Coolant System .......................................................................................................41
5.8.3 Clean/Gap/Replace Spark Plugs ................................................................................................42
5.8.4 Final Instructions ......................................................................................................................... 43
5.9 Schedule C Maintenance ................................................................................................... 44
5.10 Return To Service ............................................................................................................ 44
5.11 Lube Oil Maintainer System ............................................................................................ 45
5.11.1 Description ................................................................................................................................45
5.11.2 Fill Oil Supply Tank ................................................................................................................... 45
5.11.3 Test Functionality ......................................................................................................................46
5.11.4 Shutoff Valve ............................................................................................................................ 46
Section 6 Troubleshooting
6.1 Engine Troubleshooting .................................................................................................... 47
6.2 Controller Troubleshooting ............................................................................................... 48
6.3 Removal From Service During Utility Outages ............................................................... 49
6.4 Storage ................................................................................................................................ 49
6.4.1 Prepare For Storage ................................................................................................................... 49
6.4.2 Return From Storage .................................................................................................................. 50
6.5 Attention After Submersion .............................................................................................. 51

Table of Contents
vi Owner’s Manual for Stationary Emergency Generators
(000004)
WARNING
California Proposition 65. Engine exhaust and some of
its constituents are known to the state of California to
cause cancer, birth defects, and other reproductive
harm.
(000005)
WARNING
California Proposition 65. This product contains or
emits chemicals known to the state of California to
cause cancer, birth defects, and other reproductive
harm.

Owner’s Manual for Stationary Emergency Generators 1
Section 1 Safety
1.1 — Introduction
Thank you for purchasing this stationary automatic standby generator set. Every effort was made to ensure that the
information in this manual was both accurate and complete at the time it was released. However, the manufacturer
reserves the right to change, alter or otherwise improve this product at any time without prior notice.
This generator is designed to automatically supply electrical power to operate critical loads during a utility power failure.
The unit is factory installed in an all-weather metal enclosure and is intended exclusively for outdoor installation
using either Natural gas (NG) or Liquid Propane vapor (LPV).
NOTE: All 22-48 kW units are field convertible between NG or LPV, while 60 kW units are built per fuel require-
ments and are not field convertible.
When properly sized, the generator is suitable for supplying typical residential/commercial loads, such as induction
motors (sump pumps, refrigerators, freezers, air conditioners, furnaces, etc.), electronic components (computers, mon-
itors, televisions, etc.), lighting, microwaves, and other residential and business loads.
READ THIS MANUAL THOROUGHLY: The operator is responsible for proper and safe use of this equipment. Read
and thoroughly understand the contents of this manual before attempting to use the equipment. If any portion of this
manual is not fully understood, contact the nearest Independent Authorized Service Dealer for assistance.
SAVE THESE INSTRUCTIONS: The manufacturer suggests that this manual and the rules for safe operation be cop-
ied and posted near the generator installation site. Safety should be stressed to all operators and potential operators of
this equipment.
SAFETY: Throughout this manual, and on tags and decals affixed to the unit, DANGER, WARNING, CAUTION and
NOTE blocks are used to alert personnel to special instructions about a particular operation, function or service that
may be hazardous if performed incorrectly or carelessly. Observe them carefully. Their definitions are as follows:
INDICATES A HAZARDOUS SITUATION OR ACTION WHICH, IF NOT AVOIDED, WILL RESULT IN DEATH OR SERIOUS
INJURY.
Indicates a hazardous situation or action which, if not avoided, could result in death or serious injury.
Indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTE: Notes contain additional information important to an operation or procedure.
Four commonly used safety symbols accompany the DANGER, WARNING and CAUTION blocks. The type of informa-
tion each indicates is as follows:
This symbol points out important Safety Information that, if not followed, could endanger personal safety and/or
property of others.
This symbol points out a potential Explosion Hazard.
This symbol points out a potential Fire Hazard.
This symbol points out a potential Electrical Shock Hazard.
These “Safety Alerts” cannot eliminate the hazards that they signal. Strict compliance with these special instructions,
plus common sense, are major accident prevention measures.
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Safety
2Owner’s Manual for Stationary Emergency Generators
1.2 — Safety Information
Study these safety rules carefully before operating or servicing this equipment. Become familiar with this Owner’s Man-
ual 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 rules or precautions.
The manufacturer cannot anticipate every possible circumstance that might involve a hazard. The warnings in this
manual, and on tags and decals affixed to the unit are not all-inclusive. If using a procedure, work method or operating
technique the manufacturer does not specifically recommend, ensure that it is safe for personnel. Also make sure the
procedure, work method or operating technique used does not render the generator unsafe.
Despite the safe design of this generator, operating this equipment imprudently, neglecting its mainte-
nance or being careless can cause possible injury or death. Permit only responsible and capable per-
sons to install, operate and maintain this equipment.
Potentially lethal voltages are generated by these machines. Ensure steps are taken to make the
machine safe before attempting to work on the generator.
Parts of the generator are rotating and/or hot during operation. Exercise care near a running generator.
The installation of this generator must always comply with applicable codes, standards, laws and regu-
lations.
A running generator gives off DEADLY carbon monoxide, an odorless, colorless, poisonous gas.
Breathing carbon monoxide can cause dizziness, throbbing temples, nausea, muscular twitching, head-
ache, vomiting, weakness, sleepiness, inability to think clearly, fainting, unconsciousness or even
death.
The control panel for this unit is intended to be operated by qualified service personnel only.
1.3 — General Hazards
•For safety reasons, this equipment should only be installed, serviced and repaired by a Service Dealer or other
competent, qualified electrician or installation technician who is familiar with applicable codes, standards, regula-
tions and product Installation Manual guidelines. The operator also must comply with all such codes, standards,
regulations and product Installation Manual guidelines.
•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. DO NOT alter or add to the exhaust system
or do anything that might render the system unsafe or in noncompliance with applicable codes and standards.
•Install a carbon monoxide alarm indoors, according to manufacturer’s instructions/recommendations.
•Adequate, unobstructed flow of cooling and ventilating air is critical for 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 and operated outdoors only.
•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.
•When working on this equipment, remain alert at all times. Never work on the equipment when physically or men-
tally fatigued.
•Inspect the generator regularly, and contact the nearest Dealer for parts needing repair or replacement.
•Before performing any maintenance on the generator, remove the control panel fuse and disconnect the Nega-
tive (-) battery cable to prevent accidental startup. When disconnecting battery cables always remove the NEGA-
TIVE (-) cable first. When reconnecting the cables, connect the POSITIVE (+) cable first.
•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.
*
*
*
*
*
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Safety
Owner’s Manual for Stationary Emergency Generators 3
1.4 — Exhaust Hazards
•Generator engine exhaust contains DEADLY carbon monoxide, an odorless, colorless, poisonous gas. Breathing
carbon monoxide can cause dizziness, throbbing temples, nausea, muscular twitching, headache, vomiting,
weakness, sleepiness, inability to think clearly, fainting, unconsciousness or even death. If any carbon monoxide
poisoning symptom is experienced, move into fresh air and immediately seek medical attention.
•This generator is designed for OUTDOOR installation ONLY. Never operate the generator inside any garage or
other enclosed space.
1.5 — Electrical Hazards
•All generators covered by this manual produce dangerous electrical voltages that 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 run-
ning. Ensure all appropriate covers, guards and barriers are in place, secured and/or locked before operating the
generator. If work must be done around an operating unit, stand on an insulated, dry surface to reduce potential
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 MAY RESULT.
•The generator may crank and start at any time when utility power is lost. When this occurs, load circuits are
transferred to the STANDBY (generator) power source. Before working on the generator, always move the Main
Circuit Breaker switch on the control panel down to the OFF (Open) position, press the OFF key on the control
panel keypad, remove the 7.5 amp fuse, and disconnect the battery negative cable (black) from the battery neg-
ative (-) terminal.
•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 dry 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 parts resulting in injury.
1.6 — Fire Hazards
•For fire safety, the generator must be installed and maintained properly. Installation MUST always comply with
applicable codes, standards, laws, regulations and product Installation Manual guidelines. Adhere strictly to
local, state, and national electrical and building codes. Comply with regulations of the Occupational Safety and
Health Administration (OSHA). 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 generator. Keep the extinguisher properly charged and be
familiar with its use. Consult the local fire department with any questions pertaining to fire extinguishers.
1.7 — Explosion Hazards
•Do not smoke around the generator. Wipe up any fuel or oil spills immediately. Ensure that no combustible mate-
rials 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.
If this generator is used to power electrical load circuits normally powered by a utility power source,
it is required by code to install a transfer switch. The transfer switch must effectively isolate the elec-
trical system from the utility distribution system when the generator is operating (NEC 702). 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.
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Safety
4Owner’s Manual for Stationary Emergency Generators
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Owner’s Manual for Stationary Emergency Generators 5
Section 2 Specifications
2.1 — Emission Information
The U.S. Environmental Protection Agency (EPA) requires that the generator comply with exhaust emission standards.
The generator is certified to meet the applicable EPA emission levels, and is certified for use as a stationary engine for
standby power generation. Any other use may be a violation of federal and/or local laws. To ensure that the engine
complies with the applicable emission standards for the duration of the engine’s life, it is important to follow the mainte-
nance specifications in Section 5.
2.1.1— Emissions Data Plate
A data plate is attached to the valve cover to verify compliance with EPA emissions regulations.
Figure 2-1. Emissions Data Plate (Sample)

Specifications
6Owner’s Manual for Stationary Emergency Generators
2.2 — Specifications
Model 22 kW 25 kW 27 kW 30 kW 32 kW 36 kW 38 kW 45 kW 48 kW 60 kW
Engine 2.4L 1.5L 2.4L 1.5L 2.4L 2.4L 2.4L 2.4L 5.4L 2.4L
Generator Set
Rotor Insulation Class H Class F Class H Class F Class H Class F Class H
Stator Insulation Class H
Dimensions L x W x H 62.2 x 30.6 x 38.6 76.8 x 35 x 46.1
Product Weight W/ Steel
Enclosure (lbs) – 865 – 895 – 1255 – 1283
Product Weight W/ Aluminum
Enclosure (lbs) 900 777 940 807 1225 1235 1202 1555 1230
Shipping Weight W/ Steel
Enclosure (lbs) – 931 – 961 – 1355 – 1383
Shipping Weight W/ Aluminum
Enclosure (lbs) 966 843 1006 873 1325 1335 1302 1302 1655 1330
Engine System
Type In-Line V-type In-Line
Dry Weight (lbs) 287 243 287 243 287 527 287
Bore (in/mm) 3.41/86.5 3.05/77.4 3.41/86.5 3.05/77.4 3.41/86.5 3.55/90.2 3.41/86.5
Stroke (in/mm) 3.94/100 3.13/79.5 3.94/100 3.13/79.5 3.94/100 4.17/105.9 3.94/100
Displacement (liters) 2.4 1.5 2.4 1.5 2.4 5.4 2.4
Firing Order 1-3-4-2 1-3-7-2-
6-5-4-8 1-3-4-2
Direction or Rotation CW From Flywheel
Compression Ratio 9.5:1 11:1 9.5:1 11:1 9.5:1 9:1 9.5:1
Spark Plug Gap (mm) 1.07-1.17 0.9 1.07-1.17 0.9 0.71 1.07-1.17 0.71 1.07-1.17 1.29-1.45 0.71
Cooling System
Water Pump Belt Driven
Fan Speed (rpm) 1980 2484 1980 2484 1500 1865 1500 1865 1954 2100
Fan Diameter (inches) 18.1 17.7 18.1 17.7 22.0
Fan Mode Pusher Puller
Air Flow (ft3/min.) 2400 2490 2400 2490 2200 2725 2200 2725 4350 3280
Coolant Capacity (gallons/
liters) 2.5/9.5 2.0/7.6 2.5/9.5 2.0/7.6 2.5/9.5 3.0/11.4 2.5/9.5
Heat Rejection
to Coolant (Btu/h) 99,000 112,000 105,000 135,000 145,000 193,000 145,000 193,000 186,000 270,000
Max Operating Air Temp on
Radiator 150° F (60° C)
Max Ambient Temp 140° F (50° C)
Thermostat (Full Open) 190° F (88° C)
Lubricating System
Oil Pump Type Gear
Oil Filter Type Full Flow Spin-On Cartridge
Crankcase Oil Capacity
(quarts/liters) 4/3.8 6/5.7 4/3.8
Lubricating Oil Type 5W-30
Air Intake System
Type Naturally Aspirated Turbo/
Aftercooled
Naturally
Aspirated
Turbo/
Aftercooled Naturally Aspirated Turbo/
Aftercooled
Exhaust System

Specifications
Owner’s Manual for Stationary Emergency Generators 7
A complete specification sheet is included in the documentation provided with the unit at the time of purchase. For
additional copies, consult your local Independent Authorized Service Dealer.
2.3 — Engine Oil Recommendations
To maintain the product warranty, use only genuine Generac replacement parts. Generac maintenance kits include
both the oil filter and air filter, and can be obtained through any Authorized Dealer.
Although the unit is filled at the factory with 5W-20 engine oil, replace with 5W-30 engine oil at the first oil change which
is due at 30 hours break-in. Select a high-quality detergent oil classified “SJ or SH.” Detergent oils keep the engine
cleaner and reduce carbon deposits. After break-in, a synthetic oil that meets or exceeds SAE specifications is recom-
mended. Once synthetic oil is used, it should be used for the life of the generator. It is not recommended to go back to
a mineral oil. Do not use special additives.
NOTE: If not already equipped, it is strongly recommended to use the optional Cold Weather Start Kit for tem-
peratures below 32°F. The oil grade for temperatures below 32°F is 5W-30 synthetic oil.
Figure 2-2. Lubricating Oil Recommendations
Breather Closed Open Closed Open Closed Open
Exhaust Flow at
Rated Output 60 Hz 165 cfm 203 cfm 180 cfm 237 cfm 300 cfm 420 cfm 300 cfm 420 cfm 414 cfm 494 cfm
Exhaust Temperature at Rated
Output 900° F 1100° F 1000° F 1130° F 1075° F 1100° F 1075° F 1100° F 1025° F 1050° F
Electrical System
Battery Charge
Alternator
12V,
30 Amp
12V,
15 Amp
12V,
30 Amp
12V,
15 Amp 12V, 30 Amp
Recommended Battery Group 26 Group 24F Group 26
Static Battery Charger 2.5 Amp
Governor System
Type Electronic
Frequency Regulation Isochronous
Steady State
Regulation +/- 0.25%
Voltage Regulator
Type Electronic
Sensing Phase Single
Regulation +/- 1%
Fuel System
Operating Pressure 5-14” WC
Model 22 kW 25 kW 27 kW 30 kW 32 kW 36 kW 38 kW 45 kW 48 kW 60 kW
Engine 2.4L 1.5L 2.4L 1.5L 2.4L 2.4L 2.4L 2.4L 5.4L 2.4L
- 20
- 4
5W-30
5W-30 w/ Block Heater
- 40
- 40
- 30
- 22
- 10
14
0
32
10
50
20
68
30
86
40
104
50
122
- 20
- 4
- 40
- 40
- 30
- 22
- 10
14
0
32
10
50
20
68
30
86
40
104
50
122
All Seasons
Arctic Conditions
º C
º F
º C
º F

Specifications
8Owner’s Manual for Stationary Emergency Generators
2.4 — Weather and Maintenance Kits
To keep the generator running at its peak, the following kits are offered:
•Cold Weather Kit
– Recommended for climates with temperatures below 32°F
•Extreme Cold Weather Kit
– Recommended Block Heater Kit for protection in temperatures below 32°F
•Scheduled Maintenance Kit
– Kit includes the recommended parts to maintain the generator. Refer to the Service Schedule for regular main-
tenance intervals.
For additional information, or to order any of these kits, please contact an Independent Authorized Service Dealer or
Customer Service Representative.
2.5 — Coolant Water Treatment
Use of improper coolants can damage the engine cooling system. Use demineralized water or distilled water for best
results. Hard water causes scale deposits, which reduces cooling efficiency and raises internal temperatures, possibly
leading to engine damage. Use an anti-corrosive to prevent rot in summer and anti-freeze to prevent freezing in winter.
Dilute the anti-freeze based on a theoretical temperature that is 9-18°F (5-10°C) below the lowest temperature
expected in the area. A ratio of 40-60% is most common range.
NOTE: Use only Peak Fleet-Charge® 50/50 ethylene glycol type coolant (available from any authorized
dealer).
Do not use propylene glycol type coolant. Using the wrong coolant, mixing different types of coolant,
or even mixing different brands of the correct type of coolant, can produce unsatisfactory results, pos-
sibly leading to engine damage.
2.6 — Fuel Requirements
The Stationary Emergency Generator may be equipped with one of the following fuel systems:
•Natural Gas Fuel System
•Propane Vapor (LPV) fuel system
Recommended fuels must have a BTU content of at least 1,000 BTUs per cubic foot (37.26 megajoules per cubic
meter) for NG, or at least 2,520 BTUs per cubic foot (93.8 megajoules per cubic meter) for LPV. If converting to LPV
from NG, a minimum LP tank size of 250 gallons (946 liters) is recommended. See the Installation Manual for complete
details and procedures.
Freezing Point °F (°C) -13 (-25) -31 (-35) -58 (-50)
Coolant (% Volume) 40 50 60
Water (% Volume) 60 50 40
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Specifications
Owner’s Manual for Stationary Emergency Generators 9
2.7 — Reconfiguring the Fuel System
While some models are created fuel specific for either Natural gas (NG) or Liquid Propane vapor (LPV) and are not fuel
convertible, others are configured at the factory for NG, but are field convertible to LPV. Units fitted with a dual fuel car-
buretion system are generally configured for the selected fuel source during installation.
To reconfigure the fuel system, change the jet in the demand regulator, and then navigate to the appropriate menu to
assign the new fuel type. Before proceeding, be aware that the fuel conversion software is password protected.
NOTE: Generac recommends that fuel conversion be done by an authorized dealer or a qualified, competent
installation contractor or electrician who is familiar with applicable codes, standards and regulations.
2.7.1— Fuel Conversion Procedure from NG to LPV
1. Turn off the main gas supply.
2. Remove battery negative cable (black) from battery negative (-) terminal.
3. Remove carburetor fuel hose from outlet port. See Figure 2-3.
4. Remove screw at front of power wire connector and pull connector from fuel solenoid.
5. Expand spring clamp on fuel enrichment hose and remove from hose barb.
NOTE: On 5.4L (48 kW) units, remove two screws (with flat washers, lock washers and hex nuts) to release fuel
inlet flange from frame rail. This will provide adequate access to the regulator for jet conversion.
6. Remove black pipe assembly from outlet port. If clearance is not sufficient, first remove fuel solenoid assembly.
7. Rotate NG fuel jet counterclockwise to remove
from the outlet port.
NOTE: Both the NG and LP fuel jets are slotted, so
that they may be removed and installed using an
ordinary flat blade screwdriver.
8. Rotate LP fuel jet counterclockwise to remove
from the jet keeper port.
NOTE: The orifice size is stamped on each jet. The
jet with the larger orifice is used for running on NG.
9. Rotate LP fuel jet clockwise to install in the outlet
port.
10. Rotate NG fuel jet clockwise to install in the jet
keeper port.
11. Install fuel solenoid assembly, if removed.
NOTE: Solenoid must be installed with flow arrow
pointed toward black pipe assembly. See inset of
Figure 2-3.
12. Apply appropriate pipe sealant to threads of black
pipe assembly and install into outlet port.
NOTE: On 5.4L (48 kW) units, install two screws
(with flat washers, lock washers and hex nuts) to
fasten fuel inlet flange to frame rail.
13. Expand spring clamp on fuel enrichment hose
and install onto hose barb.
14. Push power wire connector onto fuel solenoid and
install screw.
15. Install carburetor fuel hose onto outlet port.
16. Install battery negative cable (black) onto battery
negative (-) terminal.
17. Turn on the main gas supply.
18. See Subsection 2.7.2—Change Fuel Selection.
Figure 2-3. Demand Regulator Assembly
Spring
Carburetor
Connector
Fuel
Black
Fuel Jet
Outlet Port
Jet Keeper
Screw
Fuel Hose
Solenoid Body
Enrichment
Hose
Clamp
Pipe
Assembly
Port

Specifications
10 Owner’s Manual for Stationary Emergency Generators
Serious injury, including death, or damage will occur if not configured properly. Consult an Authorized
Dealer with any questions.
2.7.2— Change Fuel Selection
Failure to convert both the hardware and software will result in decreased performance and an increase in
emissions, which is a violation of Environmental Protection Agency (EPA) regulations. It is the responsibility
of the installer to make sure that only the correct recommended fuel is supplied to the generator fuel system.
Thereafter, the owner/operator must ensure that only the proper fuel is supplied.
1. Once fuel regulator is converted to desired fuel type call 888-9ACTIVATE for the control panel password. This
fuel selection conversion is required to be password protected by EPA regulations.
2. Access the control panel located behind the viewing window at the rear of the unit.
3. From the Home screen, press ESCAPE to display the Main Menu.
4. Navigate the software using UP ARROW, DOWN ARROW, ENTER and ESCAPE. For more detailed informa-
tion, see Subsection 4.3 —Menu Navigation.
2.8 — Battery Requirements
2.8.1— Battery Charger
A 2.5 amp battery charger is integrated into the control panel module. It operates as a “Smart Charger” which ensures
output charging levels are safe and continuously optimized to promote maximum battery life.
2.9 — Corrosion Protection
Periodically wash and wax the enclosure using automotive type products. Frequent washing is recommended in salt
water/coastal areas.
Group 26, 12 Volt 1.5L, 2.4L Engines: For areas where temperatures regularly drop below 32° F (0° C).
NOTE: Battery dimensions (L x W x H) for Group 26 battery must not exceed 8-3/16" x 6-13/16" x 7-3/4"
(208mm x 173mm x 197mm).
Group 24F, 12 Volt 5.4L Engine: For areas where temperatures regularly drop below 32° F (0° C).
NOTE: Battery dimensions (L x W x H) for Group 24F battery must not exceed 10-3/4" x 6-13/16" x 9"
(273mm x 173mm x 229mm).
*

Owner’s Manual for Stationary Emergency Generators 11
Section 3 Activation and Startup
3.1 — Orientation
NOTE: The 2.4L (32 kW) unit is depicted in the artwork used in this manual. The location and appearance of
some components may vary between engine models.
The side of the enclosure with the viewing window is identified as the rear of the generator set. The right and left sides
are identified by standing at the rear and looking towards the front of the unit.
Figure 3-1. Enclosure (Rear Left View)
3.2 — Remove Side Access Panels
NOTE: Access panels are located at both the left and right sides of the enclosure.
1. Remove key from bag attached to door of unit.
2. Insert key into latch and rotate counterclockwise 1/2 turn. See Figure 3-2.
3. Raise panel using thumb latch.
Figure 3-2. Access Panel Key
Viewing
Window
Battery
Key
Thumb Latch

Activation and Startup
12 Owner’s Manual for Stationary Emergency Generators
3.3 — Install Battery
CAUTION: Always connect the positive battery
cable first. If the positive cable should contact
ground with the negative cable installed, the result-
ing sparks may cause a battery explosion which
could result in serious injury.
1. Loosen two screws with nylon washers to release hold-
down clamp from battery tray.
2. Install battery onto tray.
3. Install two screws with nylon washers to secure hold-
down clamp to battery tray.
4. Install battery positive cable (red) to battery positive (+)
terminal.
5. Install battery negative cable (black) to battery negative
(-) terminal.
3.4 — Open Viewing Window
1. Remove plastic film from both sides of viewing window.
2. Rotate viewing window upward to access control panel.
3. To hold viewing window in the open position, remove rod
from clip at back of window and insert into hole in frame.
See Figure 3-4.
$
Figure 3-3. Battery Cable Connections
Battery
Red Lead
From Starter
Black Lead
To Frame
Figure 3-4. Viewing Window

Activation and Startup
Owner’s Manual for Stationary Emergency Generators 13
3.5 — Activate Unit
Display Reads: Generator Active is displayed on the
LCD screen when the unit is first
powered up. After displaying firmware
and hardware version codes, as well as
other system information, the Installation
Wizard is launched, and the Language
screen is displayed.
Use UP ARROW or DOWN ARROW to
scroll to desired language.
Press ENTER.
If the wrong language is selected, it may be changed
later using the Edit menu.
Display Reads: Press ENTER. Press ESCAPE to abort the activation sequence. NOT
ACTIVATED is displayed and the generator will run in
manual mode only. Disconnect and reconnect the
negative battery cable to restart the activation routine.
If power is removed after a successful activation, no
data is lost, but the time and date must be updated.
Display Reads: Go to www.activategen.com or call 1-
888-9ACTIVATE (922-8482, US & Can-
ada only) if activation passcode is not
available.
If activation pass code is available, wait a
few seconds for the next display.
Display Reads: Use UP ARROW or DOWN ARROW to
increment or decrement the digit to
correspond to the first number of the
pass code.
Press ENTER.
Repeat step to enter remaining digits.
Press ESCAPE to return to preceding digits if a
correction becomes necessary.
If attempts to enter the activation code are
unsuccessful, check the number against the code
given on activategen.com. If it is correct, contact 1-888-
9ACTIVATE (922-8482, US & Canada only).
Display Reads: Use UP ARROW or DOWN ARROW to
increment or decrement the hour. Press
ENTER.
Use UP ARROW or DOWN ARROW to
increment or decrement the minute.
Press ENTER.
Use UP ARROW or DOWN ARROW to
select the month. Press ENTER.
Use UP ARROW or DOWN ARROW to
increment or decrement the date. Press
ENTER.
Use UP ARROW or DOWN ARROW to
increment or decrement the year. Press
ENTER.
Language
- English +
Up Arrow = (+)
Down Arrow = (-)
Activate me (ENT) or
ESC to run in manual
To Activate go to
www.activategen.com
SN 1234567890
PASS CODE XXXXX
Select Hour (0-23)
- 6 +

Activation and Startup
14 Owner’s Manual for Stationary Emergency Generators
3.6 — Start and Run Engine
1. Pull up rubber flap covering fuse holder and verify installation of 7.5 amp fuse. See A of Figure 3-5.
2. Move the Main Circuit Breaker switch down to the OFF (Open) position. See B of Figure 3-5.
3. Press MANUAL on the control panel to start the engine. A blue LED illuminates to confirm that the system is in
the MANUAL mode. See C of Figure 3-5.
4. Allow the engine to run until it reaches normal operating temperature.
5. Press OFF on the control panel to stop the engine. A red LED illuminates to confirm that the system is in the OFF
mode.
Figure 3-5. Generator Control Panel
Display Reads: Use UP ARROW or DOWN ARROW to
select either Yes or No.
Press ENTER.
Select YES to perform exercise at low speed. Select
NO to perform exercise at normal operating speed.
Display Reads: Set Exercise Time.
Use UP ARROW or DOWN ARROW to
increment or decrement the hour. Press
ENTER.
Use UP ARROW or DOWN ARROW to
increment or decrement the minute.
Press ENTER.
Use UP ARROW or DOWN ARROW to
scroll to the day of the week. Press
ENTER.
In the AUTO mode, the engine starts and runs once
each week at the time and day specified. During the
exercise cycle, the unit runs approximately 12 minutes
and then shuts down. Transfer of loads to the generator
does not occur unless utility power fails.
Quiet Test Mode?
Yes No
Select Hour (0-23)
- 1 +
o
OFF
PUSH TO TRIP
7.5 Amp Fuse
and USB Port
Main Circuit Breaker
C
BA
LCD Screen
Control Panel