Generac Power Systems 15 kW EcoGen User manual

Owner’s Manual
60 Hz Air-Cooled Generators
15 kW EcoGen™
SAVE THIS MANUAL FOR FUTURE REFERENCE
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
Register your Generac product at:
WWW.GENERAC.COM
1-888-GENERAC
(888-436-3722)
(000209b)
WARNING
Loss of life. This product is not intended to
be used in a critical life support application.
Failure to adhere to this warning could result
in death or serious injury.
®

ii Owner’s Manual for 60 Hz EcoGen™ Generators
Use this page to record important information about this generator set.
Record the information found on the unit data label on this
page. See General Information for the location of the unit
data label. The unit has a label plate affixed to the inside
partition, to the left of the control panel console as shown in
Figure 2-1. See Operation for directions on how to open the
top lid and remove the front panel.
Always supply the complete model and serial numbers of the
unit when contacting an Independent Authorized Service
Dealer (IASD) about parts and service.
Operation and Maintenance: Correct maintenance and
care of the unit ensures a minimum number of problems, and
keeps operating expenses at a minimum. It is the operator’s
responsibility to perform all safety inspections, to verify all
maintenance for safe operation is performed promptly, and
to have the equipment inspected periodically by an IASD.
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, Generac
recommends contacting an IASD for assistance. Authorized
service technicians are factory-trained and are capable of
handling all service needs. To locate the nearest IASD,
please visit the dealer locator at:
www.generac.com/Dealer-Locator.
Model:
Serial:
Production Date:
Volts:
LPV Amps:
NG Amps:
Hz:
Phase:
Controller P/N:
STA MAC ID:
SSID:
(000393a)
WARNING
CANCER AND REPRODUCTIVE HARM
www.P65Warnings.ca.gov.

Owner’s Manual for 60 Hz EcoGen™ Generators iii
Section 1: Safety Information
Introduction ..........................................................1
Read This Manual Thoroughly ....................................1
Safety Rules .........................................................1
How to Obtain Service .................................................2
General Hazards ..................................................2
Exhaust Hazards ..................................................3
Electrical Hazards ................................................3
Fire Hazards .........................................................3
Explosion Hazards ...............................................4
Battery Hazards ...................................................4
Section 2: General Information
EcoGen Theory of Operation ..............................7
The Generator ......................................................8
Data Decals ..........................................................9
Specifications ....................................................10
Generator ..................................................................10
Engine .......................................................................10
Protection Systems ...........................................11
Emissions ...........................................................11
Fuel Requirements ............................................11
Battery Requirements .......................................11
Engine Oil Requirements ..................................11
Activating the Generator ...................................11
Wi-Fi Module ......................................................11
Replacement Parts ............................................12
Accessories ........................................................12
Section 3: Operation
Site Prep Verification .........................................13
Generator Enclosure .........................................13
Opening the Lid .........................................................13
Front Access Panel Removal ....................................13
Intake Side Panel Removal .......................................14
Main Line Circuit Breaker
(Generator Disconnect) .....................................14
LED Indicator Lights ..........................................14
Auxiliary Shutdown Switch ...............................15
Control Panel Interface ..................................... 15
Using the AUTO/OFF/MANUAL Buttons ......... 15
Operating Modes ............................................... 16
Interface Menu Displays ................................... 16
LCD Panel .................................................................16
Menu System Navigation ..........................................17
Setting the Exercise Timer ............................... 19
Battery Charger ................................................. 19
Two-Wire Start Signal and Off-Grid Mode
Enabled .............................................................. 19
Manual Transfer Operation
(if equipped) ....................................................... 20
Transfer to Generator Power Source ........................20
Transfer to Utility Power Source ................................20
Automatic Transfer Operation ......................... 20
Automatic Sequence of Operation .................. 20
Utility Failure (if equipped with Transfer Switch
and Off-Grid Mode Disabled) ....................................20
Cranking ....................................................................21
Cold Smart Start ........................................................21
Load Transfer ............................................................21
Shutting Generator Down While Under
Load or During a Utility Outage ....................... 21
Section 4: Maintenance
Maintenance ....................................................... 23
Preparing for Maintenance ............................... 23
Performing Scheduled Maintenance ............... 23
Service Schedule ............................................... 24
Maintenance Log ............................................... 24
Checking Engine Oil Level ............................... 25
Engine Oil Requirements ..........................................25
Changing Oil and Oil Filter ............................... 26
Oil System Drain Pump Kit Parts List ........................26
Assembling Oil System Drain Pump .........................26
EcoGen Oil Change Procedure .................................27
Replacing Engine Air Filter .............................. 28
Spark Plugs ........................................................ 28
Valve Clearance Adjustment ............................ 29
Checking Valve Clearance ........................................29
Adjust Valve Clearance .............................................29
Table of Contents

Table of Contents
iv Owner’s Manual for 60 Hz EcoGen™ Generators
Battery Maintenance ..........................................29
Inspecting the Battery ............................................... 30
Cleaning the Sediment Trap .............................31
Post Maintenance Checks ................................31
Performing Fuel System Leak Test ........................... 31
Attention After Submersion ..............................32
Corrosion Protection .........................................32
Remove From, and Return To Service
Procedure ...........................................................32
Remove From Service .............................................. 32
Return to Service ...................................................... 32
Section 5: Troubleshooting / Quick
Reference Guide
Generator Troubleshooting ..............................33
Quick Reference Guide .....................................35

Safety Information
Owner’s Manual for 60 Hz EcoGen™ Generators 1
Section 1: Safety Information
Introduction
Thank you for purchasing this compact, high perfor-
mance, air-cooled, engine-driven generator. In off-grid
applications as part of an alternative energy system, the
generator starts when the inverter or battery charger
detects the normal power source voltage has dropped
below a preset level. The generator powers the inverter
and, once battery voltage rises to an acceptable level,
the generator shuts down. Another off-grid application
may be for use in remote locations where the generator
powers a water pump for a village, campground, or live-
stock.
This unit is factory installed in an all-weather, metal
enclosure intended exclusively for outdoor installation.
This generator will operate using either vapor withdrawn
liquid propane (LP) or natural gas (NG).
NOTE: When sized correctly, this generator is suitable
for supplying typical residential loads such as induction
motors (sump pumps, refrigerators, air conditioners, fur-
naces, etc.), electronic components (computer, monitor,
TV, etc.), lighting loads, and microwaves. This unit is also
equipped with a Wi-Fi®module, which allows the genera-
tor owner to monitor generator status from anywhere
they have Internet access.
NOTE: Wi-Fi®is a registered trademark of Wi-Fi Alli-
ance®.
The information in this manual is accurate based on
products produced at the time of publication. The manu-
facturer reserves the right to make technical updates,
corrections, and product revisions at any time without
notice.
Read This Manual Thoroughly
If any section of this manual is not understood, contact
the nearest Independent Authorized Service Dealer
(IASD) or Generac Customer Service at 1-888-436-3722
(1-888-GENERAC), or visit www.generac.com for start-
ing, operating, and servicing procedures. The owner is
responsible for correct maintenance and safe use of the
unit.
This manual must be used in conjunction with all other
supporting product documentation supplied with the
product.
SAVE THESE INSTRUCTIONS for future reference. This
manual contains important instructions that must be fol-
lowed during placement, operation, and maintenance of
the unit and its components. Always supply this manual
to any individual that will use this unit, and instruct them
on how to correctly start, operate, and stop the unit in
case of emergency.
Safety Rules
The manufacturer cannot anticipate every possible cir-
cumstance that might involve a hazard. The alerts 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 that the manufacturer does not spe-
cifically recommend, verify that it is safe for others and
does not render the equipment unsafe.
Throughout this publication, 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 that may be haz-
ardous if performed incorrectly or carelessly. Observe
them carefully. Alert definitions are as follows:
NOTE: Notes contain additional information important to
a procedure and will be found within the regular text of
this manual.
These safety alerts cannot eliminate the hazards that
they indicate. Common sense and strict compliance with
the special instructions while performing the action or
service are essential to preventing accidents.
(000100a)
Consult Manual. Read and understand manual
completely before using product. Failure to
completely understand manual and product
could result in death or serious injury.
WARNING
(000001)
DANGER
Indicates a hazardous situation which, if not avoided,
will result in death or serious injury.
(000002)
WARNING
Indicates a hazardous situation which, if not avoided,
could result in death or serious injury.
(000003)
CAUTION
Indicates a hazardous situation which, if not avoided,
could result in minor or moderate injury.

Safety Information
2Owner’s Manual for 60 Hz EcoGen™ Generators
How to Obtain Service
Contact an IASD for assistance when the generator requires
servicing or repa
irs. Service technicians are factory-
trained and are capable of handling all service needs.
Please visit the dealer locator at: www.generac.com/
Service/DealerLocator/ to locate the nearest IASD.
When contacting a dealer about parts and service,
always supply the complete model and serial numbers of
the unit as given on its data plate (decal), which is
located on the generator. See Figure 2-1 for decal loca-
tion. Record the model and serial numbers in the spaces
provided on the inside front cover of this manual.
General Hazards
(000190)
DANGER
Loss of life. Property damage. Installation must
always comply with applicable codes, standards, laws
and regulations. Failure to do so will result in death
or serious injury.
(000191)
DANGER
Automatic start-up. Disconnect utility power and
render unit inoperable before working on unit.
Failure to do so will result in death or serious injury.
(000209b)
WARNING
Loss of life. This product is not intended to
be used in a critical life support application.
Failure to adhere to this warning could result
in death or serious injury.
(000247a)
Equipment damage. This unit is not intended for use as a prime
power source. It is intended for use as an intermediate power
supply in the event of temporary power outage only. Doing so
could result in death, serious injury, and equipment damage.
WARNING
(000130)
Accidental Start-up. Disconnect the negative battery
cable, then the positive battery cable when working
on unit. Failure to do so could result in death
or serious injury.
WARNING
(000182a)
WARNING
Equipment damage. Only qualified service personnel may
install, operate, and maintain this equipment. Failure to
follow proper installation requirements could result in death,
serious injury, and equipment or property damage.
(000187)
WARNING
Electrocution. Potentially lethal voltages are generated
by this equipment. Render the equipment safe before
attempting repairs or maintenance. Failure to do so
could result in death or serious injury.
(000155a)
WARNING
Electric shock. Only a trained and licensed electrician
should perform wiring and connections to unit. Failure to
follow proper installation requirements could result in death,
serious injury, and equipment or property damage.
(000115)
Moving Parts. Do not wear jewelry when
starting or operating this product. Wearing
jewelry while starting or operating this product
could result in death or serious injury.
WARNING
(000111)
WARNING
Moving Parts. Keep clothing, hair, and
appendages away from moving parts. Failure
to do so could result in death or serious injury.
(000108)
WARNING
Hot Surfaces. When operating machine, do not
touch hot surfaces. Keep machine away from
combustibles during use. Hot surfaces could
result in severe burns or fire.
(000146)
WARNING
Equipment and property damage. Do not alter
construction of, installation, or block ventilation for
generator. Failure to do so could result in unsafe
operation or damage to the generator.
Risk of injury. Do not operate or service this machine
if not fully alert. Fatigue can impair the ability to
operate or service this equipment and could result in
death or serious injury. (000215a)
WARNING
WARNING
(000228)
Environmental Hazard. Always recycle batteries at an
official recycling center in accordance with all local
laws and regulations. Failure to do so could result in
environmental damage, death, or serious injury.

Safety Information
Owner’s Manual for 60 Hz EcoGen™ Generators 3
• Inspect the generator regularly, and contact the
nearest IASD for parts needing repair or replacement.
Exhaust Hazards
•The generator must be installed and operated
outdoors only.
Electrical Hazards Fire Hazards
(000216)
WARNING
Injury and equipment damage. Do not use generator
as a step. Doing so could result in falling, damaged
parts, unsafe equipment operation, and could result
in death or serious injury.
(000103)
Asphyxiation. Running engines produce carbon
monoxide, a colorless, odorless, poisonous
gas. Carbon monoxide, if not avoided, will
result in death or serious injury.
DANGER
(000178a)
WARNING
Asphyxiation. Always use a battery operated carbon
monoxide alarm indoors and installed according to
the manufacturer’s instructions. Failure to do so
could result in death or serious injury.
(000146)
WARNING
Equipment and property damage. Do not alter
construction of, installation, or block ventilation for
generator. Failure to do so could result in unsafe
operation or damage to the generator.
WARNING
(000281)
Fire risk. Fuel and vapors are extremely
flammable. Do not operate indoors. Doing
so could result in death, serious injury, or
property or equipment damage.
(000144)
DANGER
Electrocution. Contact with bare wires,
terminals, and connections while generator
is running will result in death or serious injury.
(000150)
Electrocution. Never connect this unit to the electrical
system of any building unless a licensed electrician
has installed an approved transfer switch. Failure to
do so will result in death or serious injury.
DANGER
(000237)
DANGER
Electrical backfeed. Use only approved switchgear to
isolate generator from the normal power source.
Failure to do so will result in death, serious injury,
and equipment damage.
(000152)
DANGER
Electrocution. Verify electrical system is
properly grounded before applying power.
Failure to do so will result in death or serious
injury.
(000188)
DANGER
Electrocution. Do not wear jewelry while
working on this equipment. Doing so will
result in death or serious injury.
(000104)
DANGER
Electrocution. Water contact with a power
source, if not avoided, will result in death
or serious injury.
(000145)
DANGER
Electrocution. In the event of electrical accident,
immediately shut power OFF. Use non-conductive
implements to free victim from live conductor. Apply
first aid and get medical help. Failure to do so will
result in death or serious injury.
WARNING
(000217)
Fire hazard. Do not obstruct cooling and ventilating
airflow around the generator. Inadequate ventilation
could result in fire hazard, possible equipment
damage, death or serious injury.

Safety Information
4Owner’s Manual for 60 Hz EcoGen™ Generators
Comply with regulations the Occupational Safety and
Health Administration (OSHA) has established, or with
equivalent standards. Also, verify that the unit is applied,
used, and maintained in accordance with the manufac-
turer's instructions and recommendations. Do nothing
that might alter safe application/usage and render the
unit in noncompliance with the aforementioned codes,
standards, laws, and regulations.
Explosion Hazards
Battery Hazards
WARNING
(000218)
Fire and explosion. Installation must comply with all
local, state, and national electrical building codes.
Noncompliance could result in unsafe operation,
equipment damage, death, or serious injury.
(000100a)
Consult Manual. Read and understand manual
completely before using product. Failure to
completely understand manual and product
could result in death or serious injury.
WARNING
WARNING
Electrocution. Refer to local codes and standards for
safety equipment required when working with a live
electrical system. Failure to use required safety
equipment could result in death or serious injury.
(000257)
(000147)
WARNING
Risk of Fire. Unit must be positioned in a
manner that prevents combustible material
accumulation underneath. Failure to do so
could result in death or serious injury.
(000192)
DANGER
Explosion and fire. Fuel and vapors are extremely
flammable and explosive. No leakage of fuel is
permitted. Keep fire and spark away. Failure to do
so will result in death or serious injury.
(000151a)
DANGER
Explosion and fire. Connection of fuel source must be
completed by a qualified professional technician or contractor.
Incorrect installation of this unit will result in death, serious
injury, and property and equipment damage.
(000174)
DANGER
Risk of fire. Allow fuel spills to completely dry
before starting engine. Failure to do so will
result in death or serious injury.
(000110)
WARNING
Risk of Fire. Hot surfaces could ignite
combustibles, resulting in fire. Fire could
result in death or serious injury.
(000188)
DANGER
Electrocution. Do not wear jewelry while
working on this equipment. Doing so will
result in death or serious injury.
(000162)
Explosion. Do not dispose of batteries in a fire.
Batteries are explosive. Electrolyte solution can cause
burns and blindness. If electrolyte contacts skin or eyes,
flush with water and seek immediate medical attention.
WARNING
(000137a)
WARNING
Explosion. Batteries emit explosive gases while
charging. Keep fire and spark away. Wear protective
gear when working with batteries. Failure to do so
could result in death or serious injury.
(000164)
WARNING
Electrical shock. Disconnect battery ground
terminal before working on battery or battery
wires. Failure to do so could result in death
or serious injury.
(000138a)
WARNING
Risk of burns. Batteries contain sulfuric acid and can
cause severe chemical burns. Wear protective gear
when working with batteries. Failure to do so could
result in death or serious injury.

Safety Information
Owner’s Manual for 60 Hz EcoGen™ Generators 5
Always recycle batteries in accordance with local laws
and regulations. Contact your local solid waste collection
site or recycling facility to obtain information on local
recycling processes. For more information on battery
recycling, visit the Battery Council International website
at: http://batterycouncil.org.
(000163a)
Risk of burn. Do not open or mutilate batteries.
Batteries contain electrolyte solution which can cause
burns and blindness. If electrolyte contacts skin or
eyes, flush with water and seek immediate medical
attention.
WARNING
WARNING
(000228)
Environmental Hazard. Always recycle batteries at an
official recycling center in accordance with all local
laws and regulations. Failure to do so could result in
environmental damage, death, or serious injury.

Safety Information
6Owner’s Manual for 60 Hz EcoGen™ Generators
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General Information
Owner’s Manual for 60 Hz EcoGen™ Generators 7
Section 2: General Information
EcoGen Theory of Operation
In an off-grid solution, the generator is an important
source of backup power when other resources are insuf-
ficient for the demand, improving overall system reliabil-
ity.
1. Solar cells and/or wind turbines generate DC cur-
rent.
2. DC current is fed to the inverter charger and then
to the battery bank.
3. The inverter takes DC power from the battery bank,
converts it to AC, and then sends the current to the
AC electrical panel.
4. If there is no solar or wind gain and the battery
bank level drops below a preset threshold, the
inverter automatically signals the generator to start.
5. The generator feeds AC power to the inverter,
which in turn sends power to the electric panel and
recharges the battery bank to an acceptable level.

General Information
8Owner’s Manual for 60 Hz EcoGen™ Generators
The Generator
Figure 2-1. Components and Control Locations
A. Main line circuit breaker
(generator disconnect)
F. Battery compartment
(battery not supplied)
K. Lock with cover O. Sediment trap
B. Airbox with air cleaner G. Composite base L. Oil filter P. Fuel regulator
C. Control panel H. Exhaust enclosure M. Oil tank Q. Fuel inlet
D. Auxiliary shutdown
switch
J. Status LED indicators N. Oil fill cap/oil dipstick R. Wi-Fi module
E. Data decal location
K
B
A
C
K
J
M
N
G
O
P
Q
F
L
D
E
R
D
H

General Information
Owner’s Manual for 60 Hz EcoGen™ Generators 9
Data Decals
Two decals on the generator provide information about the unit itself and required fuel inlet pressure for correct opera-
tion.
Model Data Decal
Includes important information about the unit
including:
• model number
• serial number
• production date
•voltage
• frequency
•amps
• country of origin
• rated ambient temperature.
The model data decal also includes applica-
ble certification symbols from independent
testing agencies.
Fuel Inlet Pressure
Displays unit serial number, along with mini-
mum and maximum inlet pressures for natu-
ral gas (NG) and liquid propane (LP) supply.
Space is provided for the installer to enter
maximum flow rates based on installed pipe
sizes and lengths.

General Information
10 Owner’s Manual for 60 Hz EcoGen™ Generators
Specifications
Generator
Engine
A detailed specification sheet for the particular generator is available from an IASD.
Model 15 kW EcoGen
Rated voltage 240
Rated maximum load current (amps) at rated
voltage with LP* 62.5
Main line circuit breaker (generator disconnect) 70 Amp
Phase 1
Rated AC frequency 60 Hz
Battery requirement
(field supplied)
12 volts, Group 26R-540CCA Minimum
or Group 35AGM-650CCA Minimum
(see Replacement Parts)
Enclosure Aluminum
Weight (lb/kg) (without battery) 460 (209)
Normal operating range
This unit is tested in accordance to UL 2200 standards with an operat-
ing temperature of -20 °F (-29 °C) to 122 °F (50 °C). When operated
above 77 °F (25 °C) there may be a decrease in engine power. See
Specifications .
These generators are rated in accordance with UL 2200, Safety Standard for Stationary Engine Generator Assemblies, and CSA-C22.2 No. 100-04
Standard for Motors and Generators.
* Natural gas ratings will depend on specific fuel joules/BTU content. Typical derates are between 10-20% off the LP gas rating.
Model 15 kW EcoGen
Engine type G-Force™ 1000 Series
Number of cylinders 2
Displacement 999 cc
Valve clearance 0.002–0.004 in (0.05–0.1 mm)
Cylinder block Aluminum with cast iron sleeve
Recommended spark plug 0G0767A (RC12YC or equivalent)
Spark plug gap 0.040 in (1.02 mm)
Starter 12 VDC
Oil capacity including filter Approximately 3.75 qt (3.55 L)
Recommended oil filter Part #070185E
Recommended air filter Part #0J8478
Engine power is subject to and limited by such factors as fuel BTU/joules, ambient temperature, and altitude. Engine power decreases approximately
3.5% for each 1000 ft (304.8 m) above sea level, and will also decrease about 1% for each 10 °F (6 °C) above 60 °F (15 °C) ambient temperature.

General Information
Owner’s Manual for 60 Hz EcoGen™ Generators 11
Protection Systems
The generator may need to run for long periods of time
with no operator present to monitor engine or generator
conditions. The generator is equipped with protection
systems to automatically shut down the unit to protect
against potentially damaging conditions. Some of these
systems include:
Alarms:
Warnings:
The control panel contains a display alerting the operator
when a fault condition occurs. The above list is not all-
inclusive. See Operation for more information about
alarms and control panel operation.
NOTE: A warning indicates a condition on the generator
which should be addressed, but will not shut down the
generator. An alarm shuts down the generator to protect
the system from any damage. In the event of an alarm,
an owner can clear the alarm and restart the generator
prior to contacting an IASD. Contact an IASD if the inter-
mittent issue occurs again.
Emissions
The United States Environmental Protection Agency (US
EPA) (and California Air Resources Board (CARB), for
engines/equipment certified to California standards)
requires this engine/equipment to comply with exhaust
and evaporative emissions standards. Locate the emis-
sions compliance decal on the engine to determine appli-
cable standards. See the included emissions warranty for
emissions warranty information. Follow the maintenance
specifications in this manual to ensure the engine com-
plies with applicable emissions standards for the duration
of the product’s life.
This generator is certified to operate on liquid propane
vapor fuel or pipeline natural gas.
The Emission Control System code is EM (Engine Modifi-
cation). The Emission Control System on this generator
consists of the following:
:
Fuel Requirements
The engine has been fitted with a dual fuel carburetion
system. The unit will run on NG or LP gas (vapor), but it
has been factory set to run on NG. The fuel system will
be configured for the available fuel source during installa-
tion.
Recommended fuels should have a BTU content of at
least 1000 BTUs per ft3(37.26 megajoules per m3) for
natural gas, or at least 2500 BTUs per ft3(93.15 mega-
joules per m3) for LP gas (vapor).
NOTE: If converting to LP gas from NG, a minimum LP
tank size of 250 gal (946 L) is recommended. See the
installation manual for complete procedures and details.
Battery Requirements
12 volts, Group 26R-540CCA minimum or Group
35AGM-650CCA minimum (not included with unit.) See
Maintenance for correct battery maintenance proce-
dures.
Engine Oil Requirements
See Engine Oil Requirements in the Maintenance sec-
tion for correct oil viscosity.
Activating the Generator
The generator should be activated upon initial start-up.
See installation manual for complete instructions.
Wi-Fi Module
The generator is equipped with a Wi-Fi module. See Wi-
Fi module owner’s manual for further instructions.
•High Temperature
•Low Oil Pressure
•Overcrank
•Overspeed
•Overvoltage
•Undervoltage
•Overload
•Underspeed
•RPM Sensor Loss
•Controller Fault
•Wiring Error
•Stepper Overcurrent
•Charger Warning
•Charger Missing AC
•Low Battery
•Battery Problem
•USB Warning
•Download Failure
System Components
Air Induction - Intake Manifold
- Air Cleaner
Fuel Metering - Carburetor and Mixer Assembly
- Fuel Regulator
Ignition - Spark Plug
- Ignition Module
Exhaust - Exhaust Manifold
- Muffler
(000105)
Explosion and Fire. Fuel and vapors are extremely
flammable and explosive. Add fuel in a well
ventilated area. Keep fire and spark away. Failure
to do so will result in death or serious injury.
DANGER

General Information
12 Owner’s Manual for 60 Hz EcoGen™ Generators
Replacement Parts
Accessories
NOTE: Performance enhancing accessories are available for air-cooled generators. Contact an IASD or visit
www.generac.com for additional information on replacement parts, accessories, and extended warranties. See also
http://www.ordertree.com/generac/air-cooled-homestandby-generators/.
Description 15 kW EcoGen
26R Exide battery 0H34215
Spark plug 0G0767A
(RC12YC or equivalent)
Oil filter 070185E
Air filter 0J8478
Control panel fuse 0D7178T
Rotor brushes 0J8415
Accessory Description
Cold Weather Accessories*—
•Battery Pad Warmer
•Oil Warmer
•Breather Warmer
* each sold separately.
•Recommended in areas where temperatures fall below 0 °F (-18 °C).
(Not necessary for use with AGM-style batteries)
•Recommended in areas where temperatures fall below 0 °F (-18 °C).
•Recommended in areas where heavy icing occurs.
NOTE: Battery heaters and oil heaters require N1 and N2 connections to 240V util-
ity. Breather heater requires T1 connection to 120V.
Scheduled Maintenance Kit Provides all items necessary to perform complete routine maintenance on a gener-
ator, along with oil recommendations (oil not included).
Touch-Up Paint Kit Very important to maintain the look and integrity of the generator enclosure. This kit
includes touch-up paint and instructions.
Wireless Local Monitor The Wireless Local Monitor is completely wireless and battery powered, and pro-
vides owners with instant generator status updates without ever leaving the house.
Status lights (red, yellow, and green) alert owners when the generator needs atten-
tion. Magnetic backing permits refrigerator mounting and gives a 600 ft (183 m) line
of sight communication.
Wi-Fi LP Fuel Level Monitor The Wi-Fi enabled LP fuel level monitor provides constant monitoring of the con-
nected LP fuel tank. Monitoring the LP tank level is an important step in making sure
your generator is ready to run during an unexpected power failure. Status alerts are
available through the Mobile Link™ application informing you when your LP tank
needs a refill.
Base Plug Kit Base plugs snap into the lifting holes on the base of air-cooled home standby gen-
erators. This offers a sleek, contoured appearance, as well as offers protection from
rodents and insects by covering the lifting holes located in the base. Base plug kit
contains four base plugs, sufficient for use on a single air-cooled home standby
generator.

Operation
Owner’s Manual for 60 Hz EcoGen™ Generators 13
Section 3: Operation
Site Prep Verification
Generator must be installed to allow unimpeded airflow
into and out of the generator.
Mechanical and gravity outdoor air intake openings for air
distribution and supply systems must be located not less
than 10 ft (3.05 m) horizontally from the generator enclo-
sure. See Section 401.4 in the ICC Mechanical Code for
additional information.
Verify all shrubs or tall grasses within 3 ft (0.91 m) of the
intake and discharge louvers on the sides of the enclo-
sure have been removed. Install generator on high
ground where water levels will not rise and endanger it.
This unit should not operate in or be subjected to stand-
ing water. Verify all potential water sources such as water
sprinklers, roof run-off, rain gutter downspouts, and sump
pump discharges are directed away from unit.
Generator Enclosure
Enclosure lid is locked prior to shipment. A set of keys is
attached to cardboard on top of generator. An additional
set of keys is attached to pallet bracket on the front intake
end of generator.
NOTE: Keys provided with this unit are intended for ser-
vice personnel use only.
Opening the Lid
1. Use keys to open generator lid.
2. See Figure 3-1. Two locks (A) secure lid; one on
each side. Open protective rubber cap to access
keyhole.
Figure 3-1. Opening the Lid
3. Press down on lid above side lock, and unlock
latch to correctly open lid.
4. Repeat for other side. Lid may appear stuck if pres-
sure is not applied from the top.
NOTE: Always verify side locks are unlocked before
attempting to lift lid.
Front Access Panel Removal
See Figure 3-2. Remove front access panel (A) by lifting
straight up and out once lid is open.
Figure 3-2. Remove Front Access Panel
(000191)
DANGER
Automatic start-up. Disconnect utility power and
render unit inoperable before working on unit.
Failure to do so will result in death or serious injury.
009209
A
A
009210
A
B
C
D

Operation
14 Owner’s Manual for 60 Hz EcoGen™ Generators
NOTE: Always lift front access panel straight up before
pulling away from enclosure (B and C). Do not pull panel
away from the enclosure before lifting up (D).
Intake Side Panel Removal
See Figure 3-3. Intake side panel (A) must be removed
to access battery compartment, fuel regulator, and sedi-
ment trap.
1. Raise lid and remove front panel.
2. Use a hex key to remove two mounting screws (B)
and L-bracket screw (C).
3. Lift intake panel up and away from generator.
NOTE: Always lift intake side panel straight up before
pulling away from enclosure. Do not pull panel away from
enclosure before lifting up (D).
Figure 3-3. Intake Side Panel Removal
Main Line Circuit Breaker (Generator
Disconnect)
See Figure 3-4. This is a 2-pole main line circuit breaker
(MLCB) (generator disconnect) (A) rated according to rel-
evant specifications.
The generator MLCB (generator disconnect) can be
locked in OFF (OPEN) for security. Use an appropriately-
sized padlock (not included) with a shackle long enough
to pass through both lock tabs (B).
Figure 3-4. Generator MLCB (Generator Disconnect)
NOTE: DO NOT lock out the generator MLCB (generator
disconnect) during normal generator operation. Doing so
will compromise automatic standby functionality.
LED Indicator Lights
See Figure 3-5. Three LEDs are visible behind a translu-
cent lens on the generator side panel. These LEDs indi-
cate generator operating status.
Figure 3-5. LED Indicator Lights
•Green LED “Ready” light (A) is illuminated when
utility is present and control panel is in AUTO. LED
flashes when automatic transfer switch converts to
generator power during a utility power outage.
•Red LED “Alarm” light (B) is illuminated when gen-
erator is OFF or a fault is detected. Contact an
IASD.
•Yellow LED “Non-Critical Alert” light (C) is illumi-
nated when maintenance is required.
NOTE: Yellow LED may be illuminated at the same time
as either the red or green LED.
002961
D
B
A
C
001810
001810
BA
B
001791
001791
A
C
B

Operation
Owner’s Manual for 60 Hz EcoGen™ Generators 15
Auxiliary Shutdown Switch
All generators are equipped with an external means of
shutting down the generator which complies with the latest
NEC code requirement. The primary generator shutdown
sequence is described in
Shutting Generator Down
While Under Load or During a Utility Outage
.
See Figure 3-6. There is an auxiliary shutdown switch
(A) on the exterior of the generator back panel. This aux-
iliary shutdown switch shuts down generator and dis-
ables restarts.
Figure 3-6. External Auxiliary Shutdown Switch
NOTE: Whenever possible, perform the primary shut-
down procedure before disabling the generator with the
auxiliary shutdown switch.
See Figure 3-7. A second auxiliary shutdown switch (B)
is located inside the generator.
Figure 3-7. Internal Auxiliary Shutdown Switch
NOTE: Generator will not start if either switch is OPEN
(O). The controller displays an “Auxiliary Shutdown”
alarm, and the red LED “Alarm” light illuminates. To clear
this condition, set switch or switches to CLOSED (I).
Clear alarm by pressing OFF button, and then ENTER.
Generator can then be placed back in AUTO or MAN-
UAL.
Control Panel Interface
See Figure 3-8. The control panel interface (A) is located
under the enclosure lid. Verify both the left and right side
locks are unlocked before attempting to lift the lid of the
enclosure. Open the lid as directed in Opening the Lid.
Figure 3-8. Generator Control Panel
The 7.5A fuse is located beneath the rubber cover (B) to
the right of the control panel.
Verify both left and right side locks are securely out of the
way before closing the unit.
All appropriate panels must be in place during any opera-
tion of the generator. This includes operation by a servic-
ing technician while conducting troubleshooting
procedures.
Using the AUTO/OFF/MANUAL
Buttons
NOTE: Damage caused by mis-wiring of interconnect
wires is not warrantable.
Equipment Damage. The auxiliary shutdown switch
is not to be used to power down the unit under
normal operating circumstances. Doing so will
result in equipment damage. (000399)
CAUTION
005492
A
005491
B
Button Description of Operation
AUTO
Activates fully automatic system operation. Allows
unit to start automatically through two-wire start
when off-grid mode is enabled, or when utility is
lost with off-grid mode disabled.
Green LED flashes when automatic transfer
switch converts to generator power during a utility
power outage.
OFF Shuts down engine and prevents automatic oper-
ation of unit.
MANUAL
Cranks and starts generator. Transfer to standby
power will not occur unless there is a utility failure.
Blue LED flashes when automatic transfer switch
converts to generator power during a utility power
outage.
001798
A
B

Operation
16 Owner’s Manual for 60 Hz EcoGen™ Generators
Operating Modes Interface Menu Displays
LCD Panel
Mode Description
MANUAL
•Will not transfer to generator if utility is pres-
ent.
•Will transfer to generator if utility drops (below
65% of nominal for five consecutive seconds;
dealer programmable) after warm-up.
•Will transfer back when utility returns for 15
consecutive seconds (dealer programma-
ble). The engine will continue to run until
removed from MANUAL mode.
AUTO
•Will start and run if utility drops for five con-
secutive seconds (dealer programmable).
•Will start an engine warm-up timer (duration
varies when Cold Smart Start is enabled).
–Will not transfer if utility subsequently
returns.
–Will transfer to generator if utility is not
present.
•Will transfer to utility once utility returns
(above 80% of nominal) for 15 consecutive
seconds (dealer programmable).
•Will not transfer to utility unless utility returns.
Generator will shut down if OFF button is
pressed or a shutdown alarm is present.
•Once utility power is returned, generator will
shut down after one minute cool-down time.
Feature Description
HOME
page
Default page displayed if no buttons are
pressed for 60 seconds. Normally shows
current status message, and current date and
time. Highest priority active alarm/warning is
automatically posted on this page, as well as
flashing the backlight when such a condition
is detected. In the case of multiple alarms/
warnings, only the first message is displayed.
Press OFF button and then ENTER button to
clear an alarm or warning.
When “Hours of Protection” is displayed, this
represents total time the generator has been
monitoring utility supply and ready to provide
backup power if needed.
Display
Backlight
Normally off. Backlight will automatically
illuminate and remain on for 30 seconds if the
operator presses any button.
MAIN
MENU
page
Allows operator to navigate to all other pages
or sub-menus by using the arrow keys and the
ENTER button. Page can be accessed at any
time with several presses of the dedicated
ESCAPE button. Each press of the ESCAPE
button takes the operator to the previous
menu until the MAIN MENU displays. This
page contains information for History; Status;
Edit; and Debug.