Generac Power Systems 15 kW EcoGen Instruction sheet

Installation Guidelines
60 Hz Air-Cooled Generators
15 kW EcoGen™
SAVE THIS MANUAL FOR FUTURE REFERENCE
000918
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(000209a)
WARNING
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.
Register your Generac product at:
WWW.GENERAC.COM
1-888-GENERAC
(888-436-3722)

ii Installation Guidelines For 60 Hz EcoGen™ Generators
Use this page to record important information about your generator set.
Record the information found on your unit data label on this
page. For the location of the unit data label, see your owner’s
manual. The unit has a label plate affixed to the inside parti-
tion, to the left of the control panel console.
When contacting an Independent Authorized Service Dealer
(IASD) about parts and service, always supply the complete
model and serial numbers of the unit.
Operation and Maintenance: Proper maintenance and care
of the generator ensures a minimum number of problems
and keeps operating expenses at a minimum. 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 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 Independent Authorized Service
Dealer for assistance. To locate the nearest Independent
Authorized Service Dealer, please visit the dealer locator at:
www.generac.com/Service/DealerLocator/.
Model:
Serial:
Prod Date Week:
Volts:
LPV Amps:
NG Amps:
Hz:
Phase:
Controller P/N:
(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.
(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.

Installation Guidelines for the 60 hz EcoGen™ Generators iii
Section 1: Safety Rules & General
Information
Introduction ..........................................................1
Read This Manual Thoroughly ....................................1
How to Obtain Service .................................................1
Safety Rules .........................................................2
General Hazards .........................................................2
Exhaust Hazards .........................................................3
Electrical Hazards .......................................................3
Fire Hazards ................................................................4
Explosion Hazards ......................................................4
General Rules .......................................................5
Before You Begin ........................................................5
Standards Index ..........................................................5
Section 2: Unpacking and Inspection
General .................................................................7
Required Tools .....................................................7
Unpacking ............................................................7
Intake Side Panel Removal .........................................9
Rear Connections ................................................9
Generator Main Line Circuit Breaker ...............10
Parts Shipped Loose .........................................10
Section 3: Site Selection and Preparation
Site Selection .....................................................11
Installation Guidelines for Stationary
Air-Cooled Generators ..............................................12
Annex A — Explanatory Material ..............................12
Site Preparation .................................................13
Material Sufficient for Level Installation .....................13
Transportation Recommendations ............................14
Placement on Roofs, Platforms, and Other
Supporting Structures .......................................14
Section 4: Generator Placement
Generator Placement .........................................15
Fascia Installation (If Applicable) .....................16
Section 5: Fuel Conversion / Gas
Connections
Fuel Requirements and Recommendations ... 17
Fuel Conversion ................................................ 17
Fuel Consumption ............................................. 18
Fuel Line Sizing ................................................. 18
Natural Gas Pipe Sizing ............................................19
LP Vapor Pipe Sizing ................................................19
Installing and Connecting Gas Lines .............. 20
Shutoff Valve .............................................................20
Flexible Fuel Line ......................................................20
Sediment Trap ...........................................................20
Checking Gas Line Connections ..................... 21
Natural Gas Vapor Installation (typical) .......... 22
LP Vapor Installation (typical) .......................... 23
Section 6: Electrical Connections
Generator Connections .................................... 25
Control Wiring ................................................... 26
Main AC Wiring .................................................. 27
Service Entrance Decals ................................... 27
Common Alarm Relay (Option) ........................ 28
Automatic Voltage Regulator
(AVR) Cooling Fans ........................................... 28
Battery Requirements ....................................... 28
Battery Installation ............................................ 28
Battery Disposal ................................................ 29
Section 7: Control Panel Start-Up/Testing
Control Panel Interface ..................................... 31
Using the AUTO/MANUAL/OFF Buttons ..................31
Generator Setup ................................................ 31
Activation ...................................................................31
Before Initial Start-up ........................................ 33
Installation Wizard .....................................................33
Interconnect System Self Test Feature .....................33
Before starting, complete the following: ....................33
Electrical Checks ............................................... 35
Generator Tests Under Load ............................ 35
Table of Contents

Table of Contents
iv Installation Guidelines for the 60 hz EcoGen™ Generators
Checking Automatic Operation ........................35
Installation Summary ........................................36
Shutting Generator Down While Under Load ..36
Section 8: Troubleshooting
Engine Troubleshooting ...................................37
Generator Troubleshooting and
System Diagnosis ..............................................38
AVR Troubleshooting ........................................40
Section 9: Accessories
Section 10: Diagrams
IInstallation Drawing (10000002487—1 of 2) ............ 45
Installation Drawing (10000002487—2 of 2) ............. 46
Off Grid Mode Application Schematic .............47
Oil Make Up System Schematic .......................48

Safety Rules & General Information
Installation Guidelines For 60 Hz EcoGen™ Generators 1
Section 1: Safety Rules & General Information
Introduction
Thank you for purchasing this compact, high-
performance, variable speed, air-cooled, engine-driven
stationary automatic standby generator set. Every effort
has been made to ensure that the information and
instructions in this manual are both accurate and
complete at the time of release. However, the
manufacturer reserves the right to change, alter, or
otherwise improve this product at any time without prior
notice.
In off–grid applications as a part of an alternative energy
system, the generator starts when the inverter/battery
charger detects the normal power source voltage has
dropped below a preset level. The generator powers the
inverter and, once the voltage level of the battery rises to
an acceptable level, the generator is shut down. Another
off–grid application would be for use in remote locations
such as for pumping water for a village or campground,
or for livestock.
The unit is factory installed in an all–weather metal
enclosure and is intended for outdoor installation
only. The generator can be operated using either natural
gas (NG) or vapor withdrawn liquid propane (LP).
NOTE: When properly sized, this generator is suitable
for supplying typical residential loads such as induction
motors (sump pumps, refrigerators, air conditioners,
furnaces, etc.), electronic components (computer,
monitor, TV, etc.), lighting loads and microwaves, or
loads less than 10 kW or 2 hp.
The information in this manual is accurate based on
products produced at the time of publication. The
manufacturer reserves the right to make technical
updates, corrections, and product revisions at any time
without notice.
Read This Manual Thoroughly
If any portion of this manual is not understood, contact
the nearest Independent Authorized Service Dealer
(IASD) for starting, operating, and servicing procedures.
This manual must be used in conjunction with the
appropriate owner’s manual.
SAVE THESE INSTRUCTIONS: The manufacturer
suggests that this manual and the rules for safe operation
be copied and posted near the unit installation site.
Safety should be stressed to all operators and potential
operators of this equipment.
Throughout this publication and on tags and decals
affixed to the generator, DANGER, WARNING, and
CAUTION blocks are used to alert personnel to special
instructions about a particular operation that may be
hazardous if performed incorrectly or carelessly. Observe
them carefully. Their definitions are as follows:
NOTE: Notes provide additional information important to
a procedure or component.
Safety alerts cannot eliminate the hazards they indicate.
Observing safety precautions and strict compliance with
the special instructions while performing the action or
service are essential to preventing accidents.
The operator is responsible for proper and safe use of
the equipment. The manufacturer strongly recommends
that if the operator is also the owner, to read the owner’s
manual and thoroughly understand all instructions before
using this equipment. The manufacturer also strongly
recommends instructing other users to properly start and
operate the unit. This prepares them if they need to
operate the equipment in an emergency.
How to Obtain Service
When the generator requires servicing or repairs, contact
an IASD for assistance. Service technicians are factory-
trained and are capable of handling all service needs.
Please visit the dealer locater at: www.generac.com/
Service/DealerLocator/ to locate the nearest IASD.
(000100a)
WARNING
Consult Manual. Read and understand manual
completely before using product. Failure to
completely understand manual and product
could result in death or serious injury.
(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 Rules & General Information
2Installation Guidelines For 60 Hz EcoGen™ Generators
When contacting an IASD about parts and service,
always supply the complete model number and serial
number of the unit as given on its data decal, which is
located on the generator. Refer to owner’s manual for
decal location. Record the model and serial numbers in
the spaces provided on the inside front cover of this
manual.
Safety Rules
Study these SAFETY RULES carefully before installing,
operating, or servicing this equipment. Become familiar
with this installation manual, the owner’s 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.
The manufacturer cannot anticipate every possible
circumstance 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 the manufacturer does not
specifically recommend, verify that it is safe for others
and does not render the generator unsafe.
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.
DANGER
Accidental start-up. Disconnect power and render
unit inoperable before performing service work.
Failure to do so will result in death or serious injury.
(000344)
(000187)
WARNING
(000209a)
WARNING
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.
(000130)
WARNING
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.
(000182)
WARNING
WARNING
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.
See individual unit specifications for required
maintenance and run times pertaining to use. (000247)
(000155)
WARNING
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 damage to equipment or property.
(000115)
WARNING
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.
(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.

Safety Rules & General Information
Installation Guidelines 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
WARNING
Risk of injury. Do not operate or service this
machine if not fully alert. Fatigue can impair the
ability to service this equipment and could result
in death or serious injury. (000215)
WARNING
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.
(000228)
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. (000216)
Asphyxiation. Running engines produce
carbon monoxide, a colorless, odorless,
poisonous gas. Carbon monoxide, if not
avoided, will result in death or serious injury.
(000103)
DANGER
(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.
(000178a)
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.
WARNING
(000144)
DANGER
Electrocution. Contact with bare wires,
terminals, and connections while generator
is running will result in death or serious injury.
(000150)
DANGER
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.
(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.

Safety Rules & General Information
4Installation Guidelines For 60 Hz EcoGen™ Generators
Fire Hazards
•Comply with regulations the Occupational Safety
and Health Administration (OSHA) has
established. Verify 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.
Explosion Hazards
WARNING
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. (000217)
WARNING
Fire and explosion. Installation must comply
with all local, state, and national electrical
(000218)
building codes. Noncompliance could result in unsafe
operation, equipment damage, death or serious injury.
WARNING
Fire hazard. Use only fully-charged fire
(000219)
extinguishers rated “ABC” by the NFPA. Discharged or
improperly rated fire extinguishers will not extinguish
electrical fires in automatic standby generators.
(000100a)
WARNING
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
to use required safety equipment could result
in death or serious injury. (000257)
Electrocution. Refer to local codes and
standards for safety equipment required when
working with a live electrical system. Failure
(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
(000151)
DANGER
Connection of fuel source must be done by a qualified
professional technician or contractor. Incorrect installation
of this unit will result in death, serious injury, and damage
to equipment and property 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.

Safety Rules & General Information
Installation Guidelines For 60 Hz EcoGen™ Generators 5
General Rules
•Follow all safety precautions in the owner’s
manual, installation guidelines manual, and other
documents included with your equipment.
•Never energize a new system without opening all
disconnects and breakers.
•Always consult your local code for additional
requirements for the area in which the unit is being
installed.
•Improper installation can result in personal injury
and damage to the generator. It may also result in
the warranty being suspended or voided. All the
instructions listed below must be followed including
location clearances and pipe sizes.
Before You Begin
•Contact the local inspector or city hall to be aware
of all federal, state, and local codes that could
impact the installation. Secure all required permits
before starting the install.
•Carefully read and follow all of the procedures and
safety precautions detailed in the installation guide.
If any portion of the installation manual, technical
manual, or other factory-supplied documents is not
completely understood, contact an IASD for
assistance.
•Fully comply with all relevant NEC, NFPA, and
OSHA standards, as well as all federal, state, and
local building and electric codes. As with any
generator, this unit must be installed in accordance
with current NFPA 37 and NFPA 70 standards, as
well as any other federal, state, and local codes for
minimum distances from other structures.
•Verify the capacity of the natural gas meter or the
LP tank in regards to providing sufficient fuel for
both the generator and other household and
operating appliances.
Standards Index
•Strictly comply with all applicable national, state,
and local laws, as well as codes or regulations
pertaining to the installation of this engine-
generator power system. Use the most current
version of applicable codes or standards relevant
to the local jurisdiction, generator used, and
installation site.
NOTE: Not all codes apply to all products and this list is
not all-inclusive. In the absence of pertinent local laws
and standards, the following publications may be used as
a guide (these apply to localities which recognize NFPA
and IBC).
1. National Fire Protection Association (NFPA) 70:
The NATIONAL ELECTRIC CODE (NEC) *
2.
NFPA 10: Standard for Portable Fire Extinguishers *
3. NFPA 30: Flammable and Combustible Liquids
Code *
4. NFPA 37: Standard for Stationary Combustion
Engines and Gas Turbines *
5. NFPA 54: National Fuel Gas Code *
6. NFPA 58: Standard for Storage and Handling Of
Liquefied Petroleum Gases *
7. NFPA 68: Standard On Explosion Protection By
Deflagration Venting *
8. NFPA 70E: Standard For Electrical Safety In The
Workplace *
9. NFPA 110: Standard for Emergency and Standby
Power Systems *
10. NFPA 211: Standard for Chimneys, Fireplaces,
Vents, and Solid Fuel Burning Appliances *
11. NFPA 220: Standard on Types of Building
Construction *
12. NFPA 5000: Building Code *
(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.
(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.
(000182)
WARNING
WARNING
to use required safety equipment could result
in death or serious injury. (000257)
Electrocution. Refer to local codes and
standards for safety equipment required when
working with a live electrical system. Failure
(000209a)
WARNING
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.

Safety Rules & General Information
6Installation Guidelines For 60 Hz EcoGen™ Generators
13. International Building Code **
14. Agricultural Wiring Handbook ***
15. Article X, NATIONAL BUILDING CODE
16. ASAE EP-364.2 Installation and Maintenance of
Farm Standby Electric Power ****
17. ICC:IFGC
This list is not all-inclusive. Check with the Authority
Having Local Jurisdiction (AHJ) for any local codes or
standards which may be applicable to your jurisdiction.
The above listed standards are available from the
following internet sources:
* www.nfpa.org
** www.iccsafe.org
*** www.rerc.org Rural Electricity Resource Council P.O.
Box 309 Wilmington, OH 45177-0309
**** www.asabe.org American Society of Agricultural &
Biological Engineers 2950 Niles Road, St. Joseph, MI
49085