Kohler 18TRES, 12RES, 8.5RES, 12TRES, 18RES Installation Manual

Installation

Residential/Commercial Generator Sets

Models:

8.5/12/17/18RES
12/18TRES

Controller:

Advanced Digital Control ADC-RES

TP-6514 9/09e

California Proposition 65

WARNING

Engine exhaust from this product contains chemicals
known to the State of California to cause cancer, birth
defects, or other reproductive harm.

Product Identification Information

Generator Set Identification Numbers

Record the product identification numbers from the
generator set nameplate(s).

Model Designation

Specification Number

Serial Number

Accessory Number Accessory Description

Engine Identification

Record the product identification information from the
engine nameplate.

Manufacturer

Model Designation

Serial Number

Controller Identification

Record the controller description from the generator set
operation manual, spec sheet, or sales invoice.

Controller Description

Table of Contents

Product Identification Information 2............................................................

Safety Precautions and Instructions 5........................................................

Introduction 9...............................................................................

Service Assistance 12........................................................................

Section 1 Installation 13......................................................................

1.1 General 13..............................................................

1.2 Lifting 13...............................................................

1.3 Generator Set Inspection 13...............................................

1.4 Location and Mounting 13.................................................

1.4.1 Exhaust Requirements 21.........................................

1.4.2 Air Requirements 21..............................................

1.5 Power Supply 22.........................................................

1.6 Fuel Requirements 22....................................................

1.6.1 Fuel Supply 22..................................................

1.6.2 Fuel Pipe Size 24................................................

1.7 Fuel Conversion 24......................................................

1.7.1 Fuel Conversion, 8.5/12 kW 25....................................

1.7.2 Fuel Conversion, 17/18 kW 26.....................................

1.8 Electrical Connections 28.................................................

1.8.1 AC Connections 28...............................................

1.8.2 Remote Start Connection 30.......................................

1.8.3 Grounding 30....................................................

1.8.4 Battery Charger 30...............................................

1.9 Battery 31...............................................................

1.10 Accessories 32..........................................................

1.10.1 Common Fault and Auxiliary Run Relay Board 32....................

1.10.2 Carburetor Heater 33.............................................

1.11 Prestart Installation Check 35..............................................

1.12 Startup Notification 35....................................................

1.13 Controller Configuration 35................................................

1.13.1 System Parameters 35............................................

1.13.2 Application Code Version 36.......................................

1.14 Voltage and Frequency Adjustments 38.....................................

1.14.1 Voltage Adjustment 38............................................

1.14.2 Frequency Adjustment 39.........................................

Section 2 Wiring Diagrams 43................................................................

Appendix A Abbreviations 53..................................................................

TP-6514 9/09 Table of Contents 3

Notes

TP-6514 9/094

Safety Precautions and Instructions

IMPORTANT SAFETY INSTRUCTIONS.

Electromechanical equipment,
including generator sets, transfer
switches, switchgear, and accessories,
can cause bodily harm and pose
life-threatening danger when
improperly installed, operated, or
maintained. To prevent accidents be
aware of potential dangers and act
safely. Read and follow all safety
precautions and instructions. SAVE
THESE INSTRUCTIONS.

This manual has several types of safety
precautions and instructions: Danger,
Warning, Caution, and Notice.

DANGER

Danger indicates the presence of a
hazard that will cause severe

personal injury, death,orsubstantial
property damage.

WARNING

Warning indicates the presence of a
hazard that can cause severe

personal injury, death, or substantial
property damage.

CAUTION

Caution indicates the presence of a
hazard that will or can cause minor
personal injury or property damage.

NOTICE

Notice communicates installation,
operation, or maintenance information
that is safety related but not hazard
related.

Safety decals affixed to the equipment
in prominent places alert the operator
or service technician to potential
hazards and explain how to act safely.
The decals are shown throughout this
publication to improve operator
recognition. Replace missing or
damaged decals.

Accidental Starting

WARNING

Accidental starting.
Can cause severe injury or death.

Disconnect the battery cables before
working on the generator set.
Remove the negative (--) lead first
when disconnecting the battery.
Reconnect the negative (--) lead last
when reconnecting the battery.

Disabling the generator set.
Accidental starting can cause
severe injury or death. Before

working on the generator set or
connected equipment, disable the
generator set as follows: (1) Move the
generator set master switch to the OFF
position. (2) Disconnect the power to
the battery charger. (3) Remove the
battery cables, negative (--) lead first.
Reconnect the negative (--) lead last
when reconnecting the battery. Follow
these precautions to prevent starting of
the generator set by an automatic
transfer switch, remote start/stop
switch, or engine start command from a
remote computer.

Battery

WARNING

Sulfuric acid in batteries.
Can cause severe injury or death.

Wear protective goggles and
clothing. Battery acid may cause
blindness and burn skin.

WARNING

Explosion.
Can cause severe injury or death.
Relays in the battery charger
cause arcs or sparks.

Locate the battery in a well-ventilated
area. Isolate the battery charger from
explosive fumes.

Battery electrolyte is a diluted
sulfuric acid. Battery acid can cause
severe injury or death. Battery acid

can cause blindness and burn skin.
Always wear splashproof safety
goggles, rubber gloves, and boots
when servicing the battery. Do not
open a sealed battery or mutilate the
battery case. If battery acid splashes in
the eyes or on the skin, immediately
flush the affected area for 15 minutes
with large quantities of clean water.
Seek immediate medical aid in the case
of eye contact. Never add acid to a
battery after placing the battery in
service, as this may result in hazardous
spattering of battery acid.

Battery acid cleanup. Battery acid
can cause severe injury or death.

Battery acid is electrically conductive
and corrosive. Add 500 g (1 lb.) of
bicarbonate of soda (baking soda) to a
containerwith4L(1gal.)ofwaterand
mix the neutralizing solution. Pour the
neutralizing solution on the spilled
battery acid and continue to add the
neutralizing solution to the spilled
battery acid until all evidence of a
chemical reaction (foaming) has
ceased. Flush the resulting liquid with
water and dry the area.

TP-6514 9/09 5Safety Precautions and Instructions

Battery gases. Explosion can cause
severe injury or death. Battery gases

can cause an explosion. Do not smoke
or permit flames or sparks to occur near
a battery at any time, particularly when
it is charging. Do not dispose of a
battery in a fire. To prevent burns and
sparks that could cause an explosion,
avoid touching the battery terminals
with tools or other metal objects.
Remove all jewelry before servicing the
equipment. Discharge static electricity
from your body before touching
batteries by first touching a grounded
metal surface away from the battery. To
avoid sparks, do not disturb the battery
charger connections while the battery
is charging. Always turn the battery
charger off before disconnecting the
battery connections. Ventilate the
compartments containing batteries to
prevent accumulation of explosive
gases.

Battery short circuits. Explosion
can cause severe injury or death.

Short circuits can cause bodily injury
and/or equipment damage.
Disconnect the battery before
generator set installation or
maintenance. Remove all jewelry
before servicing the equipment. Use
tools with insulated handles. Remove
the negative (--) lead first when
disconnecting the battery. Reconnect
the negative (--) lead last when
reconnecting the battery. Never
connect the negative (--) battery cable
to the positive (+) connection terminal
of the starter solenoid. Do not test the
battery condition by shorting the
terminals together.

Engine Backfire/Flash
Fire

WARNING

Fire.
Can cause severe injury or death.

Do not smoke or permit flames or
sparks near fuels or the fuel system.

Servicing the fuel system. A flash
fire can cause severe injury or death.

Do not smoke or permit flames or
sparks near the carburetor, fuel line,
fuel filter, fuel pump, or other potential
sources of spilled fuels or fuel vapors.
Catch fuels in an approved container
when removing the fuel line or
carburetor.

Combustible materials. A fire can
cause severe injury or death.

Generator set engine fuels and fuel
vapors are flammable and explosive.
Handle these materials carefully to
minimize the risk of fire or explosion.
Equip the compartment or nearby area
with a fully charged fire extinguisher.
Select a fire extinguisher rated ABC or
BC for electrical fires or as
recommended by the local fire code or
an authorized agency. Train all
personnel on fire extinguisher
operation and fire prevention
procedures.

Exhaust System

WARNING

Carbon monoxide.
Can cause severe nausea,
fainting, or death.

The exhaust system must be
leakproof and routinely inspected.

Generator set operation. Carbon
monoxide can cause severe nausea,
fainting, or death. Carbon monoxide

is an odorless, colorless, tasteless,
nonirritating gas that can cause death if
inhaled for even a short time. Avoid
breathing exhaust fumes when working
on or near the generator set. Never
operate the generator set inside a
building. Never operate the generator
set where exhaust gas could seep
inside or be drawn into a potentially
occupied building through windows, air
intake vents, or other openings.

Carbon monoxide symptoms.
Carbon monoxide can cause severe
nausea, fainting, or death. Carbon

monoxide is a poisonous gas present in
exhaust gases. Carbon monoxide is an
odorless, colorless, tasteless,
nonirritating gas that can cause death if
inhaled for even a short time. Carbon
monoxide poisoning symptoms include
but are not limited to the following:

D Light-headedness, dizziness
D Physical fatigue, weakness in

joints and muscles

D Sleepiness, mental fatigue,

inability to concentrate
or speak clearly, blurred vision

D Stomachache, vomiting, nausea
If experiencing any of these symptoms
and carbon monoxide poisoning is
possible, seek fresh air immediately
and remain active. Do not sit, lie down,
or fall asleep. Alert others to the
possibility of carbon monoxide
poisoning. Seek medical attention if
the condition of affected persons does
not improve within minutes of breathing
fresh air.

Fuel System

WARNING

Explosive fuel vapors.
Can cause severe injury or death.

Use extreme care when handling,
storing, and using fuels.

Gas fuel leaks. Explosive fuel
vapors can cause severe injury or
death. Fuel leakage can cause an

explosion. Check the LP vapor gas or
natural gas fuel system for leakage by
using a soap and water solution with
the fuel system test pressurized to
6--8 ounces per square inch
(10--14 inches water column). Do not
use a soap solution containing either
ammonia or chlorine because both
prevent bubble formation. A successful
test depends on the ability of the
solution to bubble.

Servicing the air cleaner. A sudden
backfire can cause severe injury or
death. Do not operate the generator

set with the air cleaner removed.

TP-6514 9/096 Safety Precautions and Instructions

Hazardous Noise

CAUTION

Hazardous noise.
Can cause hearing loss.

Never operate the generator set
without a muffler or with a faulty
exhaust system.

Engine noise. Hazardous noise can
cause hearing loss. Generator sets

not equipped with sound enclosures
can produce noise levels greater than
105 dBA. Prolonged exposure to noise
levels greater than 85 dBA can cause
permanent hearing loss. Wear hearing
protection when near an operating
generator set.

Hazardous Voltage/
Moving Parts

WARNING

Hazardous voltage.
Can cause severe injury or death.

Operate the generator set only when
all guards and electrical enclosures
areinplace.

WARNING

Hazardous voltage.
Backfeed to the utility system can
cause property damage, severe
injury, or death.

If the generator set is used for
standby power, install an automatic
transfer switch to prevent inadvertent
interconnection of standby and
normal sources of supply.

Moving parts.

CAUTION

Welding the generator set.
Can cause severe electrical
equipment damage.

Never weld components of the
generator set without first
disconnecting the battery, controller
wiring harness, and engine electronic
control module (ECM).

Grounding electrical equipment.
Hazardous voltage can cause
severe injury or death. Electrocution

is possible whenever electricity is
present. Ensure you comply with all
applicable codes and standards.
Electrically ground the generator set,
transfer switch, and related equipment
and electrical circuits. Turnoff the main
circuit breakers of all power sources
before servicing the equipment. Never
contact electrical leads or appliances
when standing in water or on wet
ground because these conditions
increase the risk of electrocution.

Welding on the generator set. Can
cause severe electrical equipment
damage. Before welding on the

generator set perform the following
steps: (1) Remove the battery cables,
negative (--) lead first. (2) Disconnect
all engine electronic control module
(ECM) connectors. (3) Disconnect all
generator set controller and voltage
regulator circuit board connectors.
(4) Disconnect the engine battery­charging alternator connections.
(5) Attach the weld ground connection
close to the weld location.

Connecting the battery and the
battery charger. Hazardous voltage
can cause severe injury or death.

Reconnect the battery correctly,
positive to positive and negative to
negative, to avoid electrical shock and
damage to the battery charger and
battery(ies). Have a qualified
electrician install the battery(ies).

Short circuits. Hazardous
voltage/current can cause severe
injury or death. Short circuits can

cause bodily injury and/or equipment
damage. Do not contact electrical
connections with tools or jewelry while
making adjustments or repairs.
Remove all jewelry before servicing the
equipment.

Electrical backfeed to the utility.
Hazardous backfeed voltage can
cause severe injury or death. Install

a transfer switch in standby power
installations to prevent the connection
of standby and other sources of power.
Electrical backfeed into a utility
electrical system can cause severe
injury or death to utility personnel
working on power lines.

WARNING

Airborne particles.
Can cause severe injury or
blindness.

Wear protective goggles and clothing
when using power tools, hand tools,
or compressed air.

Heavy Equipment

WARNING

Unbalanced weight.
Improper lifting can cause severe
injury or death and equipment
damage.

Do not use lifting eyes.
Lift the generator set using lifting bars
inserted through the lifting holes on
the skid.

TP-6514 9/09 7Safety Precautions and Instructions

Hot Parts

Notice

WARNING

Hot engine and exhaust system.
Can cause severe injury or death.

Do not work on the generator set until
it cools.

Servicing the exhaust system. Hot
parts can cause severe injury or
death. Do not touch hot engine parts.

The engine and exhaust system
components become extremely hot
during operation.

Servicing the engine heater. Hot
parts can cause minor personal
injury or property damage. Install the

heater before connecting it to power.
Operating the heater before installation
can cause burns and component
damage. Disconnect power to the
heater and allow it to cool before
servicing the heater or nearby parts.

NOTICE

Canadian installations only.For
standby service connect the output of
the generator set to a suitably rated
transfer switch in accordance with
Canadian Electrical Code, Part 1.

TP-6514 9/098 Safety Precautions and Instructions

Introduction

This manual provides installation instructions for
Residential/Commercial model generator sets listed on
the front cover. Refer to TP-6515, Operation Manual, for
generator set operation and maintenance instructions.

The generator set is approved for use in stationary
applications in locations served by a reliable utility
power source.

Have an authorized distributor/dealer install the
generator set outdoors according to the instructions in
this manual. The generator set installation must comply
with the National Electrical Code (NEC) and local code
requirements. Do not install this generator set indoors.

Information in this publication represents data available
at the time of print. Kohler Co. reserves the right to
change this publication and the products represented
without notice and without any obligation or liability
whatsoever.

Read this manual and carefully follow all procedures
and safety precautions to ensure proper equipment
operation and to avoid bodily injury. Read and follow the
Safety Precautions and Instructions section at the
beginning of this manual.

See Figure 1 and Figure 2 for generator set component
locations.

19 2017

75 61234

16

8

9

18 21

22

23

10

15

25

12

14 13

1. Muffler

2. Oil check

3. Oil fill

4. Air cleaner

5. Fuses

6. RS-232 connector (for application program updates)

7. Controller user interface

8. Generator set master switch (RUN-OFF/RESET-AUTO)

9. Load circuit breaker

10. Field-connection terminal block location (RES models)

11. Spark plug locations (both sides)

12. Oil drain hose

13. Oil drain valve

11

14. Oil filter

15. Exhaust

16. Equipment ground

17. Relay board location (optional)

18. Battery charger

19. DSAI lead location

20. Fuel block

21. Gas regulator assembly

22. Fuel solenoid valve

23. Fuel inlet

24. Air intake

25. Engine starting battery location (battery purchased separately)

Figure 1 Generator Set Component Locations, 8.5/12 kW Models

24

ADV-7466-

TP-6514 9/09 9

Control detail

8

17

12

9

11

10

See control

12 5421

3

6

18

19

20

22

detail

7

23

24

29

28

27

25

ADV-7341A-B

16

1415

13

26

1. Muffler

2. Oil check

3. Oil fill

4. Air cleaner

5. Spark plug locations (both sides)

6. Oil filter

7. Oil cooler location

8. ADC-RES Advanced Digital Control user interface

9. Generator set master switch (RUN-OFF/RESET-AUTO)

10. Line circuit breaker

11. Fuses

12. RS-232 connector (for application program updates)

13. Engine starting battery location (battery purchased separately)

14. Oil drain hose

15. Nameplate location (on base)

16. Oil drain valve

17. Exhaust

18. Relay board location (optional)

19. Carburetor heater access opening

20. LP fuel orifice location (inside hose fitting)

21. Gas regulator assembly

22. DSAI leads

23. Fuel solenoid valve

24. Fuel inlet

25. Air intake

26. Battery cables

27. Battery charger

28. Field-connection terminal block location (RES models)

29. 120 VAC receptacles for battery charger and optional
carburetor heater

Figure 2 Generator Set Component Locations, 17/18 kW Models

TP-6514 9/0910

2

1

3

GM66010

1. Emergency stop button

2. Field-connection terminal block and circuit breakers

3. Cable inlet area

Figure 3 Additional Components, TRES (3-phase)

Models

TP-6514 9/09 11

Service Assistance

For professional advice on generator set power
requirements and conscientious service, please contact
your nearest Kohler distributor or dealer.

D Consult the Yellow Pages under the heading

Generators—Electric.

D Visit the Kohler Power Systems website at

KohlerPower.com.

D Look at the labels and stickers on your Kohler product

or review the appropriate literature or documents
included with the product.

D Call toll free in the US and Canada 1-800-544-2444.

D Outside the US and Canada, call the nearest regional

office.

Headquarters Europe, Middle East, Africa
(EMEA)

Kohler Power Systems
3 rue de Brennus
93200 Saint Denis
France
Phone: [phone]
Fax: [phone]

Asia Pacific

Power Systems Asia Pacific Regional Office
Singapore, Republic of Singapore
Phone: [phone]
Fax: [phone]

China

North China Regional Office, Beijing
Phone: [phone]

(86) 10 6518 7951
(86) 10 6518 7952

Fax: [phone]

East China Regional Office, Shanghai
Phone: [phone]
Fax: [phone]

India, Bangladesh, Sri Lanka

India Regional Office
Bangalore, India
Phone: [phone]

(91) 80 3366231

Fax: [phone]

Japan, Korea

North Asia Regional Office
Tokyo, Japan
Phone: [phone]
Fax: [phone]

Latin America

Latin America Regional Office
Lakeland, Florida, USA
Phone: [phone]
Fax: [phone]

TP-6514 9/0912

Section 1 Installation

1.1 General

Have an authorized distributor/dealer install the
generator set outdoors according to the instructions in
this manual. Do not install this generator set indoors.

Use the specifications provided here only in the initial
planning. Use the generator set and transfer switch
dimension drawings and wiring diagrams for installation.

1.2 Lifting

WARNING

Unbalanced weight.
Improper lifting can cause severe
injury or death and equipment
damage.

Do not use lifting eyes.
Lift the generator set using lifting bars
inserted through the lifting holes on
the skid.

Model Weight, kg (lb.)

8.5 kW 180 (400)

12 kW 186 (410)

17/18 kW 227 (500)

Figure 1-1 Approximate Weights

Approximate generator set weights are shown in
Figure 1-1. Use lifting bars inserted through the holes in
the skid to lift the unit. See the dimension drawings on
the following pages for lifting hole locations.

1.3 Generator Set Inspection

Complete a thorough inspection of the generator set.
Check for the following:

1. Inspect the generator set for loose or damaged
parts or wires. Repair or tighten any loose parts
before installation.

2. Check the engine oil. Fill, if necessary, with the
recommended viscosity and grade of oil. Use
synthetic oil, API (American Petroleum Institute)
Service Class SG or higher. See TP-6515,
Operation Manual, for additional information.

1.4 Location and Mounting

See the dimension drawings on the following pages for
the generator set dimensions and fuel and electric inlet
locations. The drawing dimensions are shown in
millimeters, with inches in brackets.

Install the generator set outdoors. Provide the minimum
clearance around the generator set shown in the
clearance drawings on the following pages. Locate the
generator set so that the hot exhaust does not blow on
plants or other combustible materials. Do not install the
generator set where exhaust gas could accumulate and
seep inside or be drawn into a potentially occupied
building.

The generator set is shipped on a plastic mounting pad.
Prepare a flat, level mounting area covered with a weed
barrier and gravel as shown in the generator set
clearance drawing. Set the plastic mounting pad directly
on the gravel. Do not install the mounting pad directly on
grass.

See Figure 1-4 for the high wind mounting detail for the

8.5/12 kW model.

TP-6514 9/09 13Section 1 Installation

Figure 1-2 Generator Set Mounting Details and Dimensions, 8.5RES, 12RES, and 12TRES (3-phase),

ADV-7466, Sheet 1

TP-6514 9/0914 Section 1 Installation

Figure 1-3 Generator Set Clearances, 8.5RES, 12RES, and 12TRES (3-phase), ADV-7466, Sheet 2

TP-6514 9/09 15Section 1 Installation

Figure 1-4 High Wind Mounting Detail, 8.5RES, 12RES, and 12TRES (3-phase), ADV-7466, Sheet 3

TP-6514 9/0916 Section 1 Installation

Figure 1-5 Generator Set Mounting Details and Dimensions, 17RES and 18RES, ADV-7341-B, Sheet 1

TP-6514 9/09 17Section 1 Installation

Figure 1-6 Generator Set Clearances, 17RES and 18RES, ADV-7341-B, Sheet 2

TP-6514 9/0918 Section 1 Installation

Figure 1-7 Generator Set Mounting Details and Dimensions, 18TRES (3-phase), ADV-7713, Sheet 1

TP-6514 9/09 19Section 1 Installation

Figure 1-8 Generator Set Clearances, 18TRES (3-phase), ADV-7713, Sheet 2

TP-6514 9/0920 Section 1 Installation

1.4.1 Exhaust Requirements

1.4.2 Air Requirements

WARNING

Carbon monoxide.
Can cause severe nausea,
fainting, or death.

The exhaust system must be
leakproof and routinely inspected.

Generator set operation. Carbon monoxide can cause
severe nausea, fainting, or death. Carbon monoxide is an

odorless, colorless, tasteless, nonirritating gas that can cause
death if inhaled for even a short time. Avoid breathing exhaust
fumes when working on or near the generator set. Never
operate the generator set inside a building. Never operate the
generator set where exhaust gas could seep inside or be
drawn into a potentially occupied building through windows, air
intake vents, or other openings.

The exhaust system is complete for generator sets
installed outdoors. Do not install this generator set
indoors.

Figure 1-9 gives the exhaust flow and temperature at
rated load. The engine exhaust mixes with the
generator set cooling air at the exhaust end of the
enclosure. Mount the generator set so that the hot
exhaust does not blow on plants or other combustible
materials. Maintain the clearances shown in Figure 1-3
or Figure 1-6.

Exhaust System 60 Hz 50 Hz

Exhaust flow at rated kW,

3

/min. (cfm)

m

8.5 kW 3.3 (115) 2.7 (96)

12 kW 3.8 (135) 3.2 (113)

17/18 kW 5.3 (187) 4.4 (155)

Exhaust gas exiting the enclosure
at rated kW, _C(_F)

Figure 1-9 Exhaust Flow and Temperature

216 (420)

The generator set requires correct air flow for cooling
and combustion. The inlet and outlet openings in the
sound enclosure provide the cooling and combustion
air. Figure 1-10 shows the locations of the cooling air
intake and exhaust vents. Inspect the air inlet and outlet
openings inside and outside the housing to ensure that
the air flow is not blocked.

3

1

2

1. Exhaust outlet

2. Alternator air intake (both sides)

3. Engine air intake

3

tp6195

Figure 1-10 Cooling Air Intake and Exhaust, Typical

Air Requirements, m

Model Hz

8.5 kW

12 kW

17/18 kW

60 26.9 (950) 0.94 (33.4) 27.8 (980)

50 22.4 (790) 0.8 (28.0) 23.2 (820)

60 26.9 (950) 1.1 (39.2) 28.0 (990)

50 22.4 (790) 0.9 (32.6) 23.4 (825)

60 28.0 (989) 1.62 (57.3) 29.6 (1045)

50 22.6 (798) 1.42 (50.1) 24.0 (848)

Cooling

Air

3

/min. (cfm)

Combustion

Air

Tot a l

Inlet Air

Figure 1-11 Air Requirements

TP-6514 9/09 21Section 1 Installation

1.5 Power Supply

1.6 Fuel Requirements

Power must be supplied from a source that is GFCI
protected to the generator set location for the battery
charger and the optional accessories shown in
Figure 1-12.

Connect power from a circuit on the essential loads
panel to the utility power connection points on the
terminal block. See Section 1.8 and the wiring diagrams
in Section 2 for connection details. See Figure 1-12 or
Figure 1-13 for the power requirements for the battery
charger and accessories.

Power Requirement, Max.

Equipment

Battery charger (standard) 192 1.6

Carburetor heater (optional)

Battery heater (optional) 110 0.92

Watts Amps Vol t s

37 0.33

120

Figure 1-12 Power Requirements, RES Models

Power Requirement, Max.

Equipment

Battery charger 60 0.26

Carburetor heater

Watts Amps Vol t s

37 0.16

230

Figure 1-13 Power Requirements, TRES (3-phase)

Models

The generator set operates using natural gas or LP
vapor fuel. The generator set is EPA-certified for both
natural gas and LP vapor fuels.

The fuel system installation must comply with the NEC
and local codes.

1.6.1 Fuel Supply

Because of variable climates and geographical
considerations, contact the local fuel supplier for fuel
system planning and installation. Figure 1-14 lists the
recommended fuel ratings and other fuel supply
information for natural gas and LP vapor fuels.

Natural

Fuel type

Fuel supply inlet 1/2 NPT

Fuel supply pressure, kPa (in. H2O)

8.5/12 kW

Fuel supply pressure, kPa (in. H2O),
17/18 kW

Fuel flow rate, Btu/hr.

8.5 kW 132000 180000

12 kW 193000 203000

17/18 kW 242000 280000

Nominal Fuel Rating, Btu/ft.

Natural gas 1000

LP vapor 2500

3

GasLPVapor

1.3--2.7
(5--11)

1.7--2.7
(7--11)

1.7--2.7
(7--11)

Figure 1-14 Fuel Supply

Verify that the output pressure from the primary gas
utility (or LP tank) pressure regulator is 1.7--2.7 kPa
(7--11 in. water column) and that the utility gas meter
flow rate is sufficient to supply the generator set at rated
load plus all other gas-consuming appliances. See
Figure 1-15, Figure 1-16, or Figure 1-17 for fuel
consumption. Contact the fuel supplier for flow rate
information or a gas meter upgrade.

Figure 1-2 or Figure 1-5 shows the location of the fuel
inlet connection. Use flexible sections to prevent fuel
line breakage caused by vibration. Hold the fuel
solenoid valve with a wrench when tightening the fuel
connections. Protect all fuel lines from machinery or
equipment contact, adverse weather conditions, and
environmental damage.

TP-6514 9/0922 Section 1 Installation

Fuel Consumption,
at % load, m

3

/hr. (cfh)

60 Hz 50 Hz

Natural Gas, m3/hr. (cfh)

100% 3.7 (132) 3.3 (118)

75% 3.2 (113) 2.9 (101)

50% 2.6 (93) 2.3 (83)

25% 2.2 (77) 1.9 (69)

LP Vapor, m3/hr. (cfh)

100% 2.0 (72) 1.7 (61)

75% 1.3 (45) 1.1 (38)

50% 1.0 (36) 0.9 (31)

25% 0.8 (29) 0.7 (25)

LP vapor conversion factors:

Nominal fuel rating:

3

8.58 ft.

0.535 m

36.39 ft.

Natural gas: 37 MJ/m
LP vapor: 93 MJ/m

=1lb.

3

=1kg

3

= 1 gal.

3

(1000 Btu/ft.3)

3

(2500 Btu/ft.3)

Fuel Consumption,
at % load, m

3

/hr. (cfh)

60 Hz 50 Hz

Natural Gas, m3/hr. (cfh)

100% 6.9 (242) 5.7 (203)

75% 5.8 (204) 4.7 (167)

50% 4.4 (155) 3.8 (133)

25% 3.4 (120) 2.9 (103)

LP Vapor, m3/hr. (cfh)

100% 3.2 (112) 2.7 (94)

75% 2.7 (96) 2.2 (79)

50% 2.1 (74) 1.7 (62)

25% 1.6 (57) 1.4 (50)

LP vapor conversion factors:

Nominal fuel rating:

3

8.58 ft.

0.535 m

36.39 ft.

Natural gas: 37 MJ/m
LP vapor: 93 MJ/m

=1lb.

3

=1kg

3

= 1 gal.

3

(1000 Btu/ft.3)

3

(2500 Btu/ft.3)

Figure 1-15 Fuel Consumption, 8.5 kW

Fuel Consumption,
at % load, m

Natural Gas, m3/hr. (cfh)

100% 5.9 (209) 4.9 (175)

75% 4.8 (168) 4.0 (141)

50% 3.6 (127) 3.0 (106)

25% 2.4 (85) 2.0 (71)

LP Vapor, m3/hr. (cfh)

100% 3.1 (108) 2.5 (89)

75% 2.5 (87) 2.0 (72)

50% 1.9 (65) 1.5 (53)

25% 1.2 (44) 1.0 (36)

LP vapor conversion factors:

8.58 ft.

0.535 m

36.39 ft.

Nominal fuel rating:

Natural gas: 37 MJ/m
LP vapor: 93 MJ/m

3

=1lb.

3

3

3

/hr. (cfh)

=1kg

= 1 gal.

3

(1000 Btu/ft.3)

3

(2500 Btu/ft.3)

60 Hz 50 Hz

Figure 1-17 Fuel Consumption, 17/18 kW

Figure 1-16 Fuel Consumption, 12 kW

TP-6514 9/09 23Section 1 Installation

1.6.2 Fuel Pipe Size

1.7 Fuel Conversion

Ensure that the natural gas pipe size and length meet
the specifications in Figure 1-18, Figure 1-19, or
Figure 1-20. Measure the pipe length from the primary
gas pressure regulator to the pipe connection on the
generator set fuel inlet. Add 2.4 m (8 ft.) to the
measured length for each 90 degree elbow. Compare
the total pipe length with the chart in Figure 1-18,
Figure 1-19, or Figure 1-20 to find required pipe size.

Contact local LP provider for LP installation information.

Pipe Size, in. NPT Maximum Pipe Length m (ft.)

3/4 18.3 m (60 ft.)

1 61 m (200 ft.)

11/4 91.5 m (300 ft.)

Figure 1-18 Fuel Pipe Size, Natural Gas, 8.5 kW

Pipe Size, in. NPT Maximum Pipe Length, m (ft.)

3/4 9.2 m (30 ft.)

1 30 m (100 ft.)

11/4 68.6 m (225 ft.)

Figure 1-19 Fuel Pipe Size, Natural Gas, 12 kW

Minimum Gas Pipe Size Recommendation, in. NPT

Natural Gas

Pipe Length, m (ft.)

8 m (25 ft.) 1 3/4

15 m (50 ft.) 1 1

30 m (100 ft.) 11/4 1

46 m (150 ft.) 11/4 11/4

61 m (200 ft.) 11/4 11/4

(242,000 Btu/hr.)

LP Vapor

(280,000 Btu/hr.)

The multi-fuel system allows conversion from natural
gas to LP vapor (or vice-versa) in the field while
maintaining emissions-standard compliance. A trained
technician or an authorized distributor/dealer can
convert the fuel system.

WARNING

Accidental starting.
Can cause severe injury or death.

Disconnect the battery cables before
working on the generator set.
Remove the negative (--) lead first
when disconnecting the battery.
Reconnect the negative (--) lead last
when reconnecting the battery.

Disabling the generator set. Accidental starting can
cause severe injury or death. Before working on the

generator set or connected equipment, disable the generator
set as follows: (1) Move the generator set master switch to the
OFF position. (2) Disconnect the power to the battery charger.
(3) Remove the battery cables, negative (--) lead first.
Reconnect the negative (--) lead last when reconnecting the
battery. Follow these precautions to prevent starting of the
generator set by an automatic transfer switch, remote
start/stop switch, or engine start command from a remote
computer.

WARNING

Figure 1-20 Fuel Pipe Size, 17/18 kW

Explosive fuel vapors.
Can cause severe injury or death.

Use extreme care when handling,
storing, and using fuels.

TP-6514 9/0924 Section 1 Installation

1.7.1 Fuel Conversion, 8.5/12 kW

4. Turn off the fuel supply.

Two fuel connections on the fuel block allow field­conversion between natural gas and LP vapor. The fuel
metering valves are factory-set and sealed to comply
with applicable emission standards and to provide the
best possible hot and cold starting.

Note: Do not adjust the factory-sealed fuel-metering

adjustments on the fuel block. Changing the fuel­metering adjustments may violate federal or state
laws.

Use the following procedure to convert from natural gas
(NG) to LP vapor, moving the fuel connection from the
natural gas to the LP port, plugging the natural gas port,
and disconnecting the leads for the digital spark
advance ignition (DSAI). See Figure 1-21 for the fuel
system component locations.

1

2

5. Remove the hose clamp and fuel hose from the
hose fitting in the fuel block. See Figure 1-22.

1

5

2

Natural gas

4

1. Fuel block

2. Fuel metering valves—factory-sealed, do not adjust

3. Fuel inlet, 1/2 in. NPT

4. Hose fitting

5. Plug

setup shown

Figure 1-22 Fuel Block, 8.5/12 kW

3

tp6195

GM29253

1. DSAI connector location

2. Fuel block

3. Fuel inlet, 1/2 in. NPT female

Figure 1-21 Fuel System Locations, 8.5/12 kW

Procedure to convert from NG to LP, 8.5/12 kW

1. Place the generator set master switch in the OFF
position.

2. Disconnect the power to the battery charger.

3. Disconnect the generator set engine starting
battery, negative (--) lead first.

3

6. Remove the hose fitting from the natural gas outlet
port in the fuel block. See Figure 1-22.

7. Remove the plug from the LP port in the fuel block.
See Figure 1-22. Clean the plug with a dry cloth or
brush, apply fresh pipe sealant, and install the plug
into the natural gas outlet port.

8. Clean the hose fitting with a dry cloth or brush,
apply fresh pipe sealant to the threads, and install
the fitting into the LP port.

Note: Do not adjust the fuel metering valves.

9. Slide the hose onto the hose fitting and secure it
with the clamp.

TP-6514 9/09 25Section 1 Installation

10. For the 12 kW: Disconnect the DSAI leads for LP.
See Figure 1-23 and Figure 1-24.

Fuel DSAI Leads

Natural Gas Connect

LP Disconnect

Figure 1-23 DSAI Connection,12/17/18 kW Models

tp6195

1.7.2 Fuel Conversion, 17/18 kW

For LP vapor fuel, an orifice is used in the fuel line. The
unit is typically shipped set up for natural gas, with the
loose orifice tied near the fuel line. To convert to LP
vapor, install the orifice and disconnect the spark
advance leads as described below. See Figure 1-25 for
the fuel system component locations.

1

2

3

4

Fuel System Detail

5

2

6

3

4

1

1. DSAI leads (12 kW model only)

Figure 1-24 Digital Spark Advance Module Leads

(located in generator set air intake area)

11. Connect and turn on the new fuel supply.

12. Check that the generator set master switch is in the
OFF position.

13. Reconnect the generator set engine starting
battery leads, negative (--) lead last.

14. Reconnect power to the battery charger.

15. Start the generator set by moving the generator set
master switch to the RUN position.

16. Check for leaks using a gas leak detector.

17. Run the generator set and check the operation.
Use the controller to adjust the output and stability if
necessary. See Section 1.14 for instructions.

18. Move the generator set master switch to the OFF/
RESET position to shut down the generator set.

GM51561A-D

1. Hose fitting (LP orifice fits inside; see Figure 1-26)

2. Regulator

3. Fuel valve

4. Fuel inlet, 1/2 in. NPT female

5. Fuel hose with clamp

6. DSAI connector location (see Figure 1-27)

Figure 1-25 Fuel System Components, 17/18 kW

To convert from LP vapor to natural gas, follow the same
fuel conversion procedure, moving the hose fitting to the
natural gas port and plugging the LP port. For the 12 kW
model, connect the DSAI leads for natural gas. See
Figure 1-23 and Figure 1-24.

TP-6514 9/0926 Section 1 Installation

Procedure to Convert from NG to LP, 17/18 kW

1. Place the generator set master switch in the OFF
position.

2. Disconnect the power to the battery charger.

3. Disconnect the generator set engine starting
battery, negative (--) lead first.

4. Turn off the fuel supply.

5. Remove the hose clamp and fuel hose from the
hose fitting. See Figure 1-25.

6. Insert the orifice into the hose fitting. See
Figure 1-26.

7. Slide the hose onto the hose fitting and secure it
with the clamp.

8. Disconnect digital spark-advance module (DSAI)
leads 65 and N5 for LP. (Connect the leads for
natural gas.) See Figure 1-27 and Figure 1-28.

1

1. LP orifice (remove for natural gas)

2. Hose fitting

3. Regulator

Figure 1-26 LP Fuel Orifice, 17/18 kW

2

3

tp6514

9. Connect and turn on the new fuel supply.

10. Check that the generator set master switch is in the
OFF position.

11. Reconnect the generator set engine starting
battery leads, negative (--) lead last.

12. Reconnect power to the battery charger.

13. Start the generator set by moving the generator set
master switch to the RUN position.

14. Check for leaks using a gas leak detector.

15. Run the generator set and check the operation.
Use the controller to adjust the output and stability if
necessary. See Section 1.14 for instructions.

16. Move the generator set master switch to the OFF/
RESET position to shut down the generator set.

To convert from LP vapor to natural gas, remove the fuel
orifice and connect the DSAI leads together.

1

tp6514

1. DSAI leads 65 and N5:
connect for natural gas, disconnect for LP.

Figure 1-27 Digital Spark Advance Ignition (DSAI)

Leads 65 and N5, 17/18 kW

Fuel DSAI Leads 65 and N5

Natural Gas Connect

LP Disconnect

Figure 1-28 DSAI Connections

TP-6514 9/09 27Section 1 Installation

1.8 Electrical Connections

WARNING

Refer to the transfer switch specifications and the decal
below the terminal block for the cable size range for
each connection. Route AC leads through flexible
conduit. Ensure that the leads and conduit do not
interfere with the operation of the generator set or
obstruct the service areas.

Hazardous voltage.
Backfeed to the utility system can
cause property damage, severe
injury, or death.

If the generator set is used for
standby power, install an automatic
transfer switch to prevent inadvertent
interconnection of standby and
normal sources of supply.

Grounding electrical equipment. Hazardous voltage can
cause severe injury or death. Electrocution is possible

whenever electricity is present. Ensure you comply with all
applicable codes and standards. Electrically ground the
generator set, transfer switch, and related equipment and
electrical circuits. Turn off the main circuit breakers of all
power sources before servicing the equipment. Never contact
electrical leads or appliances when standing in water or on wet
ground because these conditions increase the risk of
electrocution.

Electrical backfeed to the utility. Hazardous backfeed
voltage can cause severe injury or death. Install a transfer

switch in standby power installations to prevent the connection
of standby and other sources of power. Electrical backfeed
into a utility electrical system can cause severe injury or death
to utility personnel working on power lines.

Field Connections to the Terminal Block,
RES Models

See Figure 1 or Figure 2 in the Introduction section of
this manual for the terminal block location. See
Figure 1-29 for terminal block details. Leads have been
factory-installed from the junction box to the terminal
block for easy field wiring. Make field connections to the
terminal block. Refer to the terminal block decal for
connections and cable sizes.

1. Drill holes for the conduit fittings. See the
dimension drawing for each model for the
recommended electrical inlet locations. Feed the
cables through the openings.

2. Connect the leads from the transfer switch
emergency source lugs to the L1 and L2
connections on the generator set terminal block.

3. Connect the neutral (L0) and ground (GRD) leads
from the ATS and the main panel to the
corresponding connection points on the terminal
block. See Section 1.8.3, Grounding.

NOTICE

Canadian installations only. For standby service connect
the output of the generator set to a suitably rated transfer
switch in accordance with Canadian Electrical Code, Part 1.

Have an authorized distributor/dealer or a licensed
electrician make the following electrical connections.
The electrical installation must comply with the National
Electrical Code (NEC) and all applicable local codes.
Canadian installations must comply with the Canadian
Electrical Code (CEC) and applicable local codes.

Ground the generator set from the GRD terminal inside
controller compartment according to applicable codes.

1.8.1 AC Connections

The generator set is equipped with a field-connection
terminal block located in the air inlet area near the
junction box. Refer to the decal near the terminal block
for connections. Also see Section 2, Wiring Diagrams.

Note: Sample decal shown. See the decal on the generator

set for wire gauge.

GM58022
GM54820

Figure 1-29 Field-Connection Terminal Block, typical

RES Models

TP-6514 9/0928 Section 1 Installation

4. Connect the engine start leads from the automatic
transfer switch or remote start switch to terminals 3
and 4 on the terminal block. See Section 1.8.2.

5. The terminal block kit includes 120 VAC
receptacles for the battery charger and optional
carburetor heater. Connect utility power to the
terminal block as shown. Connect to a circuit that is
supplied by the generator set if utility power is lost.
See Section 1.5 for more information about the
120 VAC power requirement.

1

Field Connections, TRES (3-phase) Models

See Figure 3 in the Introduction section of this manual
for the terminal block location. See Figure 1-31 for
terminal block details. Leads have been factory­installed from the junction box to the terminal block for
easy field wiring. Make field connections to the terminal
block. Refer to the decal near the terminal block for
connections.

1. Remove the cable inlet cover. See Figure 1-30.

2. Drill holes for the cable fittings into the cable inlet
cover and reinstall the cover.

3. Remove the circuit breaker cover.

4. Feed the cables through the openings in the cover
and connect the cables. Refer to Figure 1-31 and
the decal near the terminal block. See Section

1.8.3, Grounding, and Section 2, Wiring Diagrams.

5. Connect the engine start leads from the automatic
transfer switch or remote start switch to terminals 3
and 4 on the terminal block. See Section 1.8.2.

2

1. Terminal block and circuit breaker cover

2. Cable inlet cover

Figure 1-30 TRES (3-phase) Models

Note: See the label near the terminal block for

connections.
N5 = Mains Neutral
M5 = Mains Live

4

3

2

1

5

6

GM66010

6. Connect utility power (for the battery charger and
carburetor heater) to the terminal block as shown
on the label. Connect to a circuit that is supplied by
the generator set if utility power is lost. See Section

1.5 for more information about the utility power
requirement.

GM66066

7. Verify that the cables are secure and there is no
stress on the connections.

8. Replace the circuit breaker cover.

1. Engine start connection

2. Utility ground

3. Utility 230V power connection (see label)

4. Auxiliary contact (factory connection)

5. Load connections

6. Ground (earth)

Figure 1-31 Field Connection, TRES (3-phase)

Models

TP-6514 9/09 29Section 1 Installation

1.8.2 Remote Start Connection

Connect terminals 3 and 4 to the automatic transfer
switch’s engine start terminals or to an optional remote
start/stop switch. Route the engine start leads through
separate conduit from the AC power and load leads.

type of transfer switch used in the application determine
the grounding of the neutral at the generator. NEC 2002
Section 250.20 is one example that has a very good
explanation of the neutral grounding requirements for
generators.

1.8.3 Grounding

Ground the generator set. The grounding method must
comply with NEC and local codes. Connect the
grounding strap to the generator set ground lug,
terminal GND inside the controller compartment.

Generator sets are shipped with the generator neutral
attached to the generator in the junction box. At
installation, the neutral can be grounded at the
generator set or lifted from the ground stud and isolated
if the installation requires an ungrounded neutral
connection at the generator. The generator set will
operate properly with the neutral either bonded to
ground or isolated from ground at the generator.

Various regulations and site configurations including the
National Electrical Code (NEC), local codes, and the

1.8.4 Battery Charger

A battery charger is factory-installed in the battery
compartment to keep the starting battery fully charged.
The battery charger’s DC leads are factory-connected
to the battery. Supply power to the generator set for the
battery charger and carburetor heater as described in
Sections 1.5 and 1.8.1.

RES models: Plug the battery charger’s power cord into
the receptacle on the bottom of the controller junction
box.

TRES (3-phase) models: The battery charger’s power
cord is factory-connected.

Refer to the generator set operation manual for battery
charger operation information.

TP-6514 9/0930 Section 1 Installation

1.9 Battery

WARNING

Sulfuric acid in batteries.
Can cause severe injury or death.

Wear protective goggles and
clothing. Battery acid may cause
blindness and burn skin.

WARNING

Explosion.
Can cause severe injury or death.
Relays in the battery charger
cause arcs or sparks.

Locate the battery in a well-ventilated
area. Isolate the battery charger from
explosive fumes.

Battery electrolyte is a diluted sulfuric acid. Battery acid
can cause severe injury or death. Battery acid can cause

blindness and burn skin. Always wear splashproof safety
goggles, rubber gloves, and boots when servicing the battery.
Do not open a sealed battery or mutilate the battery case. If
battery acid splashes in the eyes or on the skin, immediately
flush the affected area for 15 minutes with large quantities of
clean water. Seek immediate medical aid in the case of eye
contact. Never add acid to a battery after placing the battery in
service, as this may result in hazardous spattering of battery
acid.

Battery gases. Explosion can cause severe injury or
death. Battery gases can cause an explosion. Do not smoke

or permit flames or sparks to occur near a battery at any time,
particularly when it is charging. Do not dispose of a battery in a
fire. To prevent burns and sparks that could cause an
explosion, avoid touching the battery terminals with tools or
other metal objects. Remove all jewelry before servicing the
equipment. Discharge static electricity from your body before
touching batteries by first touching a grounded metal surface
away from the battery. To avoid sparks, do not disturb the
battery charger connections while the battery is charging.
Always turn the battery charger off before disconnecting the
battery connections. Ventilate the compartments containing
batteries to prevent accumulation of explosive gases.

Battery short circuits. Explosion can cause severe injury
or death. Short circuits can cause bodily injury and/or

equipment damage. Disconnect the battery before generator
set installation or maintenance. Remove all jewelry before
servicing the equipment. Use tools with insulated handles.
Remove the negative (--) lead first when disconnecting the
battery. Reconnect the negative (--) lead last when
reconnecting the battery. Never connect the negative (--)
battery cable to the positive (+) connection terminal of the
starter solenoid. Do not test the battery condition by shorting
the terminals together.

Connecting the battery and the battery charger.
Hazardous voltage can cause severe injury or death.

Reconnect the battery correctly, positive to positive and
negative to negative, to avoid electrical shock and damage to
the battery charger and battery(ies). Have a qualified
electrician install the battery(ies).

Use a 12-volt battery with a minimum rating of 525 cold
cranking amps at 0_F. The generator set uses a
negative ground with a 12-volt engine electrical system.
See Figure 1-32 for battery connections. Make sure
that the battery is correctly connected and the terminals
are tight.

1

2

Battery acid cleanup. Battery acid can cause severe
injury or death. Battery acid is electrically conductive and

corrosive. Add 500 g (1 lb.) of bicarbonate of soda (baking
soda) to a container with 4 L (1 gal.) of water and mix the
neutralizing solution. Pour the neutralizing solution on the
spilled battery acid and continue to add the neutralizing
solution to the spilled battery acid until all evidence of a
chemical reaction (foaming) has ceased. Flush the resulting
liquid with water and dry the area.

TP-6514 9/09 31Section 1 Installation

EZ-273000-J

1. To positive (+) terminal on starter solenoid.

2. To ground (--) terminal on or near starter motor.

Figure 1-32 12-Volt Engine Electrical System Single

Starter Motor Typical Battery Connection

Note: The generator set will not start and circuit board

damage may occur if the battery is connected in
reverse.

Figure 1-33 shows the location of the engine starting
battery. Standard battery cables provide easy
connection to the battery. Use the following procedure
to install and connect the battery.

1

If there are no accessories, proceed to Section 1.11,
Prestart Installation Check.

1.10.1 Common Fault and Auxiliary Run
Relay Board

The optional relay board provides two additional relays
to control customer-provided equipment:

D Common fault relay, energized on a fault.

D Auxiliary run relay, energized when the generator set

is running.

ADV-7341A-B

1. Engine starting battery location

Figure 1-33 Battery Location, Air Intake End

Battery Installation Procedure

1. Ensure that the starting battery is fully charged
before placing the battery in service.

2. Clean the battery posts and/or adapters if
necessary.

3. Install the battery post adapters, if needed.

4. Place the battery in the housing.

5. Verify that the controller master switch is in the OFF
position.

6. Connect the positive (+) lead to the engine starting
battery.

7. Connect the negative (--) lead to the engine starting
battery.

See Figure 1-34 for the relay board location.

1

17/18 kW

2

8.5/12 kW

1

GM53102

Refer to the generator set operation manual and the
battery manufacturer’s instructions for battery
maintenance instructions.

1.10 Accessories

Have accessories installed by an authorized distributor/
dealer or a licensed electrician. Follow the installation
instructions provided with each kit. Use separate conduit
for AC and DC leads to reduce the possibility of electrical
interference. Verify that the leads and conduit do not
interfere with the operation of the generator set or
obstruct the service areas. Verify that the electrical
installation complies with the National Electrical Code
(NEC) and all applicable local codes. See Section 2,
Wiring Diagrams, for more information regarding
generator set electrical connections.

2

1. Relay board 2. Controller junction box

Figure 1-34 Optional Relay Board Location

TP-6514 9/0932 Section 1 Installation

Connect customer equipment to terminal strip TB1 on
the relay board, following the markings on the board.
Connect to each relay’s normally open or normally
closed contacts depending on the application. Use size
14 AWG maximum wire for connections to TB1. See
Figure 1-35 and Figure 1-36.

1.10.2 Carburetor Heater

An optional carburetor heater is recommended for
improved cold starting in locations where the ambient
temperature drops below 0_C(32_F). The carburetor
heater prevents condensation and carburetor icing. The
heater turns on when the temperature at the thermostat
falls below approximately 4_C(40_F) and turns off when
the temperature rises above approximately 16_C
(60_F). See Figure 1-37 through Figure 1-39.

The heater thermostat is installed in the cord.
Figure 1-40 shows the location of the thermostat on the
power cord. The heater power cord and thermostat are
located in the generator set housing air intake area/
battery compartment. See Figure 1-33.

Note: Do not place the heater thermostat inside the

generator set engine compartment. The
thermostat must be exposed to the ambient air.

The heater requires a continuous source of power.

1

1. Connect customer equipment to TB1, 14 AWG max.

GM51403

Figure 1-35 Relay Board Connections

Terminal Label Description

COMMON FAULT NC Common fault relay normally

closed contact.
Opens on a fault.

COMMON FAULT COM Common fault relay common

COMMON FAULT NO Common fault relay normally

open contact.
Closes on a fault.

AUX RUN NC Auxiliary run relay normally

closed contact.
Open when generator set is
running.

AUX RUN COM Auxiliary run relay common

AUX RUN NO Auxiliary run relay normally

open contact.
Closed when generator set is
running.

Note: Use maximum 14 AWG wire for TB1 connections.

Single-phase (RES) models: Plug the carburetor heater
into an outlet that supplies continuous 120 VAC power.

Three-phase (TRES) models: The carburetor heater
power is factory-connected to the battery charger.

1

2

Figure 1-36 Common Fault and Run Relay Board

Harness Connections

TP-6514 9/09 33Section 1 Installation

tp6195

1. Carburetor heater (air cleaner removed to show heater)

2. Carburetor heater power cord

Figure 1-37 8.5/12 kW Carburetor Heater Location

1

2

4

1

GM57969

1. Thermostat

2. Bulkhead opening for carburetor heater access

3. Carburetor heater cord with thermostat

4. 120 VAC receptacles for carburetor heater and battery
charger RES models)

Figure 1-38 17/18 kW Carburetor Heater Location

(air intake side of generator set)

1

2

8.5/12 kW Carburetor Heater

1

2

3

tp6514

1. Carburetor heater location

Figure 1-39 17/18 kW Carburetor Heater Location on

Engine (bulkhead removed to show
heater location)

3

GM19463

3

1. Power plug (single-phase type
shown)

Figure 1-40 Carburetor Heaters

17/18 kW Carburetor Heater

2. Thermostat 3. Heater

GM57968

TP-6514 9/0934 Section 1 Installation

1.11 Prestart Installation Check

1.13 Controller Configuration

Review the entire installation section. Inspect all wiring
and connections to verify that the generator set is ready
for operation. Check all items in the following Prestart
Checklist.

Prestart Checklist

Air Cleaner. Check that a clean air cleaner element is

installed to prevent unfiltered air from entering the
engine. See the generator set operation manual for
instructions.

Air Inlets. Check for clean and unobstructed air inlets.

Battery. Check for tight battery connections. Consult

the battery manufacturer’s instructions regarding
battery care and maintenance.

Exhaust System. Check for exhaust leaks and
blockages. Check the muffler condition.

D Inspect the exhaust system components for cracks,

leaks, and corrosion. Check for tight exhaust system
connections.

D Check for corroded or broken metal parts and replace

them as needed.

D Check that the exhaust outlet is unobstructed.

Oil Level. Maintain the oil level at or near, not over, the
full mark on the dipstick.

Operating Area. Check for obstructions that could
block the flow of cooling air. Keep the air intake area
clean. Do not leave rags, tools, or debris on or near the
generator set.

1.13.1 System Parameters

The controller configuration for each generator model is
set at the factory and should not normally require
changes. The controller’s configuration mode allows
adjustment of the system parameters listed in this
section. Use the instructions in this section to check the
configuration after installation and change them to
match the settings shown in Figure 1-41, if necessary.

Parameter Setting Definition

Unit’s system
voltage and
frequency

Engine type Ec00 8.5/12 kW

Communication
setting *

* Controller application code version 1.13 or higher.
[ Default setting for application code version 1.13 or higher.

Figure 1-41 Controller Configuration Parameters

Uu01 Single phase, 60 Hz,

120/240 VAC

Uu03 Three-phase, 50 Hz,

230/400 VAC (TRES)

Uu06 Single phase, 50 Hz,

115/230 VAC

Ec12 17/18 kW

Cn00 No J1939 communication.

Sleep mode enabled
(48-hour power down in
AUTO).

Cn01 [ J1939 communication

enabled. Sleep mode
disabled (no power down in
AUTO).

1.12 Startup Notification

Complete the startup and installation checklists
supplied with the startup notification form. Complete
and sign the startup notification form and submit copies
to Kohler Co. and the distributor/dealer as instructed on
the form.

Standby systems not registered within 60 days of
startup are automatically registered using the
manufacturer’s ship date as the startup date.

TP-6514 9/09 35Section 1 Installation

Follow the instructions in Figure 1-42 to enter the
configuration mode while the engine is not running and
then step through the following parameters. Use the up
(

∧) and down (∨) arrow buttons to select the appropriate

setting for the application.

The controller will automatically exit the configuration
mode without saving any changes after about 1 minute
if no buttons are pressed. Start the configuration
procedure over again from the beginning if the controller
exits the configuration mode before the settings have
been saved.

Communication/Sleep Mode Setting (Cn). (Available
on controllers with application code version 1.13 or
higher.) The communication setting enables or disables
J1939 communication, and also disables or enables the
sleep mode. When J1939 communication is enabled,
the sleep mode is turned off to allow uninterrupted
communication with a personal computer running
remote monitoring software. If remote monitoring is not
used, the communication can be turned off, enabling the
sleep mode which causes the controller to power down
after 48 hours of inactivity. The generator set master
switch must be in AUTO for the sleep mode to function.

Note: Be sure to save your settings before exiting the

configuration mode. The controller reverts to the
last saved settings when the master switch is
moved to the OFF/RESET position.

Voltage/frequency setting (Uu). Select the system
voltage and frequency from the table in Figure 1-41.

Note: The Uu parameter sets the system’s rated

voltage and frequency. To adjust the output
(measured) voltage and frequency, see Section

1.14, Voltage and Frequency Adjustments.

Engine configuration (Ec). The engine configuration
must match the generator set engine type.

The default setting for controllers with application code
version 1.13 or higher is Cn01, communication on/sleep
mode off. Controllers with earlier application code
versions have communication disabled and the sleep
mode enabled. The Cn setting is not adjustable on
these earlier versions.

1.13.2 Application Code Version

To check the application code version number, HOLD
the select button while moving the generator set master
switch to RUN. (The engine will not start when the select
button is held.) Wait about 5 seconds for the application
code version number to appear on the display. See
Figure 1-42.

TP-6514 9/0936 Section 1 Installation

Controller Configuration Mode:

Hold the Select button:

Move the generator set master switch to the RUN
position. (The generator set engine will not start.)

Wait about 5 seconds until the display shows the
program version number. (The number may be
different than the one shown here.)

Press the down arrow key and then the up arrow
key 3 times to enter the configuration mode.
(This is the controller “password.”)

Now release the Select button.

Press:

or

To enter setting and step to the next parameter, engine type Ec.

To change the voltage/frequency setting,
if necessary. See Figure 1-41.

Display:

. 0

v 1 1 3

U u 0 1

U u 0 x

Press:

OR

or

To enter setting and step to the next parameter, communication
setting Cn.

or

To enter setting and step to SAVE.

To SAVE CHANGES.

To DISCARD CHANGES without saving.

“Yes” or “no” flashes when the up or down arrow is pressed and
then the controller exits the configuration mode. The display
returns to the runtime hours.

To change the engine type,
if necessary.

To change the communication setting, if
necessary. See Figure 1-41.

8.5/12 kW
17/18 kW

E c 0 0
E c 1 2

C n 0 x

S A V E

Y E S

n o

x x xx

Now move the master switch to OFF/RESET.

Note: Shaded boxes show which number in the controller display changes when the up or down arrow

keyispressed. X in the runtime hours display above denotes any number from 0 to 9.

Figure 1-42 Configuration Mode (system voltage/frequency, engine type, and communication parameters)

TP-6514 9/09 37Section 1 Installation

1.14 Voltage and Frequency
Adjustments

WARNING

Hazardous voltage.
Can cause severe injury or death.

Moving parts.

Changes in voltage and speed adjustments are lost if
not saved before the generator set shuts down. The
generator set continues to run with the new settings until
it shuts down but then reverts to the previous settings at
the next startup if the changes have not been saved.

1.14.1 Voltage Adjustment

Note: Refer to the flowcharts in Figure 1-46 through

Figure 1-48 during the following procedure.

Operate the generator set only when
all guards and electrical enclosures
areinplace.

Short circuits. Hazardous voltage/current can cause
severe injury or death. Short circuits can cause bodily injury

and/or equipment damage. Do not contact electrical
connections with tools or jewelry while making adjustments or
repairs. Remove all jewelry before servicing the equipment.

The controller’s adjustment mode allows adjustment of
the output voltage and frequency, if necessary. Have
adjustments performed by an authorized distributor/
dealer or service technician.

Note: A digital multimeter that measures voltage and

frequency is required for these adjustments.

Use a digital multimeter to check the output voltage and
frequency. If output voltage or frequency is not within
specifications, use the ADC controller to adjust the
output voltage and engine speed (frequency) while the
generator set is running. See Figure 1-43. The
flowcharts in Figure 1-46 through Figure 1-48 outline
the adjustment procedures.

Voltage Adjustment Procedure

1. With the generator set off, connect a digital
multimeter to the output leads or an electrical outlet
on the load side of the generator set. Set the meter
to measure AC voltage.

2. Start the generator set by moving the generator set
master switch to the RUN position.

3. Use the ADC controller to adjust the voltage
(parameter 1P) until the output voltage reaches the
desired value. Refer to the flowcharts in
Figure 1-46 through Figure 1-48 for instructions to
adjust the output voltage. See Figure 1-44 for the
approximate change in voltage per step.

Voltage Change per

Measured

Voltage, VAC

85--132 1P00--99 5 0.5

180--251 1P00--99 7 0.7

ADC

Display

Step, VAC

Coarse Fine

Figure 1-44 Voltage Adjustment (approximate)

Note: Be sure to save your changes as instructed in

Figure 1-48 before exiting configuration mode.

1

1. Select button 2. Arrow buttons

2

tp6514

Figure 1-43 Advanced Digital Control

4. Adjust the voltage stability (gain, parameter 2P) to
minimize light flicker.

5. Readjust the voltage, if necessary.

6. Set the multimeter to measure frequency.

7. Adjust the engine speed to the cut-in frequency
shown in Figure 1-45 by adjusting the engine
governor speed (parameter 4P).

Frequency Cut-In Frequency

60 Hz 57.5 Hz

50 Hz 47.5 Hz

Figure 1-45 Cut-In Frequencies

TP-6514 9/0938 Section 1 Installation

8. Adjust the volts/Hz (parameter 3P) until the voltage
level measured by the multimeter begins to drop.
When the volts/Hz is set correctly, the generator
(as load is applied) attempts to maintain normal
output until the engine speed drops below the
cut-in frequency set in step 7.

9. Reset the engine speed to the operating frequency
(50 or 60 Hz) by adjusting the engine governor
speed (parameter 4P).

10. Readjust the voltage stability (gain, parameter 2P),
if necessary.

11. Readjust the voltage (parameter 1P), if necessary.

12. Save settings. See Figure 1-48.

Frequency Adjustment Procedure

Note: Refer to the flowcharts in Figure 1-46 through

Figure 1-48 during the following procedure.

1. Attach a frequency meter to the AC output leads or
an electrical outlet on the load side of the generator
set.

2. Start and run the generator set until it reaches
normal operating temperature (at least 10 minutes).

3. Adjust electronic governor speed (parameter 4P)
to obtain a frequency reading of 60 Hz (or 50 Hz if
appropriate). Each step changes the engine speed
about 3.6 rpm, which changes the output
frequency about 0.06 Hz.

13. Stop the generator set.

1.14.2 Frequency Adjustment

The engine speed determines the generator output
frequency; 60 Hz units operate at 3600 rpm and 50 Hz
units run at 3000 rpm. Adjust the engine governor
speed and gain to set the output frequency and stability
using the following procedure.

Note: Refer to the flowcharts in Figure 1-46 through

Figure 1-48 during the following procedure.

4. Check stability with the generator set running and
with no load applied. If the generator set speed is
unstable, hunts, or surges, adjust the governor
stability (gain, parameter 5P) until the generator
set becomes stable with no hunting or surging.
(Increasing the gain slows the governor response.)

5. Check the frequency reading. Repeat steps 3 and
4 if necessary to obtain the rated frequency and
stable operation.

6. Save settings. See Figure 1-48.

TP-6514 9/09 39Section 1 Installation

Output Voltage and Frequency Adjustment M ode:

Move the generator set master switch to the RUN position. The generator set
engine starts and the controller display shows the engine runtime hours.

Display :*

x x x x

Hold:

The controller is now in the voltage coarse adjustment mode.

Press:

Wait about 5 seconds until the display changes from runtime hours
to the program version number.

Press the down arrow key and then the up arrow key 3 times to enter the
adjustment mode. (This is the controller “password.”)

or

or

To raise or lower the voltage in large increments
(approximately 5--7 volts per step). (Parameter 1P)

To enter fine voltage adjustment mode.

To raise or lower the voltage in smaller increments
(approximately 0.5--0.7 volts per step). (Parameter 1P)

x x

x

.

1 P

1 P

x x

x x

1 P x x

To enter coarse voltage stability (gain) adjustment mode.

2 P

or

To raise or lower the voltage stability (gain) in large
increments. (Parameter 2P)

To enter fine voltage stability (gain) adjustment mode.

2 P

or

or

Continued on Figure 1-47.

* Shaded boxes show which character in the controller display changes for each adjustment. X in the

examples above denotes any number from 0 to 9. The actual values may vary from model-to-model.

To raise or lower the voltage stability (gain) in smaller
increments. (Parameter 2P)

To enter volts/Hz adjustment mode.
(Parameter 3P)

To raise or lower the volts/Hz: 00=low; 09= high

3 P x

x x

xx

x

TP6196

Figure 1-46 Output Voltage and Frequency Adjustments

TP-6514 9/0940 Section 1 Installation

Continued from Figure 1-46:

Press:

Display:*

or

or

or

To enter engine governor speed coarse adjustment
mode. (Parameter 4P)

To raise or lower the engine speed in large
increments.

To enter engine governor speed fine
adjustment mode. (Parameter 4P)

To raise or lower the engine speed in smaller
increments.

To enter engine governor stability (gain) coarse
adjustment mode. (Parameter 5P)

To raise or lower the engine governor stability (gain)
in large increments.

To enter engine governor stability (gain) fine
adjustment mode. (Parameter 5P)

4 P

4 P

5 P

5 P

x x

xx

x x

xx

or

Note: Be sure to save your settings before exiting the configuration mode. The controller reverts to

the last saved settings when the master switch is moved to the OFF/RESET position.

* Shaded boxes show which character in the controller display changes for each adjustment. X in the

examples above denotes any number from 0 to 9. The actual values may vary from model-to-model.

Figure 1-47 Output Voltage and Frequency Adjustments, Continued

To raise or lower the engine governor stability (gain)
in smaller increments.

To enter SAVE mode. Go to Figure 1-48.

S A V E

TP-6514 9/09 41Section 1 Installation

There are 3 options when the display says SAVE:
Press:

S A V E

To return to the first parameter, coarse voltage adjustment, to check
or change settings before saving. See Figure 1-46.

or

To save changes.

or

To discard changes without saving.

“Yes”or “no” flashes when the up or down arrow is pressed and then the
controller exits the configuration mode. The display returns to the
runtime hours.

Now move the master switch to OFF/RESET.

Figure 1-48 Save Mode

1 P

x x

Y E S

n o

x x x x

TP-6514 9/0942 Section 1 Installation

Section 2 Wiring Diagrams

Figure 2-1 lists the wiring diagram numbers and locations.

Wiring Diagram Description Drawing Number Page

8.5/12RES Schematic Diagram ADV-7325 44

8.5/12RES Point-to-Point Wiring Diagram GM51414 45

17/18RES Schematic Diagram ADV-7353 46

17/18RES Point-to-Point Wiring Diagram GM52541 47

12TRES (3-phase) Schematic Diagram ADV-7623 48

12TRES (3-phase) Point-to-Point Wiring Diagram GM63546 49

18TRES (3-phase) Schematic Diagram ADV-7637 50

18TRES (3-phase) Point-to-Point Wiring Diagram GM65661 51

Figure 2-1 Wiring Diagrams and Schematics

TP-6514 9/09 43Section 2 Wiring Diagrams

Figure 2-2 Schematic Diagram, Single Phase, 8.5/12RES, ADV-7325-D

-

TP-6514 9/0944 Section 2 Wiring Diagrams

Figure 2-3 Point-to-Point Wiring Diagram, Single Phase, 8.5/12RES, GM51414-C

TP-6514 9/09 45Section 2 Wiring Diagrams

-

Figure 2-4 Schematic Diagram, Single Phase, 17/18RES, ADV-7353-F

-

TP-6514 9/0946 Section 2 Wiring Diagrams

Figure 2-5 Point-to-Point Wiring Diagram, Single Phase, 17/18RES, GM52541-E

TP-6514 9/09 47Section 2 Wiring Diagrams

Figure 2-6 Schematic Diagram, Three-Phase, 12TRES, ADV-7623 Sheet 4

TP-6514 9/0948 Section 2 Wiring Diagrams

Figure 2-7 Point-to-Point Wiring Diagram, Three-Phase, 12TRES, GM63546, Sheet 3

TP-6514 9/09 49Section 2 Wiring Diagrams

Figure 2-8 Schematic Diagram, Three-Phase, 18TRES, ADV-7637, Sheet 3

TP-6514 9/0950 Section 2 Wiring Diagrams

Figure 2-9 Point-toPoint Wiring Diagram, Three-Phase, 18TRES, GM65661, Sheet 3

TP-6514 9/09 51Section 2 Wiring Diagrams

Notes

TP-6514 9/0952 Section 2 Wiring Diagrams

Appendix A Abbreviations

The following list contains abbreviations that may appear in this publication.

A, amp ampere
ABDC after bottom dead center
AC alternating current
A/D analog to digital
ADC advanced digital control;

adj. adjust, adjustment
ADV advertising dimensional

Ah amp-hour
AHWT anticipatory high water

AISI American Iron and Steel

ALOP anticipatory low oil pressure
alt. alternator
Al aluminum
ANSI American National Standards

AO anticipatory only
APDC Air Pollution Control District
API American Petroleum Institute
approx. approximate, approximately
APU Auxiliary Power Unit
AQMD Air Quality Management District
AR as required, as requested
AS as supplied, as stated, as

ASE American Society of Engineers
ASME American Society of

assy. assembly
ASTM American Society for T esting

ATDC after top dead center
ATS automatic transfer switch
auto. automatic
aux. auxiliary
avg. average
AVR automatic voltage regulator
AWG American Wire Gauge
AWM appliance wiring material
bat. battery
BBDC before bottom dead center
BC battery charger, battery

BCA battery charging alternator
BCI Battery Council International
BDC before dead center
BHP brake horsepower
blk. black (paint color), block

blk. htr. block heater
BMEP brake mean effective pressure
bps bits per second
br. brass
BTDC before top dead center
Btu British thermal unit
Btu/min. British thermal units per minute
C Celsius, centigrade
cal. calorie
CAN controller area network
CARB California Air Resources Board
CAT5 Category 5 (network cable)
CB circuit breaker
CC crank cycle
cc cubic centimeter
CCA cold cranking amps
ccw. counterclockwise
CEC Canadian Electrical Code
cert. certificate, certification, certified
cfh cubic feet per hour

analog to digital converter

drawing

temperature

Institute

Institute (formerly American
Standards Association, ASA)

suggested

Mechanical Engineers

Materials

charging

(engine)

cfm cubic feet per minute
CG center of gravity
CID cubic inch displacement
CL centerline
cm centimeter
CMOS complementary metal oxide

com communications (port)
coml commercial
Coml/Rec Commercial/Recreational
conn. connection
cont. continued
CPVC chlorinated polyvinyl chloride
crit. critical
CSA Canadian Standards

CT current transformer
Cu copper
cUL Canadian Underwriter’s

CUL Canadian Underwriter’s

cu. in. cubic inch
cw. clockwise
CWC city water-cooled
cyl. cylinder
D/A digital to analog
DAC digital to analog converter
dB decibel
dB(A) decibel (A weighted)
DC direct current
DCR direct current resistance
deg., ° degree
dept. department
dia. diameter
DI/EO dual inlet/end outlet
DIN Deutsches Institut fur Normung

DIP dual inline package
DPDT double-pole, double-throw
DPST double-pole, single-throw
DS disconnect switch
DVR digital voltage regulator

2

E

PROM, EEPROM

E, emer. emergency (power source)
ECM electronic control module,

EDI electronic data interchange
EFR emergency frequency relay
e.g. for example (exempli gratia)
EG electronic governor
EGSA Electrical Generating Systems

EIA Electronic Industries

EI/EO end inlet/end outlet
EMI electromagnetic interference
emiss. emission
eng. engine
EPA Environmental Protection

EPS emergency power system
ER emergency relay
ES engineering special,

ESD electrostatic discharge
est. estimated
E-Stop emergency stop
etc. et cetera (and so forth)

substrate (semiconductor)

Association

Laboratories

Laboratories

e. V. (also Deutsche Industrie
Normenausschuss)

electrically-erasable
programmable read-only
memory

engine control module

Association

Association

Agency

engineered special

exh. exhaust
ext. external
F Fahrenheit, female
FHM flat head machine (screw)
fl. oz. fluid ounce
flex. flexible
freq. frequency
FS full scale
ft. foot, feet
ft. lb. foot pounds (torque)
ft./min. feet per minute
ftp file transfer protocol
ggram
ga. gauge (meters, wire size)
gal. gallon
gen. generator
genset generator set
GFI ground fault interrupter

GND,
gov. governor
gph gallons per hour
gpm gallons per minute
gr. grade, gross
GRD equipment ground
gr. wt. gross weight
H x W x D height by width by depth
HC hex cap
HCHT high cylinder head temperature
HD heavy duty
HET high exhaust temp., high

hex hexagon
Hg mercury (element)
HH hex head
HHC hex head cap
HP horsepower
hr. hour
HS heat shrink
hsg. housing
HVAC heating, ventilation, and air

HWT high water temperature
Hz hertz (cycles per second)
IBC International Building Code
IC integrated circuit
ID inside diameter, identification
IEC International Electrotechnical

IEEE Institute of Electrical and

IMS improved motor starting
in. inch
in. H
in. Hg inches of mercury
in. lb. inch pounds
Inc. incorporated
ind. industrial
int. internal
int./ext. internal/external
I/O input/output
IP internet protocol
ISO International Organization for

J joule
JIS Japanese Industry Standard
k kilo (1000)
K kelvin
kA kiloampere
KB kilobyte (2
KBus Kohler communication protocol
kg kilogram

ground

engine temp.

conditioning

Commission

Electronics Engineers

O inches of water

2

Standardization

10

bytes)

TP-6514 9/09 Appendix 53

2

kg/cm

kgm kilogram-meter
kg/m

kilograms per square
centimeter

3

kilograms per cubic meter
kHz kilohertz
kJ kilojoule
km kilometer
kOhm, kΩ kilo-ohm
kPa kilopascal
kph kilometers per hour
kV kilovolt
kVA kilovolt ampere
kVAR kilovolt ampere reactive
kW kilowatt
kWh kilowatt-hour
kWm kilowatt mechanical
kWth kilowatt-thermal
L liter
LAN local area network
L x W x H length by width by height
lb. pound, pounds

3

lbm/ft

pounds mass per cubic feet
LCB line circuit breaker
LCD liquid crystal display
LED light emitting diode
Lph liters per hour
Lpm liters per minute
LOP low oil pressure
LP liquefied petroleum
LPG liquefied petroleum gas
LS left side
L

wa

LWL low water level

sound power level, A weighted

LWT low water temperature
m meter, milli (1/1000)
M mega (10

3

m

3

m

3

m

units), male

cubic meter

/hr. cubic meters per hour
/min. cubic meters per minute

6

when used with SI

mA milliampere
man. manual
max. maximum
MB megabyte (2

20

bytes)
MCCB molded-case circuit breaker
MCM one thousand circular mils
meggar megohmmeter
MHz megahertz
mi. mile
mil one one-thousandth of an inch
min. minimum, minute
misc. miscellaneous
MJ megajoule
mJ millijoule
mm millimeter
mOhm, mΩ milliohm
MOhm, MΩmegohm
MOV metal oxide varistor
MPa megapascal
mpg miles per gallon
mph miles per hour
MS military standard
ms millisecond
m/sec. meters per second
mtg. mounting
MTU Motoren-und Turbinen-Union
MW megawatt
mW milliwatt
μF microfarad
N, norm. normal (power source)
NA not available, not applicable
nat. gas natural gas

NBS National Bureau of Standards
NC normally closed
NEC National Electrical Code
NEMA National Electrical

Manufacturers Association

NFPA National Fire Protection

Association
Nm newton meter
NO normally open
no., nos. number, numbers
NPS National Pipe, Straight
NPSC National Pipe, Straight-coupling
NPT National Standard taper pipe

thread per general use
NPTF National Pipe, Taper-Fine
NR not required, normal relay
ns nanosecond
OC overcrank
OD outside diameter
OEM original equipment

manufacturer
OF overfrequency
opt. option, optional
OS oversize, overspeed
OSHA Occupational Safety and Health

Administration
OV overvoltage
oz. ounce
p., pp. page, pages
PC personal computer
PCB printed circuit board
pF picofarad
PF power factor
ph., ∅ phase
PHC Phillipsr head Crimptiter

(screw)
PHH Phillipsr hex head (screw)
PHM pan head machine (screw)
PLC programmable logic control
PMG permanent magnet generator
pot potentiometer, potential
ppm parts per million
PROM programmable read-only

memory
psi pounds per square inch
psig pounds per square inch gauge
pt. pint
PTC positive temperature coefficient
PTO power takeoff
PVC polyvinyl chloride
qt. quart, quarts
qty. quantity
R replacement (emergency)

power source
rad. radiator, radius
RAM random access memory
RDO relay driver output
ref. reference
rem. remote
Res/Coml Residential/Commercial
RFI radio frequency interference
RH round head
RHM round head machine (screw)
rly. relay
rms root mean square
rnd. round
RO read only
ROM read only memory
rot. rotate, rotating
rpm revolutions per minute
RS right side
RTDs Resistance Temperature

Detectors

RTU remote terminal unit
RTV room temperature vulcanization
RW read/write
SAE Society of Automotive

Engineers
scfm standard cubic feet per minute
SCR silicon controlled rectifier
s, sec. second
SI Systeme international d’unites,

International System of Units
SI/EO side in/end out
sil. silencer
SMTP simple mail transfer protocol
SN serial number
SNMP simple network management

protocol
SPDT single-pole, double-throw
SPST single-pole, single-throw
spec specification
specs specification(s)
sq. square
sq. cm square centimeter
sq. in. square inch
SMS short message service
SS stainless steel
std. standard
stl. steel
tach. tachometer
TB terminal block
TCP transmission control protocol
TD time delay
TDC top dead center
TDEC time delay engine cooldown
TDEN time delay emergency to

normal
TDES time delay engine start
TDNE time delay normal to

emergency
TDOE time delay off to emergency
TDON time delay off to normal
temp. temperature
term. terminal
THD total harmonic distortion
TIF telephone influence factor
tol. tolerance
turbo. turbocharger
typ. typical (same in multiple

locations)
UF underfrequency
UHF ultrahigh frequency
UIF user interface
UL Underwriter’s Laboratories, Inc.
UNC unified coarse thread (was NC)
UNF unified fine thread (was NF)
univ. universal
URL uniform resource locator

(web address)
US undersize, underspeed
UV ultraviolet, undervoltage
V volt
VAC volts alternating current
VAR voltampere reactive
VDC volts direct current
VFD vacuum fluorescent display
VGA video graphics adapter
VHF very high frequency
W watt
WCR withstand and closing rating
w/ with
WO write only
w/o without
wt. weight
xfmr transformer

TP-6514 9/0954 Appendix

TP-6514 9/09e

E 2007, 2008, 2009 by Kohler Co. All rights reserved.

KOHLER CO. Kohler, Wisconsin 53044
Phone [phone], Fax [phone]
For the nearest sales/service outlet in the
US and Canada, phone [phone]
KohlerPower.com

Kohler Power Systems
Asia Pacific Headquarters
7 Jurong Pier Road
Singapore 619159
Phone [phone], Fax [phone]