Kohler 26RCA User manual

Models:
14RCA
14RCAL
20RCA
20RCAL
26RCA
26RCAL
Controller:
RDC2
Residential/Commercial Generator Sets
TP-7091 4/23d
Installation

2 TP-7091 4/23
WARNING: This product can expose you to chemicals, including carbon monoxide and
benzene, which are known to the State of California to cause cancer and birth defects or
other reproductive harm. For more information go to www.P65warnings.ca.gov
Kohler strongly recommends that only factory-
authorized dealers install and service the generator.
Product Identification Information
Product identification numbers determine service parts. Record the product identification numbers in the spaces below
immediately after unpacking the products so that the numbers are readily available for future reference. Record field-installed
kit numbers after installing the kits.
Generator Set Identification Numbers
Record the product identification numbers from the generator set nameplate(s).
Model Designation _________________________________________________________
Specification Number _______________________________________________________
Serial Number ____________________________________________________________
Controller Identification
Record the controller description from the generator set operation manual, spec sheet, or sales invoice.
Controller Description________________________________________________________
Engine Identification
Record the product identification information from the engine nameplate.
Manufacturer_________________________________________________________________
Model Designation___________________________________________________________
Serial Number_______________________________________________________________
Accessory Number
Accessory Description
Accessory Number
Accessory Description

TP-7091 4/23 3
Table of Contents
Safety Precautions and Instructions........................................................................................................................................5
Introduction ..............................................................................................................................................................................11
Service Assistance...................................................................................................................................................................13
Section 1. Location and Mounting..........................................................................................................................15
1.1 Introduction ............................................................................................................................................................15
1.2 Lifting......................................................................................................................................................................16
1.3 Generator Set Inspection .......................................................................................................................................17
1.4 Location and Mounting...........................................................................................................................................17
1.4.1 Mounting Area..........................................................................................................................................17
1.4.2 Exhaust Requirements.............................................................................................................................18
1.5Dimension Drawings ..............................................................................................................................................18
1.6 Access the Air Intake Area.....................................................................................................................................19
Section 2. Fuel .........................................................................................................................................................21
2.1 Fuel Requirements.................................................................................................................................................21
2.1.1 Fuel Supply..............................................................................................................................................21
2.1.2 Fuel Pipe Size..........................................................................................................................................22
2.1.3 Connecting the Fuel Supply.....................................................................................................................23
2.2 Fuel Conversion.....................................................................................................................................................24
2.2.1 Fuel Conversion, Original Fuel System, 14RCA/L...................................................................................25
2.2.2 Fuel Conversion, Original Fuel System, 20RCA/L...................................................................................27
2.2.3 Fuel Conversion, Revised Fuel System, 14/20/26RCA/L.........................................................................28
Section 3. Electrical.................................................................................................................................................31
3.1 Electrical Connections............................................................................................................................................31
3.1.1 Wire Selection..........................................................................................................................................31
3.1.2 Grounding................................................................................................................................................32
3.1.3 Electrical Lead Entry................................................................................................................................33
3.1.4 Field Connections....................................................................................................................................34
3.1.5 AC Power Supply.....................................................................................................................................36
3.2 Battery....................................................................................................................................................................37
3.3 ATS and Accessory Communication Connections.................................................................................................39
3.3.1 Communication Cable Specifications.......................................................................................................39
3.3.2 Transfer Switch Connection.....................................................................................................................40
3.3.3 System Connections with Accessory Modules.........................................................................................41
Section 4. Prestart ...................................................................................................................................................45
4.1 Prestart Installation Check .....................................................................................................................................45
4.2 Set the Exerciser....................................................................................................................................................46
4.2.1 Setting the Exerciser................................................................................................................................46
4.2.2 Loaded Exercise......................................................................................................................................46
Section 5. Accessories............................................................................................................................................47
5.1 Introduction ............................................................................................................................................................47
5.2 Carburetor Heater ..................................................................................................................................................47
5.3 Programmable Interface Module (PIM) ..................................................................................................................50
5.4 OnCue Plus Generator Management System........................................................................................................51
5.5 Load Management Devices....................................................................................................................................52
5.5.1 Power Relay Module................................................................................................................................53
5.6 PowerSync Automatic Paralleling Module (APM)...................................................................................................53

4 TP-7091 4/23
5.7 Cold Weather Package ..........................................................................................................................................55
5.7.1 Battery Heater..........................................................................................................................................55
5.7.2 Breather Tube and Oil Heater..................................................................................................................56
5.7.3 Fuel Regulator Heater (20 and 26 kW models only)................................................................................58
5.7.4 Alternator Weather Cover ........................................................................................................................60
5.7.5 Oil Pressure Sensor Boot.........................................................................................................................60
Section 6. Drawings and Diagrams........................................................................................................................61
Appendix A. Abbreviations.........................................................................................................................................87

TP-7091 4/23 5
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 a hazardous situation which, if not avoided, will result in death or serious injury.
WARNING
WARNING indicates a hazardous situation which, if not avoided, could result in death or serious injury.
CAUTION
CAUTION indicates a hazardous situation which, if not avoided, could result in minor or moderate injury.
NOTICE
NOTICE is used to address practices not related to physical injury.
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
equipment connected to the set, disable the generator set as follows: (1) Place the generator set start/stop switch in the STOP
position. (2) Disconnect the power to the battery charger, if equipped. (3) Remove the battery cables, negative (–) lead first.
Reconnect the negative (–) lead last when reconnecting the battery. Follow these precautions to prevent the starting of the
generator set by the remote start/stop switch.

6 TP-7091 4/23
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 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.
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.

TP-7091 4/23 7
Engine Backfire/Flash Fire
WARNING
Risk of fire.
Can cause severe injury or death.
Do not smoke or permit flames or sparks near fuels or the fuel system.
Servicing the air cleaner. A sudden backfire can cause severe injury or death. Do not operate the generator set with the
air cleaner removed.
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 detectors. Carbon monoxide can cause severe nausea, fainting, or death. Install carbon monoxide
detectors on each level of any building adjacent to the generator set. Locate the detectors to adequately warn the building’s
occupants of the presence of carbon monoxide. Keep the detectors operational at all times. Periodically test and replace the
carbon monoxide detectors according to the manufacturer’s instructions.
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:
•Light-headedness, dizziness
•Physical fatigue, weakness in joints and muscles
•Sleepiness, mental fatigue, inability to concentrate or speak clearly, blurred vision
•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.

8 TP-7091 4/23
Fuel System
WARNING
Explosive fuel vapors.
Can cause severe injury or death.
Use extreme care when handling, storing, and using fuels.
The fuel system. Explosive fuel vapors can cause severe injury or death. Vaporized fuels are highly explosive. Use extreme
care when handling and storing fuels. Store fuels in a well-ventilated area away from spark-producing equipment and out of the
reach of children. Never add fuel to the tank while the engine is running because spilled fuel may ignite on contact with hot parts
or from sparks. Do not smoke or permit flames or sparks to occur near sources of spilled fuel or fuel vapors. Keep the fuel lines
and connections tight and in good condition. Do not replace flexible fuel lines with rigid lines. Use flexible sections to avoid fuel
line breakage caused by vibration. Do not operate the generator set in the presence of fuel leaks, fuel accumulation, or sparks.
Repair fuel systems before resuming generator set operation.
Gas fuel leaks. Explosive fuel vapors can cause severe injury or death. Fuel leakage can cause an explosion. Check the
LPG vapor 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.
Explosive fuel vapors can cause severe injury or death. Take additional precautions when using the following fuels:
Propane (LPG)—Adequate ventilation is mandatory. Because propane is heavier than air, install propane gas detectors low in
a room. Inspect the detectors per the manufacturer’s instructions.
Natural Gas—Adequate ventilation is mandatory. Because natural gas rises, install natural gas detectors high in a room. Inspect
the detectors per the manufacturer’s 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.

TP-7091 4/23 9
Hazardous Voltage/Moving Parts
DANGER
Hazardous voltage.
Will cause severe injury or death.
This equipment must be installed and serviced by qualified electrical personnel.
DANGER
Hazardous voltage. Moving parts.
Will cause severe injury or death.
Operate the generator set only when all guards and electrical enclosures are in place.
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.
CAUTION
Welding the generator set.
Can cause severe electrical equipment damage.
Welding on generator set will cause serious damage to engine electronic controls components. Disconnect all engine
electronic control connections before welding.
Grounding electrical equipment. Hazardous voltage will 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 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.
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 battery-charging alternator connections. (5) Attach the weld ground connection close to the weld location.
Connecting the battery and the battery charger. Hazardous voltage will 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 will 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.

10 TP-7091 4/23
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.
Hot Parts
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-7091 4/23 11
Introduction
This manual provides installation instructions for Residential/Commercial Model 14RCA/L, 20RCA/L, and 26RCA/L generator
sets. See Figure 1. Refer to the Operation Manual for generator set operation and maintenance instructions. RCAL models
include a Kohler model RXT automatic transfer switch (ATS).The ATS installation instructions are provided in a separate manual.
See the List of Related Literature for document part numbers.
The generator set is approved for use in stationary applications in locations served by a reliable utility power source.
Kohler strongly recommends that only factory authorized dealers install and service the generator.
Have a Kohler®authorized 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 or operate 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.
Figure 1 Generator Set
Warranty Registration
The RDC2 controller requires an unlock code to operate in automatic (AUTO) mode. The unlock code needs to be entered only
once. See TP-7238 for instructions to register the generator set in Kohler Power Assistant and obtain the unlock code. Complete
the startup and installation checklists supplied with the startup notification form.
aac11780

12 TP-7091 4/23
List of Related Literature
Figure 2 identifies literature available for the generator sets and related accessories covered in this manual. Only trained and
qualified personnel should install or service the generator set.
Generator Set Literature
Literature Part No.
Specification Sheet, 14RCA/L
G4-270
Specification Sheet, 20RCA/L
G4-272
Specification Sheet, 26RCA/L
G4-315
Installation Manual, Generator Set
TP-7091
Operation Manual, Generator Sets
TP-7092
Warranty Registration and Controller Unlock Code
TP-7238
Service Manual, Generator Set
TP-7093
Transfer Switch Literature
Operation/Installation Manual, Model RDT Transfer Switch
TP-7192
Operation/Installation Manual, Model RXT Automatic Transfer Switch
TP-7193
Accessory Literature
User Guide, OnCue©Plus
TP-7006
Technical Manual, OnCue©Plus
TP-7007
Operation Manual, SiteTech™Software
TP-6701
Firmware Update Using the USB Utility
TT-1636
Accessory Installation Instructions
Carburetor Heater Kit, 14 kW Models
TT-1297
Carburetor Heater Kit, 20 and 26 kW Models
TT-1482
Fuel Regulator Heater Kit
TT-1569
Programmable Interface Module (PIM)
TT-1584
PowerSync®Automatic Paralleling Module (APM)
TT-1596
Load Shed Kit
TT-1609
Battery Heater Kit
TT-1634
Power Relay Modules
TT-1646
Breather Tube Heater and Oil Heater
TT-1709
Oil Pressure Sensor Boot Kit
TT-1717
OnCue Plus Wireless Kit
TT-1721
Remote Emergency Stop Switch (Lockable)
TT-1795
Figure 2 Related Literature

TP-7091 4/23 13
Service Assistance
For professional advice and conscientious service, please contact your nearest Kohler dealer.
•Visit the Kohler Co. website at KOHLERPower.com.
•Look at the labels and decals on your Kohler product or review the appropriate literature or documents
included with the product.
•Call toll free in the US and Canada 1-800-544-2444.

14 TP-7091 4/23
Notes

TP-7091 4/23 15
Section 1. Location and Mounting
1.1 Introduction
DANGER
Hazardous voltage.
Will cause severe injury or death.
This equipment must be installed and serviced by qualified electrical personnel.
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 detectors. Carbon monoxide can cause severe nausea, fainting, or death. Install carbon monoxide
detectors on each level of any building adjacent to the generator set. Locate the detectors to adequately warn the building’s
occupants of the presence of carbon monoxide. Keep the detectors operational at all times. Periodically test and replace the
carbon monoxide detectors according to the manufacturer’s instructions.
Have the generator set installed by an authorized Kohler dealer or authorized representative. For all locations, ensure that the
installation complies with applicable national and local codes. In the United States, the installation must comply with the National
Electrical Code (NEC) and local codes. For Canadian installations, refer to the Canadian Electrical Code (CEC).
The generator set must be installed outdoors. The exhaust systems on enclosed units are designed for outdoor installation only.
Note:
DO NOT install or operate these generator sets inside a building.
Note:
Install carbon monoxide (CO) detector(s) on each level of any building adjacent to a generator set. Locate the detectors to
adequately warn the building’s occupants of the presence of carbon monoxide.
Obtain a building permit and contact your local utility companies to mark the locations of underground pipes and cables.
Read and follow the safety precautions in this manual and observe the decals on the equipment. Refer to the diagrams and
drawings in this manual for dimensions and electrical connections during the installation procedure. Read the entire installation
procedure and obtain the accessories and tools needed before beginning installation. Perform the steps in the order shown.
To install optional accessories, follow the instructions provided with each kit.

16 TP-7091 4/23
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.
Generator set weights are shown in Figure 3. These shipping weights include the generator set and packaging with skid, but do
not include the battery or an automatic transfer switch. Use lifting bars inserted through the holes in the base to lift the unit.
See Figure 4 for lifting hole locations. To access the lifting holes:
1. Raise the roof.
2. Lift off the exhaust end panel and the air intake end panel. No tools are required to remove the enclosure panels.
3. Lift off the service side panel.
4. Insert lifting bars through the holes in the base to lift the generator set.
After placing the generator set in its final location, use the plastic plugs provided with the generator set to cover the lifting holes
that are not covered by the enclosure panels.
Model
Weight, kg (lb.)*
14RCA
200 (440)
20RCA
252 (555)
26RCA
283 (625)
Weights include generator set and packaging with skid; no
battery or ATS.
Figure 3 Approximate Weights
Figure 4 Lifting Holes
Raise the roof and lift the air intake side and exhaust end panels up and off.
Then remove the service-side panel to expose lifting holes in the base.
Lifting holes (for lifting bars).
Insert plastic plugs after lifting.
GM101737

TP-7091 4/23 17
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 the Operation Manual for additional information.
1.4 Location and Mounting
Install the generator set outdoors near the incoming gas service. The generator set location must allow easy access for
maintenance and service. The required distance from a structure is dependent on state and local codes. See the dimension
drawing in the Drawings and Diagrams section for the minimum clearance from structures and non-combustible materials.
Locate the generator set so that the hot exhaust does not blow on plants or other combustible materials. No plants, shrubs, or
other combustible materials are allowed within 1.2 m (4 ft.) of the exhaust end of the generator set.
Do not install the generator set where exhaust gas could accumulate and seep inside or be drawn into a potentially occupied
building. Furnace and other similar intakes must be at least 3 m (10 ft.) from the exhaust end of the generator set.
WARNING
DO NOT locate the generator set near patios, decks, play areas, or animal shelters. Keep items such as lawn furniture, toys,
sports equipment, and all combustible materials away from the generator set exhaust outlet.
Remind family members, children, and visitors to use caution near the generator set. Generator sets connected to automatic
transfer switches start automatically during exercise periods and power outages. Some generator set components become
hot when the generator set is running and remain hot for a time after the generator set shuts down.
1.4.1 Mounting Area
Prepare the generator set mounting area. The mounting area must:
1. Provide a flat, level surface for the generator set.
2. Allow easy access for maintenance and service.
3. Support the weight of the generator set with related equipment, such as the battery and mounting pad.
4. Support the generator set weight for the lifetime of the generator set.
5. Meet applicable building codes.
6. Not be subject to flooding.
Clear all combustible materials, including plants and shrubs, building materials, and lawn furniture, from an area at least 1.2 m
(4 ft.) beyond the exhaust end of the generator set. See the dimension drawing in the Drawings and Diagrams section.
The generator set is shipped on an aluminum base. Set the base directly on the mounting area or on an optional concrete
mounting pad.

18 TP-7091 4/23
1.4.2 Exhaust Requirements
Figure 5 gives the exhaust 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 the dimension drawing.
Exhaust
Temperature, °C (°F)
Exhaust gas exiting the
enclosure at rated kW, °C (°F)
260 (500)
Figure 5 Exhaust Flow and Temperature
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 6 shows the locations of the cooling air intake and exhaust vents. Inspect the air
inlet and outlet openings inside and outside the enclosure to ensure that the air flow is not blocked.
Figure 6 Cooling Air Intake and Exhaust
1.5 Dimension Drawings
See the dimension drawings in the Drawings and Diagrams section for the generator set dimensions, fuel and electric inlet
locations, and recommended clearance.
Air intake
Exhaust outlet
Non-Service Side
Air intake
adv8928
14 and 20 kW models
26 kW models
Non-Service Side
Air intake
Air intake
Exhaust outlet
Adv9919

TP-7091 4/23 19
1.6 Access the Air Intake Area
The battery, fuel system, and some electrical connections are located in the air intake area. Remove the enclosure panel to
access the air intake area during installation as described below. No tools are required to remove and replace the service-side,
air intake end, or exhaust end panels.
1. Unlock and raise the enclosure roof.
2. The air intake panel hangs on four 20 mm (0.8 in.) diameter bushings. Pull the air intake panel up and off.
See Figure 7.
3. To make the electrical connections, you will also need to remove the cover panel over the terminal block.
4. After all electrical connections are complete and the battery is installed and connected, reinstall the panels. Align the
four angled slots on the panel with the bushings on the enclosure and lower the panel into place.
Figure 7 Removing the Air Intake Panel
Roof
Panel hanging bushings, qty. 4
Air intake end panel
Service-side panel
ADV-8928
img1079

20 TP-7091 4/23
Notes