Kohler Comprehensive Guide for RDC2 Controller, 20RESA, and 20RESAL Manuals
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temperature level, or if the temperature rises above the high limit during the cooldown cycle.

If a transfer switch other than the Model RXT is used, an additional engine cooldown time delay may be programmed on the transfer switch. To allow the smart engine cooldown on the RDC2 controller to operate most efficiently, set the cooldown time on the transfer switch controller to zero or the minimum time allowed. Refer to the instructions provided with the transfer switch for more information.

2.3.6Automatic Operation with Model RXT Transfer Switch

The Model RXT transfer switch connects to the RDC2 controller through the ATS interface board on the transfer switch. Also see the Model RXT Transfer Switch Operation/Installation Manual for more information about transfer switch operation.

The controller must be in AUTO mode for automatic transfer switch operation.

Automatic Start

The RDC2 controller receives utility source voltage sensing data from the Model RXT transfer switch.

1.If the utility source voltage falls below an acceptable level, the controller starts the engine start time delay.

2.If the utility source is not restored before the time delay expires, the generator set starts.

3.After the Normal-to-Emergency time delay, the ATS is signaled to transfer the load to the emergency source.

Automatic Stop with Engine Cooldown

1.When the utility source is restored, the Emergency-to-Normal time delay starts.

2.When the Emergency-to-Normal time delay expires, the load is transferred to the utility.

3.The generator set runs through the engine cooldown cycle and then stops.

2.3.7Automatic Operation with Model RDT or RSB Transfer Switches

If a Kohler Model RDT or RSB transfer switch is used, the engine start contacts from the ATS must be connected to engine start leads 3 and 4 on the generator set.

The controller must be in AUTO mode to respond to remote start/stop signals from an ATS or remote switch. Press the AUTO button to put the controller into automatic mode.

Automatic Start

The engine start contacts on the ATS close to signal the generator set to start, and remain closed while the generator set is running.

Automatic Stop

The engine start contacts on the ATS open to signal the generator set to stop.

22 Section 2 Generator Set Operation

TP-6804 12/11

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Contents Controllers ModelsTP-6804 12/11 Generator Set Identification Numbers Product Identification InformationController Identification Engine IdentificationTable of Contents Networking Configuration Submenu OnCue Password Table of Contents TP-6804 12/11 Battery Safety Precautions and InstructionsAccidental Starting Engine Backfire/Flash Fire Exhaust SystemFuel System Hazardous Noise Hazardous Voltage/ Moving PartsHeavy Equipment Hot PartsIntroduction List of Related LiteratureNameplate Emission InformationService Assistance Service Assistance TP-6804 12/11 Introduction Engine Descriptions and Service ViewsTransfer Switch Generator Set EnclosureRDC2 Controller Features DC2 Controller Features Accessories Service Views Removed to Show DetailDescriptions and Service Views TP-6804 12/11 Exercising the Generator Set Prestart ChecklistGenerator Set Operation Generator Set OperationAutomatic Operation with Model RXT Transfer Switch Automatic Operation with Model RDT or RSB Transfer SwitchesUnloaded Cycle Exercise with Complete System Diagnostics Setting the ExerciserExercise Faults Resetting the Controller after a Fault Shutdown Clearing a Fault on the RDC2 ControllerCheck communication wiring between Controller Fault Messages Generator Set Operation TP-6804 12/11 Controls and Indicators RDC2 Generator Set/ Transfer Switch ControllerRDC2 Controller Operation Controller Keypad LED Indicators RUN OFF AutoAutopaging Displays, Automatic Mode LCD DisplayBattery Charging Controller PowerChanging Settings Changing Settings Setting the Exerciser at Controller Power--up Setting the ExerciserChanging the Exercise Settings Procedure to Set the Exerciser on the RDC2 Controller RDC2 Controller Menus Main MenuOverview Menu Engine Metering MenuGenerator Metering Menu 12 Generator Metering MenuGenerator Set Information Menu Genset Run Time MenuGenset System Menu 15 Genset System MenuATS Status Menu 16 ATS Status Menu, with CalibrationATS Configuration Menu 17 ATS Configuration MenuDate and Time Menu Networking Information MenusNetworking Status Submenu DhcpNetworking Configuration Submenu OnCue Password Reset OnCue Password? YesRbus Information RbusRemote Devices Submenu 23 Remote Devices SubmenuProgrammable Interface Module PIM Status Menu 24 Programmable Interface Module PIM Status MenuLoad Control Module LCM Menus 25 Load Control Module LCM Status MenuEvent Log 26 Event LogDC2 Generator Set/ Transfer Switch Controller DC2 Controller OperationDC2 Controller Pushbutton Operation Status Displays, Generator Running Exerciser Reset Exercise ModesMaintenance Timer OnCue PasswordDC2 Controller Operation TP-6804 12/11 Scheduled Maintenance Scheduled MaintenanceService Schedule, 14RESA/RESAL Models LubricationService Schedule, 20RESA/RESAL Models Engine Oil Recommendation Oil Change ProcedureLubrication System Low Oil Pressure ShutdownResetting the Maintenance Timer Oil Cooler 20RESA/RESALAir Cleaner, 14RESA/RESAL Models Air Cleaner ServiceSpark Plugs Air Cleaner, 20RESA/RESAL Models Cooling System EZ-273000-J Storage Procedure Controller Service Access TroubleshootingFault Messages IntroductionTroubleshooting General Troubleshooting ChartAppendix a Abbreviations AnsiLCB Page By Kohler Co. All rights reserved

14/20RESAL, 14/20RESA specifications

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The design of these generators emphasizes durability and ease of installation. The robust enclosure protects against environmental elements, making them suitable for outdoor placement. Additionally, the generators feature a compact footprint, which is advantageous in areas with confined spaces.

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Maintenance is simplified with Kohler’s user-friendly design, which includes easy-access service points and a maintenance-free battery. This attention to serviceability enhances the overall user experience, ensuring that the generators operate efficiently for years.

In summary, the Kohler 14/20RESA and 14/20RESAL generators combine powerful performance with advanced technology, solid design, and user-friendly features. Their reliability makes them an excellent choice for anyone needing dependable backup power, whether for home, business, or specialized applications. With Kohler's reputation for quality backing these models, users can rest assured in their purchase decision.
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