Table of Contents

Product Identification Information			2
Safety Precautions and Instructions			5
Introduction	. . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	9
Service Assistance . . .	. . . . . . . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	11
Section 1 Service Views		. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	13
Section 2 Generator Set Operation			15
2.1	Operating Area		15
2.2	Prestart Checklist		15
2.3	Exercising the Generator Set		16
2.4	Generator Set Operation		16
	2.4.1	Local Starting and Stopping	16
	2.4.2	Automatic Starting and Stopping	16
	2.4.3	Remote Starting and Stopping	16
	2.4.4	Engine Start Crank Cycle	16
	2.4.5	Engine Cooldown	16
	2.4.6	Automatic Operation with Model RXT Transfer Switch	16
	2.4.7	Automatic Operation with Model RDT or RSB Transfer Switches	17
2.5	Exercise	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	17
	2.5.1	Unloaded Cycle Exercise with Complete System Diagnostics	17
	2.5.2	Unloaded Full-Speed Exercise	18
	2.5.3	Loaded Full-Speed Exercise (with RXT only)	18
	2.5.4	Shutdown During Exercise	18
	2.5.5	Power Failure During Exercise	18
	2.5.6	Exerciser Reset	18
	2.5.7	Setting the Exerciser at Power-up	18
	2.5.8	Changing the Exercise Setting	19
2.6	Faults . .	. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .	22
	2.6.1	Warnings	22
	2.6.2	Shutdowns	22
	2.6.3	ATS Communication Errors	22
	2.6.4	Resetting the Controller after a Fault Shutdown	22
	2.6.5	Event Log	27
2.7	Model RXT Transfer Switch Operation		27
	2.7.1	Source Availability	27
	2.7.2	ATS Control Sequence of Operation	28
	2.7.3	Time Delays	28
	2.7.4	ATS Load Control Relay Time Delay	28
Section 3 RDC2 Controller Operation			29
3.1	RDC2 Generator Set / Transfer Switch Controller		29
3.2	Controls and Indicators		29
	3.2.1	Controller Keypad	30
	3.2.2	LED Indicators	30
	3.2.3	LCD Display	31
3.3	Controller Power		32
3.4	Battery Charging		32
3.5	Changing Settings		32
3.6	Controller Menus		34
3.7	Main Menu		34
3.8	Overview Menu		35
3.9	Engine Metering Menu		35
3.10	Generator Metering Menu		36
3.11	Generator Set Information Menu		37

TP-6905 6/14

Table of Contents 3

24RCL specifications

The Kohler 24RCL is a powerful, compact generator designed to provide reliable backup power for residential applications. Equipped with a robust 24 kW output, this generator is engineered for both efficiency and durability, making it an excellent choice for homeowners looking to safeguard their property against outages.

One of the standout features of the Kohler 24RCL is its quiet operation. With a noise level significantly lower than that of traditional generators, it allows homeowners to maintain their comfort without the disruptive sounds often associated with backup power systems. This is particularly important in residential neighborhoods where maintaining peace and quiet is essential.

The generator is powered by a liquid-cooled Kohler engine, which ensures consistent performance and longevity. Liquid-cooled engines are known for their ability to provide better thermal management, thereby extending the life of the engine while also improving efficiency. Moreover, the Kohler 24RCL utilizes a proven design that enables quick starts and reliable operation, even in the most challenging conditions.

Another key technology in the 24RCL is its integrated transfer switch, which automatically detects power outages and switches the home’s electrical supply to the generator. This seamless transition ensures that there is no disruption in power, making it an ideal solution for critical loads such as refrigerators, medical equipment, and security systems. The generator’s advanced control system allows for easy monitoring and maintenance, providing users with peace of mind whenever they rely on their backup power.

The Kohler 24RCL boasts a weather-resistant enclosure, designed to withstand the elements and provide protection against rain, snow, and harsh winds. This rugged construction also contributes to the longevity of the unit, ensuring that it can perform reliably year after year.

Sustainability is another driving factor in the design of the Kohler 24RCL. The generator features efficient fuel consumption, which not only helps to reduce operating costs but also minimizes the environmental impact. With many homeowners increasingly focused on eco-friendly solutions, the 24RCL fits seamlessly into a sustainable lifestyle.

Overall, the Kohler 24RCL is a powerful, efficient, and quiet backup generator that combines advanced technology with rugged reliability. Its features make it a standout choice for homeowners seeking a dependable power solution that prioritizes convenience, safety, and sustainability. Whether facing severe weather or unexpected outages, the Kohler 24RCL ensures that homes remain powered and protected.

Kohler 24RCL manual Table of Contents

Models: 24RCL

24RCL specifications