Section 1 Features; Specifications; Generator; Engine - Lennox RGEN12 Operation Manual

1.1 Specifications

The generator set specification sheets provide specific
generator and engine information. Refer to the spec
sheet for data not supplied in this manual. Consult the
generator set service manual, engine operation manual,
and engine service manual for additional specifications.
Obtain copies of the latest spec sheets, manuals,
diagrams, and drawings from a Lennox dealer.

1.2 Generator

The generator uses a unique voltage regulation system,
which provides instant response to load changes.
This unique voltage regulation system ensures reliable
motor starting and consistent voltage levels. It utilizes a
voltage excitation system that employs a winding
independent of the main output windings to provide
excitation voltage.

1.3 Engine

The generator set has a four-cycle, twin cylinder, air-
cooled Kohlerr engine. The engine operates on clean-
burning natural gas or propane (LP) vapor. Engine
features include:
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Efficient overhead valve design and full pressure
lubrication for maximum power, torque, and reliability
under all operating conditions.
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Dependable, maintenance-free electronic ignition.
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Precision-formulated cast iron construction of parts
subjected to the most wear and tear.
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Field-convertible multi-fuel systems that allow fuel
changeover from natural gas to LP vapor (and vice-
versa) while maintaining
certification.
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Digital spark advance optimizes ignition timing for the
selected fuel.
XP-6515 4/09
CARB emission

Section 1 Features

1.4 Controller

Controller features include the following:
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Compact controller
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Integrally mounted to the generator set
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LED display:
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Engine runtime, hours
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AC voltage
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Frequency (Hz)
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Battery voltage
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Crank cycle status
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Setup information
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Application software version
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LED display communicates faults:
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High battery voltage
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High engine temperature
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Low battery voltage
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Low oil pressure
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Overcrank safety
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Overfrequency
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Overspeed
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Overvoltage
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Underfrequency
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Undervoltage
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Membrane keypad for configuration and adjustment
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Password-protected user access to menus
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Voltage, gain, and speed adjustment
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System configuration (system voltage/frequency
settings and generator set model)
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Remote two-wire start/stop capability
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Digital isochronous governor to maintain steady-
state speed at all loads
Digital voltage regulation: ±1.5% RMS no-load to
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full-load
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Automatic start for programmed cranking cycle
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Master control switch mounted on the junction box:
Run/Off-Reset/Auto
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Upgradeable application software
Section 1 Features 9