Generac 005875-1 User Manual

GENERAC® GUARDIAN® SERIES

STANDBY GENERATORS - PREPACKAGED

20 kW

Air-Cooled Gas Engine Generator Sets

INCLUDES:

• True Power® Electrical Technology

• Two Line LCD Tri-lingual

Digital Nexus™ Controller

• Electronic Governor

• 200 Amp Service Rated Nexus Smart
Switch™ with Digital Load Management
Technology, NEMA 3R Rated

• External Main Circuit Breaker,
System Status & Maintenance Interval
LED Indicators and GFCI Duplex Outlet

• Sound Attenuated Enclosure

• Flexible Fuel Line Connector

• Composite Mounting Pad

• Base Fascia

• Natural Gas or LP Gas Operation

• 3 Year Limited Warranty

Standby Power Rating

Model 005875-1 (Aluminum - Gray) - 20 kW 60Hz

• UL 2200 Listed

FEATURES

¡ INNOVATIVE DESIGN & PROTOTYPE TESTING are key components

of GENERAC’S success in “IMPROVING POWER BY DESIGN.” But it
doesn’t stop there. Total commitment to component testing, reliability
testing, environmental testing, destruction and life testing, plus testing
to applicable CSA, NEMA, EGSA, and other standards, allows you to
choose GENERAC POWER SYSTEMS with the confidence that these
systems will provide superior performance.

¡ TRUE POWER® ELECTRICAL TECHNOLOGY: Superior harmonics and

sine wave form produce less than 5% Total Harmonic Distortion for utility
quality power. This allows confident operation of sensitive electronic equipment
and micro-chip based appliances, such as variable speed HVAC.

¡ TEST CRITERIA:

PROTOTYPE TESTED  NEMA MG1-22 EVALUATION

 SYSTEM TORSIONAL TESTED  MOTOR STARTING ABILITY

¡ SOLID-STATE, FREQUENCY COMPENSATED VOLTAGE REGULATION.

This state-of-the-art power maximizing regulation system is standard on
all Generac models. It provides optimized FAST RESPONSE to changing
load conditions and MAXIMUM MOTOR STARTING CAPABILITY by
electronically torque-matching the surge loads to the engine. Digital
voltage regulation at +/- 1%.

¡ SINGLE SOURCE SERVICE RESPONSE from Generac’s extensive dealer

network provides parts and service know-how for the entire unit, from the
engine to the smallest electronic component.

¡ GENERAC TRANSFER SWITCHES. Long life and reliability are

synonymous with GENERAC POWER SYSTEMS. One reason for this
confidence is that the GENERAC product line includes its own transfer
systems and controls for total system compatibility.

FEATURES Generac

®

Guardian® Series Standby Generator - 20 kW

•Generac (OHVI) Design

•”Spiny-lok” cast iron cylinder walls

•Electronic ignition/spark advance

•Full pressure lubrication system

ENGINE

•Low oil pressure shutdown system

•High temperature shutdown

•Revolving field

•Skewed stator

•Displaced phase excitation

•Automatic voltage regulation

GENERATOR

•UL 2200 Listed

•Fully Automatic

•DLM Technology

Maximizes engine “breathing” for increased fuel efficiency. Plateau honed cylinder walls and plasma
moly rings helps the engine run cooler, reducing oil consumption resulting in longer engine life.

Rigid construction and added durability provide long engine life.

These features combine to assure smooth, quick starting every time.

Pressurized lubrication to all vital bearings means better performance, less maintenance and longer
engine life. Now featuring a 2 year/200 hour oil change interval.

Superior shutdown protection prevents catastrophic engine damage due to low oil.

Prevents damage due to overheating.

Allows for smaller, light weight unit that operates 25% more efficiently than a revolving armature generator.

Produces a smooth output waveform for compatibility with electronic equipment.

Maximizes motor starting capability.

Regulates the output voltage to ±1% prevents damaging voltage spikes.

For your safety.

Transfers your vital electrical loads to the energized source of power.

Digital Load Management technology allows for the smart control of two air conditioners without any
additional items.

•Remote Mounting

SWITCH

TRANSFER

•UL Listed

•Auto/Off/Manual switch

•Utility voltage sensing

•Generator voltage sensing

•Utility interrupt delay

•Engine warm-up

•Engine cool-down

•Programmable seven day exerciser

NEXUS™ CONTROLS

•Smart battery charger

•Main Line Circuit Breaker

•Electronic governor

•Weather protective enclosure

•Enclosed critical grade muffler

UNIT

•Small, compact, attractive

•SAE

Mounts near your existing distribution panel for simple, low cost installation.

For your safety.

Selects the operating mode.

Constantly monitors utility voltage, setpoints 60% dropout, 80% pick-up, of standard voltage.

Constantly monitors generator voltage to ensure the cleanest power delivered to the home.

Prevents nuisance start-ups of the engine, adjustable 10-30 seconds.

Ensures engine is ready to assume the load, setpoint approximately 5 seconds.

Allows engine to cool prior to shutdown, setpoint approximately 1 minute.

Operates engine to prevent oil seal drying and damage between power outages by running the
generator for 12 minutes every week.

Delivers charge to the battery only when needed at varying rates depending on outdoor air temperature.

Protects generator from overload.

Maintains constant 60 Hz frequency.

Ensures protection against mother nature. Hinged key locking roof panel for security.
Lift-out front for easy access to all routine maintenance items. Electrostatically applied
textured epoxy paint for added durability.

Quiet, critical grade muffler is mounted inside the unit to prevent injuries.

Makes for an easy, eye appealing installation.

Sound attenuated enclosure ensures quiet operation.

•1’ Flexible Fuel Line Connector

•Composite Mounting Pad

SYSTEM

INSTALLATION

Easy Installation.