Guardian 04389, 04456, 04390 User guide

Home Standby - 7kW - 12kW - 15kW

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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.

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TEST CRITERIA:

>

PROTOTYPE TESTED

>

SYSTEM TORSIONAL TESTED

>

NEMA MG1-22 EVALUATION

>

MOTOR STARTING ABILITY

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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.

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SINGLE SOURCE SERVICE RESPONSE from Generac’s dealer network
provides parts and service know-how for the entire unit, from the engine
to the smallest electronic component. You are never on your own when
you own a GENERAC POWER SYSTEM.

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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

Air-Cooled Gas Engine Generator Sets

Continuous Standby Power Rating Model # 04389 - 7kW 60Hz

Model # 04456 - 12kW 60Hz
Model # 04390 - 15kW 60Hz

INCLUDES:

•

Automatic

Transfer
Switch With Built-In
Emergency Load Center

•Pre-wired External
Connection Box

•Flexible Fuel Line

•Composite Mounting Pad

•Pre-wired conduits

•Natural Gas or LP Gas Operation

•UL 2200 Listed

HOME STANDBY SPECIFICATIONS

Home Standby - 7kW - 12kW - 15kW

ENGINE

•Generac (OHVI) Design

•”Spiny-lok” cast iron cylinder walls

•Electronic ignition, spark advance and
compression release

•Full pressure lubrication system

•Low oil pressure shutdown system

•High temperature shutdown

•Revolving field

•Skewed stator

•Displaced phase excitation

•Automatic voltage regulation

•UL 2200 Listed

•Fully Automatic

•Remote Mounting

•UL Listed

•Manual/Auto/Off switch

•Utility voltage sensing

•Utility interrupt delay

•Engine warm-up

•Engine cool-down

•Seven day exerciser

•Timed Trickle Battery charger

•Main Line Circuit Breaker

•Weather protective enclosure

•Enclosed critical grade muffler

•Small, compact, attractive

•Pre-wired External Connection Box

•1’ Flexible Fuel Line

•Composite Mounting Pad

•Pre-wired conduits

•UL Listed wire nuts

Maximizes engine “breathing” for increased fuel efficiency. Cylinder walls run cooler, reducing
oil consumption. Because heat is the primary cause of engine wear, the OHVI has a significantly
longer life than competitive engines.

Rigid construction and added durability provide long engine life.

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

Superior lubrication to all vital bearings means better performance, less maintenance and significantly
longer engine life.

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. Provides more surge capability than brushless generator designs.

Regulates the output voltage to ±2% prevents damaging voltage spikes.

For your safety

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

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.

Prevents nuisance start-ups of the engine, set point approximately 10 seconds.

Ensures engine is ready to assume the load, setpoint approximately 10 seconds.

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

Operates engine to prevent oil seal drying and damage between power outages.

Maintains battery amperage to insure starting.

Protects generator from overload.

Ensures protection against mother nature. Hinged key locking roof panel for security.
Electrostatically applied epoxy paint for durability.

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

Makes for an easy, eye appealing installation.

Easy Installation - Virtually all hardware included, plus step-by-step photographed Installation Guide.

GENERATOR

TRANSFER

SWITCH

INSTALLATION

KIT

MICROPROCESSOR CONTROL

UNIT

GENERATOR Model 04389 (7kW) Model 04456 (12kW) Model 04390 (15kW†)

Rated Maximum Continuous Power Capacity (LP)......................................... 7,000 Watts* ....................................... 12,000 Watts* ...................................... 15,000 Watts*

Rated Maximum Continuous Power Capacity (NG)........................................ 6,000 Watts* ....................................... 12,000 Watts* ....................................... 13,000 Watts*

Rated Voltage....................................................................................................... 120/240 ................................................ 120/240 .............................................. 120/240

Rated Maximum Continuous Load Current

120 Volts ...................................................................................................... 50.0 NG/58.3 LP ................................. 100.0 NG/100.0 LP ............................... 108.3 NG/125.0 LP

240 Volts ...................................................................................................... 25.0 NG/29.2 LP .................................. 50.0 NG/ 50.0 LP ................................ 54.2 NG/62.5 LP

Main Line Circuit Breaker .................................................................................... 30 Amp ................................................. 50 Amp ......................................... 60 Amp/70 Amp†

Phase ...................................................................................................................... 1 ......................................................... 1 ......................................................... 1

Number of Rotor Poles ........................................................................................... 2 ......................................................... 2 ........................................................ 2

Rated AC Frequency ............................................................................................. 60Hz ..................................................... 60Hz ..................................................... 60Hz

Power Factor ............................................................................................................. 1 ............................................................1 ............................................................ 1

Battery Requirement (not included) ................................................................ Group 26/26R ....................................... Group 26/26R ....................................... Group 26/26R

12 Volts and 12 Volts and 12 Volts and

350 Cold-cranking 550 Cold-cranking 550 Cold-cranking

Amperes Minimum Amperes Minimum Amperes Minimum

Shipping Weight (Includes Transfer Switch) .................................................... 452 Pounds .......................................... 470 Pounds .......................................... 487 Pounds

Dimensions (L” x W” x H”).............................................................................. 48 x 24 x 28-1/4 ................................... 48 x 24 x 28-1/4 ................................... 48 x 24 x 28-1/4

†15kW on LP fuel requires electrical upgrade kit 04578-0. Kit includes power harnesses and 70 amp 2-pole circuit breaker.

ENGINE Model 04389 (7kW) Model 04456 (12kW) Model 04390 (15kW)

Type of Engine..................................................................................................... GH 410 .................................. GENERAC OHVI V-TWIN .................... GENERAC OHVI V-TWIN

Number of Cylinders................................................................................................ 1 ....................................................... 2 ....................................................... 2

Rated Horsepower....................................................................................... 14.5 @ 3,600 rpm ................................. 30 @3,600 rpm .................................. 30 @ 3,600 rpm

Displacement......................................................................................................... 410cc .................................................. 992cc ................................................... 992cc

Cylinder Block.............................................................................................. Aluminum w/Cast ................................ Aluminum w/Cast ................................ Aluminum w/Cast

Iron Sleeve Iron Sleeve Iron Sleeve

Valve Arrangement......................................................................................... Overhead Valve .................................... Overhead Valve .................................... Overhead Valve

Ignition System......................................................................................... Solid-state w/Magneto ........................ Solid-state w/Magneto .......................... Solid-state w/Magneto

Compression Ratio................................................................................................. 8:6:1 ..................................................... 9:5:1 ..................................................... 9:5:1

Starter.................................................................................................................... 12 Vdc .................................................. 12 Vdc ................................................... 12Vdc

Oil Capacity Including Filter........................................................................... Approx. 1.7 Qts ................................... Approx. 1.7 Qts. ................................... Approx. 1.7 Qts.

Operating RPM...................................................................................................... 3,600 ................................................... 3,600 .................................................... 3,600

Fuel Consumption

Natural Gas..............................................cu.ft./hr.

.................................................................1/2 Load ......................................... 74 ......................................................... 114 ...................................................... 148.5

................................................................Full Load ........................................105 ........................................................ 185 ....................................................... 240

Liquid Propane....................................ft

3

/hr(gal/hr)

................................................................1/2 Load .................................. 33/0.91 ...............................................48.9(1.34).............................................. 63.2(1.73)

................................................................Full Load ................................... 44.1/1.21 .............................................. 79.0(2.17) ............................................ 102.3(2.8)

CONTROLS

Model Switch

-Auto ............................................................................................................................................................ Automatic Start on Utility

failure/7 day exerciser

-Off ........................................................................................................................................................... Stops unit. Power is removed

Control and charger still operate

-Manual/Test (start) ................................................................................................................................. Start with starter control, unit

stays on. If utility fails, transfer

to load takes place.

Engine Start Sequence Cyclic cranking: 7 sec. on, 7 rest

(90 sec. maximum duration)

Engine Warm-up ............................................................................................................................................................... 10 seconds

Engine Cool-Down .............................................................................................................................................................. 1 minute

Starter Lock-out ................................................................................................................................................ Starter cannot re-engage until

5 sec. after engine has stopped.

2.5 Amp Timed Trickle Battery Charger ............................................................................................................................ Standard

Automatic Voltage Regulator w/Overvoltage Protection .................................................................................................... Standard

Automatic Low Oil Pressure Shutdown ............................................................................................................................. Standard

Overspeed Shutdown ................................................................................................................................................... Standard, 72Hz

High Temperature Shutdown ............................................................................................................................................. Standard

Overcrank Protection ........................................................................................................................................................ Standard

Safety Fuse ...................................................................................................................................................................... Standard

Rating definitions - Standby: Applicable for supplying emergency power for the duration of the utility power outage. No overload capability is available for this rating. (All ratings in accordance with
BS5514, ISO3046 and DIN6271). Prime (Unlimited Running Time): Unit not recommended for prime power applications. Applicable for supplying electric power in lieu of commercially purchased power.
Prime power is the maximum power available at variable load. A 10% overload capacity is available for 1 hour in 12 hours. (All ratings in accordance with BS5514, ISO3046, ISO8528 and DIN6271).
* Maximum wattage and current are subject to and limited by such factors as fuel Btu content, ambient temperature, altitude, engine power and condition, etc. Maximum power decreases about 3.5 per­cent for each 1,000 feet above sea level; and also will decrease about 1 percent for each 12° C (10° F) above 15.5° C (60°F).

Home Standby - 7kW - 12kW - 15kW

Home Standby - 7kW - 12kW - 15kW

TRANSFER SWITCH &
EMERGENCY LOAD CENTER Model 04389 (7kW) Model 04456 (12kW) Model 04390 (15kW)

No. of Poles ........................................................................... 2 ........................................... 2 ........................................... 2

Current Rating (amps) .......................................................... 100 ..........................................100 ......................................... 100

Voltage Rating (VAC) ........................................................... 250 ......................................... 250 ......................................... 250

Utility Voltage Monitor (fixed)

-Pick-up .................................................

80% ....................................... 80% ........................................ 80%

-Dropout ................................................

60% ........................................ 60% ........................................ 60%

Return to Utility ....................................... approx. 13 sec. ....................... approx. 13 sec. ....................... approx. 13 sec.

Exerciser weekly for 12 minutes ...................................... Standard ................................ Standard ................................. Standard

UL Listed .......................................................................... Standard ................................ Standard ................................. Standard

Dimensions (H” x W” x D”) ........................................... 26.5 x 12.5 x 7 ...................... 26.5 x 12.5 x 7 ....................... 26.5 x 12.5 x 7

Total of Pre-wired Circuits ...................................................... 8 ........................................... 10 ........................................... 12

No. 15A 120V ..................................................... 5 ........................................... 3 ............................................. 5

No. 20A 120V ..................................................... 1 ........................................... 3 ............................................. 3

No. 15A 240V ..................................................... - ........................................... - ............................................ -

No. 20A 240V ..................................................... - ........................................... 1 ............................................ 1

No. 30A 240V ..................................................... 1 ........................................... 1 ........................................... 1

Circuit Breaker Protected

Available RMS Symmetrical

Fault Current @ 250 Volts ........................................ 10,000 .................................... 10,000 .................................... 10,000

GENERAC POWER SYSTEMS, INC. • P.O. BOX 297 • WHITEWATER, WI 53190

WEBSITE: www.guardiangenerators.com

Bulletin 0162220SBY / Printed in USA 7.99, 8.99, 9.99, 11.99, 7.01, 3.03

All specifications are subject to change without notice.

Mechanical Dimensions (in inches)

Current No. of Height Width Depth
Rating Poles H1 H2 W1 W2

100 UL Listed 2 26.5 29.25 8.14 12.0 7

Terminal Wire Ranges

ATS Rated Amps Switch Terminal Neutral Lug/Stud Ground Lug
100A 2-Pole UL 1 x 1/0-12 1 x 3/8-16 Stud 1 x 2/0-14

Transfer Switch Features

• Electrically operated,
mechanically-held contacts for
fast, positive connections.

• Rated for all classes of load,
100% equipment rated, both
inductive and resistive.

• 2 pole, 250 VAC contactors.

• 160 millisecond transfer time.

• Dual coil design.

• Main contacts are silver plated
or silver alloy to resist welding
and sticking.

• Nema 1 enclosure is standard
on the 100 amp switch.

Conduit sizes
vary depending
on model #

W2

W1

H1

H2