Generac Power Systems 1276-1 Manuel utilisateur

GENERAC POWER SYSTEMS, INC.

P.O. BOX 297 • WHITEWATER, WI 53190

www.generac.com

Part#D5507

PLEASE NOTE:

This installation guide is not a substitute for the

“

Installation and Owner’s Manual”

that will be furnished

with the Guardian®Home Standby Generator or the

“

Owner’s Manual”

furnished with the Guardian®Ultra

Source Portable Generator you may purchase in the

future. Please review the installation procedure again at

the time of generator installation. This kit is not intended

for use with the Guardian®Liquid-Cooled Generator

product line. This kit is not suggested to be compatible

with other generator manufacturer’s products.

Install your Ready Kit at the construction

stage or to pre-existing homes . . .

Use your Portable Generator for

emergency power now . . .

. . . Later install your Standby

for automatic emergency power!

• 100 AMP automatic

transfer switch with built-in load center

• 30ft. and 2ft. pre-wired conduits

• 5ft. power cord and 50 AMP plug

5FT. POWER CORD

with NEMA 14-50 plug for

Guardian Portable Gensets

KIT INCLUDES

INSTALLATION DRAWING

AUTOMATIC TRANSFER SWITCH CONNECTED TO THE EXTERNAL CONNECTION BOX

Installation Guide

INTRODUCTION

Thank you for purchasing this “Generator Ready” Kit for

the GUARDIAN®air-cooled 12kW and 15kW automatic

generators. This kit will provide you the ability to pre-wire

your home or business in anticipation of the eventual

purchase of a GUARDIAN®home standby generator. This

kit will also enable the operation of the GUARDIAN®

ULTRA SOURCE portable generator for use with your

home. The majority of the labor involved in the generator

installation is in the wiring. If you are purchasing for new

construction or retro-fitting in an existing home this kit

will save you time and money in process. When the time

comes to add your GUARDIAN®Automatic Home Standby

Generator, all you have left is to connect the unit to the fuel

source and install a wiring harness from the generator to

the external connection box. Then, just add your starting

battery and you have the ultimate automatic home standby

generator system. The Guardian®is on duty.

Four commonly used safety symbols accompany the

DANGER, WARNING and CAUTION blocks. The type of

information each indicates follows:

This symbol points out important safety

information that, if not followed, could endanger

personal safety and/or property of you and others.

This symbol points out potential explosion hazard.

This symbol points out potential fire hazard.

This symbol points out potential electrical shock

hazard.

SAVE THESE INSTRUCTIONS – The manufacturer

suggests that these rules for safe operation be

copied and posted near the unit’s installation site.

Safety should be stressed to all operators and

potential operators of this equipment.

Generac cannot possibly anticipate every possible

circumstance that might involve a hazard. The warnings in

this manual, and on tags and decals affixed to the unit are

therefore, not all-inclusive. If you use a procedure, work

method or operating technique Generac does not

specifically recommend, you must satisfy yourself that it

is safe for you and others. You also must make sure the

procedure, work method or operating technique that you

choose does not render the equipment unsafe.

ELECTRICAL HAZARDS 

• Utility power delivers extremely high and dangerous

voltages to the transfer switch as does the standby

generator when it is in operation.

• Do not handle any kind of electrical device while

standing in water, while barefoot, or while hands or feet

are wet. DANGEROUS ELECTRICAL SHOCK MAY

RESULT.

• In case of accident caused by electric shock,

immediately shut down the source of electrical power. If

this is not possible, attempt to free the victim from the

live conductor. AVOID DIRECT CONTACT WITH THE

VICTIM. Use a non-conducting implement, such as a

rope or board, to free the victim from the live

conductor. If the victim is unconscious, apply first aid

and get immediate medical help.

• Never wear jewelry when working on this equipment.

Jewelry can conduct electricity resulting in electric

shock, or may get caught in moving components

causing injury.

PLEASE NOTE:

This installation guide is not a substitute for the “

Installation and Owner’s Manual”

that will be furnished

with the Guardian®Home Standby Generator or the “

Owner’s Manual”

furnished wit the Guardian®Ultra

Source Portable Generator you may purchase in the future. Please review the installation procedure again

at the time of generator installation. This kit is not intended for use with the Guardian®Liquid-Cooled

product line. This kit is not suggested to be compatible with other generator manufacturer’s products.

KIT INCLUDES:

50 AMP PLUG ON 5FT. POWER CORD

THE EXTERNAL CONNECTION BOX

Located outside the home nearest the incoming gas

service.

30’ FLEXIBLE CONDUIT

Pre-wired from the automatic transfer switch with built-

in emergency load center for connection to the external

connection box.

PRE-WIRED AUTOMATIC TRANSFER SWITCH* AND

EMERGENCY LOAD CENTER WITH 12 CIRCUITS

Installed within 1 foot of the home’s main distribution

panel. This transfer switch will provide smooth and safe

transition between utility and generator power.

Eliminates the need to run extension cords.

*When used

with a portable generator the transfer from utility to

generator power will have to be performed manually.

(See page 7)

2’ PRE-WIRED CONDUIT FOR EASY CONNECTION TO

THE HOME’S MAIN DISTRIBUTION PANEL

12 UL LISTED WIRE NUTS

(not shown)

TOOLS REQUIRED:

Drill, drill bits, hole saw (type and length will be

determined by the materials you will be drilling and

cutting), open-end wrenches or adjustable wrenches,

socket wrenches or nut drivers, standard and Phillips

screwdrivers, sledge hammer, channel-lock pliers,

spade shovel, and safety goggles.

Designed with the

homeowner in mind!

ITEMS YOU MUST PURCHASE:

70 AMP double pole circuit

breaker (must be the same

type as in your main electrical

distribution panel)

Ground rod with grounding

strap

Crushed stone or pea gravel

(approximately 10-12 cubic

feet)*

Black poly-film or other

vegetation blocking fabric*

Silicone caulk

Fasteners (to mount

connection box and automatic

transfer switch)

Power cord clamp (to secure

cord at the external connection

box

*Only required when a Guardian Home Standby

generator is be installed.

Installation Guide

TRANSFER TO GENERATOR POWER SOURCE WHEN

UTILITY POWER FAILS

1. Set the generator’s 50 amp circuit breaker to its OFF

(or open) position.

2. Turn OFF the utility power supply to the transfer

switch using the means provided (such as a utility

main line circuit breaker or supplementary 70 amp

circuit breaker installed in main panel.

Do not attempt to activate the transfer switch manually

until all power voltage supplies to the switch have been

positively turned off. Failure to turn off all power voltage

supplies may result in extremely hazardous and

possibly fatal electrical shock.

3. Remove 4 hex bolts holding on transfer switch cover.

Remove cover.

4. Use the manual transfer handle inside the transfer

switch (attached to sidewall with wingnut) to move the

main contacts to their “Standby” position, i.e., loads

connected to the standby power source

(Figure 1)

Replace handle on side of box. Re-install transfer

switch cover.

5. Insert the NEMA 14-50 plug (from the power cord that

you have installed) into the mating receptacle on the

generator control panel.

6. Start the generator.

7. Let the engine stabilize and warm up for a few minutes.

8. Set the generator’s 50 amp circuit breaker to its’ ON

(or closed) position.

Figure 1 - Manual Transfer Switch Operation

9. Turn ON the utility power supply to the transfer switch

using the means provided (such as utility main line

circuit breaker) or supplementary 70 amp circuit

breaker you have installed in the main panel.

TRANSFER BACK TO UTILITY POWER SOURCE

When utility power has been restored, you will want to

transfer back to that source and shut down the generator.

This can be accomplished as follows:

1. Set the generator’s 50 amp circuit breaker to its OFF

(or open) position.

2. Let the engine run for a minute or two at no-load to

stabilize the internal temperatures.

3. Turn off the generator.

4. Turn OFF the utility power supply to the transfer

switch using the means provided (such as a utility

main line circuit breaker or the supplementary 70 amp

circuit breaker that was installed in the main panel).

Do not attempt to activate the transfer switch manually

until all power voltage supplies to the switch have

positively turned off. Failure to turn off all power voltage

supplies may result in extremely hazardous and

possibly fatal electrical shock.

5. Remove transfer switch cover.

6. Use manual transfer handle to move the main

contacts to their “utility” position, i.e., load connected

to the utility power source

(Figure 1).

Replace handle

on inside of transfer switch box. Replace transfer

switch cover.

7. Turn ON the utility power supply to the transfer switch

using the means provided (such as the utility main line

circuit breaker or the supplementary 70 amp circuit

breaker installed in the main panel.

8. Remove the NEMA 14-50 plug from the mating

receptacle on the generator control panel.

After utilizing the 5 ft. electrical power cord for operation with

the GUARDIAN®ULTRA SOURCE portable generator you

must remove it. Open the external connection box. Remove

the fasteners holding the Black, Red, White, and Green wires

in place. Remove wires from threaded lugs and from under

ground screw. Replace fasteners and ground screw. Loosen

the cable clamp and slide the power cord out of the external

connection box. Store the power cord with your GUARDIAN®

ULTRA SOURCE portable generator.

Choose a lamp or light fixture located in a frequently

occupied area of the house as a signal light to tell

you when utility power has returned. This light

should be on a utility powered circuit only so it

operates independent of the generator.

MANUAL TRANSFER OPERATION USING GUARDIAN®PORTABLE GENERATOR

8. From the inside of the house, feed the end of the 30-

foot conduit (INCLUDED and pre-wired from transfer

switch) through the wall to outside.

9. Remove the threaded lock nut from the conduit coupling.

10. Remove the knock out

in the lower right corner of

the external connection box.

From the rear of the

connection box, feed wires

& 4 pin plug into box. Slip

the lock nut over wires and

plug and tighten securely

onto conduit coupling.

Connect the black, red, and

white wires to separate

threaded lugs and tighten

securely. Screw the green

ground wire securely to the

bottom of the box. NOTE:

THE 4-PIN PLUG WILL not

be connected to any

mating plug or other wires.

11. Using appropriate

fasteners, mount

external connection

box over pre-drilled

hole to fully conceal

the hole. (Seal around

the hole and conduit

with silicone caulk

from both outside

and inside of house.)

The external connection box must be locked to ensure

safety and to discourage tampering.

12. Locate automatic transfer switch with built-in

emergency load center within one foot of main

distribution panel. The automatic transfer switch can

be located to the left or right of main distribution

panel. Hold transfer switch against the mounting

surface. Level the transfer switch and mark the

mounting holes. Drill the appropriate size pilot holes.

Mount the automatic transfer switch to mounting

surface with appropriate fasteners.

Silicone

Caulk

The outer diameter of the

conduit connector is 1-11/16”

The outer diameter

of the threaded end

is 15/16 inches.

Knockout

1ft.

10 Connect Wires

---  WARNING  ---

DANGER: Although you may choose to perform

electrical connections yourself, Generac Power Systems,

Inc. recommends that a licensed electrician or individual

with complete knowledge of electricity perform the

procedures in sections 13 and 14.

 DANGER: Switch service main circuit

breaker to “off” or open position prior to

removal of cover or removal of any wiring of

the main electrical distribution panel. The

wires connected to the service main circuit

breaker remain live or “hot”. Avoid contact with these

wires and the service main circuit breaker connection lugs.

“OFF”

Feed Conduit and Wires

Threaded Lock Nut

Connect Wires

Mounting Automatic Transfer Switch

Mount External Connection Box

Installation Guide

NOTE: Balance must be maintained when moving circuit

locations from main electrical distribution panel to

emergency load center. Circuit breaker positions

alternate buss bars vertically. Circuits sharing a neutral

wire should either be moved together to adjacent

positions in emergency load center or not moved. If you

are unsure of proper procedure or if your installation

differs from that described in this guide, consult a

licensed professional at this time.

13a. Remove the main electrical distribution panel cover.

Remove appropriate size knockout from the bottom

or side of the main panel. (A 2-foot flexible conduit is

pre-wired from the transfer switch with built-in load

center.) Remove threaded lock nut from conduit

coupling. Feed all wires through knockout into main

panel. Slip lock nut over wires and tighten securely

onto conduit coupling.

NOTE: Circuits to be moved must be protected by same

size breaker. For example, a 15 amp 120V circuit in

emergency load center will replace a 15 amp 120V

circuit in main panel.

13b. In your main panel, remove the black (hot) wire from

a circuit breaker that protects a circuit you want to

have powered in the event of a power failure. Wire

nut the black wire to the matching circuit lead wire

from the emergency circuit breaker from load center

in the transfer switch. (All circuit wires are color

coded and labeled for easy identification). Repeat

this process with remaining circuits to be powered

by the generator. White wires (neutral) in your main

distribution panel should remain connected to

neutral bar. It is not necessary to move them. The

emergency load center in the transfer switch supplies

the following circuits: (5) 15A/120V, (3) 20A/120V,

(1) 20A/240V and (1) 30A/240V.

14. Install the 70 Amp double pole circuit breaker that

you have purchased into main electrical distribution

panel. This circuit breaker must be compatible with

your main electrical distribution panel. It may be

necessary to reposition remaining circuit breakers or

remove circuit breakers that have been disconnected

to accommodate the insertion of the 70 Amp double

pole circuit breaker. Connect white wire to the main

distribution panel neutral bar. Connect solid green

wire to main electrical panel ground bar. Connect the

black and red wires to the 70 Amp double pole circuit

breaker.

UL approved wire nuts are included with installation kit.

YOUR GUARDIAN®

GENERATOR READY KIT

IS NOW INSTALLED!

Connection of Emergency Circuits

13a

Install 70 AMP Circuit Breaker

Connection of Emergency Circuits

13b

An added feature of the GENERAC® Generator Ready Kit is the ability to hook up a

GUARDIAN® ULTRA SOURCE portable generator. Included in the kit is a 5 foot

electrical power cord (black & red), neutral (white) and ground (green) wires. At

one end are the terminal connectors. At the other end is the male connector (NEMA

14-50) which plugs into the GUARDIAN®ULTRA SOURCE portable generator’s

control panel. To install this option, insert the terminal wire end of the power cord

into the bottom of the external connection box through the conduit clamp (not

included) from the outside. Allow about an inch of the power cord insulation to

enter beyond the clamp to the inside of the box. TIghten clamp securely. Attach

ground wire (green) to the bottom of the box using the supplied ground screw and

pre-drilled hole. Connect red, black and white wires each to separate lug posts.

Make sure hold down nuts are tightened securely.

OPTIONAL USE WITH A PORTABLE GENERATOR

CAUTION:

If you are performing

this step after the 30 foot

conduit has been

connected inside of the

external connection box

you must match the

black, red and white

wires to the lugs of the

wires previously placed.

(For example: black to

black; red to red, etc.)

EXTERNAL

CONNECTION BOX

Lug Posts

Bring power

cord through

here

NEMA 14-50

Receptacle

ULTRA SOURCE PORTABLE GENERATOR CONTROL PANEL

5 FOOT POWER CORD

WITH PLUG

50 AMP POWER PLUG

NEMA

14-50 Plug

Ground

Screw

Installation Guide

1. PLAN THE LOCATION OF YOUR GENERATOR.

NOTE: Do not place the generator directly under a

window.

Select an area outside of your home nearest your

incoming gas service. Determine where the

generator will be placed outside of the home.

Arrange for fuel piping with shut-off valve to be run

to this location. Keep in mind that GENERAC®

recommends placement no closer than 3 feet to any

structure. Local codes may dictate placement

farther from a structure. The 3/4” fuel inlet is located

6 inches in from the rear of the unit on the right side

if facing the unit from the front. The fuel inlet is 10.2

inches above ground.

2. Clear an area 5-1/2 feet by 5feet of grass and

vegetation to a depth of 5inches. This includes the

distance the generator should be set away from a

structure (3 feet) and 6inches beyond the width and

length of the generator mounting pad (48" L x 24" W).

3. Lay black poly-film to cover the area.

4. Fill the area to ground level with pea gravel or

crushed stone.

5. Drive an 8-foot grounding rod into the ground to

grade. Make sure grounding rod and strap are not

exposed above ground level. (NEC code applies to

grounding method.)

6. Determine where the flexible conduit will pass

through the house from inside to outside. When you

are certain you have clearance on each side of the

wall, drill a small pilot hole through the wall to mark

the location. Drill a 1-3/4” diameter hole through the

sheathing and siding with hole saw.

7. While adhering to all local electrical codes, route the

30 foot conduit along ceiling/floor joists and wall

studs to the location where the conduit will pass

through the wall to the exterior of the house.

1-3/4”

Diameter Hole

Crushed Stone or Pea Gravel

3 ft.

1-3/4”

Diameter Hole

Drill Hole Through House

Site Preparation and Standby Generator Placement

Drill Pass Through Hole

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