Briggs Fortress 12KW
12kW ¹ STANDBY GENERATOR
BRIGGS & STRATTON®
THE SMART CHOICE
For the discerning homeowner that is looking for the
smartest, most reliable permanent backup power solution.
Introducing our dealer exclusive line. Available at your
local Briggs & Stratton Dealer with these great features:
•The industry's longest parts, labor and travel limited warranty
•Installed oil warmer for increased starting
protection in colder weather
Space Saving Design
Commercial-Grade Briggs & Stratton Vanguard™ Engine
•50% smaller than our previous 12kW generator
•Powerful V-Twin OHV engine
•Easy conversion between natural gas (NG) and liquid propane
vapor (LP) during installation
60% Quieter
2
•Re-engineered to be 60% quieter than our previous 12kW
Quality Clean Power
Designed for Easy Installation & Maintenance
•Ensures your electronics are safely powered
•Easy to move into installation location with two-wheel dolly
•Approved for installation as close as 18" to a building3
•Removable roof and side panels provide better service access
to the engine and alternator
Corrosion Resistant Enclosure & Base
•Made with automotive grade galvanneal steel to resist rust
•Powder-coated paint for years of protection against chips
and abrasions
Symphony® II Power Management System
•Customizable to your home’s needs
•Automatically balances the power of your home’s electrical load including
high wattage items like air conditioning units and electric ovens
•Offers whole house power with a more affordable home generator
GENERATOR SET RATINGS
LIQUID PROPANE
NATURAL GAS
LIMITED WARRANTY4
MODEL
VOLTAGE
PHASE
HZ
BREAKER
LP kW
LP AMPS
NG kW
NG AMPS
PARTS, LABOR, TRAVEL
Fortress
040546
120/240
1
60
60
12
50
10.8
41.7
6 Year
Briggs & Stratton
040517
120/240
1
60
60
12
50
10.8
41.7
5 Year
¹ This generator is rated in accordance with UL (Underwriters Laboratories) 2200 (stationary engine generator assemblies)
and CSA (Canadian Standards Association) standard C22.2 No. 100-04 (motors and generators).
2
Based on no-load sound power.
3
T he installation manual contains specific instructions related to generator placement in addition to NFPA 37, including the
requirement that carbon monoxide detectors be installed and maintained in your home.
4
Warranty details available at www.briggsandstratton.com
1
12kW STANDBY GENERATOR
ENGINE SPECIFICATIONS
ENGINE
Engine Model
LUBRICATION
Oil Capacity (oz)
Briggs & Stratton Vanguard™
Engine Model Type Trim Number
Lubrication System
389575-0002E1
Engine Speed (RPM)
Liquid Propane (LP) or
Natural Gas (NG)
Engine Cylinder Configuration
Full Pressure
Recommended Oil
3600
Engine Fuel
48
5W30 Full Synthetic
Low Oil Pressure Sensor
Yes
ALTERNATOR SPECS
OHV
Manufacturer
Number of Cylinders
Mecc Alte
2
Type
Displacement (cc)
38 / 627
Bore & Stroke (in)
2.97 / 2.76
Compression Ratio
8.3:1
Self-Excited, Rotation Field
Voltage Regulator
Governor Type
Insulation
Class H
CONTROLLER FEATURES
Electronic
Frequency Regulation
Brushless
Hour Meter
Yes
LED Digital Display
Yes
Fault Code Display
Yes
Weekly Exerciser
Yes
+/- 1 Hz
Valves
OHV with Hardened Seats
Ignition System
Fixed timing Magnetron®
Electric Ignition
Starter Motor Rating Voltage
12 Volt
Battery
12 Volt
OPERATIONS
SOUND RATING
FUEL CONSUMPTION1
AT 7 METERS
50% Load
1
100% Load
Liquid Propane
62.1 ft 3 / hr
1.7 gal / hr
83.8 ft 3 / hr
Natural Gas
117 ft / hr
—
172 ft / hr
3
3
69 dBA
2.3 gal / hr
—
Lowest measurement of 12 microphones around generator.
Sound level measurement at other locations around generator
may be different depending upon installation configuration.
uel consumption rates are estimated based on normal operating conditions. Generator operation may be greatly affected by
F
elevation and the cycling operation of multiple electrical appliances – fuel flow rates may vary depending on these factors.
2
12kW STANDBY GENERATOR
ADDITIONAL INFORMATION
OTHER FEATURES
CERTIFICATION
Galvanneal Steel with Corrosion
Resistant Paint
CARB Compliant
Yes
Overcrank Protection
Yes
NFPA Approved
Yes
Engine Warm Up (sec)
20 or 50 Automatic Transfer
Switch Controlled
cUL Listed to CSA 22.2 NO 100-04
Yes
NEMA Compliant
Yes
EPA Certified Fuel System
Yes
Enclosure Material
Engine Cool Down (min)
1
Response Time (sec)
26 or 56 Automatic Transfer
Switch Controlled
Monitoring Options
Basic Wireless Monitor
InfoHub™ Monitor
AVAILABLE ACCESSORIES
Maintenance Kit
Continuous
Battery Charging
6035
Yes
Cold Weather Kit
WEIGHT AND DIMENSIONS
Assembled Weight (lbs)
318
Overall Dimensions (in)
28 x 24.4 x 37.2
Packaged Weight (lbs)
345
Packaged Dimensions (in)
28"
Fortress
6404
Briggs & Stratton
6348
Basic Wireless Monitor
6264
InfoHub
6260
Remote Status Monitor
6144
39 x 35.5 x 45
24.4"
37.2"
26.1"
22.5"
3
12kW STANDBY GENERATOR
FUEL PIPE SIZE RECOMMENDATION CHART (CAPACITY IN THOUSANDS OF BTU/HOUR)
Natural Gas / Inlet Pressure less than 2 PSI / Pressure Drop 1/2” Water Column / Specific Gravity 0.60
1/2" pipe capacity
3/4" pipe capacity
1" pipe capacity
1-1/4" pipe capacity
1-1/2" pipe capacity
2" pipe capacity
20' Length
118
247
466
957
1,430
2,760
40' Length*
81
170
320
657
985
1,900
60' Length*
65
137
257
528
791
1,520
*
80' Length
56
117
220
452
677
1,300
100' Length*
50
104
195
400
600
1,160
*
Liquid Propane / Inlet Pressure 11” Water Column / Pressure Drop 1/2” Water Column / Specific Gravity 1.50
1/2" pipe capacity
3/4" pipe capacity
1" pipe capacity
1-1/4" pipe capacity
1-1/2" pipe capacity
200
418
788
1,617
2,423
4,666
137
287
541
1,111
1,665
3,207
60' Length*
110
231
435
892
1,337
2,575
80' Length
101
212
400
821
1,230
2,370
100' Length*
101
212
400
821
1,230
2,370
*
20' Length
40' Length*
*
2" pipe capacity
*Total length of piping from outlet of regulator to appliance furthest away.
ADDITIONAL INFORMATION
TRANSFER SWITCH SPECIFICATIONS
Prewired 16 Circuit
100 AMP
Model #071076
Standard 16 Circuit
100 AMP
Model # 071047
Symphony ® II
100 AMP
Model # 071071
Symphony ® II
150 AMP
Model # 071070
Symphony ® II
200 AMP
Model # 071068
Voltage Rating
Number of Protected Circuits
120/240
Select Circuit:16
Symphony ® II: Whole House
UL Approved
Yes
NEMA 3R Rated
Yes
SUPPORT EVERY STEP
OF THE WAY
NEED HELP? Just call 800-759-2744
Our technical support team is trained to answer
questions on our generators, transfer switches
and accessories.
CALL TODAY FOR A FREE
IN-HOME ESTIMATE!
800-743-4115
Disclaimer: Not for Prime Power or use where standby systems are legally required, for serious
life safety or health hazards, or where lack of power hampers rescue of fire-fighting operations.
BRIGGS&STRATTON
POST OFFICE BOX 702
MILWAUKEE, WI 53201 USA
Copyright ©2016. All rights reserved. BS1007-C – 11/16
Briggs & Stratton Corp. reserves the right to make changes in specifications and features shown herein, or discontinue the product described at any time without notice or obligation.
4
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