Generac
MMC 2.5FG Engine UL 2200 Listed CSA Listed Power Matched Naturally Aspirated
QuietSource 20 & 25
kW
Progressing in power from the 11
kW model, the liquid-cooled line of QuietSource generators make available environmentally
quiet operation while resisting corrosion. Combining an air-channeling designed
enclosure with sound-deadening materials make these some of the quietest liquid-cooled
standby generators on the market. And because of the all aluminum enclosure, these
units are also corrosion resistant to keep up their good looks over the long haul.
Units run on either natural gas or LP gas.
Standard Features
Built-in charger maintains battery at optimum performance level.
Automatic safety shutdowns protect
engine and generator in event of low oil pressure, low oil level, low coolant
level, high temperature, overspeed and/or overcrank.
Automatic seven-day exerciser runs the system for fifteen minutes each week to
maintain top running condition.
Transfer switch options are available in 100 amp or 200 amp sizes
Sound Attenuated Enclosure
Engineered air-channeling and sound reduction design
Automatic Voltage Regulator with
Over-Voltage Protection
Standard
Engine Warmup
10 seconds
Engine Cool-Down
1 minute
Safety Fuse
Standard
Starter Lockout
Starter cannot re-engage until 5
seconds after the engine has stopped
2 Amp Timed Trickle Battery Charger
Standard
Auto Switch
Utility failure/7 day exercise
Off Switch
Stops unit. Power is removed. Control
and charger still operate
Manual / test
Start with starter control, unit
stays on. If utility fails,transfer to load takes place
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.
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.
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.
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.
GENERATOR SPECIFICATIONS
TYPE ....................................................................... Four-pole,
revolving field ROTOR INSULATION .......................................................................
Class F STATOR INSULATION ......................................................................
Class H VOLTAGE WAVE FORM DEVIATION ....................................................
<5% TOTAL HARMONIC DISTORTION (line to line) ....................................
<3% TELEPHONE INTERFERENCE FACTOR (TIF) .....................................
<50 ALTERNATOR ................................................. Self-ventilated
and drip-proof BEARINGS (PRE-LUBED & SEALED) .......................................................
1 COUPLING ....................................................................
Direct, Flexible Disc LOAD CAPACITY (STANDBY) .............................................................
100% NOTE: Emergency loading in compliance with NFPA 99, NFPA 110, paragraph 5-13.2.6.
Generator rating and performance in accordance with ISO8528-5, BS5514, SAE J1349,
ISO3046, and DIN6271 standards. EXCITATION SYSTEM DIRECT ..................................................................
DC excitation system > Low-velocity brushes and slip rings > VOLTAGE REGULATION
........................................................ Solid-state > ±1%
regulation > GENERATOR FEATURES ?Four pole, revolving field generator, directly
connected to the engine shaft through a heavy-duty, flexible disc for permanent
alignment. ?Generator meets temperature rise standards for class "F"
insulation as defined by NEMA MG1-22, while the insulation system meets the requirements
for the higher class "H" rating. ?Stator windings are "trickle"
varnished and rotor windings are "roll-dipped" for complete impregnation.
?Unit tested for motorstarting ability by measuring instantaneous voltage dip
with a waveform data acquisition system. ?All models utilize an advanced wire
harness design for reliable interconnection within the circuitry. ?Magnetic circuit,
including amortisseur windings, tooth and skewed stator design, provides a minimal
level of waveform distortion and an electromagnetic interference level which meets
accepted requirements for standard AM radio, TV, and marine radio telephone applications.
?Voltage waveform deviation, total harmonic content of the AC waveform, and balanced
T.I.F. (Telephone Influence Factor) have been evaluated to acceptable standards
in accordance with NEMA MG1-22. ?Alternator is of drip-proof guarded construction.
?Fully life-tested protective systems, including "field circuit and thermal
overload protection" and standard mainline circuit breakers capable of handling
full output capacity. ?System torsional acceptability confirmed during prototype
testing. ENGINE SPECIFICATIONS MAKE ............................................................................
FORD INDUSTRIAL MODEL ...............................................................................................
2.5FG CYLINDERS .....................................................................................
4 in-line DISPLACEMENT .........................................................
2.5 Liter (153 cu. in.) BORE .............................................................................
96.01 mm (3.78 in.) STROKE ..........................................................................
86.36 mm (3.4 in.) COMPRESSION RATIO ......................................................................
9.37:1 INTAKE AIR ...................................................................
Naturally Aspirated NUMBER OF MAIN BEARINGS ................................................................
5 CONNECTING RODS .................................................... 4-Drop
forged steel CYLINDER HEAD ...........................................................................
S.O.H.C. PISTONS ..........................................................................
4-Aluminum Alloy CRANKSHAFT ................................................................
Drop Forged Steel VALVE TRAIN LIFTER TYPE ....................................................................
Rocker Arm Type INTAKE VALVE MATERIAL ......................... High Temperature
Alloy Forged EXHAUST VALVE MATERIAL ..................... High Temperature Alloy
Forged VALVE SEATS ...........................................................................
Replaceable ENGINE GOVERNOR . ELECTRONIC..............................................................................
Standard FREQUENCY REGULATION, NO-LOAD TO FULL LOAD ............ 0.5% STEADY STATE
REGULATION .................................................. ±0.25% LUBRICATION
SYSTEM TYPE OF OIL PUMP ............................................................................
Gear OIL FILTER ......................................................................
Full flow, cartridge CRANKCASE CAPACITY ..................................................
3.8 Liters (4 qts.) COOLING SYSTEM TYPE OF SYSTEM ........................................
Pressurized, closed recovery WATER PUMP ..........................................................
Pre-lubed, self-sealing TYPE OF FAN ...................................................................................
Pusher NUMBER OF FAN BLADES .......................................................................
6 DIAMETER OF FAN ......................................................... 406
mm (16.0 in.) FUEL SYSTEM FUEL . Natural Gas or L.P. Vapor ..........................................................
Standard CARBURETOR ............................................................................
Down draft SECONDARY FUEL REGULATOR - Nat. Gas or L.P. Vapor Systems AUTOMATIC
FUEL LOCKOFF SOLENOID ................................... Standard OPERATING FUEL
PRESSURE VAPOR SYSTEMS ..Nat. Gas 5 to 14" H2O LP Vapor.....11" to 14"
H2O ELECTRICAL SYSTEM BATTERY CHARGE ALTERNATOR ...................................
15 Amps at 12 V STARTER MOTOR ..................................................................................
12 V RECOMMENDED BATTERY ............... 12 V, 525 CCA @ 0o F/75 A.H., 26R GROUND
POLARITY .....................................................................
Negative APPLICATION & ENGINEERING DATA Home Standby - 15, 20 & 25 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). Maximum wattage
and current are subject to and limited by such factors as fuel Btu content, ambient
temperature, altitude, engine power and condition, etc.
OPERATING DATA
STANDBY
GENERATOR OUTPUT VOLTAGE/KW - 60Hz
HS-15
HS-20
HS-25
NG/LP
Rated AMP
NG/LP
Rated AMP
Rated NG/LP AMP
120/240V, 1-phase, 1.0 pf
15
62.5
20
83.3
25 104.2
MOTORSTARTING Maximum at 35% instantaneous
voltage dip with standard alternator; 60 Hz
29 KVA
38 KVA
50 KVA
FUEL Fuel consumption – 60
Hz – 100% Load
N.G.
L.P.
N.G.
L.P.
N.G. L.P.
ft.3 /hr. (gal./hr.) m3 /hr.
236 NA 6.68
92 2.53 2.6
307 NA 8.69
122 3.35 3.45
375 150 NA 4.12 10.62 4.25
COOLING Coolant capacity System
lit.(US gal.) Engine lit.(US gal.) Radiator lit.(US gal.) Coolant flow/min. 60
Hz lit.(US gal.) Heat rejection to coolant 60 Hz BTU/hr. Cooling air flow 60 Hz
m3/min. (cfm) COMBUSTION AIR REQUIREMENTS Flow at rated power 60 Hz m3/min. (cfm)
Design and specifications subject
to change without notice. Dimensions shown are approximate. 15 kW UNIT
WEIGHT: 923 lbs. Contact your Generac dealer for certified drawings.
20 kW UNIT WEIGHT: 942 lbs.
DO NOT USE THESE DIMENSIONS FOR INSTALLATION
PURPOSES
25 kW UNIT WEIGHT: 998 lbs.
1783.1 70.2
1836.8 72.3
958 37.7
Overall Height = 39 inches
76.2 3.0
882.6 [34.75" ] 736 29.0
Overall Length = 72.3 inches
All specifications are subject
to change without notice.
