Norpro
385 Town Street
East Haddam, CT 06423
1-877-4NORPRO

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Navigator Yanmar Series - 20NY

20kW 60Hz
16.5kVA 50 Hz

Standard Features
Generator Specifications
Generator Ratings
Engine Specifications
Engine Electrical System
Fuel System
Fuel Consumption
Cooling System
Lubrication System
Exhaust System
Air Requirements
Sound Table
Navigator Yanmar Literature

Standard Features:
Analog 200 Control Panel
Aquashield™ Patented Exhaust Manifold Cover
Marine Grade Epoxy Paint (Ultra White)
Oil Drain Kit (Valve Type w/ Safety Lock)
Washable Long-Life Air Filter
10' Remote Extension Harness
Buddy Box (Spare Parts Kit)
ABS Molded Belt Guard
Coolant Overflow Bottle
Rubber Isolation Mounts
Heat Exchanger Cooling
Stainless Steel Drip Pan
Single Lift Point
12 Volt Breaker

Generator Specifications:
Manufacturer
Type
Exciter Type
Leads: Quantity
Voltage Regulator
Insulation Material
Temperature Rise
Bearing Type
Coupling
Voltage Regulation
Phase Type
Power Factor
kW Size
Mainline Breaker (Amps) *Optional
Marathon
4 Pole
Brushless
4
Solid State (Blaster)
H Type
105°C
Sealed
Direct Bolt-Up
1%
1
1.0
20
90

Generator Ratings:
Amps @ 120 Volts 60hz
Amps @ 240 Volts 60hz
166.6
83.3

Engine Specifications:
Manufacturer
Engine: Model Type
Cylinder Arrangment
Displacment
Bore
Stroke
Compression Ratio
Rated RPM 60 hz
Rated RPM 50 hz
Max Power At Rated RPM (60hz)
Max Power At Rated RPM (50hz)
Cylinder Head Material
Block Material
Governor Type
Frequency Regulation
Air Filter Type
Yanmar
4TNV88
4 In Line 4 Cycle
133.58 cu.in. (3392.9cu.mm)
3.46 in. (87.8mm)
3.54 in. (89.9mm)
19.1:1
1800
1500
29 bhp
N/A
Cast Iron
Cast Iron
Mechanical
3-5%
Replaceable Element

Engine Electrical System:
Ignition System
Starter System Voltage (DC)
Battery Charging System (Amps)
Battery Charging System Voltage (DC)
Battery Recommendation (CCA)
Battery Voltage (DC)
Starter kW
Electric
12V
40
12V
500
12V
1.4

Fuel System:
Fuel Shutoff Solenoid
Fuel Pump Priming
Fuel Pump
Fuel Type
Fuel Pump Lift
Fuel Line Supply
Fuel Line Return
Electric
Electric
Electric
#2 Diesel
3.28 ft. (.9m)
5/16 in. (7.9mm)
5/16 in. (7.9mm)

Fuel Consumption:
100% Load
75% Load
50% Load
1.67 gph. (6.32 Lph)
1.26 gph. (4.76 Lph)
.84 gph. (3.17 Lph)

Cooling System:
Manifold
Engine Coolant Capacity
Heat Exchanger Type
Raw Water Pump Inlet
Raw Water Pump Type
Raw Water Pump Flow Rate
Engine Water Pump Type
Fan Diameter*
Fan & Alternator (hp)*
Fan Type
Fan Rotation
* Used only on sound enclosed models
Water Jacketed
2.85 qts. (2.69 L)
3 in. (76.2mm) 2 Pass Cupronickel
5/8 in. (15.87mm)
Belt Driven
15 gpm. (56.78 Lph)
Centrifugal
9.5 in. (241.3mm)
1
5 Blade Pusher
Clockwise


Lubrication System:
Type
Engine Oil Capacity With Filter
Oil Filter Type
Full Pressure
7.82 qts. (7.40 L)
Cartridge

Exhaust System:
Exhaust Type
Max Allowable Back Pressure
Exhaust Outlet Size
Water Cooled
N/A in. hg (N/Amm hg)
2.5 in. (63.5mm)

Air Requirments:
Engine Combustion Air Intake Requirements
Generator End Cooling Requirements
Sound Shield Air Space Requiremants
62.61 cfm. (19.08 cmm)
220 cfm. (67.05 cmm)
4 in. (101.6 mm)

Sound Table:
dB(A) Without Sound Shield
Load
3'
10'
21'
100%
86
83
80
75%
85
83
79
50%
85
82
77

dB(A) With Sound Shield
Load
3'
10'
21'
100%
72
70
68
75%
73
68
66
50%
72
67
65

Norpro | 385 Town Street, East Haddam, CT 06423 | Toll Free: 1-877-4NORPRO | PH: 1-860-873-0100 | FAX: 1-860-873-0200

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