Generac iQ5200
3900 W, dual-fuel
WEN DF451i
Generator · WEN Super Quiet Dual Fuel. Specs from the manufacturer page (checked ).
The WEN DF451i is a dual-fuel portable inverter generator with 3500 rated watts and 4500 surge watts on gasoline, or 3150 rated watts on propane. It has a 212cc engine that runs at 58 dBA at quarter load (22 feet), and it comes with a 3-year limited warranty.
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Running
3500W
Peak / surge
4500W
Fuel
dual-fuel
Run time @50 %
8.5h
Noise
58dB
Warranty
3yr
Key features
- Gasoline: 4500 surge watts and 3500 rated watts; propane: 4500 surge watts and 3150 rated watts
- Auto Fuel Selection Technology switches from propane to gasoline automatically for longer run times
- 58 dBA at quarter load, 22 feet
- Total harmonic distortion under 0.3% at no load and under 1.2% at full load
- Keyless electric start with a back-up recoil starter
- Fuel shut-off for easier maintenance
- Up to 8.5 hours half-load run time on the 2.2-gallon tank, or 9 hours half-load on a 20-pound LPG tank
- Two 3-prong 120V receptacles, one 120V 30A NEMA TT-30R receptacle, one 12V DC receptacle, and a 5V USB port
What it is for
- RV use
- Camping
- Back-up power
- Tailgating
Specifications
| Running watts | 3500 W |
|---|---|
| Peak / surge | 4500 W |
| Fuel | dual-fuel |
| Tank | 8.3 L (2.2 gal) |
| Run time at 50 % load | 8.5 h |
| Noise | 58 dB |
| AC output voltage | 120V |
| Warranty | 3 years |
From the WEN page. Values the manufacturer does not publish are left out.
What is in the box
- Spark arrestor
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WEN DF451i comparisons
- DF451i vs Generac iQ5200
- DF451i vs Anker SOLIX Smart Generator 5500
- DF451i vs Pulsar GD400BN
- DF451i vs Champion 5500-Watt Dual Fuel Inverter
- DF451i vs Firman W03383
Connection and wiring
Follow the diagrams in the WEN manual. Connecting to a home panel needs a transfer switch or interlock and a licensed electrician.
- Parallel connection, manual page 2 →
- Parallel connection, manual page 11 →
- Parallel connection, manual page 27 →
- Wiring diagram, manual page 41 →
Error codes and troubleshooting
We found no error-code table in this manual. Its troubleshooting section is the reference.
FAQ
How long does the WEN DF451i run on a tank?
The maker rates it at 8.5 hours at 50 % load (about 1,750 W) on a 2.2-gal tank. A light load such as a refrigerator and lights runs longer; a full load runs shorter.
Can the WEN DF451i start a sump pump or well pump?
Starting surge matters more than running watts: this unit is rated 4500 W peak. That covers a typical 1/2 HP sump pump (about 2150 W to start). Use the calculator with your exact pump.