INSTALLATION

The Home Generator System unit has been factory

set to run on natural gas. If you need to change from natural gas to LP gas, the unit will need to be reconfigured, as described on page 18.

It is recommended that the fuel connection incorporate the following components:

•A manual fuel shut-off valve located in the interior of the building.

•A manual fuel shut-off valve located outside the building, just before the generator unit.

•Where the formation of hydrates or ice is known to occur, piping should be protected against freezing.The termination of hard piping should include a sediment trap where condensate is not likely to freeze.

•A manometer port should be provided.

The manometer port permits temporary installation of a manometer (Figure 5), to ensure that the engine receives the correct fuel pressure to operate efficiently throughout its operating range.

Figure 5 — Temporary Manometer Installed

When the initial test runs are completed, the manometer is removed and the port is plugged. A typical final fuel connection assembly is shown in Figure 6.

Figure 6 — Completed Fuel Connections

From Fuel

Supply Line

To Home

Standby Generator

Fuel Consumption

See Figure 7 for fuel supply requirements at half and full load for both natural gas and LP vapor.

Figure 7 — Fuel Supply Requirements

Natural Gas*

LP Vapor**

 

 

 

 

1/2 Load

Full Load

1/2 Load

Full Load

 

 

 

 

80

137

33

56

 

 

 

 

* = Natural Gas is in cubic feet per hour ** = LP Vapor is in cubic feet per hour

NOTE: A digital manometer, P/N 19495, is available at your local Briggs & Stratton service center.

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Briggs & Stratton 40221 manual Fuel Consumption, From Fuel, Standby Generator, Load
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40221 specifications

The Briggs & Stratton 40221 is a prominent model of portable generator that is well-regarded for its reliability, performance, and innovative features. Designed for both home and professional use, this generator stands out due to its robust construction and versatile applications, making it an excellent choice for homeowners, contractors, and outdoor enthusiasts alike.

One of the main features of the Briggs & Stratton 40221 is its powerful 305cc engine, which delivers a notable output of 3,250 running watts and a peak wattage of 3,750 watts. This capacity ensures that it can effectively power essential appliances during outages or provide energy for tools and equipment on job sites. The generator’s ability to handle a variety of loads makes it suitable for a range of applications, from powering refrigerators and lights to operating power tools.

The Briggs & Stratton 40221 utilizes advanced inverter technology, which is designed to produce clean and stable power. This technology allows users to safely run sensitive electronics such as laptops and smartphones without the risk of damage. The inverter system also provides excellent fuel efficiency, meaning users can run the generator longer on a single tank of gas, enhancing convenience and cost-effectiveness.

Another key characteristic of the 40221 is its lightweight and portable design. Equipped with convenient folding handles and solid rubber wheels, it can be easily transported to job sites, campsites, or stored away during periods of non-use. The generator’s compact frame doesn’t compromise its durability; it is built to withstand outdoor conditions, thanks to its reinforced structure and weather-resistant design.

Safety features are a fundamental aspect of the Briggs & Stratton 40221. It comes with an Automatic Voltage Regulation (AVR) system that helps maintain consistent power output while protecting connected devices from voltage spikes. Additionally, it includes built-in circuit breakers to prevent overload and a low-oil shutdown feature, which stops the engine to avoid damage when oil levels get too low.

The Briggs & Stratton 40221 is equipped with multiple outlets, including 120V AC outlets and a 12V DC outlet for straightforward connectivity to various devices. With user-friendly controls and a clear display for monitoring fuel levels and runtime, this generator is designed for ease of use, appealing to both seasoned and novice users.

In summary, the Briggs & Stratton 40221 combines power, efficiency, portability, and durability into a single unit, making it a practical choice for anyone needing reliable backup power or on-the-go energy solutions. Whether for emergencies or everyday use, it delivers dependable performance that stands the test of time.
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