Use and Care Manual

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Reproduction

Fuel Factors

An important consideration affecting the entire installation

is the type of fuel used by your generator. The system was

factory tested and adjusted using either natural gas or liquid

propane (LP vapor). For proper engine function, factors

that are inherent to each of these fuels, your location and

the duration of possible utility interruptions are important

considerations in the following fuel guidelines:

• Use clean, dry fuel, free of moisture or any

particulate material. Using fuels outside the

following recommended values may cause

performance problems.

• In engines set up to run on propane (LP), commercial

grade HD5 propane with a minimum fuel energy of

2500 BTUs/ft

with maximum propylene content of

5% and butane and heavier gas content of 2.5% and

minimum propane content of 90%.

Natural gas rating will depend on specific fuel but typical

derates are between 10 to 20% off the LP gas rating.

Natural gas or LP engines are certified to operate on natural

or liquid propane gas. The emissions control system for this

engine is EM (Engine Modifications).

Power Decrease at High Altitude or High Temperature

Air density is less at high altitudes, resulting in less available

engine power. Specifically, engine power will decrease 3.5%

for each 1,000 feet (300 meters) above sea level and 1% for

each 10° F (5.6°C) above 77°F (25°C). Make sure you and

your installer consider these factors when determining total

generator load.

WARNING Propane and Natural Gas are extremely

flammable and explosive, which could

cause burns, fire or explosion resulting

in death, serious injury and/or property

damage.

• The residential generator is equipped with an automatic

safety gas “fuel shut-off” valve.

• DO NOT operate the equipment if the “fuel shut-off” valve

is missing or inoperative.