Fuel Factors; Power Decrease At High Altitude Or High Temperature - Briggs & Stratton 40336 Manual Del Operador

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Fuel Factors

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.
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 3 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.
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