GE 40350, 40374 manual 21

The Gaseous Fuel System
The information below is provided to assist gaseous			D
fuel system technicians in planning installations. In no
way should this information be interpreted to override
applicable fuel gas codes. Consult with your local fuel			C
supplier or Fire Marshall if questions or problems arise.		E	B
	WARNING Propane and Natural Gas are extremely flammable
	and explosive, which could cause burns, fire or		A
	explosion resulting in death or serious injury.	F
•	LP gas is heavier than air and will settle in low areas.
•	Natural gas is lighter than air and will collect in high areas.
•	The slightest spark could ignite these fuels and cause an explosion.
•	DO NOT light a cigarette or smoke.

TO THE INSTaLLER: Consult with the generator owner(s) and			•	A union C or flanged connection shall be provided
convey any technical considerations that might affect their
				downstream to permit removal of standby.
installation plans before applying these general guidelines.
			•	A manometer port should be provided D . A digital
The following general rules apply to gaseous fuel
				manometer, P/N 19495, is available at your Briggs &
system piping:
				Stratton service center. When the initial test runs are
WARNING Propane and Natural Gas are extremely flammable				completed, the manometer is removed and the port
and explosive, which could cause burns, fire or				is plugged. The manometer port permits temporary
explosion resulting in death or serious injury.
				installation of a manometer to ensure that the
• Before placing the generator into service, the fuel system lines				engine receives the correct fuel pressure to operate
				efficiently throughout its operating range.
must be properly purged and leak tested.
• No leakage is permitted.			•	Where the formation of hydrates or ice is known to
				occur, piping should be protected against freezing. The
NOTICE The supplied flexible steel fuel line is not to be installed
				termination of hard piping should include a sediment
underground or in contact with the ground.				trap F where condensate is not likely to freeze.
• The entire flexible steel fuel line must be visible for
			• A minimum of one accessible, approved manual
periodic inspection and mustNOTnot be c ncealed within
				shutoff valve E shall be installed in the fuel supply
nor contact nor run through any wall, l r, or partition.
				line within 6 ft. (180 cm) of the home generator.
• The piping should be of a materialforthat conforms
			• A manual fuel shut-off valve should be installed in the
to federal and local codes, rigidly mounted and
				interior of the building.
protected against vibration.
		REPRODUCTION
• Piping should be protected from physical damage			• Where local conditions include earthquake,
				tornado, unstable ground, or flood hazards, special
where it passes through flower beds, shrub beds, and
				consideration shall be given to increase strength and
other cultivated areas where damage could occur.
				flexibility of piping supports and connections.
NOTICE The illustration is representative of a typical
			• Piping must be of the correct size to maintain the
installation. Your installation may differ.
				required supply pressures and volume flow under
• Install the flexible steel fuel line	B (supplied) between
				varying generator load conditions with all gas
the generator fuel inlet port A	and rigid piping
				appliances connected to the fuel system turned on

to prevent thermal expansion, contraction, or any	and operating.
standby movement from causing excessive stress on
	• Use a pipe sealant or joint compound approved for
the piping material.
	use with NG/LPG on all threaded fittings to reduce the
	possibility of leakage.
	• Installed piping must be properly purged and
	leak tested, in accordance with applicable codes
	and standards.

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