The Gaseous Fuel System - GE 60000 Series Installation And Start-Up Manual

The Gaseous Fuel System

The information below is provided to assist gaseous fuel
system technicians in planning installations. In no way
should this information be interpreted to conflict with
applicable fuel gas codes. Consult with your local fuel
supplier or Fire Marshall if questions or problems arise.
WARNING Propane and Natural Gas are extremely flammable
and explosive, which could cause burns, fire or
explosion resulting in death or serious injury.
• 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
convey any technical considerations that might affect their
installation plans before applying these general guidelines.
NOTICE The supplied flexible gaseous pipe is not to be installed
underground or in contact with the ground.
• The entire flexible gaseous pipe must be visible for periodic
inspection and must not be concealed within nor contact nor run
through any wall, floor, or partition.
The following general rules apply to gaseous fuel
system piping:
• The piping should be of a material that conforms
to federal and local codes, rigidly mounted and
protected against vibration.
• Piping should be protected from physical damage
where it passes through flower beds, shrub beds, and
other cultivated areas where damage could occur.
• Install the flexible, gaseous hose (B) (supplied)
between the generator Fuel Inlet port (A) and rigid
piping to prevent thermal expansion or contraction
from causing excessive stress on the piping material.
• A union (C) or flanged connection shall be provided
C
downstream from the shut-off valve to permit
removal of fuel system components.
• A manometer port should be provided (D) . A digital
manometer, P/N 19495, is available at your Briggs &
Stratton service center. When the initial test runs are
complete, the manometer is removed and the port
is plugged. The manometer port permits temporary
installation of a manometer to ensure that the
engine receives the correct fuel pressure to operate
efficiently throughout its operating range.
• 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 (E) where condensate is not likely E
to freeze.
18
B
A
D
• A minimum of one accessible, approved manual
shutoff valve (F) shall be installed in the fuel supply F
line within 6 ft (1.8 m) of the generator.
• A minimum 10 ft. (3 m) section of gas pipe between
the primary fuel regulator and the generator fuel inlet
connection (acts as accumulator for high block loads).
• A manual fuel shut-off valve located in the interior of
the building.
• Where local conditions include earthquake,
tornado, unstable ground, or flood hazards, special
consideration shall be given to increase strength and
flexibility of piping supports and connections.
• Piping must be of the correct size to maintain the
required supply pressures and volume flow under
varying generator load conditions with all gas
appliances connected to the fuel system turned on
and operating.
• Use a pipe sealant or joint compound approved for
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.
F
E
A A Generator Fuel Inlet
B Flexible Fuel Hose
B
C Union Fitting
C
D Manometer Test Port
D
E Sediment Trap E
F Manual Shut-off Valve F
D
C
B
A