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11
• Install the flexible, gaseous hose (supplied) between
the home generator Fuel Inlet port and rigid piping to
prevent thermal expansion or contraction from causing
excessive stress on the piping material.
NOTE: 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.
CAUTION
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,
contact, or run through any wall, floor, or partition.
•
• 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.
WARNING
Propane and Natural Gas are extremely
flammable and explosive.
Fire or explosion can cause severe burns or
death.
Before placing the home generator into service, the fuel
system lines must be properly purged and leak tested.
NO leakage is permitted.
•
•
Consider the following factors when planning to install the
fuel supply system:
• A minimum of one accessible, approved manual shutoff
valve shall be installed in the fuel supply line within
6 ft (1.8 m) of the home generator. A union or flanged
connection shall be provided downstream from this
valve to permit removal of controls.
• LP gas fuel supply pressure should be 7 to 11 inches
of water (in. W.C.) at full load with all gas appliances
turned on and operating.
• Natural gas fuel supply pressure at the generator’s fuel
inlet port should be between 7 to 11 inches of water
(in. W.C.) at full load with all gas appliances turned on
and operating.
The home generator unit has been factory set to run on
natural gas. The unit can be converted from natural gas to
LP gas or vice versa using two people and special tools. See
Fuel Conversion, later in this manual.
It is recommended that the fuel connection incorporate the
following components:
• 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.
• 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 to ensure that the engine receives the correct
fuel pressure to operate efficiently throughout its operating
range.
NOTE: A digital manometer, P/N 19495, is available at your
Briggs & Stratton service center.