Briggs & Stratton 18000, 20000 manual No leakage is permitted

•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 an approved pipe sealant or joint compound 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:

The home generator engine is fitted with a fuel mixer system that meets the specifications of the California Air Resources Board for “tamper-proof” fuel systems.

•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.

•Natural gas fuel supply pressure at the generator’s fuel inlet port should be between 5 to 7 inches of water (in. W.C.) at full load.

•LP gas fuel supply pressure should be 11 to 14 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 or LP gas. The unit cannot be converted from natural gas to LP gas or vice versa.

It is recommended that the fuel connection incorporate the following components:

•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 local Briggs & Stratton service center.