Owner`s manual

16
NG LP
FUEL KNOB
FUEL KNOB
11-20kW GENERATORS
8 kW GENERATOR
ORANGE FUEL
CONVERSION KNOB
FUEL KNOB LOCATIONS SHOWN FROM GENERATOR AIR BOX SIDE VIEW
Figure 5.1 — Fuel Conversion Knob Location for Single and Twin Cylinder Generators
5.2 FUEL REQUIREMENTS AND RECOMMENDATIONS
With LP gas, use only the vapor withdrawal system. This type of system uses the vapors formed above the liquid fuel in the storage tank.
The engine has been fi tted with a fuel carburetion system that meets the specifi cations of the 1997 California Air Resources Board for tamper-proof
dual fuel systems. The unit will run on natural gas or LP gas, but it has been factory set to run on natural gas. Should the primary fuel need to be
changed to LP gas, the fuel system needs to be reconfi gured. See the Fuel Conversion section for instructions on converting the fuel system.
Recommended fuels should have a Btu content of at least 1,000 Btus per cubic foot (37.26 megajoules per cubic meter) for natural gas; or at least
2,500 Btus per cubic foot (93.15 megajoules per cubic meter) for LP gas. Ask the fuel supplier for the Btu content of the fuel.
Required fuel pressure for natural gas is 3.5-7” water column (7-13mm mercury). Required fuel pressure for for liquid propane vapor is
10-12” water column (19-22mm mercury). The primary regulator for the propane supply is NOT INCLUDED with the generator.
NOTE: All pipe sizing, construction and layout must comply with NFPA 54 for natural gas applications and NFPA 58 for liquid propane
applications. Once the generator is installed, verify that the fuel pressure NEVER drops below it’s required fuel pressure rating. For fur-
ther information regarding NFPA requirements refer to their website at www.nfpa.org.
Prior to installation of the generator, the installer should consult local fuel suppliers or the fi re marshal to check codes and regulations for proper
installation. Local codes will mandate correct routing of gaseous fuel line piping around gardens, shrubs and other landscaping to prevent any
damage.
Special considerations should be given when installing the unit where local conditions include fl ooding, tornados, hurricanes, earthquakes and
unstable ground for the fl exibility and strength of piping and their connections.
Use an approved pipe sealant or joint compound on all threaded fi ttings.
All installed gaseous fuel piping must be purged and leak tested prior to initial start-up in accordance with local codes, standards and regulations.