Natural Gas (NG)
Units are tested with natural gas before they leave the factory. If natural gas is to be used, no adjustments are required.
When supplying natural gas as the operating fuel, provide fuel with a minimum of 1000 BTU/ft3 at inlet pressures between 6" and 11" of water column (4 - 6 oz). Failure to meet these minimums will cause the generator to run poorly and/or may limit output to values below nameplate value. If fuel with these qualities is not available, contact the customer service center.
Refer to the Fuel Consumption Table on page 14 for fuel flow requirements for the unit installed. Size all feeding piping to deliver sufficient flow above the minimum pressure of 6" water column (4 oz).
Per the National Gas Code (NFPA 54 - ANSI 2223.1), a manual shutoff valve in the fuel supply line to the generator is recommended.
Propane Vapor (LPG)
In cases where liquefied propane vapor is selected as the fuel of choice, insure fuel delivery in the gaseous
state, with a minimum energy content of 2500 BTU/ft3, at inlet pressures between 6" and 11" of water column (4 - 6 oz). Fuel below these specifications may cause improper engine operation and/or failure to deliver rated generator output. Size all fuel system plumbing to provide fuel flow as given in the Fuel Consumption Table on page 14, at a minimum pressure of 7" water column (4 oz).
After completing external supply connections, follow the instructions listed below to change over to LPG.
1.Remove the front panel by inserting the key into the locks located on top of the panel. and turn 1/4 turn counterclockwise to unlock. Lift the panel up and out of the base and set it aside.
2.Remove the air filter cover (A by turning the air filter cover nut (B) counterclockwise.
3.Remove the air filter (C).
4.Remove the 3 bolts (10mm) (D from the air filter base (E) and set it aside. Note: be careful not to drop the bolts into the carburetor.
5.Loosen the fuel hose clamp (F) and remove the fuel hose (G).
6.Insert the orifice (H) (included) and tighten by turning clockwise.
7.Put the fuel hose and clamp back on and tighten the clamp.
8.Place the air filter base back onto the carburetor and tighten the 3 bolts.
9.Place the air filter back onto the center stud.
10.Replace the air filter cover and air filter nut and tighten.
11.Install the panels back onto the generator by placing the bottom of the panel onto the base and pushing it up into place. Lock the panel by inserting the key into the locks and turning 1/4 turn clockwise.
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