7
3240
60706-236
The fuel line used to connect the supply line to the
demand regulator must be a locally approved flexible
fuel line. Products used will vary in different regions
depending on availability and local codes. Consult
with your local fuel supplier to ensure complete com-
pliance with ALL codes.
1. Remove the plastic cover plug from the demand
regulator.
2. Connect the flex fuel line to the demand regulator
or the optional fuel solenoid..
DANGER: PERSONAL INJURY
Do not use galvanized pipe in the fuel line runs.
The galvanized coating will become eroded and
flake off, causing possible obstruction or damage
to the regulator or fuel valve. The obstruction could
cause an inoperative engine or an explosive fuel
leak.
Size of pipe required for generators operating on
natural gas/LP gas.
Length of Fuel Line* Fuel Line Size
less than 25 feet
3/4 inch black pipe
25 to 100 feet
1 inch black pipe
over 100 feet
not recommended**
*allow an additional 3 feet for each standard elbow.
Do not use ‘street ells’ (restrictive)
** Consult factory for fuel runs over 100 feet.
DANGER! - FIRE - PERSONAL INJURY -
Be careful when sealing gas joints. Excessive
sealing compound can be drawn into the solenoid,
regulator or carburetor causing an engine malfunc-
tion or dangerous fuel leak
.
FUEL CONSUMPTION (Full Load)
Gasoline
1.67 Gal/HR
LP Vapor
2.2 Gal/HR
200,932 BTU/HR
Natural Gas
200 cu ft/hr
200,000 BTU/HR
FUEL PRESSURE
Correct fuel pressure cannot be stressed enough.
The most common cause for inoperative systems is
an inadequate or incorrect fuel pressure. Power and
performance of the engine is in direct relation to the
correctness of the fuel system. Shown below is a
diagram of a typical L.P. or N.G. installation.
Reference numbers 1 through 3 in the diagrams
above are system parts supplied by customer.
Reference number 4 is the engine generator set.
Below is a table of the fuel pressure reading at each
reference in the system.
Fuel Pressure Table
Single Regulator (L.P. Vapor only)
1
3
4
UNIT OFF
TANKPSI
7-11 in
7-11 in
4-6 oz
4-6 oz
STARTING
TANK PSI
7-11 in
7-11 in
4-6 oz
4-6 oz
NO LOAD
TANK PSI
7-11 in
7-11 in
4-6 oz
4-6 oz
FULL LOAD
TANK PSI
7-11 in
7-11 in
4-6 oz
4-6 oz
Two (2) Regulator System (L.P. Vapor only)
1
2
3
4
UNIT OFF
TANK PSI 10-15 lbs
7-11 in
7-11 in
4-6 oz
4-6 oz
STARTING
TANK PSI 10-15 lbs
7-11 in
7-11 in
4-6 oz
4-6 oz
NO LOAD
TANK PSI 10-15 lbs
7-11 in
7-11 in
4-6 oz
4-6 oz
FULL LOAD
TANK PSI 10-15 lbs
7-11 in
7-11 in
4-6 oz
4-6 oz
