7
2210-00
60706-237
You need to run a 3/4 inch line or larger from the sec-
ondary regulator to the engine-generator set. When
a two (2) regulator fuel system is used, a fuel line
size of 3/8 inch is generally adequate for distances
up to 300 feet. The line size from the table below
applies to the distance from the second regulator to
the demand regulator.
A positive fuel shut-off de-
vice must be installed in the fuel line close to the
engine generator set.
This may be either a lockable
manual shut-off valve available from your local fuel
installer, or a 12 volt DC fuel solenoid valve. This
optional 12 volt DC valve is available through your
local Winco dealer.
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 insure complete com-
pliance with ALL codes.
1. Remove the pipe plug from the demand regulator.
2. Connect the flex fuel line to the demand regulator
to 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 malfunction
or dangerous fuel leak
.
FUEL CONSUMPTION (Full Load)
Gasoline
1.63Gal/HR
LP Vapor
1.9 Gal/HR
173,850 BTU
Natural Gas
180 cu ft/hr
180,000 BTU
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
block diagram of a typical L.P. or N.G. installation.
Reference numbers 1 through 3 in the block dia-
grams 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
