Product Manual

11075-00
8
60706-208
Shown below is a diagram of a natural gas (NG)
installation.
Reference numbers 2 through 4 in the diagram
above are system parts supplied by the customer.
Reference number 4 is on the generator.
Below are tables of the fuel pressure readings at
each reference in the system.
FUEL PRESSURE TABLES
Single Low Pressure Regulator (LP Vapor only)
REF # 1 3 4
UNIT OFF LINE PSI 7-11 IN
4-6 OZ
7-11 IN
4-6 OZ
STARTING LINE PSI 7-11 IN
4-6 OZ
7-11 IN
4-6 OZ
NO LOAD LINE PSI 7-11 IN
4-6 OZ
7-11 IN
4-6 OZ
FULL
LOAD
LINE PSI 7-11 IN
4-6 OZ
7-11 IN
4-6 OZ
Two (2) Regulator System (LP Vapor only)
REF # 1 2 3 4
UNIT
OFF
LINE PSI 10-15
LBS
7-11 IN
4-6 OZ
7-11 IN
4-6 OZ
START-
ING
LINE PSI 10-15
LBS
7-11 IN
4-6 OZ
7-11 IN
4-6 OZ
NO
LOAD
LINE PSI 10-15
LBS
7-11 IN
4-6 OZ
7-11 IN
4-6 OZ
FULL
LOAD
LINE PSI 10-15
LBS
7-11 IN
4-6 OZ
7-11 IN
4-6 OZ
Natural Gas
REF # 2 3 4
UNIT OFF 2 PSI 7-11 IN
4-6 OZ
7-11 IN
4-6 OZ
STARTING 2 PSI 7-11 IN
4-6 OZ
7-11 IN
4-6 OZ
NO LOAD 2 PSI 7-11 IN
4-6 OZ
7-11 IN
4-6 OZ
FULL
LOAD
2 PSI 7-11 IN
4-6 OZ
7-11 IN
4-6 OZ
LP TANK SIZING
Required LP tank size for LP Vapor withdrawal
operating at various outside temperatures given in
degrees Fahrenheit (Celsius).
TANK TEMPERATURE TANK SIZE
60° F (16° C) 150 GALLON
32° F (0° C) 250 GALLON
0° F (18° C) 500 GALLON
-20° F (-29° C) 1000 GALLON
LP/NG FUEL CONVERSION
The ULPSS12H4W/E generator sets have been
tested on NATURAL GAS prior to shipment. If you
are going to use them on LP vapor, follow the pro-
cedures in FUEL INSTALLATION. See Page 6.
INSTALLING THE BATTERY
**** CAUTION ****
In the following battery installation procedure, check
to be sure the selector switch remains in the “off”
position. This should be your last step before initial
start-up.
A customer supplied twelve-volt battery is required to
complete the installation. Installation of the high-
est CCA rated battery, within the correct BCI group
(size), will increase cold weather starting perfor-
mance. Gel batteries should not be used with the
battery tender installed in the generator enclosure.
Model Voltage BCI Group MINIMUM
CCA Rating
ULPSS12H4W 12 26 500
Installation and servicing of batteries must be per-
formed or supervised only by personnel knowledge-
able of batteries and the required precautions. Keep
unauthorized personnel away from batteries.