Delta GR150 Operations Instructions Page 9

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60708-153
Page 7
1285-00
Do not shock mount the main frame. Engine vibration will be
transmitted to the control panel causing erroneous start/stop
cycles and premature control failure.
The unit should be mounted to allow for ample working room
around it. A general rule to follow is five (5) feet of clearance on
all sides. (Code NFPA 37)
FUEL INSTALLATION
The fuel supply should be as close as possible to the engine.
This will reduce the installation cost of fuel runs. The information
in this manual is offered to assist you in providing the proper fuel
for your engine. However, this information is only provided to
inform you of the requirements and assist in making you aware of
the decisions you must make. In no case should the instructions
or information provided be interpreted to conflict with any local,
state or national codes. If in doubt, always consult your local fire
marshal or gas supplier.
**************
***** WARNING ****
****************
FIRE HAZARD - All fuel runs should be installed by a licensed
fuel supplier.
FUEL CONSUMPTION
The actual fuel consumption of each model is contained on the
individual specification sheet for that model. These individual
sheets can be down loaded from the WINPOWER web site at
"winpowerinc.com". If you are not able to download the informa-
tion or can not find it on the web site please contact the WIN-
POWER Service department at 507-357-6707 for assistance.
L.P. TANK SIZING
Minimum required L.P. Tank size for L.P. Vapor withdrawal
operation varies depending on your outside temperatures. Once
you have your units LP requirement contact your local LP supplier
to determine your minimum tank size requirements based on your
lowest operating temperature. Buried tanks can be considerable
smaller than tanks above ground as the bottom on the tank will
enjoy the natural heat for the ground even during extremely cold
periods.
Connect the fuel supply to the inlet of the fuel solenoid (see table
for recommended line size). The pressure at the secondary
demand regulator must be four to six ounces psi (per square
inch) or 7 to 11 inches W.C. (Water column) for vapor withdrawal
units. On units equipped with liquid withdrawal fuel systems full
tank pressure is plumbed to the fuellock (solenoid) strainer
mounted on the generator rails. The fuel converter mounted on
the unit will handle both vaporization of the fuel and pressure
reduction.
INSTALLING THE FUEL LINE
** NOTICE **
The engine generator sets are properly adjusted before they
leave the factory for a specific fuel, either N (natural gas), P
(liquid propane vapor) or L (liquid withdrawal propane). This fuel
type is noted in your model number.
Line Size (vapor system)
Unit location will determine the size of fuel line that is required to
supply the engine with a constant fuel pressure. Refer to the
tables below for fuel line diameter. For distances of 25 feet and
over, a two regulator fuel system is recommended. This is
accomplished by installing a primary regulator at the tank which
will reduce the tank pressure down to 10 to 15 lbs. A secondary
regulator is installed to further reduce the fuel pressure to the
required six (6) oz. operating pressure. This secondary regulator
should be at least 10 feet from the engine generator set. This will
allow some storage of fuel and make it easier for the engine to
accept load changes. If the second stage regulator is mounted
directly on the unit the regulator may have trouble adjusting to
large load increases during cold weather. Any closer installation
will require a larger line be installed to provide a fuel reservoir. If
this is not done, the demand regulator on the unit and the
pressure regulator in the fuel line will interfere with each other.
When this two (2) stage regulator system is used, consult your
local fuel supplier for your exact requirements). The appropriate
line size from the table below is then installed from the secondary
regulator to the generator set.
*************
***** WARNING ****
*************
PERSONAL DANGER - Do not use galvanized pipe in fuel line
runs. The galvanized coating can become eroded and flake off,
causing possible obstructions in the regulator or fuel valve. The
results could range from inoperative engine start to hazardous
fuel leaks.
Size of fuel line normally required for generators operating on
NATURAL/LP gas:
MAXIMUM PROPANE CAPACITIES LISTED ARE BASED ON
1/2" W.C. PRESSURE DROP AT 11" W.C.
DISTANCE LINE SIZE
IN FEET 1.25" 1.5" 2" 3" 4"
10 2,205 3,307 6,221 17,990 36,710
20 1,496 2,299 4,331 12,510 25,520
30 1,212 1,858 3,465 10,110 20,620
40 1,039 1,559 2,992 8,481 17,300
50 913 1,417 2,646 7,708 15,730
60 834 1,275 2,394 6,936 14,150
80 724 1,086 2,047 5,908 12,050
100 630 976 1,811 5,309 10,830
Capacities in 1000 BTU/HR
**** CAUTION ****
EQUIPMENT DAMAGE - Be careful when sealing gas line joints.
Excessive sealing compound can be drawn into the solenoid,
regulator or carburetor causing an engine malfunction.
FUEL PRESSURE (vapor system)
Correct fuel pressure cannot be stressed enough. The most
common cause for inoperative systems is an inadequate or
incorrect fuel pressure. 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.
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