Winco PSS70000 - Manual (Page 6)

Page 4 60541 60706-124
INSTALLATION
General Information
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***** WARNING ****
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PERSONAL INJURY - Before proceeding with the installation, be
sure the operation selector switch is in the "stop" position.
These engine/generator sets are available as a skid mounted
unit for indoor installation or a skid mounted unit with a stan-
dard or accoustical housing for outdoor installation. All versions
of these units must be bolted solidly to a concrete pad. The
transfer switch is mounted next to your distribution panel inside
the building. Consult a qualified, licensed electrician or contrac-
tor to install and wire the transfer switch. The installation must
comply with all national, state, and local codes.
***** CAUTION ****
EQUIPMENT DAMAGE - These units must be mounted on a
solid concrete pad to prevent air from exiting under the unit.
Allowing air to exit under the unit may cause the unit to overheat
from lack of proper air flow..
Before beginning the installation process recheck the rating of
the generator set and it’s transfer switch rating. Be certain they
can handle the intended load and are compatible with the
entrance voltage, phase and current ratings. Plans for installa-
tion should be prepared with proper attention to mechanical and
electrical engineering detail to assure a satisfactory system
installation. The information in this manual is offered only as a
guide to finalizing your installation plans. For full service
switching the A.T.S. should have a fuseable disconnect in-
stalled before the switch to protect the contacts.
ENGINE GENERATOR SET MOUNTING
The unit’s main frame should be bolted solidly to a 4 to 6 inch
thick cement pad. The engine-generator is mounted on a sub-
frame which is attacted with special shock mounts on the main
frame. This allows the engine-generator free movement without
affecting the control panel which is mounted on the main frame.
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 three (3) feet clearance on
all sides.
FUEL INSTALLATION
The fuel supply should be as close as possible to the engine.
This will reduce the installation cost of fuel runs. The informa-
tion 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 engine’s 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.
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***** WARNING ****
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FIRE HAZARD - All fuel runs should be installed by a licensed
fuel supplier.
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 fuel lock strainer mounted on
the generator rails. The fuel convertor 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. A tag is attached to the unit that specifies the
fuel, natural gas (NG) or propane vapor (LP) that the unit was set
up and tested on. A slight adjustment may be necessary on NG
depending on local BTU content. This adjustment will be
discussed later.
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 size, fuel consumption and recom-
mended tank size. For distances of 50 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 must be at
least 10 feet from the engine generator set. Any closer installa-
tion 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, a fuel
line size of 3/4 to 1 inch is generally adequate for distances up to
300 feet from the primary to the secondary regulator. (Consult
your local fuel supplier for your exact requirements). The
appropriate line size from the table below is then installed from
the second regulator to the generator set.
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***** WARNING ****
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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.