Winco PSS65LS-*/B - Manual (Page 6)

Page 4 1017-10 60706-144
INSTALLATION
General Information
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***** WARNING ****
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PERSONAL INJURY - Before proceeding with the instal-
lation, 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 standard or accoustical housing for outdoor installa-
tion. 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 contractor to install and wire the
transfer switch. The installation must comply with all na-
tional, 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 its transfer switch rating.
Be certain they can handle the intended load and are com-
patible with the entrance voltage, phase and current rat-
ings. Plans for installation 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 service entrance installed 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 attached with special shock
mounts on the main frame. This allows the engine-genera-
tor 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 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 engine’s
requirements and assist in making you aware of the deci-
sions 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 converter mounted on the unit will handle
both vaporization of the fuel and pressure reduction. These
fuel pressures are critical, failure to provide the proper fuel
pressure can cause many problems ranging from a unit
that will not start to causing damage to the fuel system.
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 pres-
sure. Refer to the tables below for fuel line size, fuel
consumption and recommended tank size. For distances
of 50 feet and over, a two regulator fuel system is recom-
mended. 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
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 regula-
tor system is used, a fuel line size of 3/4 to 1 inch is