Winco PSS20000 - Manual (Page 6)

PAGE 4
INSTALLATION
General Information
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***** WARNING ****
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Before proceeding with the installation, be sure the
operation selector switch is in the stop position.
These engine/generator sets are designed to be mounted
on a concrete pad outdoors only. The transfer switch
is mounted next to your electrical entrance or distribu-
tion panel inside the building. Consult a qualified,
licensed electrician or contractor to install and wire the
transfer switch. The installation must comply with all
national, state and local codes.
***** CAUTION ****
EQUIPMENT DAMAGE - The PSS20000 must be
mounted on a full length 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 compatible with the entrance voltage, phase
and current ratings. 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.
ENGINE GENERATOR SET MOUNTING
The unit’s main frame should be bolted solid to a four to
six inch thick cement pad. The engine-generator is
mounted on a sub-frame which is isolated with special
shock mounts on the main frame. This allows the
engine-generator to vibrate without affecting the
control panel on the main frame.
Do not install any shock mounts between the base frame
and the concrete pad. 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. Particular attention should
be paid to the direction of the hot air discharge and
exhaust discharge. Unit location should be such that
these discharges are not allowed to be drawn back in
through an open window or door.
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 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). For all vapor
fuel systems the delivery pressure of the fuel to the
fuel solenoid on the unit must be four to six ounces psi
(per square inch) or 7 to 11 inches W.C. (Water
column). PSS20000 equipped with liquid withdrawal
kits must be connected to the liquid withdraw valve on
the tank. Full tank pressure must be delivered to the
3/8” fuel fitting on the fuel lock strainer at the genera-
tor. 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 dis-
cussed later.
Line Size
Unit location will determine the size of fuel line that is
required to supply the engine with a constant fuel
pressure and volume. 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 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 four (4) to 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