**** CAUTION ****
These units are shipped with oil. Be sure to check
oil levels before operating. See engine manufactur-
er’s instruction manual for recommended oil require-
ments before initial starting.
UNPACKING
1. Carefully remove the carton.
2. After inspecting the engine-generator and trans-
fer switch for external physical damage, check
for the following items packed inside the carton.
a. Owner’s manual.
b. Engine manufacturer’s instruction manual.
3. Remove main frame hold down bolts. (4)
4. Unit can now be lifted from shipping pallet.
INSTALLATION
General Information
******************
***** WARNING *****
******************
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. As an
option a prefab pad may be used as long as proper
attention is paid to site preparation to insure the unit
will not move after installation. The transfer switch is
mounted next to your electrical entrance or distribu-
tion panel inside or outside 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.
Before beginning the installation process check the
rating of the generator set and its transfer switch
rating. Be certain they can handle the intended
load and are compatible with the enterance voltage,
phase and current ratings. Plans for installation
should be prepared with proper attention to me-
chanical and electrical engineering detail to assure
a satisfactory system installation. The information
in this manual is offered only as a guide to finializing
your installation plans.
e. Always avoid hot mufflers, exhaust manifolds,
and engine parts. They can cause severe
burns instantly.
f. Installing a generator set is not a “Do-it-your-
self” project. Consult a qualified, licensed elec-
trician or contractor. The installation must com-
ply with all national, state, and local codes.
TESTING POLICY:
Before any generator is shipped from the factory, it
is fully checked for performance. The generator is
loaded to its full capacity, and the voltage, current
and frequency are carefully checked.
Rated output of generators is based on engineering
tests of typical units, and is subject to, and limited
by, the temperature, altitude, fuel, and other condi-
tions specified by the manufacturer of the applicable
engines.
INTRODUCTION AND
DESCRIPTION
The package standby system includes all times
necessary for a completely automatic standby power
system as standard equipment.
DESCRIPTION
The package standby system is designed to au-
tomatically provide standby power to unattended
loads during electrical outages. Upon an interruption
of normal electrical service the packaged standby
system electrical control circuits will automatically
start the engine. The generator will produce electri-
cal power and the Automatic Transfer Switch (ATS)
will automatically transfer the electrical loads to the
generator set. Upon restoration of normal electri-
cal service the emergency transfer switch will sense
return of the normal commercial power. The Auto-
matic Transfer Switch will retransfer the load back to
the normal commercial power source. The engine
control circuits will begin a cool-down cycle, after
which the fuel supply will be shut off and the engine
ignition system disabled.
These packaged standby systems consist ot two
major components:
1) AUTOMATIC TRANSFER SWITCH
A wall mounted ASCO 165 Automatic Transfer
Switch (ATS) designed for inside installation. The
transfer switch is UL1008 approved. A fourteen day
electronic exerciser circuit is installed in the ATS
as standard equipment. The ATS also contains the
power failure sensing circuitry necessary to start and
stop the engine generator set. The transfer switch is
also equipped standard with a 3 second start delay,
and a 15 second transfer delay to allow the engine
to warm up before transferring the load to the gen-
erator. When the line power is restored the ATS has
a 5 minute retransfer delay to allow the incoming util-
ity to stabilize before transferring back to line power
and then an additional 1 minute engine cool down
delay before the engine shuts down. Read and
understand the ATS owners manual before installing,
servicing or operating the transfer switch.
UL Automatic Transfer Switch Sizes
UNIT LINE SIDE GENERATOR
CONTACTOR SIDE CONTACTOR
ULPSS12H2W 100 AMPS 100 AMPS
200 AMPS 200 AMPS
Both the 100 amp and the 200 amp UL Switches are
available in single phase only.
2) ENGINE / GENERATOR
The engine generator set consists of a Honda, twin
cylinder, four cycle air cooled engine. The engine is
factory equipped to run on LP or NG fuel. The en-
gine operates at 3600 rpm and frequency regulation
is maintained by the engine governor within 4 cycles
variation (62.5 Hz - 58.5 Hz) from no load to rated
load. The generator is a brushless, single bearing,
direct drive, rotating field design. The generator is
connnected to the engine’s tapered (quill) crankshaft
extension. The engine generator is mounted in a
drip-proof enclosure for outside installation. Con-
nection boxes and terminal blocks are provided for
all customer connections (both AC output and DC
control). A customer supplied 12 volt 500 CCA (BCI
group 26) battery is required to complete the instal-
lation.
** NOTICE **
This unit will automatically transfer if a power outage
occurs while running in an exercise mode.
SPECIFICATIONS
GENERATOR
MODEL WATTS* VOLTS AMPS HZ PH RPM
PSS12 12000 120/240 50.0 60 1 3600
* Derate 16% for Natural Gas operation. Derate to
7192 watts when operating on Natural Gas pressure
of 4-6 inches water column. Derate 3.5% per 1000
feet elevation above sea level.
FUEL CONSUMPTION
NATURAL GAS
1000 BTU/CU FT
LP VAPOR
2520 BTU/CU FT
CF/HR 190 76.6
BTU/HR 190,000 194,000
GAL/HR N/A 2.1
LBS/HR* N/A 9.0
* Based on full load operation.
ENGINE SPECIFICATIONS
Refer to engine operating and maintenance instruc-
tions.
** NOTICE **
When unpacking the generator set, be sure to in-
spect it carefully for freight loss or damage. If loss or
damage is noted at the time of delivery, require that
the person making the delivery make note of the loss
or damage on the freight bill, or affix his signature
under the consignor’s memo of the loss or damage.
Contact the carrier for claim procedures.
When loss or damage is noted after delivery, segre-
gate the damaged material, and contact the carrier
for claim procedures. Be sure to retain the packag-
ing material for carrier inspection.
“Concealed Damage” is understood to mean dam-
age to the contents of a package which is not evi-
dent at the time of delivery by the carrier, but wheich
is discovered later. The carrier or carriers are
responsible for merchandise lost or damaged in tran-
sit. The title to goods rests with the consignee when
generators are shipped F.O.B. factory, and only the
consignee can legally file a claim. Please note, most
carriers have a time limit for filing concealed damage
claims.