Winco PSS8B2W/C - Manual (Page 11)

PAGE 9 8008-30 60706-182
WINCO UL ATS (ASCO165)
See the ASCO installation manual for additional details
on proper wiring of the Automatic Transfer Switch.
The standby generator terminals in the A.T.S are marked
“ALTERNATE L2 & L6”. The “hot” leads G1 and G3 from
the generator are connected to the terminals L2 & L6.
The normal line power terminals in the A.T.S. are marked
“PREFERRED - L1 & L5”. The “hot” line power leads are
L1 and L3 from your normal power supply are connected
to terminals L1 and L5.
The load terminals in the A.T.S. are marked “LOAD - L3 &
L7”. The leads to the load distribution panel are connect
to terminals L3 & L7.
The neutral leads from all three locations are connected
to the isolated terminal lugs on the sidewall of the
cabinet. This terminal block is labeled “NEUTRAL” and
the terminal lugs are mounted on red isolation standoffs.
The ground leads from all locations are connected to the
grounded terminal lugs, also on the side wall. This set
of terminals is labeled “GROUND”.
INSTALLATION NOTES
The load current carrying wires (L) and (T) must be sized
to handle the maximum load current without excessive
voltage drop. By code, the wire must be heavy enough to
handle the full current rating of the main line circuit-
breaker (or fuse) in the entrance (or sub-panel) protect-
ing the contactor switch.
All wires should be installed in rigid or flexible conduit.
(Knockouts are provided in the control box)
Because of the many different types of service, feeder,
and distribution equipment, no specific wiring instruc-
tions can be provided. It is, however, recommended that
only copper wire be used. In all cases it is essential that
while the load is connected to the generator, there can be
absolutely no feedback from the generator to the power
line or the power line to the generator. When properly
installed, the normal A.T.S. control and safety systems
will eliminate all paths for feedback. Check with your
local electrical inspector on applicable local, state and
federal codes.
*************
***** WARNING *****
*************
A service disconnect must be installed in front of the
A.T.S. panel as the A.T.S is not service entrance rated.
This will allow you to test the generator under load.
Should you ever have to work on the switch, you will be
able to disconnect the power and work on the switch cold
without having the power company pull your meter.
To wire the automatic transfer switch into the existing
wiring, first determine which circuits will be on the
emergency load circuit. If the entire load is to be trans-
ferred, the transfer switch can be wired in directly after the
watt-hour meter and the service entrance, providing the
service entrance ampere rating is within the transfer
switch’s rated capability.
If only specific circuits are to be powered under emer-
gency power failure conditions, an additional distribution
panel designated “emergency distribution panel” must
be installed.
All selected emergency circuits are removed from main
distribution panels and reinstalled in the emergency
distribution panel. Suggested circuits: freezer, refrigera-
tor, furnace, emergency lights, sump pump, emergency
outlet circuits, etc. Total running load must not exceed
generator rating.
D.C. ELECTRICAL
INTERCONNECTION
*******CAUTION******
Never run the AC and DC wiring in the same conduit.
ASCO 165 UL SWITCH
Your DC connection points in the ASCO 165 UL ATS are
on the terminal block in the upper right hand corner of the
ATS panel. The terminal block is numbered 1 through 9.
You will be using terminals 4 and 5, wire Start 23 will
connect to terminal #5 and wire Start 1 will connect to
terminal #4. See page 15 for a connection diagram.
INITIAL START UP
*************
***** WARNING *****
*************
DO NOT jump start these engine generator sets. Starting
these units on a low battery or jump starting them will
cause damage to the engine control module.
Use the following check list to verify correct installa-
tion before starting the engine:
F Engine oil.* Check level & fill as required with
proper grade/qty.
F Unit mounting base properly bolted down.
F
Clearance for service and maintenance on all
sides.
F Proper fuel line material and size.
F All fuel line connections tight.
F
Fuel line protected and a moisture trap installed
(may be required for N.G.).
F LP/NG pressure O.K. 4-6 Oz. (7-11" WC).
F Battery connections clean and tight.
F Battery fully charged.
F
All A.C. and D.C. wiring installed and properly
protected.
* Refer to engine owners manual for proper
levels and type.
After completing the above checklist, the engine genera-
tor set is ready for the initial start-up test.