6
Connection
Plug your UPS's line cord into an electrical outlet.
Your UPS must be connected to a dedicated circuit of sufficient amperage.
Note! After you connect the UPS to a live AC power source, the UPS (in “STANDBY
MODE”) will automatically charge its batteries, but will not supply power to its
outlets until it is turned on.
Model SU8000RT4U has a hardwire input instead of an input cord/plug.
Remove the circular knockouts to route the input cabling to the AC input
terminal block. Unscrew and remove the utility input terminal block cover
to access the AC input terminals. Review the hardwiring cautions below
before attempting to connect the UPS input.
Hardwiring Cautions (Model SU8000RT4U Only)
• Wiring must be done by a qualified electrician.
• When making wiring connections, observe the cable connection regulations
appropriate to your area [e.g. National Electrical Code (NEC) in the U.S.] at all
times. Be sure to install an easily accessible disconnect switch in your installation
wiring so you may cut off the AC input of the UPS during fires and other
emergencies. Ensure that cables are fitted with cable sleeves and are secured by
connector clamps. Tighten connections with a torque of not less than 24-28 inch-
pounds (2.7-3.2 NM).
• Make sure that your equipment is properly grounded.
• Using cables of improper size may damage your equipment and cause fire hazards.
Choose appropriate cabling and protection circuits to make wiring connections.
Ground conductors must be the same size and type as the power conductors used.
• See the UPS case for input and output ratings and refer to National Electrical Code
(NEC) guidelines for proper wire gauge and output protection circuit requirements.
Plug your equipment into your UPS.
Your UPS is designed to support electronic equipment only. You will overload your UPS
if the total VA rating for all the equipment you connect exceeds the UPS's Output
Capacity. Do not connect household appliances or laser printers to the UPS's outlets. To
find your equipment's VA ratings, look on their nameplates. If the equipment is listed in
amps, multiply the number of amps by the input voltage (208V, 240V or 120V) to
determine VA. (Example: 1 amp × 120V = 120 VA).
Turn the UPS on.
Press the UPS's “ON” Button until you hear a beep to begin inverter operation. Your
UPS will now provide output power through its AC outlets to connected equipment. Your
UPS will perform a brief self-test and show the results on the LCD Display . See
“Startup Self-Test” in the “Operation” section for the display sequence.*
* Cold Start: To use your UPS as a stand-alone power source when AC input power is unavailable (i.e. during a
blackout), you can “cold start” your UPS and power connected equipment from the UPS's battery. Your UPS's
battery must be at least partially charged for this operation to succeed. Press and hold the “ON” Button until you
hear a beep to cold start your UPS. The LCD Display will show ON BATTERY MODE. Battery power will begin
discharging. Some electronic equipment may draw more amps during startup; when cold starting, consider
reducing the initial load on the UPS.
To Turn the UPS System OFF: Press the UPS's “OFF” Button until you hear a beep.
The UPS will stop providing output power through its AC outlets. The LCD Display
will show “STANDBY MODE.” The UPS will continue to automatically charge its
batteries as long as AC input power is present. To completely deactivate the UPS,
unplug the UPS's line cord when the UPS system is in standby mode.
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Note: The output voltage is set at 208/120V~ when the UPS is shipped from the factory. If you need to change
the output voltage of the UPS, refer to “Output Voltage Selection” in the “Operation” section. You should select
the correct output voltage before connecting your equipment to the UPS.
