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IIS-350-U
UNINTERRUPTIBLE
P.O. BOX 11846 TUCSON, AZ 85734
(520) 294-3292 • FAX (520) 741-2837
www.iotaengineering.com
350W UNIT INVERTER EQUIPMENT
INSTRUCTION MANUAL
IMPORTANT SAFEGUARDS
When using electrical equipment, basic safety precautions should always be followed, including the following:
READ AND FOLLOW ALL SAFETY INSTRUCTIONS
1. DO NOT USE OUTDOORS.
2. Do not mount near gas or electric heaters.
3. Do not use this equipment for other than its intended use.
4. The IIS-350-U should be mounted securely and in locations and at heights where it will not readily be sub-
jected to tampering by unauthorized personnel.
5. The use of accessory equipment and replacement parts not recommended by IOTA Engineering, LLC may
cause an unsafe condition and void the warranty.
6. The AC voltage rating of this equipment is specified on the product label. Do not connect the
IIS-350-U equipment to any other voltage.
7. The IIS-350-U uses sealed valve regulated lead acid batteries. Batteries can be punctured if not handled
properly, therefore use caution when servicing batteries. In the event battery acid comes in contact with
eyes or skin, flush with fresh water and consult a physician immediately.
8. Install in accordance with the National Electrical Code and local regulations.
9. Installation and servicing should be performed by qualified personnel.
10. Electricians and end-users need to ensure product system compatibility before final installation.
SAVE THESE INSTRUCTIONS
THIS UNIT CONTAINS A
RECHARGEABLE VALVE-REGULATED
LEAD ACID BATTERY. PLEASE
RECYCLE OR DISPOSE OF
PROPERLY.
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INSTALLATION INSTRUCTIONS
CAUTION: Before installing, make certain the A.C. power is off.
NOTE: The battery is shipped in separate packaging for ease of handling. Store the battery in a cool, dry and safe loca-
tion until ready for installation. The battery may be kept in storage for up to 3 months without recharging.
CAUTION: The IIS-350-U is a single voltage unit. It is designed for 120V input but is available in both a 120V output or
a multi-tap output model. Before proceeding with the installation, verify that the IIS-350-U model you are installing
matches both the AC supply and load fixtures voltages. Incorrect voltages will cause an unsafe condition, equipment failure, and may result in fire.
1. MOUNTING THE IIS-350-U
1) Remove the front cover of the IIS-350-U by removing the two (2) screws located at the top of cover.
2) Knock out the keyhole slots at the rear of the unit and use for mounting the IIS-350-U securely to the wall. There
is an additional round hole for a #10 screw in the cabinet. Code requires that an additional screw be used through
this hole to prevent the unit from being inadvertently lifted up off the keyhole slots. Do not drill any holes in this
unit. If a recessed junction box is to be mounted in the wall behind the unit, make sure an unswitched AC supply of proper rated voltage is extended to the box, and that the remote wiring to the emergency fixtures is also
extended to the box prior to mounting the unit. A 1/2″ conduit knockout is provided in the back of the unit for wires
to pass through. 16″ of wire should be routed into the unit from the recessed junction box. NOTE: Input and output
wires must be run in separate conduits. CAUTION: Do not drill holes into the cabinet; drill filings may damage the
unit and keep it from operating. If larger knockouts are required, use a chassis-punch through the appropriate
knockout to punch out a larger knockout.
3) If the wiring is to be external to the wall, extend both the unswitched supply and the load wires to the unit at this time.
CAUTION: The IIS-350-U must be mounted securely. Do not rely on the junction box for supporting the
weight of the unit. Mount the IIS-350-U securely to the wall using the keyhole slots provided.
ALWAYS CONSULT LOCAL CODES FOR STRUCTURAL REQUIREMENTS WHEN MOUNTING THE UNIT.
2. WIRING
1. CONNECTING THE NORMAL AC INPUT
A. For 120V supply, connect the AC line wire to the BLACK lead.
B. Connect the Neutral wire to the WHITE lead.
C. Connect the ground wire in accordance with local code. A Ground Wire is provided for this purpose.
DO NOT ENERGIZE THE CIRCUIT AT THIS TIME.
2. CONNECTING REMOTE EMERGENCY FIXTURES
A. Connect remote emergency fixtures to the wires marked ‘output.’ If installing a 120V to 120V inverter unit, the
output wires will be Violet and Gray (see FIGURE 1). If this is a multi-tap unit (see FIGURE 2), then the wires are
color-coded as follows:
Common - GRAY
Line 120V - VIOLET
Line 208V - RED
Line 240V - BLUE
Line 277V - YELLOW
Select the proper voltage lead and cap all unused leads.
NOTE: All remote circuitry is to be wired in accordance with Article 700 of the National Electric Code. Do not exceed
the total rating of the IIS-350-U. See equipment label for proper rating.
B. Connect the Fixture Supply Ground to the IIS-350-U Ground.
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