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11 L�u._,_i <br />in ®An Site Preparation anastallatioll Manual <br />w <br />TLS -2501 Tank Level Sensing System <br />4. Locate the hinged, intrinsically safe barrier cover, remove 3. <br />the two screws and open the cover. (See Figure 6.) <br />5. Mount the monitor through the four mounting holes in the <br />back of the monitor case. <br />6. Connect power and ESA conduits In appropriate <br />knockouts. <br />4. <br />Figure 6. Barrier Cover <br />C. POWER WIRING CONNECTIONS, <br />WAR N I NG: IN INSTALLATION OF THIS PRODUCT, COM- <br />PLY WITH THE NATIONAL ELECTRICAL CODE; <br />FEDERAL, STATE, AND LOCAL CODES; AND ANY <br />OTHER APPLICABLE SAFETY CODES. IN ADDI- <br />TION, TAKE NECESSARY PRECAUTIONS DURING <br />INSTALLATION, SERVICE AND REPAIR TO PRZ- <br />VENT PERSONAL INJURY, PROPERTY LOSS AND <br />EQUIPMENT DAMAGE. <br />WARNING: TURNOFF PO'4I+E R TO THE SYSTEM BEFORE <br />OPENING THE FRONT PANELS TO AVOID SHOCK <br />FROMTHE POWER SUPPLY. IN ADDITION, POWER <br />TO THE SYSTEM MUST BE TURNED OFF BEFORE <br />OPENING OR SECURING THE BARRIER COVER. <br />IF HIGH VOLTAGE IS SHORTED ACROSS ANY <br />BARRIER PROBE TERMINAL, EXPLOSION OR <br />FIRE COULD RESULT. <br />Power Supply Rating: <br />input power: (L1, N, G);120 VAC, 50/60hz, 100W Max. <br />Output power: Alarm relay contacts, resistive bad •— <br />115 VAC, 2A Max. or, 240 VAC, 2A Max. or, 24 VDC, 2A <br />'Max. <br />1. Connect with # 12 AWG (or larger) conductor the Barrier <br />Ground (Terminal 5 on the power supply wiring strip) to <br />the earth ground bus on the power panel being used to <br />supply AC line voltage to the TLS -2501 monitor. <br />Note: if connecting to a subpanei, be sure there is an Earth <br />Ground connection between the subpanei and the <br />main power panel in accordance with the National <br />Electrical Code. <br />2. Connect the power wires to terminals L1 and Non the line <br />fitter located in the monitor. <br />0 <br />F9 <br />L-_ A <br />Connect a Chassis ground wire betwefn the power panel <br />Earth Ground and the middle terminal of the tine filter <br />(Chassis Ground). This ground connection does NOT <br />provide adequate ground protectign for the barrier <br />module. The instructions contalned in Paragraph I <br />must be followed regardless of what other ground con- <br />nections are installed. ! <br />Connect the power supply wires in tale power panel to a <br />separate dedicated breaker. j <br />Check to be sure that the electrical resistance between <br />Barrier Ground ( Terminal 5) and a �nown good Earth <br />Ground is less than 1 ohm, <br />i <br />j <br />ESA (PROBE) WIRING CONNECTIONS. <br />Connect the two color -coded wires from each ESA to the <br />appropriate terminals on the barrier. (See Figure 7, "ESA <br />(Probe) Barrier Strip.") <br />Close barrier cover and tighten screw. <br />ESA (Probe) Barrier Strip <br />