SF125 INSTALLATION INSTRUCTIONS
1. Voltage Verification
Prior to product installation, verify that the voltage rating of the intended electrical service matches the voltage rating of the unit to be installed. Warning: serious injury or damage can result from installing a product with an improper voltage rating. Contact Current Technology if voltage ratings are not identical. For WYE connected systems, verify neutral-ground bond on secondary side of upstream distribution or service entrance transformer. Warranty void if SF125 is connected to incorrect voltage configuration or if neutral-ground bond is not present in WYE configured systems.
2. Installation Location
To minimize installed system impedance, install SF125 in a location that minimizes electrical wire bends and wiring distance from point of connection.
Utilizing the mounting feet and hardware supplied with the unit, mount the SF125 securely and rigidly to building surface or structural member. Attach conduit and pull wires as necessary.
4. Electrical Connections
VERIFY THAT POWER IS DE-ENERGIZED ON ELECTRICAL LINES ASSOCIATED WITH INSTALLATION OF THIS UNIT. SF125 units without integral overcurrent protection must be installed in parallel with the electrical distribution system via a fused disconnect switch or circuit breaker. Fuses or circuit breakers rated for 60A or less must be used. Use #4 AWG or larger copper conductor for parallel phase conductor connections. Use a #2 to #4 AWG copper wire for neutral (N) and ground(EG) connections (no neutral (N) for DELTA configurations). Tighten lugs securely to a maximum torque of 52 in-lb. Caution: B phase must be the high leg for high leg DELTA configured products installed on high leg DELTA systems. Contact factory for other voltage configurations not listed on SF125 technical data sheet.
5. Fused Disconnect Option
SF125 models are available with integral fused disconnect switch that permits direct connection in parallel with the electrical distribution system without utilizing an additional external fused disconnect switch or circuit breaker. Use #4 AWG copper wire for parallel phase conductor connections to fused disconnect terminals (L1, L2, L3). Use a #2 to #4 AWG copper wire for neutral (N) and ground (EG) connections (no neutral (N) for DELTA configurations). Tighten lugs of fused disconnect to a maximum torque of 35 in-lb and 52 in-lb. for neutral (N) and ground (EG).
6. Remote Monitor Contacts Option
SF125 models are available with two sets of form C remote monitor dry contacts which can be connected to building management systems or remote annunciation alarm panels. To wire contacts, locate the output terminals mounted on the dry contact circuit board. Each set of contacts may be wired independently. Each set of form C contacts include common (C), normally open (NO) and normally closed (NC) contacts. For normally open operation under energized conditions, connect the normally open terminal and common terminal to the monitoring input. For normally closed operation during energized conditions, connect the normally closed terminal and common terminal to the monitoring input. Upon loss of power to any or all phases, contacts will change to alarm state.
7. StatusWatch Option
SF125 models are available with StatusWatch diagnostic monitoring. StatusWatch includes battery backed-up audible alarm with test and disable functions, two sets of form C remote monitor dry contacts and optional disturbance counters. Battery is field replaceable, standard 9V alkaline. To activate battery, remove isolation strip between battery and terminal and push battery firmly into battery holder terminals.
To test audible alarm, press alarm test push-button: alarm should sound and alarm/test indicator should flash. Alarm may be silenced by moving toggle switch into upper position; alarm disable indicator will illuminate.
To wire dry contacts, locate two gray terminal blocks on the cabinet door interior. Each set of contacts can be wired independently. For normally open operation under energized conditions, connect the normally open terminal and common terminal to the monitoring input. For normally closed operation during energized conditions, connect the normally closed terminal and common terminal to the monitoring input. Upon loss of power to any or all phases, contacts will change to alarm state.
StatusWatch is available with dual disturbance counter(s) which measure the number of Line-to-Neutral and Line-to-Ground transients occurring in WYE configurations. For DELTA systems, a single counter measures Line-to-Line transients. To reset counters, remove connector on the back of each counter and short pins 1 and 3.
8. Before energizing SF125
Check all connections to ensure solid electrical connection. Tighten any loose connections to appropriate torque values.
Measure voltage Line-to-Line, Line-to-Neutral, Line-to-Ground and Neutral-to-Ground to ensure that it does not exceed ±10% of the nominal rated voltage for the unit. Contact factory if these tolerances are exceeded.
9. Final Instructions
If all voltages are in tolerance, replace the cover of the unit and tighten fastening screws. Apply power to the unit by engaging the appropriate fused disconnect switch or circuit breaker. Illumination of status lights indicates proper function.
10. DTS-2 Test PointDisconnect wire harness connector between suppression module and diagnostic monitoring located on interior of SF door before testing the unit with the optional DTS-2 Diagnostic Test Set. Reconnect upon completion of testing.
|Ask an Engineer if you have any questions regarding this or other Current Technology products.|
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