Larson Electronics EXP-SD-SFC-120V-V1 User manual

EXP-SD-SFC-120V-V1
Larson Electronics, LLC Phone: [phone] Fax: [phone] www.larsonelectronics.com 1of 9
3.5W Explosion Proof Smoke Detector
C1D1 - 120V AC - Ceiling Mount - IP44 - (4) 3/4" NPT
Instruction Manual
Thank you for your purchase of the Larson Electronics EXP-SD-SFC-120V-V1.
WARNING:
READ CAREFULLY BEFORE INSTALLING FIXTURE. RETAIN THESE INSTRUCTIONS FOR FUTURE REFERENCE.
CRITICAL SAFETY INSTRUCTIONS:
•INSTALLATION SHOULD ONLY BECONDUCTED BY A QUALIFIED ELECTRICIAN IN ACCORDANCE WITH NEC AND ANY
RELEVANT LOCAL BUILDING CODES.
•RISK OFFIRE OR ELECTRIC SHOCK. FIXTURE INSTALLATION REQUIRES KNOWLEDGE OF FIXTURE'S ELECTRICAL
SYSTEMS. IFNOTQUALIFIED, CONTACT A QUALIFIED ELECTRICIAN.
•BE CERTAIN ELECTRICAL POWER IS OFF BEFORE AND DURING INSTALLATION AND MAINTENANCE.
•MAKE SURE THE SUPPLY VOLTAGE IS THE SAME AS THE FIXTURE'S RATED VOLTAGE.
•TO PREVENT WIRING DAMAGE OR ABRASION, DO NOT EXPOSE WIRING TO EDGES OF SHEET METAL OR SHARP
OBJECTS. SUITABLE FOR DAMP LOCATIONS.
IMPORTANT
READ CAREFULLY BEFORE INSTALLING THIS FIXTURE. SAVE THESE INSTRUCTIONS FOR FUTURE
REFERENCE. THE EXP-SD-SFC-120V-V1 MUST BE WIRED IN ACCORDANCE WITH NATIONAL ELECTRICAL
CODE AND ALL APPLICABLE LOCAL CODES. PROPER GROUNDING IS REQUIRED FOR SAFETY.
WE STRONGLY ENCOURAGE ONLY A LICENSED ELECTRICIAN INSTALL, OPERATE AND MAINTAIN THIS
PRODUCT. IF YOU ARE NOT QUALIFIED OR UNFAMILIAR WITH ANY ASPECT OF THIS INSTRUCTION SHEET,
CONSULT AN ELECTRICIAN. THERE ARE NO SERVICEABLE PARTS INSIDE.
WARNING: MAKE SURE POWER IS TURNED OFF BEFORE STARTING THE
INSTALLATION OR PERFORMING ANY MAINTENANCE.
RISK OF FIRE/ELECTRIC SHOCK –DISCONNECT POWER AT BREAKER BEFORE INSTALLING OR SERVICING.
RISK OF PERSONAL INJURY –FIXTURE MAY BECOME UNSTABLE OR DAMAGED IF NOT INSTALLED PROPERLY.
RISK OF BURN –ALLOW FIXTURE TO COOL BEFORE SERVICING.
WARNING
TO AVOIDTHE RISKOF FIRE,EXPLOSION OR ELECTRIC SHOCK, THIS PRODUCT SHOULD BE INSTALLED,
INSPECTEDAND MAINTAINEDBY A QUALIFIED ELECTRICIANONLY, IN ACCORDANCEWITHALL
APPLICABLEELECTRICAL CODES.
TO AVOIDELECTRIC SHOCK:
•BE CERTAIN ELECTRICAL POWER IS OFF BEFORE AND DURING INSTALLATION AND MAINTENANCE.
•PRODUCT MUST BE CONNECTED TO A WIRING SYSTEM WITH AN EQUIPMENT-GROUNDING
CONDUCTOR.
TO AVOID EXPLOSION:
•MAKE SURE THE SUPPLY VOLTAGE IS WITHIN THE VOLTAGE RATING.
•ENSURE THE MARKED T RATING IS LESS THAN THE IGNITION TEMPERATURE OF THE HAZARDOUS
ATMOSPHERE.
•DO NOT OPERATE IN AMBIENT TEMPERATURES ABOVE THOSE INDICATED ON THE PRODUCT
NAMEPLATE.
•DO NOT OPERATE IF THE LENS, CORD, SEALS, HOUSING, RECEPTACLES, ETC. IS CRACKED OR
DAMAGED. IF SO, DISCONTINUE USE AND CONTACT MANUFACTURER FOR REPLACEMENT PARTS.
•ALL FASTENERS SHOULD BE PROPERLY SEATED.
Magnetic Warning
•PEOPLE WITH PACEMAKERS SHOULD CONSULT THEIR PHYSICIAN(S) BEFORE USE.
ELECTROMAGNETIC FIELDS INCLOSE PROXIMITY TOHEART PACEMAKER COULD CAUSE
PACEMAKER INTERFERENCE OR PACEMAKER FAILURE.
•KEEP FINGERS AWAY FROM MAGNET WHEN MOUNTING ASINJURY COULD OCCUR.

EXP-SD-SFC-120V-V1
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The EXP-SD-SFC-120V-V1 from Larson Electronics is an Explosion Proof Smoke Detector that is designed for combustible
facilities. This 120V AC smoke alarm contains three sets of relays, a magnetic test switch and an LED indicator.
Constructed of polycarbonate/ABS and copper-free aluminum, the IP44 rated unit is compatible with ceiling mounting
applications. This unit has a junction box with flying leads fed through a hub.
WIRING
The EXP-SD-SFC-120V-V1 contains terminals that accept 14-18 AWG shielded stranded copper wire during installation.
Operators may access a total of four, 3/4" NPT hubs to complete electrical connections.
Standard pigtail(flying leads) wiring
We strongly encourage a licensed electrician install this product,in all locations especially in outdoor areas
where weatherproofing may be required. Universal voltage driver permits operation at 120V AC.
Warning: Check product label for correct input voltage!
Attach supply line wires to the appropriate light fixture wires as shown
in thediagram 
Secure each pair of wires according to the diagram. Utilize ajunction box or
similar device and take precautionary steps for weatherproofing all
connectionsif installed in alocation where water may come in contact with the
unit. Ensurethe unit is properly grounded and that wiring is done according to
all local and national electrical/building codes.
OPERATION
WARM UP
W hen the detector is initially powered up, a warm-up period of 1-2 seconds is allotted for
internal checks and communication. During this time, the LED is off and the current level is 3 rQA.
After the checks are completed, normal operation will be indicated by the LED flashing every four
seconds (current level is 4 mA).
If the detector is unable to reach the normal operating mode, the warm-up period may
extend to five seconds, followed by a critical fault or an advisory fault (see Table 1 for all
current levels). If the problem persists, check for any loose wiring connections, ensure that the
voltage supply is sufficient, and cycle power if necessary.
OUTPUTS
Relays
The EXP-SD-SFC-120V-V1 detector is furnished with smoke alarm, fault, and auxiliary
relays. All three relays are rated to 5 amperes at 30 Vdc.


The smoke alarm relay has a single set of terminals and normally open /
normally closed contacts, and normally de-energized operation.
The fault relay has a single set of terminals and normally open contacts,
and normally energized operation.
The auxiliary relay has a single set of terminals and normally open / normally
closed contacts, and normally de-energized operation.
IMPORTANT
The auxiliary relay functions as pre-alarm.
O to 20 mA Output
This EXP-SD-SFC-120V-V1 provides a Oto 20 mA de current for transmitting
detector status information to other devices. The circuit is wired in a non-
isolated configuration and can drive a maximum loop resistance of 300 ohms
from 12 to 17 .9 Vdc, 500 ohms from .18 to 19.9 Vdc, and 600 ohms from
20 to 30 Vdc. Table 1 defines the current levels and corresponding detector
status. The output is calibrated at the factory, with no need for field calibration.

EXP-SD-SFC-120V-V1
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
Current Level (0.3 mA) Detector Status
 
 
 
 
 
 
 
NOTE
The output of the O to 20 mA current loop is monitored by the
fault detection circuitry of the EXP-SD-SFC-120V-V1.
Therefore, an open circuit on the loop will cause the fault relay
to change state.
An alarm will normally override a fault, unless the nature of the fault impairs the ability of the detector to generate or
maintain an alarm output (i.e., loss of operating power)
INTEGRAL WIRING COMPARTMENT
All external wiring to the device is connected within the integral junction box. The detector is furnished with a maximum of four conduit
entries, with either 3/4 inch NPT or M25 threads.
LED
An LED, located on the detector (see Figure 1 ), indicates normal operation and notifies personnel of an alarm. Table 2 indicates t(le
condition of the LED for each status.
Table 2-Detector Status Indicator
 



 
 
LATCHING
A detector configured for latching operation will remain in an alarm state indefinitely, after an alarm occurs.
NON-LATCHING
A detector configured for non-latching operation will check the alarm status of the detector once every 1 O seconds. Once smoke falls
below the alarm threshold, the alarm annunciation will clear within 10 seconds.
IMPORTANT
The latching or non-latching configuration must be specified during order placement. It is not field configurable.
Only the alarm annunciation can be configured for latching operation.
CONTINUOUS SELF-TEST
During normal operation, the detector performs the Self-Test function automatically in the background once per second. During
the test, detection is not interrupted and no indication is given if the test passed. If the test fails, a critical fault will occur. If
degradation is present and approaching critical levels, an advisory fault will occur.

EXP-SD-SFC-120V-V1
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MANUAL SELF-TEST
The Manual Self-Test function will immediately check the smoke chamber optics for
9egradation. Once i(litiated, there will be a one second delay before the result of the
check is active. If tneJe is a failure, the LED will shut off immediately after the one
second test and a critical fault will occur. If the test passes, an alarm will be annunciated
while the LED remains active.
For a latching detector, the alarm will continue until power is cycled to the unit. If the
test passes, but there is degradation present and approaching critical levels, an advisory
fault will occur. For a non-latching detector the alarm will clear after 10 seconds.
Magnetic Switch
The magnetic switch i � used to initiate lhe Manual Self-Test (see Figure 3). Apply the
magnet to the exterior housing and the LED will light to indicate that the magnet is
detected. The LED will remain lit for at least one second during the test. After the initial
delay, the test status will be indicated as described in the "Manual Self-Test" section.
INSTALLATION
WARNING
All entries must contain appropriately rated plugs or fittings. It is required that each plug or fitting be wrench-
tightened to an appropriate installation torque and meet the minimum thread engagement requirements per the
applicable local standards, codes, and practices in order to retain the defined ratings. PTFE sealant or equivalent
should be used on NPT threads.
NOTE :
Detector housings must be electrically connected to earth ground. Internal' · � and external earth ground
terminals are provided. For AEx (United States Zone) installations the internal ground terminal shall be used for
the equipment grounding connection. The external terminal can be used for supplementary bonding where local
codes permit or require.
NOTE :
The EXP-SD-SFC-120V-V1 detector uses an internal Intrinsically Safe (I.S.) Barrier. Proper NEC
I.S. grounding must be ensured.
GREASE/LUBRICATION
To ease installation and future removal, all threaded covers, stopping plugs, and thread adapters must be installed using
thread lubricant. The recommended lubricant is a silicone-free grease, available from Det-Tronics.
For devices with NPT threads, Teflon tape or thread seal lubricant must be used for enhanced sealing capa_bilities.
IDENTIFICATION OF DETECTOR MOUNTING LOCATIONS
The most effective number and placement of detectors varies depending on the conditions on site. The individual designing the
installation must often rely on, experience and sound judgment to determine the detector quantity and best locations to
adequately protect the area. Note that it is typically advantageous to locate detectors where they are accessible for maintenance.
For additional information on detector location and spacing, visit the National Fire Protection Association's website
(www.nfpa.org) for the NFPA Number 72, the Standard on Automatic Fire Detectors.
PROTECTION AGAINST MOISTURE DAMAGE
It is important to take proper precautions during installation to ensure that moisture will not come in contact with the electrical
connections of the system. The integrity of the system regarding moisture protection must be maintained for proper operation
and is the responsibility of the installer.
If conduit is used, the use of proper conduit installation techniques, breathers, glands, and seals is required to prevent waler
ingress and/or maintain the explosion-proof rating.
Conduit drains must be installed at water collection points to automatically drain accumulated moisture. Conduit
breathers should be installed at upper locations to provide ventilation and allow water vapor to escape. At least one breather
should be used with each drain.
Conduit raceways should be inclined so that water will flow to low points for drainage and will not collect inside enclosures or on
conduit seals. If this is not possible, install conduit drains above the seals to prevent the collection of water or install a drain loop below
the detector with a conduit drain at the lowest point of the loop.

EXP-SD-SFC-120V-V1
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POWER SUPPLY REQUIREMENTS
Calculate the total detection system power consumption rate in watts from cold
start-up. Select a power supply with adequate capability for the calculated load. Ensure
that the selected power supply provides sufficient regulated and filtered output power for
the entire system. If a back-up power system is required, a float-type battery charging
system is recommended. If an existing source of power is being used, verify that system
requirements are met.
TRANSPORT COVER
The Transport Cover (see Figure 4) keeps dust and particles out of the smoke chamber
that may enter during transport, handling, or installation. It should remain fastened on the
detector through the installation process.
IMPORTANT
Remove the cover only after installation is complete and prior to powering
the detector for the first time.
TRANSPORT
COVER
MOUNTING LOCATION OPTIONS
Ceiling Mount
The EXP-SD-SFC-120V-V1 is intended for surface mounting. It is normally mounted on the
ceiling no less than six inches from a side wall (See Figure 5). The exact location of the
detector must be determined by an evaluation based on engineering judgement, or if
possible, by field tests.
     
 
Wall Mount
The EXP-SD-SFC-120V-V1 can also be mounted on a side wall (see Figure 6). The exact
location of the detector must be determined by an evaluation based on supplemented
engineering judgement, or if possible, by field tests.
IMPORTANT
Whenever possible, select a mounting orientation where the LED is
visible to personnel within the area.
 

LEO
 

SIDE
WALL
�
MOUNT THE DETECTOR
Using three No. 8 flat head screws (or equivalent) placed through the counter
bored holes in the detector flange, secure the detector junction box to the surface
location.
WIRING CABLE REQUIREMENTS
Always use proper temperature rated cabling type and diameter for input
power as well as output signal wiring. 14 to 18 AWG shielded stranded
copper wire is recommended.
The field wiring terminal connections are certified for a single wire in size from 0.2
to 2.5 mm
2
(or two conductors with same cross section 0.2 to 0. 75 mm
2
). The
screws must be tightened down with a torque 0.4 to 0.5 N•m. The metal housing
must be electrically connected to earth ground.
A minimum of 12 Vdc must be present at the EXP-SD-SFC-120V-V1 to ensure
proper operation. The maximum cable length from power source to EXP-SD-
SFC-120V-V1 is 2000 feet. When the EXP-SD-SFC-120V-V1 Smoke Detector is
mounted remotely using an STB termination box, maximum cable length from EXP-
SD-SFC-120V-V1 to STB is 500 feet.
WARNING
For field connections, use wires/cables that are rated at 20
°
C greater than the maximum ambient temperature.
NOTE :
In applications where the wiringg is installed in conduit, dedicated conduit is recommended. Avoid low
frequency, high voltage, and non-signaling conductors to prevent nuisance EM/ problems.

EXP-SD-SFC-120V-V1
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JUMPER
Depending on the wiring option that is used, jumpers may be required. See Table for the Jumper Usage Guide, and
Figures 12 to 15 for wiring examples.
Jumper Usage Guide
   

    
  
 
2   
 

 I 
    
  
 
WIRING PROCEDURE
Ensure that all cables are terminated properly. Conductor insulation should be stripped off with a bare conductor length of 0.2 inch
(5 mm) minimum and 0.7 inch (18 mm) maximum. Ensure that cable shield is properly terminated and that bare shield wire is not
allowed to accidentally contact the metal housing or any other wire.
Use the following instructions when wiring the EXP-SD-SFC-120V-V1 detector:
1. Slightly loosen the three setscrews located on the retaining ring

2.
Unscrew the retaining ring to gain access to the wiring terminals (see Figure
8), and complete the installation of the system conduit Feed the external
wiring through the remaining junction box entry or M25 to 3/4 inch adapter.
When installing the junction box, use care not to damage the wires and
refrain from twisting them.
 




3. Connect the external wiring to the appropriate terminals.
- Figure 9 shows the wiring terminals.
- Figure 10 shows the ground lug locations.
- Figures 12 and 13 show wiring for single detector configurations.
- Figures 14 and 15 show wiring for multiple detector configurations.
4. Re-install the assembly. Us e the alignment guide (see Figure 11) to align the
retaining ring with the junction box.
5. Screw the retaining ring on to the jurrction box and re-tighten the three setscrews.


 
.,
 
 



 


 

+Vin 1

Figure 9

EXP-SD-SFC-120V-V1
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MAINTENANCE
WARNING
To avoid a potential electrostatic discharge (ESD), do not wipe or rub the surface of
the EXP-SD-SFC-120V-V1 sensor module.
NOTE :
The EXP-SD-SFC-120V-V1 Smoke Detector contains no user serviceable
components and should never be opened. The 3EXP-SD-SFC-120V-V1 wiring
compartment is the only part of the smoke detector that should be opened by the
user in the field.
ROUTINE INSPECTION
Regularly scheduled maintenance is not required, however the EXP-SD-SFC-120V-V1
cover and smoke chamber should be inspected periodically when detectors are located in
abnormally dirty or dusty environments, to ensure the smoke chamber is not blocked by dirt or
debris.
The smoke detector can be tested using the same methods employed for any photo-electric
detector. Det-Tronics recommends using a test aerosol smoke dispenser for periodic
maintenance of the detector.





I
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GROUND LUG/
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PLC
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EXP-SD-SFC-120V-V1
Larson Electronics, LLC Phone: [phone] Fax: [phone] www.larsonelectronics.com 8of 9
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EXP-SD-SFC-120V-V1
Larson Electronics, LLC Phone: [phone] Fax: [phone] www.larsonelectronics.com 9of 9

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PLC
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MAINTENANCE
There are no serviceable parts inside the fixture. However, it is good practice to routinely clean and check the
fixture for proper function.
•Disconnect power running to the unit and be sure the fixture iscool to the touch.
•Use a non-abrasive glass cleaning solution to clean the unit.
USE AND CARE
Unauthorized modification may impair the function and/or safety of this device and could affect the life of the equipment.
Always check for damaged or worn out parts before using the device. Store it in a secure place out of the reach of
children when not in use.Inspect for good working condition prior to storage and before re-use.
REPLACEMENT PARTS
The EXP-SD-SFC-120V-V1 is designed to provide years of reliable performance. Should the need for replacement parts
arise, please contact Larson Electronics.
THESE INSTRUCTIONS MAY NOT COVER ALL DETAILS OR VARIATIONS OF THIS PRODUCT FOR YOUR EQUIPMENT OR INSTALLATION REQUIREMENTS.
SHOULD FURTHER INFORMATION NOT COVERED BY THESE INSTRUCTIONS BE REQUIRED, PLEASE CONTACT LARSON ELECTRONICS BY EMAIL AT
[e-mail] OR BY PHONE AT 1-800-369-6671 FOR FURTHER ASSISTANCE.
PLEASE VISIT LARSONELECTRONICS.COM FOR WARRANTY AND RETURN INFORMATION.