interlogix ESL 521 Series Low Profile Self-Diagnostic Two Wire Photoelectric Smoke Detector Instructions

interlogix ESL 521 Series Low Profile Self-Diagnostic Two Wire Photoelectric Smoke Detector

Introduction

• CleanMe® remote maintenance reporting reduces false alarms
• Smart dual fixed/rate of rise heat works with photo chamber to catch fires faster
• Built-in drift compensation reduces false alarms
• Field replaceable optical chamber makes servicing a snap
• Small, low profile design blends in with any environment

The ESL 521 Series self-diagnostic, two-wire

smoke detectors are the industry’s first conventional direct-wire smoke detectors with analog features such as remote maintenance/trouble reporting (CleanMe®), drift compensation, and multi-criteria detection.
The 521 Series continually monitor their own sensitivity and operational status, and provide a visual and remote trouble condition if they drift out of the sensitivity range or fail internal diagnostics. This meets NFPA 72 field sensitivity testing requirements without the need for external meters. The 521 has a unique feature enabling it to send a signal (CleanMe) to the ESL 505 module (sold separately) when it has drifted outside of its UL Listed sensitivity range or has failed its internal diagnostics test. The 505 is an interface module that will signal a 24V panel via relays when the 521 is dirty. Several 12V and 24V control panels have the CleanMe software built in, eliminating the need for the 505 module. When Clean Me is not desired, simply leave the switch on the 521 off and it will work as a normal two wire detector. CleanMe allows the installer time to schedule a service call and avoid a false alarm.
Time between cleaning detectors is dramatically increased because of the 521’s built-in drift compensation. This feature, usually only available in analog systems, allows the detector to automatically adjust its sensitivity over time as it becomes dirty, increasing the life of the detector
And when the 521 has told you that cleaning is necessary, it’s literally a snap with ESL’s patented field replaceable optical chamber.

521 Series ESL Photoelectric Smoke Detectors

The multi-criteria model 521BXT/CRXT photoelectric smoke detector/fixed rate of rise heat detector includes fast response algorithms for a quick response to both flaming and smoldering fires. Fast response algorithms allow the heat detectors to work intelligently together with the photoelectric smoke detector. As soon as the heat sensor detects a rapid rise in temperature, the sensitivity of the photoelectric sensor increases allowing it to detect smaller particles of combustion faster

Architectural and Engineering Specifications

The ESL 521 Series photoelectric smoke detector is a lowprofile, self- diagnostic , two wire detector that monitors its own sensitivity and operational status. This detector meets
NFPA 72 field sensitivity requirements without the need for external meters. Built-in drift compensation automatically adjusts the sensitivity as the detector gets dirty. Normal sensing occurs every 9 seconds. This rate doubles when a signal exceeding the alarm threshold value is sensed. Two additional successive signals above the threshold level will initiate an alarm.

See installation instructions for information about correct installation and maintenance

The proprietary optical sensing chamber is field replaceable, allowing quick and easy cleaning and maintenance.

Dimensions:

Specifications:

Product Data

Dip switch 1 “on” ………………. 6.5-33VDC, polarity sensitive
Dip switch 1 “off” ……………… 8.5- 33VDC, polarity sensitive
Maximum ripple (pk to pk) ………………………………. 10% (Vp – p)
Typical average standby current (24V) …………………….. 70µA
Typical alarm current (24V) …………………….. up to 60mA max (if not limited by control panel)
Alarm Contacts ……………………….500mA@36VDC (resistive)
Aux. Relay contacts ……………………………………. 1A@ 30VDC
Sensitivity (photoelectric) …………………… 3.1% + 0.50-1.00%
Operating temperature ……………. 32°F to 100°F (0° to 37°C)
Operating humidity range …………. 0 to 95% Non-condensing
RFI Immunity ……………………… 20V/m minimum; 0-1000MHz
Field wiring size …………………………………………… 12-24 AWG Heat detector specifications Rate of rise …. 15°F/min and >105°F (8.3°C/min, > 40.6°C)
Fixed ……………………………………………………… 135°F (57°C) UL two-wire compatibility identifier:
Dip switch 1 “on” ………………………………………………….S09A
Dip switch 1 “off” ………………………………………. S10A, S11A
Drift compensation adjustment ……………………… 1.0%/ft. max
Reset time………………………………………….1 second minimum Detector head dimensions:
Diameter ………………………………………………………5” (12cm)
Height ……………………………………………………………2” (5cm) Mounting dimensions:
Diameter ……………………………………………… 4.75” (12.5cm)
Height …………………………………………………….. 0.3” (0.8cm)
Color …………………………………………… White head and base
Detector packaging……………………….10 detectors per carton
Listings …………………………………………………. UL, ULC, CSFM

algorithms, fixed/rate of rise smart dual heat, UL listed
521BXT-10PK| 10 pack of 521BXT (not individually boxed)
521CRXT| 2-wire, photoelectric,12-24VDC with CleanMe, auxiliary relay, multi- criteria algorithms, fixed/rate of rise smart dual heat, UL listed
528B| 2-wire, photoelectric, 6-24VDC, ULC listed
528BXT| 2-wire, photoelectric, 6-24VDC with CleanMe, multi-criteria algorithms, fixed/rate of rise smart dual heat, ULC listed
Accessories
505| Module that interprets the 521’s CleanMe signal for the panel and can convert 2-wire 521 Series to 4-wire inputs on panel
401| Test magnet in plastic shell for pole mounting
SM-200| Smoke! in a Can® (canned smoke) for functional testing of smoke detectors
211| Replacement optical chambers (set of 10)

Customer Support

PH 503.692.4052
USA & Canada: 800.547.2556
Technical Service: 800.648.7424 FaxBack: 800.483.2495
www.sentrol.com
www.interlogixsecurity.com
firealarmresources.com

References

• Fire Alarm Resources | Download fire alarm documents
• Keeping Your Luxury Home Secure
• Interlogix Global Security Products

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