Smoke Detector 521 Catalog Page

Smoke Detector 521 Catalog Page
Edwards Signaling Catalog u Conventional Initiating
Smoke Detectors
with Auxiliary
Functions
500 Series
Overview
Standard Features
Edwards brand 500 Series two-wire conventional photoelectric
smoke detectors bring together trusted technology and a full line
of features that meet the demands of every type of application.
The 500 offers sounders in two-wire applications, specifically to
meet residential code requirements.
• Remote maintenance (CleanMe®) reporting and builtin drift compensation reduces false alarms
Edwards is also proud to offer proven technology like CleanMe®,
dust compensation, field replaceable optical chambers, and selfdiagnostics. CleanMe® is only available on the 500 2-wire models
and will communicate with compatible FACPs when servicing is
required.
500 Series detectors work on a light-scattering principle. A pulsed
infrared light-emitting diode serves as the light source, and a highspeed photo diode as the sensing element. This design has superior protection against nuisance alarms caused by dust, insects,
RF interference, and ambient light.
• Self diagnostics eliminates the need for external meters
• Field-replaceable optical chamber makes service fast and simple
• Small, low profile design blends with any environment
• Optional auxiliary functions include:
•Integral sounder
•Auxiliary relay
•Fixed/Rate-of-Rise heats
The proprietary optical chamber is field replaceable. In the event of
a confirmed alarm the LED will light continuously. The unit indicates trouble by flashing the LED every second. This meets the
NFPA 72 field sensitivity testing requirements.
Units with built-in 85dBA sounders emit a temporal 3-3-3 tone
pattern when in alarm and will emit a steady tone when the input
power is reversed. All wiring terminates in clamp-type screw
terminals. The detectors mount to a standard single-gang electrical box, a four-inch octagonal, four-inch square electrical box, or
WIREMOLD No. 5739 fixture box.
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S85001-0606
D ATA S H E E T
Not to be used for installation purposes. Issue 1.2
Application
Assembly
500 Series detectors are ideal for both retrofit applications and
new installations alike. They are particularly well-suited for installations where detector reliability is essential, but where analog
devices may not be appropriate or feasible. With their replaceable
optical chambers, these detectors are equally well-suited to dusty
environments where detectors require frequent cleaning.
Optional fixed temperature sensor
Diagnostic LED
Optional rate-of-rise sensor
Photoelectric sensor
Replaceable optical chamber
Detector cap
Mounting and Installation
500N detector bases mount directly to standard single-gang electrical boxes, three-inch round, or four-inch octagonal boxes. Detector heads simply twist onto the base. Heads are equipped with
a break-away locking tab, which prevents unauthorized removal.
Terminals accept 24 to 12 AWG field wiring.
Dimensions
2" (5cm)
5" (12cm)
Typical Wiring
Specifications
Electrical
Power Supply
Maximum ripple pk-pk (6/12/24V)
Typical average standby current
Typical alarm current (6/12/24V)
Auxiliary relay contacts
(521NCRXT only)
Photoelectric sensitivity
Environment
Operating temperature
Operating humidity range
RFI immunity
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8.5-33VDC (12/24 V operation)
polarity sensitive
10% (Vpk-pk)
70 μA
up to 60 mA max if not limited by
control panel
1.0 A @ 30 VDC; Form C
3.1% + 0.5 - 1.0%
32° to 100° F (0° to 37° C)
0 to 95% non-condensing
20 V/m min; 0-1000 MHz
Physical
Color
Field wiring size
Heat detector specifications
UL 2-wire compatibility identifiers
Sounder output (521NCSXT only)
Drift compensation adjustment
Detector head dimensions
Mounting dimensions
Regulations
Reset time
Listings
White
12-18 AWG (16-22 recommended)
Rate-of-Rise:
15° F/min and >105° F
(8.3° C/min and >40.6° C)
Fixed Threshold: 135° F (57.2° C)
S10A
85dB @ 10 feet
1.0% ft. max
5.5 D x 2" H (14.0 x 5 cm)
5.25" (13.3 cm) diameter;
0.3" (0.8 cm) height
1 second min
C-UL-US, CSFM, MEA
S85001-0606
D ATA S H E E T
Not to be used for installation purposes. Issue 1.2
Ordering Information
Model
Description
Compatibility
521B
521BXT
521NCRXT
521NCSXT
2-wire, photoelectric, 6-33VDC
2-wire, photoelectric, 6-33VDC, fixed temp and rate-of-rise heat
2-wire, photoelectric, 8.5-33VDC, fixed temp and rate-of-rise heat, aux. relay
2-wire, photoelectric, 8.5-33VDC, fixed temp and rate-of-rise heat, temporal
3 sounder
S09A/S10A
S09A/S10A
S11A
S10A
Alarm Current
(mA)
5 min. - 60 max.
5 min. - 60 max.
15 min. - 60 max.
10 min. - 60 max
Reverse
polarity (mA)
10
Note: Only 500 Series 2-wire smoke detectors are CleanMe compatible.
Suffix Designations
B
6-33VDC operation
C
8.5-33VDC operation
R
Auxiliary relay
S
85dBa sounder
XT
Rate-of-rise and fixed temp sensors
Accessories
211-10PKG
Page 3 of 4
Replacement optical chambers (set of 10)
S85001-0606
D ATA S H E E T
Not to be used for installation purposes. Issue 1.2
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