Gentex 8000 Series Installation Instructions

PHOTOELECTRIC TYPE OPEN AREA SYSTEM DETECTORS
Installation Instructions - Owner's Information READ CAREFULLY AND SAVE
INTRODUCTION 8000 SERIES
The 8000 Series smoke detector is an open area photoelectric system smoke
detector, engineered to provide reliable early warning against smoke. Each smoke
detector is provided with a standard Form A/FormC relay for alarm and auxiliary
functions.
Supplied with each detector is a quick-disconnect wiring harness and universal
mounting bracket.
MODELS AVAILABLE
(SEE BACK OF SMOKE DETECTOR FOR EXACT MODEL)
8240/8243.........................................24VDC
8100/8103.........................................120VAC, 60 HZ
OPTIONS, SELECTIONS
* P......................................................BUILT-IN PIEZO HORN
T.......................................................INTEGRAL 135°F THERMAL SENSOR
**H......................................................ISOLATED 135°F THERMAL SENSOR
Y.......................................................NON-LATCHING/SELF-CLEARING
* All detectors with the piezo horn option include smoke detector reverse polarity
horn activation. Relay contacts are not activated with the application of reverse
polarity power.
** The H Series 135°F normally open isolated thermal is not wired into the detection
circuit. It is for remote connection to the auxiliary annunciation circuit. The "H"
thermal is supervised with two wires in and two wires out.
The 8240P/8100P models produce a non-temporal audible alarm and are
therefore not intended for locations where the desired action of the
occupant(s) is evacuation.
The 8243P/8103P models produce a temporal 3 audible alarm. Per NFPA
72, the American National Standard Audible Emergency Evacuation
Signal as defined in ANSI S3.41, is required whenever the intended
response is to evacuate the building.
ELECTRICAL SPECIFICATIONS
MODEL NUMBERS
Operating Voltage Nominal:
Range Min:
Max:
Frequency
Current consumption at Normal Operating Voltage
Standby
Alarm
NOTICE: FOR "P" OPTION (HORN), ALARM CURRENT CONSUMPTION IS
UNCHANGED. REVERSE POLARITY CURRENT IS 15MA.
Alarm Relay Contacts: 1 Form A.....................................................Rated Load (Resistive)
Auxiliary Relay Contact: 1 Form C..................................................Rated Load (Resistive)
Temperature................................................................................40ºF-100ºF(4.4ºC-37.8ºC)
Humidity...................................................................................10%-93% Relative Humidity
Size...................................................................................................5.7"W x 5.7"H x 2.8"D
HOW YOUR SMOKE DETECTOR WORKS
The 8000 Series smoke detector operates on the photoelectric light scatter principle.
The unit's sensing chamber houses a light source and a light sensor.
The darkened sensing chamber is exposed to the atmosphere and designed to
permit optimum smoke entry from any direction while rejecting light from outside the
detector.
The light source is an infrared (invisible) LED which pulses every 4 to 8 seconds.
The light sensor is a photodiode matched to the light frequency of the LED light source.
8240 8100
24VDC 120VAC
18VDC 110VAC
30VDC 130VAC
------ 60Hz.
6mA 70mA
60mA 70mA
1 Amp at 24 Volt DC
0.5 Amp at 120 Volt AC
1 Amp at 24 Volt DC
0.5 Amp at 120 Volt AC
8 8 0 0 0 0 0 0
S S E E R R I I E E S S
Under normal conditions, the light generated by the pulsing infrared LED is not seen
by the light sensor. When smoke enters the sensing chamber, light from the pulsing
LED light source is reflected by the smoke particles onto the photodiode light sensor. At
the first sighting of smoke, the smoke detector is put into a pre-alarm mode. This is
indicated by a rapidly flashing LED on the face of the smoke detector.
Once the light sensor confirms smoke for 2 consecutive pulses inside the chamber,
the light sensor produces the signal necessary to trigger the alarm.
This technique of verifying the smoke condition, combined with a 5-to-1 signal-to-
noise ratio, substantially reduces the possibility of nuisance alarms.
PLACEMENT OF SMOKE DETECTORS
THIS EQUIPMENT SHOULD BE INSTALLED IN ACCORDANCE WITH THE
NATIONAL FIRE PROTECTION ASSOCIATION'S
STANDARD 72 (National Fire Protection Association, Batterymarch Park, Quincy, MA
02269).
For your, information, the National Fire Protection Association's Standard 72, 2010
Edition, Chapter 17 states the following:
17.7.3.1.1 The location and spacing of smoke detectors shall be based upon the
anticipated smoke flows due to the plume and ceiling jet produced by the anticipated
fire, as well as any pre-existing ambient airflows that could exist in the protected
compartment.
17.7.3.1.2 The design shall account for the contribution of the following factors in
predicting detector response to the anticipated fires to which the system is intended to
respond:
(1) Ceiling shape and surface
(2) Ceiling height
(3) Configuration of contents in the protected area
(4) Combustion characteristics and probable equivalence ratio of the anticipated fire
involving the fuel loads within the protected area
(5) Compartment ventilation
(6) Ambient temperature, pressure, altitude, humidity, and atmosphere
17.7.3.1.3 If the intent is to protect against a specific hazard, the detector(s) shall be
permitted to be installed closer to the hazard in a position where the detector can
intercept the smoke.
17.7.3.1.4 If the intent is to initiate action when smoke/fire threatens a specific object or
space, the detector shall be permitted to be installed in close proximity to that object or
space.
17.7.3.2 Spot-Type Smoke Detectors
17.7.3.2.1 Spot-type smoke detectors shall be located on the ceiling or, if on a sidewall,
between the ceiling and 12 in. (300 mm) down from the ceiling to the top of the detector.
17.7.3.2.2 To minimize dust contamination, smoke detectors shall be in accordance with
17.7.3.2.3.1 through 17.7.3.2.3.5.
17.7.3.2.3.1 In the absence of specific performance-based design criteria, smooth
ceiling smoke detector spacing shall be a nominal 30 ft (9.1 m).
17.7.3.2.3.2 In all cases, the manufacturer's published instructions shall be followed.
17.7.3.2.3.3 Other spacing shall be permitted to be used depending on ceiling height,
different conditions, or response requirements.
17.7.3.2.3.4 For the detection of flaming fires, the guidelines in Annex B shall be
permitted to be used.
17.7.3.2.3.5 For smooth ceilings, all points on the ceiling shall have a detector within a
distance equal to 0.7 times the selected space.
17.7.3.2.4 For solid joist and beam construction, spacing for spot-type smoke detectors
shall be in accordance with 17.7.3.2.4.1 through 17.7.3.2.4.6.
550-0139
Pg. 8-1