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Smoke Detector Operation and Application
The closer/holder unit includes a 4-wire, photoelectric type smoke detector. It
provides: smoke detection, door holder latch control, N.O. alarm contact, N.C.
supervisory contact and interconnection to other smoke detectors. Field option:
one form C auxiliary contact (cut jumper wire between 11 and 12).
Smoke Detector Terminal Inputs and Outputs
· 24V input power is applied to terminals 3 (-) and 14 (+) from the circuit board. The red LED flashes every
8 seconds.
· Terminals 1 and 2 provide a normally open (alarm) contact. This contact closes when smoke is detected.
The red LED illuminates continuously.
· Terminals 5 and 13 provide a normally closed supervisory (trouble) contact. This contact opens when
power is lost to the detector circuitry. The red LED stops flashing and does not illuminate.
· Terminals 6 and 9, if used, provide rectified, unfiltered 24VDC power to an additional door holder solenoid.
In an alarm condition, power is removed and the door closes.
· Terminals 7 and 8, if used, provide rectified, unfiltered 24VDC power to auxiliary devices when the detector
alarms.
· Terminal 10 is 24VDC Positive output. It is continuous, rectified, unfiltered 24VDC power used for remote
detector interconnect applications.
· Terminals 8, 9, and 10 may be field configured to a dry form contact by cutting jumper between terminals
11 and 12. Terminal 10 is Common, 9 is N.C. and 8 is N.O. If this is done, Aux+ is lost; latch power must be
supplied by a separate source
· Terminals 4 and 15 provide interconnections to other detectors (see diagram on Page 8). Up to five smoke
detectors may be interconnected. When a single detector alarms, terminal 15 goes high and all
interconnected smoke detectors will release their doors. The unit that initiated the alarm will have its LED
on. The LED on the other interconnected units will flash as normal. Refer to Interconnection Wiring
Diagram for connections.
CONNECTION LIST
FUNCTION
24VDC input
Alarm Contacts
Latch (+)
Latch (-)
Aux (+)
Aux (-)
Interconnect (+)
Interconnect (-)
SOLENOID (+)
Trouble contacts
+24VDC output (unfiltered)
NOTE: Terminals 4, 6, and 7 are same point
Detector Specifications:
·
Type: Photo-Electric Smoke Detector complies with UL 228 and UL 268 standards.
·
Power Requirements: 24VDC +/- 10%.
·
Normal Sensitivity: 2.325 +/- 1.055% / FT.
·
Contact Ratings:
Alarm and / or accessories (Resistive Load):
2.0 Amps Max @ 24VDC
0.6 Amps Max @ 120VAC
Trouble Contact (Resistive Load):
0.5 Amps Max @ 24VDC
TERMINAL
3 (-), 14 (+)
1, 2
9
6
8
7
15
4
9
13, 5
10
24 VAC
24 VDC
120 VAC
Copyright © 2015, Sargent Manufacturing Company, an ASSA ABLOY Group
company, All rights reserved. Reproduction in whole or in part without the
express written permission of Sargent Manufacturing Company is prohibited.
7
6
5
4
3
2
1
Current - Detector
Max / Min Voltage
26.4 VAC Max
0.028 A Standby
0.059 A Alarm
21.6 VAC Min
26.4 VDC Max
0.034 A Standby
0.074 A Alarm
21.6 VDC Min
132 VAC Max
0.033 A Standby
0.036 A Alarm
106 VAC Min
LED /
Reset
15
14
13
12
11
10
9
8
3
A8200 (10/15)
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