Siemens OP121, OH121 Installation Instructions Manual
Installation Instructions
Models OP121/OH121
Photoelectri c Smoke Detector and Photo
Smoke/Thermal Detector
Figure 1 OP121 Photoelectric Figure 2 OH121 Photo Smoke
Smoke Detector Thermal Detector
These instructions are written in accordance with the
installation guidelines of NFPA No. 72, Nati onal Fire Alarm
Code, and CAN/ULC-S524, The Installation of Fire Alarm
Systems.
DETECTO R PLACEMENT
For a clear air, 0 to 4000 ft/min velocity application, use 30
foot center spacing (900 sq ft) from NFPA Standard 72
initiating devices chapter and CAN/ULC-S524 as a starting
point for a detector installation layout. This spacing, however,
is based on ideal conditions – smooth ceiling, no air
movement, and no physical obstructions. In some
applications, considerably less area is protected adequately
by each smoke detector. In all installations, place the
detector on the ceiling, a minimum of 6 inches from a side
wall, or on a wall, 6 inches from the ceiling.
Follow the drawings provided or approved by Siemens
Industry, Inc. or by its authorized distributors. See NFPA 72,
National Fire Alarm Code, initi ating devices chapter for
additional guidance on special issues such as beamed
construction and high stockpiling.
TO AVOID NUISANCE ALARMS:
DO NOT locate the OP121/OH121 detector where
excessive smoke concentrations exist under normal
conditions, or in areas of prolonged high relative humidity
where condensation occurs.
DO NOT locate the OP121/OH121 detector next to an oil
burner, kitchen, or garage where exhaust fumes can trigger
an alarm. Other causes of false alarms are dust
accumulation, heavy concentrations of st eam, heavy pipe
or cigar smoke, and certain aerosol sprays.
AIR CURRENTS
Before a detector can sense a fire, the products of combustion or smoke must travel from the fire to th e detector.
Since their travel is especially influenced by air currents,
consider the movement of air in the design of the system.
While combustion products tend to rise, drafts from hallways,
air diffusers, fans, etc., may help or hinder the travel of
combustion products to the detector. W hen positioning a
detector at a particular location, give consideration to
windows and doors, both open and closed, and to influencing
air m ovement. Never install a detector in the air stream of a
room air supply diffuser. It is better to position a detector
closer to an air return.
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SPECIFICATIONS
Environmental
Operating Temperature (Model OP121): 320F (00C) to 1200F
(490C)
Operating Temperature (Model OH121): 320F (00C) to 1000F
(380C)
Humidity: Up to 95% RH, non condensing
Air Pr essure: No effec t
Air Vel ocit y: 0 to 4000 ft/min. For op en area prot ection and direc t
air duct application.
Thermal Alarm Temp. (Model OH121): 1350F (570C)
UL listed with STI Mechanical Protection Guard Model: STI-9604
(see www.STI-USA.com for det ails)
Electrical
Voltage: 16-27 VDC
Ripple: 3V peak-to-peak
Supervisory Current: 100μA max
Alarm Current: 30-50mA
Start-up Time: 30 seconds max
DETECTO R WIRING
The OP121/OH121 shoul d be connected as shown in Figure 3 using
the separate moun ting base, Model DB-11. F ollow the control panel
wiring connection dr awing installed on the inside face of each
contr ol panel c over . See D B-11 instruction, P/N 315-094193, for
base mounting. Duplicate wiring information is als o in the
Installati on, Oper ation, and M aint enance Manual provid ed with
every control panel. Note any limitations on the number of
detectors and restrictions on the use of remote devices
permitted for each circuit.
END OF
LINE
DEVICE
(NOTE
POLARITY
WHEN
APPLICABLE)
1a
1b
1b
1b
5
5
6
6
5
+
DB-1
1/DB-1
1E
[WITH REMOTE DEVICE(S)]
+
-
TO INIT IATING
CIRCUITOF
SIEMENS
INDUSTRY, INC.
CONTROL PANEL
(SEE CAUTION 1)
MULTIPLE REM OTE DEVICES
SEE REMOTE DEVI CE INSTRUCTIONS
FOR WIRI NG DETAILS:
each detecto r/base may have up t o 2 remote devices
with the follo wing configurati ons and restriction s only:
If remote device s are supported by the initiatin g circuit,
DEVICE
RR-11
RLC- 11, RLW-11
RSAC-11, RSAW-11
ADB- 11
Device 1
Remote
RR -11
RR -11
RLC -11, RLW- 11
RLC -11, RLW- 11
Devic e 2
Remote
RLC-11, RLW-11
RSAC-11, RSAW-11
RSAC-11, RSAW-11
RLC-11, RLW-11
Restrictions
See Caution 2
See Caution 2
Wire from base to
RSAC-11/RSAW-11
to RL-11
INSTRUCTIONS
INSTALLATION
P/N 315-094924
P/N 315-094925
P/N 315-094926
P/N 315-096162
DB-1
1/DB-1
1E
[NO REMOTE DEVICE]
-
Figure 3 Installations and W iring D iagram for OP1 21/OH121
Conventional Detectors
Siemens, Industry, Inc.
Building Technologies Division
WAR NING : CONNECT DETECTOR ONLY TO CIRCUITS SPECIFIED IN DETECTOR
AND PANEL
LITERATURE OR SYSTEM MAY NOT OPERATE.
CAUTION:
1. Do not use loope d wire under base
terminal 5. Brea k wire run to provide
supervision of connection.
2. When a remote relay is used to
control a critical system function, the
relay and its associated detector and
optional module(s ) must be the ONLY
devices on the initiating circuit.
Figure 4 OP121 with T M121 Figure 5 TM121 Test Magnet
Test Magnet Placement on OP121
Figure 6 O H121 with TM121 Figure 5 TM121 Test Mag net
Test Magnet Placement on O H121
(after 3 mi nutes) when the green LED is a single blink every 10
seconds. The test mode provides a reduced test time period
and utilizes less concentration of test gas or aerosol.
Detector and control panel functionality can also be tested
using the TM121 test magnet as shown in Figure 4 for the
OP121 detector and Figure 6 for the OH121 detector. Place the
magnet in the specific area at the bottom of the detector that is
shown in Figure 5 for the OP121 detector and Fi gure 7 for t he
OH121 detector for at least 5 seconds with the colored side
towards the centered LED. The detector will send an alarm to
the panel.
WARNING: Testing with the magnet only tests the circuit; it
does not test the detector’s sensing ability.
WARNING: The TM 121 test magnet is a strong magnet that
can be harmful to pacemaker wearers and to those with
medical implants. Keep the magnet away from magnetic
media such as credit cards and memory disks/chips.
CAUTION: UNDER NO CIRCUMSTANCES IS THE
DETECTOR HEAD TO BE DISASSEMBLED. NO REPAIRS
OR CLEANING SHOULD BE ATTEMPTED.
DO NOT PAINT
The detector/base plastic is marked DO NOT PAINT. This is
intended to prohibit painting during routine maintenance of
the occupancy which can affect proper operation of the
det ector.
COMPATIBLE CONTROL EQUIPMENT
Equipment
Compatibility Identifier
Installation/Wiring
Instructions
SXL-EX
SZM (FS-250C)
P/N 315-095997-8
P/N 315-034850C-4
The detector model number is the compatib ility identifier .
A6V10281367_b_en--
INSTALLATION / REMOVAL OF DETECTOR
TO INSTALL:
· Rotate detector counterclockwise while gently pressing
on it until the detector drops fully into base.
· Then rotate the detector clockwise until it stops
and locks
in place. Insert optional locking screw (
Order Model
LK-11).
TO REMOVE:
· Loosen locking screw, if installed. Then rotate the
detector counter clockwise until stop is reached.
· Pull detector out of base.
LED INDICATOR OPERATION
The OP121/OH121 contains an LED indicator capable of
flashing either one
of three distinct colors: green, yellow, or
red. The microprocessor based detector monitors the
following:
· Smoke in its sensing chamber
· Smoke sensitivity is within the range indicated on the
nameplate label (sensitivity verification)
· Internal sensors and electronics
Based on the results of these checks, the LED indicator
flashes as follows:
Flash
Color
Condition
Flash
Interval
(Seconds)
Green
Normal supervisory operation. Smo ke
sensitivity is within rated limits. Double
blinking fir s t 3 min after power up or reset.
Si ng le blinki ng after the first 3 min.
10
Yellow Detector is in trouble and needs replacement. 5
Red Alarm
2½
No
Flashes
Detector is not powered or repl acement is
needed.
TESTING AND MAINTENANCE
To assure proper operation of the detector and control panel,
it
is required that both the Sensitivity test and the Functional
test
be conducted using the procedures outlined below.
SENSITIVI TY TEST
The OP121/OH121 monitors its smoke sensitivity
automatically and requires no test equipment. A green fl ash
of
the detector LED about every 10 seconds indicates that the
smoke sensitivity is within its listed limits.
FUNCTIONAL TEST
To test the detector and control panel for functional operation,
use SIEMENS Test Gas, P/N 500-649750. Follow t
he
instructions on the gas canister label.
Smoke entry test mode: To test the detector for smoke entry,
place the detector into a test mode. The test mode condition
is
automatically started after the initial power up and after
every
reset for a period of 3 minutes. It is recommended that
a
control panel reset be performed after every smoke entry
test
is conducted to restart the 3 minute test period. The test
mode
is indicated when the green LED is doubl e blinking every 10
seconds. A normal operational mode is indicated
Siemens Industry, Inc. Siemens Canada Limited
Building Technologies Division Building Technologies Division
Florham Park, NJ 2 Kenview Boulevard
Brampton, Ontario L6T 5E4 Canada
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