Siemens OP121 Installation Instructions Manual - User Manual

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Installation Instructions
Models

OP121/OH121

Photoelectric 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, National Fire Alarm
Code, and CAN/ULC-S524, The Installation of Fire Alarm
Systems.

DETECTOR 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, initiating 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 steam, heavy pipe
or cigar smoke, and certain aerosol sprays.

AIR CURRENTS

Before a detector can sense a fire, the products of com-
bustion or smoke must travel from the fire to the 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. When positioning a
detector at a particular location, give consideration to
windows and doors, both open and closed, and to influencing
air movement. 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.

A6V10281367_b_en--

SPECIFICATIONS
Environmental

Operating Temperature (Model OP121): 32

F (0

C) to 120

(49

Operating Temperature (Model OH121): 32

F (0

C) to 100

(38

Humidity: Up to 95% RH, non condensing
Air Pressure: No effect
Air Velocity: 0 to 4000 ft/min. For open area protection and direct
air duct application.
Thermal Alarm Temp. (Model OH121): 135

F (57

UL listed with STI Mechanical Protection Guard Model: STI-9604
(see

www.STI-USA.com

for details)

Electrical

Voltage:

16-27 VDC

Ripple:

3V peak-to-peak

Supervisory Current:

100

A max

Alarm Current:

30-50mA

Start-up Time:

30 seconds max

DETECTOR WIRING

The OP121/OH121 should be connected as shown in Figure 3 using
the separate mounting base, Model DB-11. Follow the control panel
wiring connection drawing installed on the inside face of each
control panel cover. See DB-11 instruction, P/N 315-094193, for
base mounting. Duplicate wiring information is also in the
Installation, Operation, and Maintenance Manual provided 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)

6
5

DB-11/DB-11E

[WITH REMOTE DEVICE(S)]

TO INITIATING

CIRCUIT OF
SIEMENS
INDUSTRY, INC.

CONTROL PANEL

(SEE CAUTION 1)

MULTIPLE REMOTE DEVICES

SEE REMOTE DEVICE INSTRUCTIONS

FOR WIRING DETAILS:

each detector/base may have up to 2 remote devices
with the following configurations and restrictions only:

If remote devices are supported by the initiating 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

Device 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-11/DB-11E

[NO REMOTE DEVICE]

Figure 3 Installations and Wiring Diagram for OP121/OH121

Conventional Detectors

Siemens, Industry,

Inc.

Building Technologies Division

W ARNING :

CONNECT DETECTOR ONLY TO CIRCUITS SPECIF IED I N DETECTOR AND P ANEL

LITERATURE OR SYSTE M M AY NO T OPER ATE.

CAU TION :
1. Do not use looped wire under base
terminal 5. Break 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 TM121

Figure 5 TM121 Test Magnet

Test Magnet

Placement on OP121

Figure 6 OH121 with TM121

Figure 5 TM121 Test Magnet

Test Magnet

Placement on OH121

(after 3 minutes) 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 Figure 7 for the
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
detector.

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 compatibility 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 REM OVE:

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 oper ati on. Sm o k e
sensitivity is within rated limits. Double
blinking fir s t 3 min after power up or reset.
Si ngl e blinking after the first 3 min.

Yellow

Detector is in trouble and needs replacement.

Red

Alarm

2½

No
Flashes

Detector is not powered or replacement 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.

SENSITIVITY TEST

The OP121/OH121 monitors its smoke sensitivity
automatically and requires no test equipment. A green flash 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 the
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 double blinking every 10
seconds. A normal operational mode is indicated

Siemens Industry, Inc.

Siemens Canada Limited

Building Technologies Division

Florham Park, NJ

2 Kenview Boulevard

Brampton, Ontario L6T 5E4 Canada