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Siemens Industry, Inc.
Smart Infrastructure
8, Fernwood Road
Florham Park, New Jersey 07932
www.siemens.com/buildingtechnologies

Siemens Canada Limited
Smart Infrastructure
2 Kenview Boulevard
Brampton, Ontario L6T 5E4
Canada

© Siemens Industry, Inc.

Data and design subject to change without notice.

A6V10323928_c_en_--

P/N A5Q00041071

In the device line, up to 30 of any compatible devices in
polarity  insensitive  mode  with  20  ohms  max  line
resistance  can  be  isolated  between  two modules  in
isolator mode in a Class A Style 6 wiring.
In the device line, up to 30 of any compatible devices in
polarity  insensitive  mode  with  20  ohms  max  line
resistance can be isolated behind one module in isolator
mode in a Class B Style 4 wiring.

HLIM  isolator  module  and  SBGA-34  sounder  base
cannot be used in the same loop with the modules in
isolator mode.

FCC Statement

WARNING!

Installation and usage of equipment not in accordance with instructions manual may
result in:

Radiation of radio frequency energy
Interference to radio communications

·

  Install and use equipment in accordance with installation instructions manual

·

  Read the following information

This equipment generates, uses, and can radiate radio frequency energy and if not installed and used in
accordance with the instructions manual, may cause interference to radio communications.
It has been tested and found to comply with the limits for a Class A computing device pursuant to Part 15 of FCC
Rules, which are designed to provide reasonable protection against such interference when operated in a
commercial environment.
Operation of this equipment in a residential area is likely to cause interference in which case the user at his own
expense will be required to take whatever measures may be required to correct the interference.

Summary of Contents for OP921

Page 1: ...l joists and beams can slow the movement of heated air and smoke while pockets between them can contain a reduced level of smoke Take obstructions created by girders joists beams air conditioning ducts or architectural design into consideration when determining area protection Refer to the Initiating Devices chapter of NFPA Standard 72 for Location and Spacing requirements for specific types of co...

Page 2: ...hen using this detector direct in air duct applications be sure the detector is set to the parameter Duct WIRING The OP921 supports two operation modes polarity insensitive mode and isolator mode The Detector can be wired for either mode refer to Figure 2 and 3 During the isolator mode the built in dual isolators will work at both sides of the Detector to isolate the line short in front or behind ...

Page 3: ... 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 Polarity insensitive wiring Figure 2 Isolator mode wiring Figure 3 Wire size maximum 14 AWG minimum 18 AWG Wire larger than 14 AWG can damage the connector TO INITIATING CIRCUIT OF SIEMENS COMPATIBLE CONTROL UNIT OPTIONAL REMOTE ALARM INDICATOR...

Page 4: ...the same loop with the modules in isolator mode FCC Statement WARNING Installation and usage of equipment not in accordance with instructions manual may result in Radiation of radio frequency energy Interference to radio communications Install and use equipment in accordance with installation instructions manual Read the following information This equipment generates uses and can radiate radio fre...

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