System Sensor APA451 User Manual

Page 2

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D440-00-00 2 I56-468-05

2004 System Sensor

System Sensor warrants its enclosed remote test station to be free from defects in materials and workmanship under normal use and service for a
period of three years from date of manufacture. System Sensor makes no other express warranty for this remote test station. No agent, representative,
dealer, or employee of the Company has the authority to increase or alter the obligations or limitations of this Warranty. The Company’s obligation of
this Warranty shall be limited to the repair or replacement of any part of the remote test station which is found to be defective in materials or work-
manship under normal use and service during the three year period commencing with the date of manufacture. After phoning System Sensor’s toll free
number 800-SENSOR2 (736-7672) for a Return Authorization number, send defective units postage prepaid to: System Sensor, Repair Department, RA
#__________, 3825 Ohio Avenue, St. Charles, IL 60174. Please include a note describing the malfunction and suspected cause of failure. The Company
shall not be obligated to repair or replace units which are found to be defective because of damage, unreasonable use, modifications, or alterations
occurring after the date of manufacture. In no case shall the Company be liable for any consequential or incidental damages for breach of this or any
other Warranty, expressed or implied whatsoever, even if the loss or damage is caused by the Company’s negligence or fault. Some states do not allow
the exclusion or limitation of incidental or consequential damages, so the above limitation or exclusion may not apply to you. This Warranty gives you
specific legal rights, and you may also have other rights which vary from state to state.

APA451 Contents
1 APA451 annunciator with piezo alert
1 screw pack (containing two mounting screws)

Installation
Wire the APA451 as shown in Figure 2. Limit wire runs to
25 ohms or less per interconnecting wire.

Secure the APA451 to the single gang box using the two
screws provided, or directly to the wall or ceiling.

The sounder will not operate if the power is cut off for any reason.

The sounder may not be heard. The loudness of the sounder meets or
exceeds the current standards. However, the sounder may not alert a
sound sleeper or one who has recently used drugs or has been drinking
alcoholic beverages. This sounder may not be heard if it is placed in an
area that is separated by a closed door, or if it is located on a different
floor from the person in a hazardous situation, or if it is placed too far
away to be heard over ambient noise, such as, traffic, air conditioners,

WARNING

The Limitations of Sounders

machinery or musical appliances that may prevent alert persons from
hearing the alarm.

The sounder may not be heard by persons who are hearing-impaired.
In this case, a visual indicator shall also be used.

For these reasons, Pittway recommends that sounders (85dBA minimum
at 10 feet) used in a residence shall be placed on every level and in every
bedroom that does not have a smoke detector with a built-in sounder.

Figure 3: Wiring diagram for DH100ACDC to APA451:

Figure 2: Wiring diagram for DH400ACDC to APA451:

Operational Test
Consult the wiring diagrams below to insure proper wiring
to the APA451.

Supply power to the duct smoke detector. Visually check the
supervisory LED (green) to make sure it is operational.

Put the detector into alarm state. The alarm LED (red) will
light, and the piezo horn will sound. Reset the detector.

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4-Wire Wiring to APA451

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Three-Year Limited Warranty

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