Wheelock NS-121575W Installation Instructions

273 Branchport Avenue
Long Branch, NJ 07740
(800) 631-2148 (USA)
(800) 397-5777 (CANADA)
www.wheelockinc.com
Use this product according to this instruction manual. Please keep this instruction manual for future reference.
GENERAL:
Wheelock's Series NS Horn Strobe Appliances require only 2-wires for operation of the horn and strobe appliance and provide a selectable continuous or Code 3 Horn
tone and continuous strobe when connected directly to a fire alarm control panel (FACP). They can also provide a synchronized Code 3 Horn tone and synchronized
strobe when used in conjunction with a Sync Module (SM), Dual Sync Module (DSM) or Wheelock power supplies. They are the ideal choice for applications where
the audible silence feature is required. The NS Appliances are UL Listed under Standard 1971 for Signaling Devices for the Hearing Impaired and UL Standard 464 for
Audible Signal Appliances. The 24V NS is also ULC Listed under Standard CAN/ULC-S526-02 for Visual Signaling Appliances and Standard CAN/ULC-S525-99 for
Audible Signaling Appliances for Fire Alarm Systems. The 1575W candela wall mounted strobes are listed at 15 candela under UL Standard 1971 and meet 75 candela
intensity on axis with low current draw. They are listed for indoor use only and equipped with a NS nounting plate (NSMP) that can be mounted to single-gang,
double-gang, 4" backbox, 100mm European backbox or SHBB surface backbox (See wiring and mounting information). These strobe models are Listed for wall
mounting only. The NS appliances uses a xenon flashtube with solid state circuitry enclosed in a polycarbonate lens to provide maximum visibility and reliability for
effective visible signaling.
Series NS Appliances can be field set for high (HI) or low (LO) dBA sound output.
These strobe models are designed for use with either filtered DC (VDC) or unfiltered full-wave-rectified (FWR) input voltage. All inputs are polarized for compatibility
with standard reverse polarity supervision of circuit wiring by a FACP.
NOTE: The Code 3 temporal pattern (1/2 second on, 1/2 second off, 1/2 second on, 1/2 second off, 1/2 second on, 1-1/2 off and repeat) is specified by ANSI and
NFPA 72 for standard emergency evacuation signaling. The Code 3 Horn should be used only for fire evacuation signaling and not for any other purpose.
NOTE: All Canadian Installations should be in accordance with the Canadian Standard for the Installation of Fire Alarm Systems - CAN/ULC-S524-01 and Canadian
Electrical Code, Part 1. Final acceptance is subject to authorities having jurisdiction (AHJ).
WARNING: PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE USING THIS PRODUCT. FAILURE TO COMPLY WITH ANY OF
THE FOLLOWING INSTRUCTIONS, CAUTIONS AND WARNINGS COULD RESULT IN IMPROPER APPLICATION, INSTALLATION AND/OR
OPERATION OF THESE PRODUCTS IN AN EMERGENCY SITUATION, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS
INJURY OR DEATH TO YOU AND/OR OTHERS.
SPECIFICATIONS:
Regulated
Models
(VDC/VRMS)
NS-241575W*
NS-121575W*
Description
Continuous Horn
Code 3 Horn
1. Strobes will produce 1 flash per second over the "Regulated Voltage" range.
2. Anechoic dBA is measured on axis in a non-reflective (free field) test room using fast meter response. For peak dBA (measured with peak meter response), add
5dBA to anechoic values as shown in Table 2 &2A. Reverberant dBA is a minimum UL rating based on sound pressure measurements in a reverberant test room.
3. All models are UL Listed for indoor use with a temperature range of +32°F to +120°F (0°C to +49°C) and maximum humidity of 93% ± 2% RH. The effect of
shipping and storage temperatures shall not adversely affect the performance of the appliance when it is stored in the original cartons and not subjected to misuse or
abuse.
Copyright 2005 Wheelock, Inc. All rights reserved.
Thank you for using our products.
INSTALLATION INSTRUCTIONS
SERIES NS TWO WIRE APPLIANCES
Voltage Range Limit Per
Voltage UL 464 and UL 1971
(VDC/VRMS)
24 16.0-33.0
12 8.0-17.5
* 1575W models are UL Listed for 15cd and meet 75cd on axis. NS-121575 is not ULC approved.
Table 2: dBA Sound Output for 24VDC Per UL and ULC
Volume
16.0VDC
Low 77
High 83
Low 72
High 79
ULC Directional Characteristics: Rated output 92dBA (Unit set on high volume and 24VDC)
-3dBA: 60 degrees left, 40 degrees right
Table 2A: dBA Sound Output for 12VDC Per UL
Description
Continuous Horn
Code 3 Horn
(WALL MOUNT VERSIONS)
Table 1: UL and ULC Ratings
Voltage Range Per CAN/ULC-S526-02
And CAN/ULC-S525-99
Reverberant Per UL 464
24.0VDC 33.0VDC
81 83
87 90
76 79
82 86
-6dBA: 70 degrees left, 70 degrees right
Volume Reverberant Per UL 464
8.0VDC 12.0VDC
Low 72 76
High 78 83
Low 67 72
High 75 79
(VDC/VRMS)
20.0-31.0
------
Anechoic Per CAN/ULC-S525-99
20.0VDC 24.0VDC
87
90
87
90
17.5VDC
80
86
74
82
Strobe Candela
(cd)
UL ULC
15 75
15 --
31.0VDC
89 91
92 94
89 91
92 94
P84234H
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