wheelock NS-1215W, NS-2415W, NS-24110W, NS-2430W, NS-2475W INSTALLATION INSTRUCTIONS

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Long Branch, NJ 07740
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www.wheelockinc.com

INSTALLATION INSTRUCTIONS

SERIES NS TWO WIRE APPLIANCES

(WALL MOUNT VERSIONS)

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 the 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 Power Supply (PS-12/24-8). 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. They are listed for indoor use only

and equipped with a NS Mounting Plate (NSMP) that can be
mounted to single-gang, double-gang, 4” backbox, 100mm European backbox or SHBB surface backbox (See Mounting Options).
These strobe models are Listed for wall mounting only

. The NS Appliances use a Xenon flashtube with solid state circuitry enclosed

in a rugged Lexan 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: All CAUTIONS and WARNINGS are identified by the symbol

. All warnings are printed in bold capital letters

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:

Table 1: UL Ratings

Models

Regulated

Voltage

(VDC/VRMS)

Voltage

Range

(VDC/VRMS)

Strobe

Candela

(cd)

NS-2415W 24 16.0-33.0 15
NS-2430W 24 16.0-33.0 30
NS-2475W 24 16.0-33.0 75
NS-24110W 24 16.0-33.0 110
NS-1215W 12 8.0-17.5 15

WARNING: THESE APPLIANCES WERE TESTED TO THE OPERATING VOLTAGE LIMITS OF 16-33 VOLTS
FOR 24V MODELS AND 8-17.5 VOLTS FOR 12V MODELS USING FILTERED (DC) OR UNFILTERED FULL-WAVE­RECTIFIED (FWR). DO NOT APPLY 80% AND 110% OF THESE VOLTAGE VALUES FOR SYSTEM OPERATION.

NOTE: THE MAXIMUM WIRE IMPEDENCE BETWEEN STROBES SHALL NOT EXCEED 35 OHMS. THE
MAXIMUM NUMBER OF STROBES ON A SINGLE NAC CIRCUIT SHALL NOT EXCEED 47.

Copyright 2001 Wheelock, Inc. All rights reserved.

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WARNING: CHECK THE MINIMUM AND MAXIMUM OUTPUT OF THE POWER SUPPLY AND STANDBY
BATTERY AND SUBTRACT THE VOLTAGE DROP FROM THE CIRCUIT WIRING RESISTANCE TO DETERMINE
THE APPLIED VOLTAGE TO THE STROBES.

WARNING: THE AUDIBLE STROBE APPLIANCES MUST BE FIELD SET TO THE DESIRED TONE AND dBA
SOUND OUTPUT LEVEL BEFORE THEY ARE INSTALLED. THIS IS DONE BY PROPERLY INSERTING JUMPER
PLUGS IN ACCORDANCE WITH THESE INSTRUCTIONS. INCORRECT SETTINGS WILL RESULT IN IMPROPER
PERFORMANCE, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO YOU
AND/OR OTHERS.

Table 2: dBA Sound Output for 24VDC

Description Volume Reverberant Per UL 464 Anechoic dBA

16.0VDC 24.0VDC 33.0VDC 16.0VDC 24.0VDC 33.0VDC
Low 77 81 83 86 90 92

Continuous Horn High 83 87 90 92 95 97

Low 72* 76 79 86 90 92

Code 3 Horn High 79 82 86 92 95 97

Table 2A: dBA Sound Output for 12VDC

Description Volume Reverberant Per UL 464 Anechoic dBA

8.0VDC 12VDC 17.5VDC 8.0VDC 12.0VDC 17.5VDC
Low 72* 76 80 82 84 86

Continuous Horn High 78 83 86 87 89 91

Low 67* 72* 74* 82 84 86

Code 3 Horn High 75 79 82 87 89 91

WARNING: OPERATING THE 24 VOLT NS AUDIBLE APPLIANCES, SET ON “CODE 3 HORN” WITH LOW dBA
AT MINIMUM VOLTAGE DOES NOT MEET THE 75dBA MINIMUM UL REVERBERANT SOUND LEVEL
REQUIRED FOR PUBLIC MODE FIRE PROTECTION SERVICE (NOTED BY * IN TABLE 2). OPERATING THE 12
VOLT NS AUDIBLE APPLIANCES, SET ON “CODE 3 HORN” WITH LOW dBA OR CONTINOUS HORN WITH LOW
dBA AT MINIMUM VOLTAGE (8VDC/VRMS) DOES NOT MEET 75dBA MINIMUM UL REVERBERANT SOUND
LEVEL REQUIRED FOR PUBLIC MODE FIRE PROTECTION SERVICE (NOTED BY * IN TABLE 2A). THESE
SETTINGS ARE ACCEPTABLE ONLY FOR GENERAL SIGNALING (NON-FIRE ALARM) USE. USE THE “HIGH”
dBA SETTING WITH “CODE 3 HORN” FOR PUBLIC MODE SERVICE.

NOTES:

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. 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

85% RH.

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Table 3: Current Ratings (AMPS) with Hi dBA Setting

Rated Average Current *

Voltage NS-2415W NS-2430W NS-2475W NS-24110W

MEAN RMS MEAN RMS MEAN RMS MEAN RMS

16.0VDC 0.102 0.102 0.140 0.140 0.230 0.235 0.340 0.358

24.0VDC 0.076 0.081 0.102 0.115 0.163 0.195 0.216 0.276

33.0VDC 0.073 0.076 0.093 0.110 0.136 0.176 0.169 0.259

16.0VRMS ------ 0.132 ------ 0.175 ------ 0.290 ------ 0.420

24.0VRMS ------ 0.118 ------ 0.156 ------ 0.254 ------ 0.340

33.0VRMS ------ 0.125 ------ 0.147 ------ 0.230 ------ 0.319
Voltage NS-1215W ------ ------ ------

MEAN RMS ------ ------ ------ ------ ------ ------

8.0VDC 0.237 0.317 ------ ------ ------ ------ ------ ------

12.0VDC 0.138 0.236 ------ ------ ------ ------ ------ ------

17.5VDC 0.101 0.168 ------ ------ ------ ------ ------ ------

8.0VRMS ------ 0.284 ------ ------ ------ ------ ------ ------

12.0VRMS ------ 0.229 ------ ------ ------ ------ ------ ------

17.5VRMS ------ 0.194 ------ ------ ------ ------ ------ ------

Rated Peak Current **

Voltage NS-2415W NS-2430W NS-2475W NS-24110W

16.0VDC 0.181 0.265 0.482 0.675

24.0VDC 0.183 0.270 0.485 0.680

33.0VDC 0.188 0.275 0.489 0.685

16.0VRMS 0.183 0.270 0.485 0.680

24.0VRMS 0.188 0.275 0.489 0.685

33.0VRMS 0.430 0.480 0.520 0.690

Voltage NS-1215W ------ ------ ------

8.0VDC 0.460 ------ ------ ------

12.0VDC 0.465 ------ ------ ------

17.5VDC 0.470 ------ ------ ------

8.0VRMS 0.465 ------ ------ ------

12.0VRMS 0.470 ------ ------ ------

17.5VRMS 0.475 ------ ------ ------

Rated Inrush Current ***

Voltage NS-2415W NS-2430W NS-2475W NS-24110W

16.0VDC 0.110 0.110 0.110 0.110

24.0VDC 0.165 0.165 0.165 0.165

33.0VDC 0.230 0.230 0.230 0.230

16.0VRMS 0.155 0.155 0.155 0.155

24.0VRMS 0.235 0.235 0.235 0.235

33.0VRMS 0.325 0.325 0.325 0.325

Voltage NS-1215W ------ ------ ------

8.0VDC 0.075 ------ ------ ------

12.0VDC 0.103 ------ ------ ------

17.5VDC 0.149 ------ ------ ------

8.0VRMS 0.100 ------ ------ ------

12.0VRMS 0.139 ------ ------ ------

17.5VRMS 0.189 ------ ------ ------

* Rated average current is measured using mean value.

** The time duration for the peak current is 100 microseconds.

*** The time duration for the inrush current is 4 milliseconds.

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