wheelock NS4-24MCW-FR, NS4-24MCW-FW INSTALLATION INSTRUCTIONS

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SERIES NS4-MCW MULTI-CANDELA FOUR WIRE APPLIANCE

INSTALLATION INSTRUCTIONS

www.wheelockinc.com

(WALL MOUNT VERSION)

Use this product according to this instruction manual. Please keep this instruction manual for future reference.

GENERAL:

Wheelock’s Series NS4-MCW Multi-Candela Horn Strobe provides four selectable candela settings (15, 30, 75, 110). The NS4­MCW allows for independent operation of the strobe circuit and the horn circuit. It is the ideal choice for retrofit applications as well
as new installations. The NS4-MCW Appliance is UL Listed under Standard 1971 for Signaling Devices for the Hearing Impaired
and UL Standard 464 for Audible Signal Appliances. The NS4-MCW is also ULC Listed under Standard CAN/ULC-S526-M87 for
Visual Signaling Appliances and Standard CAN/ULC-S525-99 for Audible Signaling Appliances for Fire Alarm Systems. It is listed
for indoor use only

and equipped with an 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). This strobe model is Listed for wall mounting only
The NS-MCW Appliance uses a Xenon flashtube with solid state circuitry enclosed in a rugged Lexan lens to provide maximum
visibility and reliability for effective visible signaling.

The horn portion of the NS4-MCW Appliance can be field set to provide either Continuous Horn or Code 3 Horn. The sound output
can be field set for High (HI) or Low (LO) dBA.

The NS4-MCW Horn Strobe can also be used with a Sync Module (SM), Dual Sync Module (DSM) or Power Supply (PS-12/24-8) to
provide synchronized strobe and synchronized Code 3 signal.

This strobe model is designed for use with either filtered DC (VDC) or unfiltered Full-Wave-Rectified (VRMS) input voltage. All
inputs are polarized for compatibility with standard reverse polarity supervision of circuit wiring by a FACP.

: All

NOTE

WARNING: THE NS HORN STROBE IS A "FIRE ALARM DEVICE - DO NOT PAINT."

NOTE

CAN/ULC

CAUTIONS

: All Canadian Installations should be in accordance with the Canadian Standard for the Installation of Fire Alarm Systems

-S524-01 and Canadian Electrical Code, Part 1. Final acceptance is subject to Authorities Having Jurisdiction.

and

WARNINGS

WARNING: READ THESE INSTRUCTIONS CAREFULLY. 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 Strobe

Settings Voltage Candela

(VDC/VRMS)

NS4-24MCW 24 16.0-33.0 20.0-33.0 15/30/75/110

Description Volume Reverberant Per UL 464 Anechoic Per CAN/ULC-S525-99

16.0VDC 24.0VDC 33.0VDC 20.0VDC 24.0VDC 31.0VDC
Low 77 81 33 87 89 91

Continuous Horn High 83 87 90 90 92 94

Low 72* 76 79 87 89 91

Code 3 Horn High 79 82 86 90 92 94

are identified by the symbol . All warnings are printed in bold capital letters

Table 1: Ratings Per UL and ULC

Voltage Range Limit

Per UL 1971

(VDC/VRMS)

Table 2: dBA Sound Output for 24VDC

Voltage Range Per

CAN/ULC-S526-M87

(VDC/VRMS) (cd)

ULC Directional Characteristics: Rated output 92dBA (Unit set on high volume and 24VDC)

-3dBA: 60 degrees left, 40 degrees right

-6dBA: 70 degrees left, 70 degrees right

NOTES:

1. The Strobe 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. This model is UL Listed for indoor use with a temperature range of +32oF to +120oF (0oC to +49oC) and
maximum humidity of 93% RH ± 2%.

NOTE: THE MAXIMUM WIRE IMPEDANCE BETWEEN STROBES SHALL NOT EXCEED 35 OHMS. THE MAXIMUM NUMBER
OR STROBES ON A SINGLE NOTIFICATION APPLIANCE CIRCUIT SHALL NOT EXCEED 47.

Copyright 2001 Wheelock, Inc. All rights reserved.

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.

-

WARNING: OPERATING THE NS AUDIBLE APPLIANCES, SET ON "CODE 3 HORN", LOW dBA AT MINIMUM VOLTAGE
(16.0VDC) WILL NOT MEET THE 75dBA MINIMUM UL REVERBERANT SOUND LEVEL REQUIRED FOR PUBLIC MODE FIRE
PROTECTION SERVICE (NOTED BY * IN TABLE 2). THIS SETTING IS ACCEPTABLE ONLY FOR GENERAL SIGNALING (NON­FIRE ALARM) USE. USE THE "HIGH" dBA SETTING WITH THIS TONE FOR PUBLIC MODE SERVICE.

WARNING: FOR ULC VERSIONS THESE APPLIANCES WERE TESTED TO THE OPERATING VOLTAGE OF 20.0-31.0 VOLTS
FOR 24V MODELS USING FILTERED (DC) OR UNFILTERED FULL-WAVE-RECTIFIED (FWR). APPLY 80% AND 110% OF
THESE VOLTAGE VALUES FOR SYSTEM OPERATIONS.

WARNING: FOR UL VERSIONS THESE APPLIANCES WERE TESTED TO THE OPERATING VOLTAGE LIMITS OF 16.0-33.0
VOLTS FOR 24V MODELS USING FILTERED (DC) OR UNFILTERED FULL-WAVE-RECTIFIED (FWR). DO NOT APPLY 80%
AND 110% OF THESE VOLTAGE VALUES FOR SYSTEM OPERATION.

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 APPPLIED VOLTAGE TO
THE STROBES.

WARNING: CANDELA SETTING WILL DETERMINE THE CURRENT DRAW OF THE PRODUCT.

UL range rating limits are 16.0-33.0VDC; ULC ratings are 20.0-31.0VDC (tested range -20% below 10% above rated voltage range).

Table 3: UL/ULC Current Ratings (AMPS)

Rated Average Current

Voltage Voltage 15cd 30cd 75cd 110cd

16.0VDC 20.0VDC 0.080 0.128 0.252 0.328

24.0VDC 24.0VDC 0.054 0.083 0.155 0.187

33.0VDC 31.0VDC 0.045 0.068 0.115 0.141

16.0VRMS 20.0VRMS 0.116 0.194 0.361 0.487

24.0VRMS 24.0VRMS 0.093 0.141 0.231 0.289

33.0VRMS 31.0VRMS 0.094 0.115 0.188 0.224
Rated Peak Current

UL Voltage ULC Voltage 15cd 30cd 75cd 110cd

16.0VDC 20.0VDC 0.136 0.186 0.360 0.452

24.0VDC 24.0VDC 0.091 0.142 0.250 0.307

33.0VDC 31.0VDC 0.140 0.190 0.306 0.458

16.0VRMS 20.0VRMS 0.432 0.675 1.415 1.610

24.0VRMS 24.0VRMS 0.525 0.640 0.930 1.240

33.0VRMS 31.0VRMS 0.920 1.000 1.130 1.210

* The time duration for the peak current is 1 millisecond. NOTE: Inrush current is less than rated peak current.

Table 3A: UL/ULC Horn Current Ratings (AMPS)

UL Voltage ULC Voltage High dBA Low dBA

16.0VDC 20.0VDC 0.019 0.012

24.0VDC 24.0VDC 0.028 0.015

33.0VDC 31.0VDC 0.039 0.018

16.0VRMS 20.0VRMS 0.029 0.016

24.0VRMS 24.0VRMS 0.044 0.019

33.0VRMS 31.0VRMS 0.061 0.022

WARNING: MAKE SURE THAT THE TOTAL AVERAGE CURRENT AND TOTAL PEAK REQUIRED BY ALL APPLIANCES
THAT ARE CONNECTED TO THE SYSTEM’S PRIMARY AND SECONDARY POWER SOURCES, NAC CIRCUITS, SM, DSM SYNC
MODULES AND PS-12/24-8 POWER SUPPLY DO NOT EXCEED THE POWER SOURCES’ RATED CAPACITY OR THE CURRENT
RATINGS OF ANY FUSES ON THE CIRCUITS TO WHICH THESE APPLIANCES ARE WIRED. OVERLOADING POWER
SOURCES OR EXCEEDING FUSE RATINGS COULD RESULT IN LOSS OF POWER AND FAILURE TO ALERT OCCUPANTS
DURING AN EMERGENCY, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS INJURY OR DEATH TO YOU
AND/OR OTHERS.

When calculating the total average or peak currents: Use Table 3 and 3A to determine the highest value of “Rated Average Current”
for an individual strobe (across the expected operating voltage range of the strobe), or use Table 3 to determine the highest value of
“Rated Peak Current” (whichever is higher) of an individual strobe (across the expected voltage range of the strobe), then multiply the
value by the total number of strobes; be sure to add the currents for any other appliances, including audible signaling appliances,
powered by the same source and include any required safety factors.

If the peak current exceeds the power supplies’ inrush capacity, the output voltage provided by the power supplies may drop below the
listed voltage range of the appliances connected to the supply and the voltage may not recover in some types of power supplies. For
example, an auxiliary power supply that lacks filtering at its output stage (either via lack of capacitance and/or lack of battery backup
across the output) may exhibit this characteristic.

CAUTION

: Strobes are not designed to be used on coded systems in which the applied voltage is cycled on and off.

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LIGHT DISTRIBUTION PER UL 1971 AND CAN/ULC-S526-M87:

Table 4: Horizontal Plane (UL 1971)

Horizontal 15cd 30cd 75cd 110cd

Angle (in deg.) UL Min. Typ. 15cd UL Min. Typ. 30cd UL Min. Typ. 75cd UL Min. Typ. 110cd

0 15.0 25 30.0 47 75.0 115 110.0 149
5 13.5 24 27.0 48 67.5 115 99.0 153
10 13.5 24 27.0 48 67.5 113 99.0 151
15 13.5 24 27.0 47 67.5 112 99.0 153
20 13.5 22 27.0 47 67.5 110 99.0 146
25 13.5 22 27.0 46 67.5 107 99.0 149
30 11.3 22 22.5 44 56.3 109 82.5 145
35 11.3 23 22.5 44 56.3 104 82.5 140
40 11.3 22 22.5 44 56.3 104 82.5 135
45 11.3 24 22.5 48 56.3 110 82.5 152
50 8.3 23 16.5 44 41.3 104 60.5 142
55 6.8 18 13.5 34 33.8 79 49.5 101
60 6.0 17 12.0 34 30.0 82 44.0 104
65 5.3 16 10.5 32 26.3 78 38.5 102
70 5.3 15 10.5 31 26.3 75 38.5 95
75 4.5 13 9.0 27 22.5 66 33.0 81
80 4.5 9 9.0 18 22.5 40 33.0 56
85 3.8 4 7.5 9 18.8 22 27.5 31
90 3.8 8 7.5 15 18.8 38 27.5 48

Table 4A: Vertical Plane (UL 1971)

Vertical 15cd 30cd 75cd 110cd

Angle (in deg.) UL Min. Typ. 15cd UL Min. Typ. 30cd UL Min. Typ. 75cd UL Min. Typ. 110cd

0 15.0 23 30.0 49 75.0 116 110.0 155
5 13.5 26 27.0 51 67.5 123 99.0 166
10 13.5 21 27.0 42 67.5 105 99.0 139
15 13.5 19 27.0 39 67.5 95 99.0 134
20 13.5 19 27.0 36 67.5 82 99.0 116
25 13.5 17 27.0 34 67.5 83 99.0 114
30 13.5 16 27.0 32 67.5 79 99.0 107
35 9.8 16 19.5 33 48.8 86 71.5 114
40 6.9 13 13.8 27 34.5 61 50.6 84
45 5.1 7 10.2 14 25.5 34 37.4 48
50 4.1 6 8.1 13 20.3 32 29.7 43
55 3.3 6 6.6 13 16.5 31 24.2 42
60 2.7 6 5.4 12 13.5 30 19.8 39
65 2.4 6 4.8 12 12.0 28 17.6 37
70 2.3 6 4.5 12 11.3 28 16.5 39
75 2.0 5 3.9 11 9.8 26 14.3 36
80 1.8 5 3.6 10 9.0 25 13.2 33
85 1.8 5 3.6 11 9.0 27 13.2 35
90 1.8 2 3.6 5 9.0 11 13.2 16

Table 4B: ULC Light Output on Axis Rating

CAN/ULC- 15cd Setting 30cd Setting 75cd Setting 110cd Setting

S526-M87 Min. Typ. Min. Typ. Min. Typ. Min. Typ.

Min. 2cd 15.0 25.0 30.0 47.0 75.0 115.0 110.0 149.0

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