wheelock MT-121575, MT-241575, MT-24MCW INSTALLATION INSTRUCTIONS

273 Branchport Avenue Thank you for using our products.
Long Branch, NJ 07740
[phone] (USA) INSTALLATION INSTRUCTIONS
[phone] (CANADA) MULTITONE STROBE APPLIANCES
www.wheelockinc.com

GENERAL:

The Multitone Strobe Appliances are UL Listed under Standard 1971 for Signaling Devices for the Hearing Impaired and UL Standard 464 for Audible Signal
Appliances. The 15cd model strobe is listed at 15 candela under UL Standard 1971 and meets 75 candela intensity on axis with low current draw. The 24MCW model
strobe can provide 4 selectable candela settings (15, 30, 75, 110). The Multitone MT-241575W and MT-121575W Appliances are also ULC Listed under Standard
CAN/ULC-S526-02 for Visual Signaling and under Standard CAN/ULC-S525-99 for Audible Signal Devices for Fire Alarm Systems. The MT Strobes can provide a
non-synchronized strobe appliance when connected directly to a fire alarm control panel (FACP), or provide a synchronized strobe appliance when used in conjunction
with a Sync Module (SM), Dual Sync Module (DSM) or Wheelock power supplies. All models in the MT Series are listed for wall mount only,
specified in these instructions (See wiring and mounting information). The Multitone Strobe Appliances use a xenon flashtube with solid state circuitry enclosed in a
polycarbonate lens to provide maximum visibility and reliability for effective visible signaling.

Multitone Strobe Appliances can be field set to produce any one of eight commonly used alarm tones. Sound output can be field set to provide either HIGH (HI) dBA
or STANDARD (STD) dBA sound output level.

All Multitone Strobe models are designed for use with either filtered DC or unfiltered full-wave-rectified (FWR) input voltage. The Multitone Strobe Appliances have
separate input terminals for alarm tone activation and strobe activation. Shunt wires are provided to operate both the alarm tone and the strobe simultaneously on a
single input circuit (See Wiring Diagram). All inputs are polarized for compatibility with standard reverse polarity supervision of circuit wiring by a fire alarm control
panel (FACP).

NOTE: All Canadian installations should be in accordance with the Canadian Standard for the Installation of Fire Alarm Systems, CAN/ULC-S524-01 and the
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:

Model

MT-121575W 12 8.0-17.5 85-100 10.5–15.6 75 85-100

MT-24MCW 24 16.0-33.0 15/30/75/110 76-94 ------ ------ ------

MT-241575W 24 16.0-33.0 15 * 76-94 20.0-31.0 75 85-100

NOTES:

1. Strobes will produce 1 flash per second over the “Regulated Voltage” Range.

2. The strobe meets the required light distribution patterns defined in UL 1971 and ULC-S526-02.

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.

WARNING: THESE APPLIANCES WERE TESTED TO THE REGULATED VOLTAGE LIMITS OF 16.0-33.0 VOLTS FOR 24V MODELS AND 8.0-

17.5 VOLTS FOR 12V MODELS USING FILTERED DC OR UNFILTERED FULL-WAVE-RECTIFIED VOLTAGE. DO NOT APPLY VOLTAGE
OUTSIDE OF THIS RANGE.

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. THE MAXIMUM
WIRE IMPEDENCE BETWEEN STROBES SHALL NOT EXCEED 35 OHMS.

CAUTION: These notification appliances are UL Listed as “Regulated”. They are intended to be used with FACPs whose notification circuits are UL Listed as

“Regulated.” These appliances shall not be used on UL Listed “Special Application” notification circuits unless the appliances are identified to be compatible in the
installation instructions of the FACP or unless the FACP is identified to be compatible in this instruction manual.

Use Tables 2, 2A, 3, and 3A to determine the highest value of “Rated Current” for an individual Multitone strobe (across the expected operating voltage range of the
Multitone strobe). Add strobe current from Table 3 or 3A to audible appliance current from Table 2 and 2A to obtain total current for each unit, if the strobe and
audible are wired to operate in unison on a single circuit. 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.

NOTE: The maximum number of strobes on a single notification appliance circuit shall not exceed 50.

WARNING: MAKE SURE THAT THE TOTAL RMSURRENT REQUIRED BY ALL APPLIANCES THAT ARE CONNECTED TO THE SYSTEM’S PRIMARY AND
SECONDARY POWER SOURCES, APPLIANCE CIRCUITS, SM, DSM SYNC MODULES AND WHEELOCK POWER SUPPLIES DOES 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.

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

Table 1: UL/ULC Listed Models and Ratings

UL Ratings ULC Ratings

Regulated

Voltage

(VDC/VRMS)

Voltage

Range

(VDC/VRMS)

Reverberant

dBA

At 10 Feet

Voltage

Range

(VDC/VRMS)

Strobe Candela

(cd)

* 15cd models are UL Listed at 15cd and meet 75cd on axis.

with the backboxes

Anechoic

dBA

at 10 Feet

Copyright 2005 Wheelock, Inc. All rights reserved. P84155 M

Sheet 1 of 6

Table 2: UL Current Ratings for Multitone (AMPS)

Tone Tone

Maximum RMS Current

Description 24VDC 24VRMS 12VDC 12VRMS

HI STD HI STD HI STD HI STD
Horn Broadband Horn (Continuous) 0.108 0.044 0.087 0.045 0.177 0.034 0.172 0.034
Bell 1560 Hz Modulated (0.07 Sec. ON/Repeat) 0.053 0.024 0.051 0.028 0.095 0.020 0.095 0.023
March Time Horn Horn (0.25 Sec. ON/0.25 Sec. OFF/Repeat) 0.104 0.087 0.087 0.045 0.142 0.034 0.142 0.039
Code 3 Horn Horn (ANSI S3.41 Temporal Pattern) 0.091 0.035 0.087 0.045 0.142 0.034 0.142 0.039
Code 3 Tone 500 Hz (ANSI S3.41 Temporal Pattern) 0.075 0.035 0.056 0.029 0.105 0.021 0.105 0.023
Slow Whoop 500-1200Hz Sweep (4.0 Sec. ON/0.5 Sec. OFF/Repeat) 0.098 0.037 0.092 0.042 0.142 0.035 0.142 0.038
Siren 600-1200Hz Sweep (1.0 Sec. ON/Repeat) 0.104 0.036 0.092 0.040 0.152 0.030 0.152 0.034
HI/LO 1000/800 Hz (0.25 Sec. ON/Alternate) 0.057 0.025 0.058 0.032 0.114 0.026 0.114 0.029

Table 2A: ULC Average Current Ratings for 24VDC and 12VDC Multitone (AMPS)

HI/LO 24VDC Models 12VDC Models

Tone

Volume 20VDC 24VDC 31VDC 10.5VDC 12VDC 15.6VDC

HI 0.036 0.040 0.050 0.090 0.100 0.125

Horn

STD 0.021 0.023 0.029 0.018 0.020 0.025

HI 0.013 0.014 0.018 0.028 0.031 0.039

Bell

STD 0.011 0.012 0.015 0.009 0.010 0.013

HI 0.036 0.040 0.050 0.090 0.100 0.125

March Time

STD 0.021 0.023 0.029 0.018 0.020 0.025

HI 0.036 0.040 0.050 0.090 0.100 0.125

Code 3 Horn

STD 0.021 0.023 0.029 0.018 0.020 0.025

HI 0.025 0.028 0.035 0.054 0.060 0.075

Code 3 Tone

STD 0.015 0.017 0.021 0.014 0.015 0.019

HI 0.043 0.048 0.06 0.090 0.100 0.125

Slow Whoop

STD 0.023 0.026 0.033 0.023 0.025 0.031

HI 0.032 0.036 0.045 0.074 0.082 0.103

Siren

STD 0.021 0.023 0.029 0.018 0.020 0.025

HI 0.018 0.020 0.025 0.040 0.044 0.055

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

HI/LO

STD 0.013 0.014 0.018 0.011 0.012 0.015

Table3: Current Ratings for 24MCW Models (Strobe only)

Maximum RMS Current (AMPS)

Voltage 15cd 30cd 75cd 110cd
DC 16-33VDC 0.060 0.092 0.165 0.220
FWR 16-33VRMS 0.102 0.155 0.253 0.347

Table 3A: Current Ratings for 1575W Models (Strobe Only)

Maximum RMS Current (AMPS)

Voltage 241575W UL Voltage 121575W
DC 16-33VDC 0.090 DC 8-17.5VDC 0.255
FWR 16-33VRMS 0.145 FWR 8-17.5VRMS 0.335

Table 4: dBA Ratings

Tone

Horn

Bell

HI/LO

Volume

16V 24V 33V 8V 12V 17.5V 20V 24V 31V 10.5V 12V 15.6V

HI 89 92 94 89 92 94 97 99 100 97 99 100

STD 84 87 90 84 87 90 91 93 94 91 93 94

HI 83 86 88 83 86 88 90 92 93 90 92 93

STD 76 80 83 76 80 83 85 87 88 85 87 88

dBA Reverberant Ratings Per UL 464 dBA Anechoic Ratings Per CAN/ULC S525-99

UL 24VDC UL 12VDC ULC 24VDC ULC 12VDC

HI 86 89 91 86 89 91 97 99 100 97 99 100 March

Time

STD 80 84 87 80 84 87 91 93 94 91 93 94

HI 85 88 90 85 88 90 97 99 100 97 99 100 Code 3

Horn

STD 79 83 86 79 83 86 91 93 94 92 93 94

HI 81 85 86 81 85 86 93 95 96 93 95 96 Code 3

Tone

STD 76 80 82 76 80 82 88 90 91 88 90 91

HI 87 90 92 87 90 92 97 99 100 97 99 100 Slow

Whoop

Siren

HI/LO

STD 81 85 87 81 85 87 92 94 95 92 94 95

HI 86 89 92 86 89 92 96 98 99 96 98 99

STD 81 84 87 81 84 87 91 93 94 91 93 94

HI 83 86 89 83 86 89 91 93 94 91 93 94

STD 77 81 84 77 81 84 86 88 89 86 88 89

ULC Directional Characteristics:

Voltage range of 20.0-31.0VDC for 24VDC or 10.5-15.6VDC for 12VDC. -3 dBA at 48 degrees left, 41 degrees right, -6 dBA at 50 degrees left, 58 degrees right.

P84155 M

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