Wheelock SM Installation Manual

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Long Branch, N.J. 07740
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INSTALLATION INSTRUCTIONS

SERIES SM AND SMX SYNCHRONIZATION (SYNC) MODULE

GENERAL:

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

Wheelock’s Sync Modules (Series SM) are uniquely designed to accept two independent strobe and audible inputs and convert to a
single output that connects to Wheelock’s Series AS and NS appliances. When interfaced with the sync module, the audible strobes
produce the synchronized code 3 horn and synchronized strobe upon actuation. The audible portion of the AS and NS can be
controlled independently from the strobe, using only a 2-wire alarm circuit. They are the ideal choice for alarm systems where an
audible silencing feature is required during an alarm condition. The SM is UL Listed under Standard 1971 (Emergency Appliances
for the Hearing Impaired) for indoor use Fire Protective Service and ULC Listed under CAN/ULC-S525-99 for Audible Signaling
Appliances for Fire Alarm Systems. All inputs are polarized for compatibility with standard reverse polarity supervision of circuit
wiring by a Fire Alarm Control Panel (FACP).

The table below shows the additional Wheelock products that can be used with the SM Sync Modules.

Table 1: Products Available for Use with SM Sync Module

Series AH/AH-WP, NH, HS Audible Horn
Series MT with Strobe Multitone Horn with Sync Strobes
Series E70/90 with Strobe E Speakers with Sync Strobe
Series ET70/90/1080/1081 with Strobe ET Speakers with Sync Strobe
Series RSS/RSSP Strobes Remote Sync Strobes
Series CH70 Strobes Chimes with Strobes

NOTE: All CAUTIONS and WARNINGS are identified by the symbol . All warnings are printed in bold capital letters.

WARNING: THE SM APPLIANCE IS A "FIRE ALARM DEVICE - DO NOT PAINT."

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.

WARNING: PLEASE 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:

Series AS, NS, HS4 Audible Horn with Sync Strobes

Table 2: Ratings Per UL and ULC

Model

Regulated

Voltage

(VDC/VRMS)

Voltage Range Limit

Per UL 1971

(VDC/VRMS)

Voltage Range Per

CAN/ULC-S525-99

(VDC/VRMS)

Mounting

Option

SM-12/24 12/24 8.0-33.0 10.5-31.0 A
SMX-12/24 * 12/24 8.0-33.0 10.5-31.0 ----

* SMX is a UL recognized component; SMX is a ULC Listed model.

WARNING: FOR UL APPLICATIONS THESE APPLIANCES WERE TESTED TO THE OPERATING VOLTAGE LIMITS OF 8.0-

33.0 VOLTS USING FILTERED (DC) OR UNFILTERED FULL-WAVE RECTIFIED (FWR). DO NOT APPLY 80% AND 110% OF
THESE VOLTAGE VALUES FOR SYSTEM OPERATION.

WARNING: FOR ULC APPLICATIONS THESE APPLIANCES WERE TESTED TO THE OPERATING VOLTAGE OF 10.5-31.0
VOLTS FOR 24V MODELS USING FILTERED (DC) OR UNFILTERED FULL-WAVE-RECTIFIED (FWR). APPLY 80% AND 110%
OF THESE VOLTAGE VALUES FOR SYSTEM OPERATIONS.

The SMX version does not have a mounting plate.

Copyright 2004 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.

Table 3: UL Current Ratings (AMPS)

UL Voltage

DC 8-33VDC 0.038 0.010
FWR 8-33VRMS 0.055 0.012

ULC Rated Average Rated Peak * Rated Inrush *

Voltage Current Current Current

In1 Audible In1 Audible In1 Audible

10.5VDC 0.017 0.004 0.055 0.004 0.140 0.016

12.0VDC 0.017 0.004 0.060 0.004 0.160 0.019

24.0VDC 0.028 0.008 0.070 0.008 0.320 0.030

31.0VDC 0.038 0.010 0.080 0.010 0.440 0.040

10.5VRMS 0.026 0.006 0.085 0.008 0.210 0.016

12.0VRMS 0.028 0.006 0.090 0.009 0.225 0.019

24.0VRMS 0.040 0.010 0.120 0.015 0.446 0.033

31.0VRMS 0.055 0.012 0.150 0.022 0.645 0.056

* Time duration for the peak and inrush current is 6 milliseconds.

Table 3A: ULC Current Ratings (AMPS)

Maximum RMS

Current Draw

In1 Audible

WARNING: MAKE SURE THAT THE TOTAL RMS CURRENT, TOTAL AVERAGE CURRENT AND TOTAL
PEAK CURRENT REQUIRED BY ALL APPLIANCES THAT ARE CONNECTED TO THE SYSTEM’S PRIMARY AND
SECONDARY POWER SOURCES, NAC CIRCUITS, SM, DSM SYNC MODULES OR WHEELOCKS POWER
SUPPLIES 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 currents: Use Table 3 to determine the highest value of “RMS Current” for an individual strobe (across
the expected operating voltage range of the strobe), use Table 3A to determine the highest value of “Rated Average Current” or
“Rated Peak Current” of an individual strobe (across the expected voltage range of the strobe), then multiply these values 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’ peak 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.

WIRING INFORMATION:

NOTE: Non-sync appliances can be installed before or after an SM or DSM. If the non-sync appliance requires audible silence, four

wire connection is necessary with the strobe circuit connected before the SM or DSM NAC circuit, and the audible leads connected to
a silenceable NAC circuit from the FACP.

CAUTION: Power Supply may be used in conjunction with the SM Sync Modules ONLY in the order shown in Figure 1. Only
one SM Sync Module shall be allowed on a signaling circuit. Do not connect the Power Supply to the signaling circuit after the one
SM Sync Module. Exception: The Wheelock PS-12/24-8 Power Supply (UL Only) can be connected either before or after the SM
Sync Module. Refer to Power Supply instruction manuals for proper application or installation.

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