wheelock AS-24MCWH INSTALLATION INSTRUCTIONS

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SERIES AS MULTI-HIGH-CANDELA AUDIBLE STROBE APPLIANCE

GENERAL:

Wheelock’s Series Audible Strobe Multi-High-Candela (AS-24MCWH) Appliance is the industry’s first 2-wire horn strobe alarm appliance that provides two selectable
candela settings (135, 185). Additionally, this appliance can function with a continuous or code 3 horn tone and continuous strobe when connected directly to the fire
alarm control panel (FACP), or 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. The AS-24MCWH appliance is UL Listed under Standard 1971 for Emergency Appliances for the Hearing Impaired and
UL Standard 464 for Audible Signal Appliances. This appliance is listed for wall mounting and indoor use only
that can be mounted to single-gang, double-gang, 4” backbox, 100mm European backbox or SHBB surface backbox (See wiring and mounting information). The AS­24MCWH Appliance uses a xenon flashtube with solid state circuitry enclosed in a polycarbonate lens to provide maximum visibility and reliability for effective visible
signaling.

The AS-24MCWH Appliance can be field set to provide either high (HI) dBA, medium (MED) dBA or low (LO) dBA sound output.

This model is 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.

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

NOTE: 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, CANDELA SETTING,
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:

NOTES:

1. Strobe will produce 1 flash per second over the "Regulated Voltage" range.

2. This strobe/horn model meets the required light distribution patterns defined in UL 1971.

3. This model is UL Listed for indoor use with a temperature range of +32ºF to +120ºF (0ºC to +49ºC) and maximum humidity of 85% 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.

CAUTION: The AS-24MCWH appliance is not designed to be used on coded systems in which the applied voltage is cycled on and off.

WARNING: THESE APPLIANCES WERE TESTED TO THE REGULATED VOLTAGE LIMITS OF 16.0-33.0 VOLTS FOR 24V 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 APPPLIED VOLTAGE TO THE STROBES. THE MAXIMUM
WIRE IMPEDANCE BETWEEN STROBES SHALL NOT EXCEED 35 OHMS.

When calculating the total current: Use Table 3 to determine the highest value of “RMS Current” for an individual AS Appliance then multiply the value by the total
number of AS Appliances. Be sure to add the currents for any other 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: CANDELA SETTING WILL DETERMINE THE CURRENT DRAW OF THE PRODUCT.

Copyright 2005 Wheelock, Inc. All rights reserved. P84449 E

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

Model

AS-24MCWH 24 16.0-33.0 135/185 A,B,C,D

Description Volume Reverberant Per UL 464

16.0VDC 24.0VDC 33.0VDC
Low 80 83 86

Continuous Horn Medium 85 88 91

High 88 91 93
Low 75 79 82

Code 3 Horn Medium 80 84 86

High 84 87 90

INSTALLATION INSTRUCTIONS

(WALL MOUNT VERSION)

Table 1: UL Ratings

Regulated

Voltage

(VDC/VRMS)

Voltage Range

Limit Per UL 1971

(VDC/VRMS)

Table 2: dBA Sound Output

and is equipped with a universal mounting plate (UMP)

Strobe

Candela

Mounting

Options

(cd)

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Table 3: Current Ratings (AMPS)

Maximum RMS Current with Hi dBA Setting

Voltage 135cd 185cd
DC 16.0-33.0VDC 0.335 0.460
FWR 16.0-33.0VRMS 0.470 0.665

Maximum RMS Current with Med dBA Setting

Voltage 135cd 185cd
DC 16.0-33.0VDC 0.340 0.465
FWR 16.0-33.0VRMS 0.480 0.675

Maximum RMS Current with Low dBA Setting

Voltage 135cd 185cd
DC 16.0-33.0VDC 0.335 0.470
FWR 16.0-33.0VRMS 0.460 0.665

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.

WARNING: MAKE SURE THAT THE TOTAL RMS CURRENT 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.

CANDELA AND SOUND OUTPUT SETTINGS:

To set the candela, slide the switch to the desired setting. The setting is indicated by the pointer and label visible on the bottom side of the lens.

Figure 1: Figure 2: Showing Location of Jumper Plug

CODE 3

CANDELA

185

135

SLIDE
SWITCH

CANDELA
POINTER

HI
MED

BOTTOM VIEW

Back View

Factory setting is on Medium dB, Code 3 and 185 candela.

WARNING: THE CANDELA SELECT SWITCH MUST BE FIELD SET TO THE REQUIRED CANDELA INTENSITY BEFORE INSTALLATION.
WHEN CHANGING THE SETTING OF THE CANDELA SELECT SWITCH, MAKE CERTAIN THAT IT “CLICKS” IN PLACE. AFTER CHANGING
THE CANDELA SETTING, THE APPLIANCE MUST BE RETESTED TO VERIFY PROPER OPERATION. IMPROPER SETTING OF THE CANDELA
SELECT SWITCH, MAY RESULT IN OPERATION AT THE WRONG CANDELA, WHICH COULD RESULT IN PROPERTY DAMAGE AND SERIOUS
INJURY OR DEATH TO YOU AND/OR OTHERS.

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.

Figure 3: Jumper plug settings for High, Medium, Low and Code 3 Figure 4: Jumper plug setting for Continuous Horn

SHOWN SET ON HIGH dB

HI

MED

LOW

(Use needle nose pliers to pull and properly set the jumper plugs)

WIRING AND MOUNTING INFORMATION:

CAUTION: The following figures (A-D) show the maximum number of field wires (conductors) that can enter the backbox used with each mounting option. If

these limits are exceeded, there may be insufficient space in the backbox to accommodate the field wires and stresses from the wires could damage the product. Check

NOTE: The AS-24MCWH must be set for Code 3 when used with a synchronized notification appliance circuit (NAC).

SHOWN SET ON MED dB

SHOWN SET ON LOW dB

CODE 3

No jumper plug is needed for continuous horn setting. However, it is
recommended that the jumper plug be retained in the unit for future
use (if needed) as shown in Figure 4.

LO

TURN PLUG 90°

P84449 E

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