Wheelock CH70-24MCWH Series Installation Instructions

273 Branchport Avenue
Long Branch, N.J. 07740
(800) 631-2148
www.wheelockinc.com
Use this product according to this instruction manual. Please keep this instruction manual for future reference.

GENERAL:

Wheelock's Series CH70-24MCWH Multi-High-Candela Electronic Chime Strobe is UL Listed under Standard 1971 for Signaling Devices for the Hearing Impaired
and UL Standard for Private Mode Audible Signal Appliances. The CH70-24MCWH Chime Strobe is designed for low current draw and versatile performance. This
model offers a choice of single stroke or vibrating operation, has adjustable sound level, and has a chime tone adjustable from 800 to 1200Hz. The CH70-24MCWH
Multi-High-Candela strobe provides two selectable light output intensities in one unit. This appliance also incorporates a Chime Mounting Plate attached to the chime
for ease of installation. The Chime Strobe model 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. The strobe uses
a xenon flashtube with solid state circuitry enclosed in a polycarbonate lens to provide maximum visibility and reliability for effective visible signaling. The CH70-
24MCWH is Listed for indoor use, wall mount only with the backboxes specified in these instructions (see wiring and mounting information).
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:

Models
CH70-24MCWH
NOTES:
1. The strobe will produce 1 flash per second over the "Regulated Voltage" range.
2. The strobes meet the required light distribution patterns defined in UL 1971.
3. The CH70-24MCWH model is 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. 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 is not subjected
to misuse or abuse.
4. The Chime must be set at maximum volume for Private Mode Fire Protective Service per UL 464 listing requirements (see page 3).
5. The chime produces a brief inrush current of 0.100 Amps with filtered DC input (0.140 Amps with full-wave-rectified (VRMS) input) with a time duration of 100
milliseconds.
WARNING: CANDELA SETTING WILL DETERMINE THE CURRENT DRAW OF THE PRODUCT.
When calculating the total currents use Table 2 to determine the highest value of RMS current for an individual 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 to include any required safety
factors.
NOTE: The maximum number of strobes on a single notification appliance circuit shall not exceed 50.
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: 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.
CAUTION: Strobes are not designed to be used on coded systems in which the applied voltage is cycled on and off.
Copyright 2005 Wheelock, Inc. All rights reserved.
Thank you for using our products.
SERIES CH70-24MCWH MULTI-HIGH CANDELA CHIME STROBE
Table 1: UL Listed Models and Ratings
Regulated Voltage
Voltage Range
(VDC/VRMS) (VDC/VRMS)
24 16.0-33.0
Table 2: UL Current Ratings (Strobe Only)
UL Voltage
DC 16-33VDC
FWR 16-33VRMS
INSTALLATION INSTRUCTIONS
Maximum RMS
Current (Chime Only)
(ADC)
0.022
Maximum RMS Current (Amps)
135cd
0.300
0.455
dBA at 10 Feet
Reverberant
Min Max
52 58
185cd
0.420
0.645
Strobe
Candela
135/185
P84467D
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