Wheelock MT-12/24 - User Manual

P82467-001 F
Sheet 1 of 6
273 Branchport Ave.
Long Branch, N.J. 07740 Thank you for using our products.
(800) 631-2148
www.wheelockinc.com
INSTALLATION INSTRUCTIONS
MULTITONE APPLIANCES
MT-12/24, MT4-12/24
Use this product according to this instruction manual. Please keep this instruction
manual for future reference.
GENERAL:
Multitone Appliances are UL Listed for Fire Protective Service and for General Signaling Service. They are listed for both indoor
and outdoor use with the backboxes specified in these instructions. (See Mounting Options A,B,C,D,E,F,G for MT models and H for
MT4 models). Multitone 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. Multitone Appliances can be field set for
either 12VDC or 24VDC operation and are designed for use with either filtered or unfiltered (full-wave-rectified) input voltage. All
inputs are polarized for compatibility with standard reverse polarity supervision of circuit wiring by a Fire Alarm Panel.
NOTE: All CAUTIONS and WARNINGS are identified by the symbol
. All warnings are printed in bold capital letters.
WARNING: PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE USING THIS PRODUCT. THE
MULTITONE APPLIANCE MUST BE FIELD SET TO THE DESIRED INPUT VOLTAGE, dBA SOUND OUTPUT
LEVEL AND ALARM TONE BEFORE THEY ARE INSTALLED. THIS IS DONE BY PROPERLY INSERTING A
JUMPER PLUG AND ADJUSTING A FOUR POSITION SWITCH IN ACCORDANCE WITH THESE INSTRUCTIONS.
INCORRECT SETTINGS WILL RESULT IN IMPROPER PERFORMANCE AND MAY DAMAGE THE PRODUCT,
AND COULD RESULT IN PROPERTY DAMAGE, SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.
SPECIFICATIONS:
Table 1: dBA and Current Ratings For Multitone Appliances
Typical Anechoic Rated Reverberant dBA
Input Current Input Current dBA at 10 Feet At 10 Feet Per UL 464
Tone AMPS @ 24VDC AMPS @ 12VDC At Nominal At Minimum At Nominal
Input Voltage Input Voltage Input Voltage
HI STD HI STD HI STD HI STD HI STD
Horn 0.040 0.023 0.100 0.020 101 95 88 82 91 85
Bell 0.014 0.012 0.031 0.010 94 89 82 75 85 79
March Time Horn 0.040 0.023 0.100 0.020 101 95 85 79 88 82
Code 3 Horn 0.040 0.023 0.100 0.020 101 95 85 75 85 79
Code 3 Tone 0.028 0.017 0.060 0.015 97 92 79 75 82 75
Slow Whoop 0.048 0.026 0.100 0.025 101 96 88 82 88 82
Siren 0.036 0.023 0.082 0.020 100 95 85 82 88 82
HI/LO 0.020 0.014 0.044 0.012 95 90 82 79 85 79
Add 25% more input current when operating the unit at maximum input voltage (15.6VDC for 12VDC models, 31VDC for 24VDC
models).
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 5 dBA to typical anechoic values shown in Table 1. Reverberant dBA is a minimum UL rating based on
sound power measurements in a reverberant test room.
Copyright 1993, 1994 Wheelock, Inc. All rights reserved.

Wheelock MT-12/24 Specifications