wheelock MT-24-WM INSTALLATION INSTRUCTIONS

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Long Branch, N.J. 07740 Thank you for using our products.

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INSTALLATION INSTRUCTIONS

MULTITONE STROBE APPLIANCES

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

GENERAL:

The Multitone Strobe Appliances are UL Listed under Standard 1638 for Fire Protective Service, private mode and UL Standard 464 for Audible Signal Appliances. They are Listed for indoor/outdoor use, wall or ceiling mount, with the backbox specified in these instructions (see Mounting Options). The Multitone Strobe Appliances use a Xenon flashtube with solid state circuitry enclosed in a rugged Lexan 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 Information). All inputs are polarized for compatibility with standard reverse polarity supervision of circuit wiring by a Fire Alarm Control Panel (FACP).

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. 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, SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.

SPECIFICATIONS:

Table 1: UL Ratings for Multitone Strobe Appliances

 

 

 

Rated Input Voltage

 

Rated Strobe Input Current

Rated Strobe 1

 

Model

 

 

(VDC)

 

 

(AMPS)

 

Candela Per

 

 

 

 

 

 

 

 

 

 

UL 1638 (cd)

 

 

Min

 

Nom

 

Max

Min

Nom

Max

 

 

MT-12-WH

----

 

12

 

----

----

.150

----

15.0cd

 

MT-24-WH

18

 

24

 

31

.075

.075

.078

15.0cd

 

MT-24-RH

18

 

24

 

31

.075

.075

.078

6.0cd

 

MT-24-WM

18

 

24

 

31

.088

.088

.096

117.0cd

 

 

 

 

 

 

 

 

 

 

 

1Strobe candela at -35o Centigrade is reduced to 7.5 candela for WH models, 78 candela for WM models and 3.0 candela for RH models.

The UL Listed "Rated Voltage" range is 18-31VDC for MT-24-WM/WH/RH and 12VDC for MT-12-WH using either filtered (DC) or unfiltered full-wave-rectified (FWR) voltage. 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 signaling device.

WARNING: ALTHOUGH UL TESTING HAS VERIFIED THAT THESE PRODUCTS FUNCTION EVEN AT 80% OF THEIR MINIMUM RATING AND 110% OF THEIR MAXIMUM RATING, WHEELOCK STRONGLY RECOMMENDS THAT THE VOLTAGE APPLIED TO THESE PRODUCTS BE WITHIN THEIR RATED VOLTAGE RANGE. THE APPLICATION OF IMPROPER VOLTAGE MAY RESULT IN DEGRADED OPERATION OR DAMAGE TO THESE PRODUCTS.

Copyright 1994, 1998, 1999 Wheelock, Inc. All rights reserved.

P82467-007 C

Sheet 1 of 9

Table 2: Current Ratings for Multitone Audible Appliances

 

 

 

Rated Average

Rated Average

 

Tone

Tone Description

Current (Amps)

Current (Amps)

 

 

 

24VDC

12VDC

 

 

 

HI dBA

STD dBA

HI dBA

STD dBA

 

Horn

Broadband Horn (Continuous)

0.040

0.023

0.100

0.020

 

Bell

1560 Hz Modulated (0.07 Sec. ON/Repeat)

0.014

0.012

0.031

0.010

 

March Time Horn

Horn (0.25 Sec. ON/0.25 Sec. OFF/Repeat)

0.040

0.023

0.100

0.020

 

Code-3 Horn

Horn (ANSI S3.41 Temporal Pattern)

0.040

0.023

0.100

0.020

 

Code-3 Tone

500 Hz (ANSI S3.41 Temporal Pattern)

0.028

0.017

0.060

0.015

 

Slow Whoop

500-1200 Hz Sweep (4.0 Sec. ON/0.5 Sec. OFF/Repeat)

0.048

0.026

0.100

0.025

 

Siren

600-1200 Hz Sweep (1.0 Sec. ON/Repeat)

0.036

0.023

0.082

0.020

 

HI/LO

1000/800 Hz (0.25 Sec. ON/Alternate)

0.020

0.014

0.044

0.012

 

 

 

 

 

 

 

Add 25% more input current than shown in Table 2 when operating the unit at maximum input voltage.

Add strobe current from Table 1 to audible appliance current from Table 2 to obtain total current for each unit, if the strobe and audible are wired to operate in unison on a single circuit.

Table 3: dBA Multitone With Strobe

Tone

Horn

Bell

March Time Horn

Code-3 Horn

Code-3 Tone

Slow Whoop

Siren

HI/LO

Anechoic

 

Reverberant

 

dBA @ 10'

 

dBA @ 10' Per UL 464

 

Nominal

Minimum

Maximum

Voltage

Voltage

Voltage

HI

STD

HI

STD

HI

 

STD

99

93

85

79

88

 

82

92

87

79

75

82

 

75

99

93

82

75

85

 

79

99

93

79

75

82

 

75

95

90

75

*70

79

 

*73

99

94

82

75

85

 

79

98

93

82

75

85

 

79

93

88

79

75

82

 

75

 

 

 

 

 

 

 

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 anechoic values shown in Table 3. Reverberant dBA is a minimum UL rating based on sound power measurements in a reverberant test room.

WARNING: MULTITONE STROBE MODELS SET ON "CODE-3 TONE" WITH STANDARD dBA DO NOT MEET THE 75 dBA MINIMUM UL REVERBERANT SOUND LEVEL REQUIRED FOR PUBLIC MODE FIRE PROTECTION SERVICE (NOTED BY * IN TABLE 3). MODELS WITH SETTINGS WHICH PRODUCE LESS THAN 75 dBA MAY NOT BE HEARD. THIS SETTING IS ACCEPTABLE ONLY FOR GENERAL SIGNALING (NON-FIRE ALARM) USE. USE THE "HIGH" dBA SETTING WITH THIS TONE OR USE A DIFFERENT TONE FOR PUBLIC MODE SERVICE.

P82467-007 C

Sheet 2 of 9

wheelock MT-24-WM INSTALLATION INSTRUCTIONS

Figure 1.

Table 4.

Models

 

 

 

Voltage

 

 

 

 

18

20

22

24

26

28

31

12

MT-24-WM/WH/RH DC/FWR

0.7

0.8

0.9

1.0

1.1

1.2

1.3

--

MT-12-WH DC/FWR

--

--

--

--

--

--

--

0.6

(For full-wave-rectified input voltage, multiply 1.41 by percent value shown in Figure 1.)

WARNING: MAKE SURE THAT THE TOTAL CURRENT REQUIRED BY ALL DEVICES THAT ARE CONNECTED TO THE SYSTEM'S PRIMARY AND SECONDARY POWER SOURCES AND SIGNALING CIRCUITS DOES NOT EXCEED THEIR RATED CURRENT. OVERLOADING THESE SOURCES COULD RESULT IN LOSS OF POWER AND FAILURE TO ALERT OCCUPANTS DURING AN EMERGENCY.

When calculating the total current: use Table 1 to determine the highest value of "Rated Strobe Average Current" for an individual strobe (across the expected operating voltage range of the strobe); then multiply this value by the total number of strobes; be sure to add the current for any other devices, including audible signaling devices, powered by the same source and include any required safety factors. Use Table 2 to calculate the total audible appliance current in the same manner.

WARNING: MAKE SURE THAT ALL FUSES USED ON SIGNALING CIRCUITS ARE RATED TO HANDLE THE MAXIMUM INRUSH OR PEAK CURRENT FROM ALL DEVICES ON THOSE CIRCUITS. FAILURE TO DO THIS MAY RESULT IN LOSS OF POWER TO THE SIGNALING CIRCUIT AND THE FAILURE OF ALL DEVICES ON THAT CIRCUIT TO OPERATE.

When calculating the maximum inrush: use Figure 1 to determine the highest value of "Rated Inrush Current" for an individual strobe (across the expected operating voltage range of the strobe); then multiply that value by the total number of strobes on the circuit; be sure to add the inrush currents from any other devices on that circuit and include any required safety factors. The time duration of the maximum strobe inrush current is shown in Figure 1. Calculate the maximum inrush current for all Multitone audible appliances in the same manner. The Multitone audible appliances produce a brief inrush current that lasts for just 2 microseconds but can reach a peak value of 8.0 Amps (11.2 Amps for FWR input).

 

 

 

Candela At Various Angles

 

Model

Rated

 

 

Per UL 1638

 

 

 

Candela

A1

A2

A3

A4

A5

A6/A7

MT-24-WH

15.0cd

15.0

18.8

13.7

15.6

7.4

0.9

MT-12-WH

15.0cd

15.0

16.8

14.4

14.6

6.9

0.6

MT-24-RH

6.0cd

6.0

7.5

5.5

6.2

3.0

0.37

MT-24-WM

117.0cd

117.0

15.2

16.4

6.0

7.0

1.2

 

 

 

 

 

 

 

 

CAUTION: Strobes are not designed to be used on coded systems in which the applied voltage is cycled on and off.

P82467-007 C

Sheet 3 of 9

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