Metasys SS12ADA Series Referenzhandbuch

Fire Initiating Devices and Notification Appliances Technical Manual 408

Notification Appliances Section

Technical Bulletin

Issue Date 1095

Code No. LIT-408275

Introduction Page 3

●

General Description 3

Installation Procedures 11

●

General Information 11

●

Mounting 11

●

Wiring Installation Guidelines 19

●

Limitations 21

SS12/24ADA Series Strobes and

MASS12/24ADA Series Sounder/Strobes

2 Notification Appliances—SS12/24ADA Series Strobes and MASS12/24ADA Series Sounder/Strobes

Notification Appliances—SS12/24ADA Series Strobes and MASS12/24ADA Series Sounder/Strobes 3

Introduction

This document contains important information about installing and

operating SS12/24ADA series strobes and MASS12/24ADA series

sounder/strobes. These strobes and sounder/strobes are manufactured by

System Sensor for use with Johnson Controls systems. The strobes are

UL 1971 Listed for signaling devices for the hearing impaired. The

strobes were tested by UL and those models that produce 75 candela (cd)

meet the Americans with Disabilities Act (ADA) requirements of 75 cd of

light output on axis.

These instructions apply to the SS12/24ADA series strobes and

MASS12/24ADA series sounder/strobes for mounting, wiring, and

installation. Follow only those instructions that apply to the model you

are installing. If you install this strobe for someone else to use, you must

leave a copy of this document with the user.

Before you install any SS12/24ADA series strobes and MASS12/24ADA

series sounder/strobes, read and be familiar with:

●applicable National Fire Protection Association (NFPA) standards,

local codes, and the requirements of the authority having jurisdiction.

●or, for non-United States installations, applicable codes and standards

specific to the country and locality of installation.

Failure to follow these directions may result in failure of the device to

report an alarm or trouble condition. Johnson Controls is not responsible

for devices that have been improperly installed, tested, or maintained by

others.

CAUTION: Equipment hazard. Do not use in potentially

explosive atmospheres. Do not leave unused

wires exposed.

The Multi-Alertsounder and signaling strobe are compatible with DC

line supervision and are intended to be connected to the alarm Notification

Appliance Circuit (NAC) of a UL Listed Fire Alarm Control Panel

(FACP). The strobes and sounder/strobes operate on full-wave rectified,

filtered, regulated DC voltages as well as unfiltered, unregulated DC for

power supplies UL Listed for fire alarm applications.

The strobes produce one flash per second (nominal) with continuous

nominal voltage applied.

General

Description

4 Notification Appliances—SS12/24ADA Series Strobes and MASS12/24ADA Series Sounder/Strobes

Note: The strobe cannot operate from coded power supplies, which

produce interrupted power. The strobe must have an uninterrupted

source of power in order to operate correctly.

4 in. s

dimen

TOP

MASS12/24ADA Series

3-3/4 in. 1-11/32 in.

5-3/32 in.

4 in. s

.2-3/4 in. 1/4 in.

TOP

3 in.

SS12/24ADA Series

Figure 1: Dimensions

Notification Appliances—SS12/24ADA Series Strobes and MASS12/24ADA Series Sounder/Strobes 5

Table 1: SS12/24ADA and MASS12/24ADA Series Specifications

Mechanical

Input Terminals 12 to 18 AWG (3.31 to 0.82 mm2)

Dimensions 4 in. (101 mm) square

Front of backbox to front of unit

Front of backbox to back of unit

SS12/24ADA MASS12/24ADA

2-3/4 in. (70 mm) 3-3/4 in. (95.3 mm)

1/4 in. (6.4 mm) 1-11/32 in. (34.1 mm)

Electrical

Supply Voltage Range 10.5-17 VDC or

20-30 VDC

Operating Temperature Range 32 to 120°F (0 to 49°C); 98% maximum RH

-31 to 151°F (-35 to 66°C) MA12/24D only*

Strobe Light Ratings

The signaling strobe is rated for 0 to 49°C, and is not suitable for outdoor use.

All strobes are UL 1971 Listed. Models with outputs of 75 candela (cd) are suitable for use

in locations requiring compliance with ADA requirements.

* The MA12/24D sounder is suitable for outdoor applications when used with a WBB

weatherproof backbox.

Model Rated Light Output

SS2415ADA,

SS1215ADA,

MASS2415ADA,

MASS1215ADA,

15 cd (Figure 1)

SS121575ADA, SS241575ADA,

SS2475ADA, MASS121575ADA,

MASS241575ADA, MASS2475ADA

75 cd (Figure 1)

SS24110ADA, MASS2475ADA 110 cd (Figure 1)

SS241575ADA, SS121575ADA

MASS241575ADA, MASS121575ADA 75 cd measured at 0°viewing angle

(Figure 1)

Design Strobe Flash Rate 1 Hz

Accessories Description

BB-D 4 in. x 4 in. x 2-3/4 in. Flush Mount Deep

Backbox

MP-F, Used with SSADA models

MPF2 (RED), MPF2B (Beige)

Used with the MASSADA models

6 in. x 6 in. x 1/4 in. Flush Mounting Plate

MP-SF 6 in. x 6 in. x 1/4 in. Semi-flush Mounting

Plate

6 Notification Appliances—SS12/24ADA Series Strobes and MASS12/24ADA Series Sounder/Strobes

UL 1971 requires a polar light distribution pattern to enhance the

likelihood of alerting hearing impaired individuals throughout an area.

Figure 2 illustrates the way the standard measures light intensity, both

horizontally and vertically.

Figure 2: Vertical and Horizontal Light Dispersion

Any one of the eight sounds can be selected on the electronic sounder by

removing or adding clips to the tone selection tabs. The sound selected

determines the sound power output and the maximum current per device

as shown in the table below.

Light Distribution

lightdis.drw

Wall Mount Horizontal Light Distribution

Wall

-90

-45

Zero Axis

Wall

Floor

85 80 75 70

65 60

55 50

45 40 35 30

Wall Mount Vertical Light Distribution

rees

Percent

of Rated

ht Output

100

5-30

rees

Percent

of Rated

ht Output

100

5-25

30-45

Sound Output

Notification Appliances—SS12/24ADA Series Strobes and MASS12/24ADA Series Sounder/Strobes 7

Table 2: Sound Output and Current Ratings for the MA12/24D

Sound (Hz)

Tone Description Clips on

Tabs Current (mA) Output (dBA)

in Anechoic

Chamber*

Output (dBA)

in UL

Reverberant

Room**

12V 24V 30V 12V 24V 12V 24V

Slow Whoop

800-1200 Hz Sweep in 5.0 sec/

Repeat

ABC 17 40 54 85 92 79 85

800 Hz Continuous BC 16 37 48 87 93 79 85

800/1000 Hz Alternating

800 Hz in 0.25 sec/1000 Hz in

0.25 sec/Repeat

AC 17 37 48 85 92 79 85

2400 Hz Interrupted

0.25 sec ON/0.25 sec OFF/Repeat AB 25 54 67 89 90 79 85

2400 Hz Continuous C 25556985948288

1200 Hz Interrupted

0.5 sec On/0.25 sec OFF/Repeat B 14324185917582

Swept Frequency

1200-600 Hz Sweep in 1.0 sec/

Repeat

A 16385185927985

Fast Warble

600-1200 Hz Sweep in 0.125 sec/

Repeat

none 16 37 49 85 92 79 85

* Anechoic dBA is measured on-axis in a non-reflective (free field) test room using fast meter response.

** Reverberant dBA is a minimum UL rating based on sound power measurements in a reverberant test room.

Note: The 1200 Hz interrupted tone may be used for private or public

mode in the fire alarm service when used with a 24 volt power

supply. It may be used only in the private mode when used with a

12 volt power supply.

All models can be powered using full-wave rectified, unfiltered

(unregulated) power supplies. However, if the power supply is

unregulated, the notification appliance must be compatibility listed for use

with the fire alarm system. In addition, follow the guidelines listed below:

●Under no circumstances can SS24ADA or MASS24ADA series

devices input voltage exceed 33 VDC or be less than 16 VDC peak

when using a regulated power supply. When using an unregulated

power supply, the range is 16-33 VRMS.

●Under no circumstances can the MA12/24D input voltage exceed

33 VDC or be less than 9.6 VDC.

●Under no circumstances can a SS12ADA or MASS12ADA series

device input voltage exceed 18.7 VDC or be less than 8.5 VDC for a

regulated power supply. When using an unregulated power supply,

the range is 8.5-18.7 VRMS.

8 Notification Appliances—SS12/24ADA Series Strobes and MASS12/24ADA Series Sounder/Strobes

For tab clip removal and storage (Figure 3):

●Use a small bladed screwdriver to remove the clips.

●Slide the cover back to align the cover slot with the clip storage post

to store unused clips.

Remove or add clips

to select desired tone.

soundrex

Cover

Slot

Tone

Selection Tabs

Clip

Stora

Use a small

screwdriver

to remove clips.

Figure 3: Tab Clip Removal and Storage

There may be applications where it is desirable to drive the sounder and

strobe as independent devices. The MASS12/24ADA series

sounder/strobes are easily configured for this capability. The diagram of

the terminal connection for this application is shown in Figure 13.

Independent strobe operation in an audibly-coded system requires a

separate uncoded power supply for the strobe.

Selecting Desired

Tone

Notification Appliances—SS12/24ADA Series Strobes and MASS12/24ADA Series Sounder/Strobes 9

Table 3: Operating Current from Regulated Supply

Model Number* Supply

Voltage

Range

Average

Operating

Current

(mA)

Peak Current

(mA)

20/30 VDC

Peak Current

(mA)

10.5/17 VDC

Inrush

Current

(mA in

Excess of

Peak)

SS24110ADA 20-30 VDC 210 470/500 – 0

SS2475ADA 20-30 VDC 170 385/400 – 0

SS2415ADA 20-30 VDC 75 160/180 – 0

SS1215ADA 10.5-17 VDC 170 – 360/380 0

SS241575ADA 20-30 VDC 93 210/220 – 0

SS121575ADA 10.5-17 VDC 225 – 510/560 0

* Units are available in either red or beige finish. To order red, use the model numbers listed in the table.

Add “B” suffix to end for beige.

Table 4: Operating Current from Full-Wave Rectified Unfiltered Supply

Model Number* Supply

Voltage

Range

Average

Operating

Current

(mA RMS)

Peak Current

(mA)

20/30 VDC

Peak Current

(mA)

10.5/17 VDC

Inrush

Current**

(Amperes

in Excess

of Peak)

SS24110ADA 20-30 VDC 245 400/500 – 0.080

SS2475ADA 20-30 VDC 200 320/370 – 0.040

SS2415ADA 20-30 VDC 90 275/290 – 0.020

SS1215ADA 10.5-17 VDC 200 – 330/380 0.020

SS241575ADA 20-30 VDC 120 275/290 – 1.00

SS121575ADA 10.5-17 VDC 270 – 500/530 0.030

* Units are available in either red or beige finish. To order red, use the model numbers listed in the

table. Add “B” suffix to end for beige.

** Inrush current duration is less than 20 microseconds (0.00002 seconds).

Note: Inrush current refers to current that exceeds the nominal voltage

when the strobe is first turned on. Once the strobe is turned on, it

flashes one flash per second. Peak current indicates the current

rising above the nominal voltage right after each strobe flash.

10 Notification Appliances—SS12/24ADA Series Strobes and MASS12/24ADA Series Sounder/Strobes

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