Metasys SS24ADAS Series User manual

Fire Initiating Devices and Notification Appliances Technical Manual 408
Notification Appliances Section
Technical Bulletin
Issue Date 1095
© 1995 Johnson Controls, Inc. 1
Code No. LIT-408280
Introduction Page 3
● General Description 3
Installation Procedures 9
● General Information 9
● Mounting 9
● Wiring Installation Guidelines 17
● Limitations 19
SS24ADAS and MASS24ADAS Series Synchronized (Sync)
Strobes and Sync Strobe/Sounders

2 Notification Appliances—SS24ADAS and MASS24ADAS Series Synchronized (Sync)

Notification Appliances— SS24ADAS and MASS24ADAS Series Synchronized (Sync) 3
Introduction
This document contains important information about installing and
operating SS24ADAS series synchronized (sync) strobes and
MASS24ADAS series sounder/synchronized (sync) strobes. These sync
strobes and sounder/sync strobes are manufactured by System Sensor for
use with Johnson Controls systems. The strobes are UL 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 SS24ADAS series sync strobes and
MASS24ADAS series sounder/sync strobes for mounting, wiring, and
installation. Follow only those instructions that apply to the model you
are installing. If you install this sync strobe for someone else to use, you
must leave a copy of this document with the user.
Before you install any SS24ADAS series sync strobes and
MASS24ADAS series sounder/sync 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.
The Multi-Alertsounder and signaling sync strobe are compatible with
DC line supervision and are intended to be connected to the alarm
Notification Appliance Circuit of a UL Listed Fire Alarm Control Panel
(FACP). The sounders and 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 sync strobes produce one flash per second (nominal) with continuous
nominal voltage applied.
!
CAUTION: Equipment hazard. Do not use in potentially
explosive atmospheres. Do not leave unused
wires exposed.
General
Description

4 Notification Appliances—SS24ADAS and MASS24ADAS Series Synchronized (Sync)
Note: The sync strobe cannot operate from coded power supplies, which
produce interrupted power. The sync strobe must have an
uninterrupted source of power in order to operate correctly.
4 in. s
q
.2-3/4 in. 1/4 in.
TOP
3 in.
SS24ADAS Series
4 in. s
q
.
dimen
TOP
MASS24ADAS Series
3-3/4 in. 1-11/32 in.
5-3/32 in.
Figure 1: Dimensions
Table 1: SS24ADAS and MASS24ADAS 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
SS24ADAS MASS24ADAS
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 20-30 VDC
Operating Temperature Range 32 to 120°F (0 to 49°C); 98% maximum RH
Sync Strobe Light Ratings
The signaling sync strobe is rated for 0 to 49°C, and is not suitable for outdoor use.
All sync strobes are UL 1971 Listed. Models with outputs of 75 candela (cd) are suitable for
use in locations requiring compliance with ADA requirements.
Model Rated Light Output
SS2415ADAS
MASS2415ADAS 15 cd (Figure 1)
SS241575ADAS
MASS241575ADAS 75 cd measured at 0°viewing angle (Figure 1)
Design Sync Strobe Flash Rate 1 Hz

Notification Appliances— SS24ADAS and MASS24ADAS Series Synchronized (Sync) 5
Table 2: Accessories
Accessories Description
BB-D 4 in. x 4 in. x 2-3/4 in. Flush Mount Deep
Backbox
MP-F 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
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 Table 3.
Light Distribution
lightdis.drw
Wall Mount Horizontal Light Distribution
Wall
Li
g
ht
90
45
0
-90
-45
Zero Axis
Wall
Floor
0
5
10
15
20
25
90 85 80 75 70 65 60 55 50 45 40 35 30
Wall Mount Vertical Light Distribution
De
g
rees
Percent
of Rated
Li
g
ht Output
100
90
65
48
34
27
22
18
16
15
13
12
12
12
0
5-30
35
40
45
50
55
60
65
70
75
80
85
90
De
g
rees
Percent
of Rated
Li
g
ht Output
100
90
75
55
45
40
35
35
30
30
25
25
0
5-25
30-45
50
55
60
65
70
75
80
85
90
Sound Output

6 Notification Appliances—SS24ADAS and MASS24ADAS Series Synchronized (Sync)
Table 3: 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 C25556985948288
1200 Hz Interrupted
0.5 sec On/0.25 sec OFF/Repeat B14324185917582
Swept Frequency
1200-600 Hz Sweep in 1.0 sec/
Repeat
A16385185927985
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 SS24ADAS or MASS24ADAS 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 SS12ADAS or MASS12ADAS series
device input voltage exceed 18.7 VDC or be less than 8.5 VDC peak
when using a regulated power supply. When using an unregulated
power supply, the range is 8.5-18.7 VRMS.

Notification Appliances— SS24ADAS and MASS24ADAS Series Synchronized (Sync) 7
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
A BC
Tone
Selection Tabs
Clip
Stora
g
e
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
sync strobe as independent devices. The MASS24ADAS series
sounder/sync strobes are easily configured for this capability.
The diagram of the terminal connection for this application is shown in
Figure 13.
Independent sync strobe operation in an audibly-coded system requires a
separate uncoded power supply for the sync strobe.
Selecting Desired
Tone

8 Notification Appliances—SS24ADAS and MASS24ADAS Series Synchronized (Sync)
Table 4: Operating Current from Regulated Power Supply
Model Number Supply
Voltage
Range
Average
Operating
Current
(mA)
Peak Current
(mA) Inrush Current
(Amperes)
20/30 VRMS*
SS2415ADA 20-30 VDC 135 300 5.0/7.0
SS241575ADA 20-30 VDC 220 480 5.0/7.0
* Inrush current duration is less than 20 microseconds (0.00002 seconds).
Table 5: Operating Current from Full-Wave Rectified Unfiltered Supply
Model Number Supply
Voltage
Range
Average
Operating
Current (mA
RMS)
Peak Current
(mA) Inrush Current
(Amperes)
20/30 VRMS*
SS2415ADA 20-30 VDC 150 330 5.0/7.0
SS241575ADA 20-30 VDC 480 500 5.0/7.0
* 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.

Notification Appliances— SS24ADAS and MASS24ADAS Series Synchronized (Sync) 9
Installation Procedures
This section contains installation information for SS24ADAS series sync
strobes and MASS24ADAS series sounder/sync strobes. Mounting
instructions and wiring information are provided.
Installation procedures must conform to all applicable codes and the
requirements of the authority having jurisdiction.
For sync strobe placement, read and be familiar with:
●NFPA 72-National Fire Alarm Code, Chapter 6 (1993)
Both slotted-head and Phillips-head screws are supplied with the
speaker/strobe.
●Use the slotted-head screws to mount the device or combination of
devices on the electrical box.
●Use the Phillips-head screws in the two remaining holes when only a
speaker is being installed.
Note: The rated output of the sounder is specified at ten feet. It cannot be
assumed that the output will meet the NFPA standard of 15 dB
over ambient noise at all locations within a room. Additional
sounders may be needed to ensure that the sound output level
complies with NFPA requirements.
Sync strobe and sounder/sync strobe combination are designed for wall
mounting only.
●The sounder is 1-1/4 inches deep.
●Backboxes must be 4 inches square by at least 1-1/2 inches deep.
●2-1/8 inches deep backbox is recommended.
All sync strobes must be mounted where the top of the lens is 24 inches
below ceilings or as required by the authority having jurisdiction.
For mounting the sounder/sync strobe, note the following figures:
●Surface Mount (Figure 6)
●Semi-flush Mount (Figures 7 and 10)
General
Information
Sync Strobe
Placement
Mounting
General
Sounder/Sync
Strobe
Combination
Mounting

10 Notification Appliances—SS24ADAS and MASS24ADAS Series Synchronized (Sync)
For mounting the sounder, note the following figures:
●Surface Mount (Figure 4)
●Semi-flush Mount (Figures 7 and 10)
●Flush Mount (Figure 9)
Flush mounting requires the use of the deep backbox (Part No. BB-D) or
4 inches square by 2-3/4 inches deep backbox.
1. Determine which of the two device holes will be used to attach the
device to the box.
2. Mount the flush plate to the sounder using the other two holes with
two 1-inch Phillips-head screws and two square nuts.
For mounting the sounder/sync strobe, note the following figures:
●Surface Mount (Figure 5)
●Semi-flush Mount (Figure 8)
Table 6: Screw Types for Figures
Letter Screw Type
A8-32 x 1-7/16 Slot
BNo. 8 Sheet Metal Phillips-head
C8-32 x 1 Phillips-head
DNo. 8 Square Nut
E8-32 x 5/8 Slot
F8-32 x 2-3/4 Slot
G6-32 x 5/8 Slot
Sounder
Mounting
Sync Strobe
Mounting
Mounting Figures

Notification Appliances— SS24ADAS and MASS24ADAS Series Synchronized (Sync) 11
Standard
4 inch S
q
uare
x 2-1/8 inch
Backbox
MA-12/24D
surmount
A
B
B
A
Figure 4: Sounder Surface Mount
1. Complete the field wiring as described in the Wiring Installation
Guidelines section of this technical bulletin (Figure 11).
2. Screw the sounder to the box with Type A screws.
3. Fill the remaining holes with Type B screws.
TOP
Standard
4 inch S
q
uare
x 2-1/8 inch
Backbox
fi
g
5
A
B
A
B
S
y
nc Si
g
nal Strobe
Figure 5: Sync Strobe Surface Mount
1. Complete the field wiring as described in the Wiring Installation
Guidelines section of this technical bulletin (Figure 13).
2. Screw the sync strobe to the box with Type A screws.
3. Fill the remaining holes with Type B screws.

12 Notification Appliances—SS24ADAS and MASS24ADAS Series Synchronized (Sync)
Figure 6: Sounder/Sync Strobe Surface Mount
1. Complete the field wiring as described in the Wiring Installation
Guidelines section of this technical bulletin (Figures 12 and 14).
2. Screw the sounder/sync strobe to the box with Type A screws.
3. Fill the remaining holes with Type B screws.
Standard
4 inch S
q
uare
x 2-1/8 inch
Backbox
fig6
A
B
A
B
D
S
y
nc Si
g
nal Strobe/Sounder
TOP

Notification Appliances— SS24ADAS and MASS24ADAS Series Synchronized (Sync) 13
Figure 7: Sounder or Sounder/Sync Strobe Semi-Flush Mount
1. Add Type D nuts to the plate.
2. Screw the plate to the box with Type E screws.
3. Complete the field wiring as described in the Wiring Installation
Guidelines section of this technical bulletin (Figures 11-14).
4. Screw the sounder or sounder/sync strobe to the plate with Type A
screws.
5. Fill the remaining holes with Type B screws.
A
B
A
B
Standard
4 inch S
q
uare
x 2-1/8 inch
Backbox
S
y
nc Si
g
nal Strobe/Sounder
fi
g
7
MP-SF
B
B
E
E
D
D

14 Notification Appliances—SS24ADAS and MASS24ADAS Series Synchronized (Sync)
Figure 8: Sync Strobe Semi-Flush Mount
1. Add Type D nuts to the plate.
2. Screw the sync strobe to the plate with Type C screws.
3. Complete the field wiring as described in the Wiring Installation
Guidelines section of this technical bulletin (Figure 13).
4. Screw the sync strobe-plate to the box with Type A screws.
D
D
A
TOP
A
Standard
4 inch S
q
uare
x 2-1/8 inch
Backbox
S
y
nc Si
g
nal Strobe
fig8
MP-SF
C
C

Notification Appliances— SS24ADAS and MASS24ADAS Series Synchronized (Sync) 15
Figure 9: Sounder Flush Mount (Deep Box Required)
1. Add Type D nuts to the plate.
2. Complete the field wiring as described in the Wiring Installation
Guidelines section of this technical bulletin (Figure 11).
3. Screw the plate-sounder to the box with Type F screws.
BB-D
4 inch S
q
uare
x 2-3/4 inch
DeepBackbox
MA-12/24D
surmon12
MP-F
D
F
C
F
C

16 Notification Appliances—SS24ADAS and MASS24ADAS Series Synchronized (Sync)
Figure 10: Sounder or Sounder/Sync Strobe Semi-Flush Mount
with Plaster Ring
1. The plaster ring should be properly mounted to the electrical box with
the screws supplied in the box.
2. Add Type D nuts to the plate.
3. Screw the plate to the plaster ring with Type G screws.
4. Complete the field wiring as described in the Wiring Installation
Guidelines section of this technical bulletin (Figures 11-14).
5. Screw the sounder/sync strobe to the plate with Type A screws.
6. To mount the sounder, fill the remaining holes with Type B screws.
7. To add the sync strobe to the sounder, add two Type D nuts to the
sounder, and replace Type B screws with Type C screws.
Standard
4 inch S
q
uare
x 2-1/8 inch
Backbox
fig10
MP-SF
B
A
A
G
G
GPlaster
Rin
g
D
D
G
AC
B
A
B
TOP
S
y
nc Si
g
nal Strobe/Sounder

Notification Appliances— SS24ADAS and MASS24ADAS Series Synchronized (Sync) 17
Note: Do not loop the Notification Appliance Circuit (NAC) wires under
the terminal screw. Wires connecting the device to the panel must
be broken at the device terminal connection in order to maintain
electrical supervision.
(
-
)
In/Out
Strobe
Onl
y
(
-
)
In/Out
(
+
)
In/Out
Strobe
Onl
y
(
+
)
In/Out
To Next
Device
or
End-of-Line
(
EOL
)
-
VDC
+
VDC
From Panel
or Previous
Device
highint1
Figure 11: Wiring the Multi-Alert Sounder
To Next
Device
or
End-of-Line
(
EOL
)
- VDC
+ VDC
From Panel
or Previous
Device
highin9
Note: Use uncoded suppl
y
onl
y
.
(
-
)
In/Out
Strobe
Onl
y
(
-
)
In/Out
(
+
)
In/Out
Strobe
Onl
y
(
+
)
In/Out
Figure 12: Wiring the Multi-Alert Sounder and Sync Strobe
Operating in Tandem
Wiring
Installation
Guidelines
Wiring Diagrams

18 Notification Appliances—SS24ADAS and MASS24ADAS Series Synchronized (Sync)
From Uncoded DC Power Suppl
y
.....
To Next Device
In
Out
In
Out
From Uncoded DC Power Suppl
y
.....
To Next Device
highin12
Floor Down
Ceilin
g
Up
Figure 13: Wiring the Sync Strobe
Figure 14: Wiring the Multi-Alert Sounder and Sync Strobe
Operating Independently
To Next
Device
or
End-of-Line
(
EOL
)
-
VDC
Strobe
+ VDC
-
VDC
Sounder
+
VDC
From Panel
or Previous
Device
hi
g
hin10
Noncoded.....
Suppl
y
.....
Can be.....
Coded.....
Suppl
y
.....
CAUTION: Break off the Printed Circuit Board
(
PCB
)
tabs.
(
-
)
In/Out
Strobe
Onl
y
(
-
)
In/Out
(
+
)
In/Out
Strobe
Onl
y
(
+
)
In/Out
!

Notification Appliances— SS24ADAS and MASS24ADAS Series Synchronized (Sync) 19
These sync strobes and sounder/sync strobes are designed for installation
in accordance with NFPA-Standards-72-National Fire Alarm Code or
equivalent codes and standards applicable to the country of installation.
Test your alarm system per the applicable codes and standards specific to
the location and use of your facility.
●The sounder and/or sync strobe will not work without power. The
sounder/sync strobe gets its power from the fire/security panel
monitoring the alarm system. If power is cut off for any reason, the
sounder/sync strobe will not provide the desired audio or visual
warning.
●The sounder may not be heard. The loudness of the sounder meets or
exceeds current Underwriters Laboratories standards. However, the
sounder may not alert a sound sleeper, one who has recently used
drugs, or one who has been drinking alcoholic beverages. The
sounder may not be heard if it is placed on a different floor from the
person in hazard, or if it is placed too far away to be heard over
ambient noise such as traffic, air conditioners, machinery, or music
appliances that may prevent alert persons from hearing the alarm.
The sounder may not be heard by persons who are hearing impaired.
●The signal sync strobe may not be seen. The electronic visual
warning signal that flashes at least once every three seconds meets or
exceeds current Underwriters Laboratories Standard 1971, and uses an
extremely reliable xenon flashtube. The visual warning signal is
suitable for direct viewing and must be installed within an area where
it can be seen by building occupants. The sync strobe must not be
installed in direct sunlight or in areas of high light intensity
(over 60 foot candles) where the visual flash might be disregarded or
not seen. The sync strobe may not be seen by the visually impaired.
●The signal sync strobe may cause seizures. Individuals who have a
positive photic response to visual stimuli with seizures, such as
epileptics, should avoid prolonged exposure to environments in which
sync strobe signals, including this sync strobe, are activated.
●Johnson Controls recommends that the sounder and signal sync strobe
be used in combination to minimize risk.
●The signal sync strobe cannot operate from coded power supplies.
Coded power supplies produce interrupted power. The sync strobe
must have an uninterrupted source of DC power in order to operate
correctly.
Limitations

20 Notification Appliances—SS24ADAS and MASS24ADAS Series Synchronized (Sync)
Notes
Controls Group FAN 408
507 E. Michigan Street Fire Initiating Devices and Notification Appliances Technical Manual
P.O. Box 423 Printed in U.S.A.
Milwaukee, WI 53201