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INSTALLATION AND MAINTENANCE INSTRUCTIONS
MA12/24D* Electronic Sounder,
SS12LO, SS24LO*, SS24M*
Electronic Strobe, MASS12LO,
MASS12M, MASS24LO*, MASS24M*
Sounder/Strobe Combined
*ULC models add suffix "A"; strobes and sounder/strobes available in 24VDC only
Table 1. SS12/24 electrical and light ratings:
Model
Supply
Voltage
(VDC)
SS12LO
12-17
SS24LOA
22.5-30
SS24MA
22.5-30
SS24LO
22.5-30
SS24M
22.5-30
General Description
The National Fire Protection Association has published standards
and recommended practices for the installation and use of the list-
ed appliances. It is recommended that the installer be familiar
with these requirements, with local codes, and any special
requirements of the authority having jurisdiction.
The electronic Multi-Alert™ sounder and the signaling strobe are
intended to be connected to the alarm indicating circuit of a listed
fire alarm control panel. Both are compatible with DC line super-
vision. The model MA12/24D is suitable for connection to either a
12 or 24 volt panel. Models SS24LO, SS24M, MASS24LO and
MASS24M require 24 volt panels; models SS12LO, MASS12LO and
MASS12M require 12 volt panels. Horn, strobe, or combination
strobe models may be used with panels that have full wave recti-
fied, unfiltered supplies. The MA12/24D sounder and MASS12/24
Table 2. Sound output and current ratings for the MA12/24D:
Sound (Hz)
( Note 4)
Slow Whoop
800 Continuous
800/1000 Alternating
2400 Interrupted
2400 Continuous
1200 Interrupted
Swept Frequency
Fast Warble
Note 1:
Total current for horn/strobe combinations = horn current +
strobe current; refer to tables 1 and 2.
Note 2:
Sound output measured in anechoic room at 10 feet.
Note 3:
Sound output measured in UL reverberant room.
Note 4:
See Figure 4 for tab clip removal & storage.
D900-05-00
Operating
Operating Current
Current from
from Rectified
Regulated Supply
Unfiltered Supply
(mA)
(mA, RMS)
50
180
25
75
Clips on Tabs
Current (mA) ( Note 1)
DC Regulated/
FWR Unfiltered
12V
ABC
21/40
BC
15/24
AC
17/32
AB
19/23
C
21/31
B
13/19
A
17/24
NONE
15/27
Peak
Minimum Output
Current
@ 100% Viewing
Angle (see Fig. 3)
(mA)
80
550
(.22@-35 o C)
(5.9 @-35 o C)
300
440
45
225
(.22@-35 o C)
125
450
(5.9 @-35 o C)
sounder/strobes are suitable for outdoor applications (–35°C to
66°C) when used with a Weatherproof Back Box (Model WBB) as
tested by UL. In Canada, rigid steel conduit must be used when
installing the Weatherproof Back Box. The light output of the
SS12LO, SS24LO, MASS12LO and MASS24LO is 1.5 cd min
@100% viewing angle. The light output of the SS24M, MASS12M,
and MASS24M is 15 cd min @100% viewing angle (See Figure 3).
There are eight different sounds which can be selected on the
electronic sounder by adding or removing tab clips (see Figure 4).
The sound selected will determine the maximum current and
sound power output per device. See Table 2 for these values.
Note: If class "A" wiring is installed, the wire length may be up to
4 times the single wire length in this calculation.
Output (dBA)
(Note 2)
(Note 3)
24V
30V
12V
38/56
46/72
85
28/45
35/55
87
34/46
43/58
85
35/56
43/64
89
38/59
46/73
85
23/33
27/41
85
34/47
43/60
85
30/47
38/59
85
Note 5:
All horn or combination strobe models can be powered using
full wave rectified unfiltered supplies.
Note 6:
Only continuous tones (800Hz, 2400 Hz) can be temporally
coded per UL. Strobes cannot be used on an MDL module pro-
viding temporal coding to Multi-Alert™ horns.
1
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
The Products to which this manual applies may
be covered by one or more of the following U.S.
Patent numbers: 5,546,293 and 5,488,462
Under no circumstances can
the SS24 or MASS24 input volt-
age exceed 33 VDC or be less
than 18 VDC. Under no cir-
(Candela)
cumstances can the SS12 or
1.5
MASS12 input voltage exceed
18.7 VDC or be less than 9.6
VDC. Under no circumstances
can the MA12/24D input volt-
1.5
age exceed 33 VDC or be less
than 9.6 VDC.
15
UL (dBA)
Ratings
Temp. Tone (Note 6)
24V
12V
24V
92
79
85
93
79
85
92
79
85
90
79
85
94
79
85
91
75
82
92
79
85
92
79
85
A Division of Pittway
www.systemsensor.com
UL (dBA)
w/MDL Module
12V
24V
N/A
N/A
75
79
N/A
N/A
N/A
N/A
75
79
N/A
N/A
N/A
N/A
N/A
N/A
I56-0496-018R
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Summary of Contents for Pittway SYSTEM SENSOR MA12D Series
- Page 1 INSTALLATION AND MAINTENANCE INSTRUCTIONS MA12/24D* Electronic Sounder, SS12LO, SS24LO*, SS24M* A Division of Pittway 3825 Ohio Avenue, St. Charles, Illinois 60174 Electronic Strobe, MASS12LO, 1-800-SENSOR2, FAX: 630-377-6495 www.systemsensor.com MASS12M, MASS24LO*, MASS24M* The Products to which this manual applies may Sounder/Strobe Combined be covered by one or more of the following U.S.
- Page 2 Figure 1. 12V strobe in-rush current: Figure 2. 24V strobe in-rush current: 1A/div 1A/div 200µS/div 200µS/div To calculate battery requirements, use current values shown on page 1. It This in-rush current, as can be seen in Figure 1 for the 12V strobe, typi- should be noted, however, that there is an in-rush current associated with cally peaks at 3A and drops to nominal in 600µS.
- Page 3 Figure 3: Light output vs. viewing angle: Figure 4: COVER SLOT TONE SELECTION TABS TAB A TAB B TAB C USE A SMALL- CLIP BLADED STORAGE SCREWDRIVER TO REMOVE CLIPS REMOVED OR CLIPS ADDED TO SELECT DESIRED TONE. FOR STORING UNUSED CLIPS: SLIDE COVER BACK TO ALIGN COVER SLOT WITH CLIP STORAGE POST.
- Page 4 Figure 11. Sounder/Strobe surface mount: Figure 10. Strobe surface mount: BB-STD MA12/24D Signal Strobe 1. Complete field wiring. (See Fig. 6) A78-1137-04 1. Screw strobe to sounder with screw B. A78-1137-15 2. Screw strobe to box with screw A. 2. Complete field wiring. (See Fig. 7 & 8) 3.
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