System Sensor SS24M and MA12_24D - Manual

D900-05-00 1 I56-0496-018R
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
INSTALLATION AND MAINTENANCE INSTRUCTIONS
A Division of Pittway
3825 Ohio Avenue, St. Charles, Illinois 60174
1-800-SENSOR2, FAX: 630-377-6495
www.systemsensor.com
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
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
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.
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.
Under no circumstances can
the SS24 or MASS24 input volt-
age exceed 33 VDC or be less
than 18 VDC. Under no cir-
cumstances can the SS12 or
MASS12 input voltage exceed
18.7 VDC or be less than 9.6
VDC. Under no circumstances
can the MA12/24D input volt-
age exceed 33 VDC or be less
than 9.6 VDC.
Table 2. Sound output and current ratings for the MA12/24D:
Model Supply Operating Operating Current Peak Minimum Output
Voltage Current from from Rectified Current @ 100% Viewing
Regulated Supply Unfiltered Supply Angle (see Fig. 3)
(VDC) (mA) (mA, RMS) (mA) (Candela)
SS12LO 12-17 50 80 550 1.5
SS24LOA 22.5-30 (.22@-35o C)
SS24MA 22.5-30 180 300 440 (5.9 @-35o C)
SS24LO 22.5-30 25 45 225 1.5
(.22@-35o C)
SS24M 22.5-30 75 125 450 15
(5.9 @-35o C)
Table 1. SS12/24 electrical and light ratings:
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.
Sound (Hz) Clips on Tabs Current (mA) ( Note 1) Output (dBA) UL (dBA) UL (dBA)
( Note 4) DC Regulated/ (Note 2) (Note 3) Ratings w/MDL Module
FWR Unfiltered Temp. Tone (Note 6)
12V 24V 30V 12V 24V 12V 24V 12V 24V
Slow Whoop ABC 21/40 38/56 46/72 85 92 79 85 N/A N/A
800 Continuous BC 15/24 28/45 35/55 87 93 79 85 75 79
800/1000 Alternating AC 17/32 34/46 43/58 85 92 79 85 N/A N/A
2400 Interrupted AB 19/23 35/56 43/64 89 90 79 85 N/A N/A
2400 Continuous C 21/31 38/59 46/73 85 94 79 85 75 79
1200 Interrupted B 13/19 23/33 27/41 85 91 75 82 N/A N/A
Swept Frequency A 17/24 34/47 43/60 85 92 79 85 N/A N/A
Fast Warble NONE 15/27 30/47 38/59 85 92 79 85 N/A N/A