Siemens Building Technologies, Inc. Siemens Building Technologies, Ltd.
8 Fernwood Road 2 Kenview Boulevard
Florham Park, New Jersey 07932 Brampton, Ontario L6T 5E4 Canada
P/N 315-099082-9
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Table of Contents
PREFACE ................................................................................................................................ ii
Along with the use of this Owner’s Manual, the appropriate following standards and the manufacturers’
instructions for initiating and signaling devices should be used to install and maintain a functioning Fire
Alarm Signaling System.
NFPA 70 National Electrical Code
NFPA 72 National Fire Alarm Code
NFPA 101 Life Safety Code
Other Standards - Contact the authority having jurisdiction for other standards that may apply.
For Publications, contact:
National Fire Protection Association
Batterymarch Park
Quincy, MA 02269
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1. DESCRIPTIONS
The Model PAD-3 from Siemens Building Technologies, Inc. is a notification and auxiliary power
expander that provides up to 6 amps of 24 volt DC for powering notification appliances and auxiliary
devices. The PAD-3 provides its own AC power connection, battery charging circuit, and battery
connections. Used with a fire alarm control unit, this enables you to connect and distribute power to many
more devices than your control unit may normally allow.
1.1 GENERAL DESIGN FEATURES
Inputs
The PAD-3 has two optically isolated inputs that provide the connection from the fire alarm control unit
notification appliance circuit to the PAD-3. The inputs also provide a connection for returning a trouble
condition to the control unit notification appliance circuit.
The fire alarm control unit supervises its notification appliance circuit used for communicating with the
PAD-3 the same way it supervises ordinary NACs. The inputs on the PAD-3 monitor the polarity of the
voltage coming from the fire alarm control unit’s NACs to determine when to operate the notification
appliance circuit outputs. The PAD-3 emulates the trouble behavior of a NAC by opening the EOL
supervision current for trouble conditions. Note that the PAD-3 will sense the polarity of the fire alarm
control unit’s NACs to drive the outputs whether or not the supervision connection is intact.
The following situations will open the EOL supervision at the inputs indicating a trouble condition:
• No or Low AC power.
• No and Low battery condition.
• Ground fault to the output wiring.
• Auxiliary Power Supply output over-current condition.
• NAC output open, shorted or over-current condition on outputs associated with its input.
Notes:
If input 1 controls all four outputs, a fault on any output will cause input 1 to indicate trouble. The fault
does not affect input 2.
If input 1 controls outputs 1 and 2, and input 2 controls outputs 3 and 4, a fault condition on output 3 or 4
will cause input 2 to indicate trouble. The fault does not affect input 1.
Once the PAD-3’s inputs and outputs are activated, the fire alarm control unit will not be able to sense
trouble conditions through its notification appliance circuit connected to the PAD-3 input circuits. Use the
PAD-3 trouble relay when it is necessary to monitor trouble conditions and active alarm conditions at the
same time.
Notification Appliance Circuit Outputs
The PAD-3 has four dedicated, power-limited, NAC outputs that can be configured as two Style Z (Class
A) or four Style Y (Class B) circuits.
The PAD-3 provides three configuration options that will drive outputs as slaves that will follow the input
or if the inputs are on constant as ANSI temporal code or Sync strobe/horn operation.
Each of the four outputs is rated at 3 amps, though a total of 6 amps maximum can be drawn from the
PAD-3 outputs. The yellow Output LEDs (DS1-DS4) will indicate an open, shorted or over-current
condition on its associated NAC Output.
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Selection of which input controls which output, and which inputs are Style Z (Class A) and Style Y (Class
B) is done using the 10 position DIP switch on the printed circuit board. Refer to Section 5 for DIP switch
settings.
Auxiliary Power Output
The PAD-3 has a dedicated, power limited, auxiliary output that can be configured in two different ways.
The auxiliary output can either be non-resettable (always on), or configured to switch off when the AC
power goes off to conserve the battery standby power. When the auxiliary power is configured to switch
off, there is a 30-second delay before the auxiliary power is turned off after the AC power goes off. The
auxiliary power is for supplementary purposes only if it is configured to switch off when AC is lost.
The Auxiliary Power Output is rated at 3 amps. Only a total of 6 amps maximum can be drawn from the
PAD-3 outputs. The yellow Aux PS LED (DS5) will indicate an over-current condition on the output.
NOTE: The Auxiliary Power Output may be limited to 1.5 amps in certain circumstances. Please see
Section 6.2, Battery Size Calculation for more details.
Common Trouble Relay
The PAD-3 includes a form C trouble relay that will de-energize for the following trouble conditions:
•No or Low AC power (With selectable delay between 60-180 minutes. Refer to Section 5.1.4 for delay
time settings).
• No and Low battery condition.
• Ground fault to the output wiring.
• Auxiliary Power Supply output over-current condition.
• NAC output open, shorted and over-current condition.
AC Fail Relay
A normally energized relay will be de-energized after no or low AC power without delay. A Form “A”
contact provides a local signaling (audible and visual) of an AC fail at the protected premises.
Battery Charging and Supervision
The PAD-3 provides a battery charging circuit for charging sealed lead-acid batteries. The unit also
supervises for no and low battery conditions.
Ground Fault Detection
The PAD-3 monitors for ground faults to the output wiring. When detected, the unit lights the yellow
GRND LED (DS6) and de-energizes the trouble relay and the input supervision relays.
Environmental
All hardware is suitable for use in an interior or protected location.
Power Limiting
The AC power and battery wiring are not power limited. All other circuits leaving the control unit are power
limited, provided the proper installation rules are maintained.
Transient Protection
Transient protection devices are provided where needed to meet the requirements of UL864.
1.2 REGULATORY STANDARDS
The PAD-3 meets the requirements of industry and government regulatory agencies as noted.
Federal Communications Commission
The PAD-3 meets the class A requirements of the Code of Federal Regulations (CFR 47), Part 15,
subpart J, for electromagnetic field emissions.
Underwriters Laboratories
The PAD-3 control unit is listed under UL Standard 864 for compliance to NFPA Standard 72 for fire
service.
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1.3 GENERAL SPECIFICATIONS
Operating specifications for the PAD-3 are as follows:
Environmental
• Operating temperature
32 - 120°F (0 - 49°C)
• Relative humidity
Up to 93%RH @ 90°F (32°C) non-condensing
Note: The auxiliary power is for supplementary purposes only if it is configured to switch off
when AC is lost.
Common Trouble Relay
• Contact Rating:
2.5A, 30 VDC/VAC maximum, resistive
•Form “C” Contact
AC Fail Relay
• Contact Rating:
2.5A, 30 VDC/VAC maximum, resistive
•Form “A” Contact
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2. INSTALLATION
CAUTION:
It is recommended that the printed circuit boards be removed for any procedure that may
cause dust, metal shavings, grease or any such matter that may affect the circuit boards
and/or parts.
There may be several sources of power into the control unit. Each source must be
disconnected prior to installing or connecting or disconnecting wiring.
Each output circuit is rated at 3 amps. DO NOT OVERLOAD. Overloading a circuit will
cause it to shut down (power limit).
2.1 MOUNTING THE ENCLOSURE
(For indoor use only in dry environments)
The fire alarm control unit must be mounted in a properly accessible location as required by applicable
codes. Any auxiliary battery box or other accessory not connected through a protective device or a circuit
designed for remote connection must be within the same room and connected through electrical conduit.
Installation is to be done only by qualified personnel who have thoroughly read and understood these
instructions.
When mounting the enclosure on interior walls, use appropriate screw anchors in plaster. When mounting
on concrete, especially when moisture is expected, first attach a piece of ¾-inch plywood to the concrete
surface. Attach the PAD-3 enclosure to the plywood.
Consult the installation instructions included with the enclosure for proper mounting.
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2.2 CONTROL UNIT MOUNTING
To install the main board, install 3 screws loosely into the bottom mounting holes or mounting rails. Slide
the bottom of the board behind the screws, aligning the screws with the slots in the board. Install a screw
in the center position at the top of the board, and two male standoffs in the top left and top right corners of
the main board. Tighten all fasteners. Next, install the insulator to the standoffs using the two remaining
screws. All mounting hardware is included with the PAD-3 main board. See Figure 2-1 below for details.
Figure 2-1. Mounting the PAD-3-MB
Before installing the PAD-3, the input must first be wired into the building’s main electrical power through
the TB1 terminals. See Figure 2-2 on page 8. Shut off the electrical power to the PAD-3, and then
complete the general installation of the PAD-3 using the information in this section.
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2.3 WIRE ROUTING
Notes:
All high voltage and non-power limited wiring must be kept separate from power limited
wiring. A ¼” separation must be maintained, with high voltage and non-power limited
wiring running in separate conduit openings from power wiring.
To avoid induced noise (transfer of electrical energy from one wire to another), keep
input wiring isolated from high current output and power-limited wiring. Improper wiring
installation may cause improper operation. Avoid pulling one multi-conductor cable for
the entire system. Instead, separate high current input/output from low current.
Wiring within the cabinet should be routed around the perimeter of the cabinet. It should
not cross the printed circuit board where it could induce noise into the sensitive
microelectronics or pick up unwanted RF noise from the switching power supply circuit.
A. Non-power Limited - High Voltage (AC power) or B
B. Non-power Limited - High Voltage (AC power) or A
C. Non-power limited – (Battery wiring, if separate enclosure required)
D. Power limited (or E)
E. Power limited (or D)
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2.4 TERMINAL DESCRIPTIONS AND ELECTRICAL
RATINGS
Table 2-1. Terminal Descriptions
Terminal # Description Ratings
TB1
1 Earth Ground
2 AC (white-"neutral") 120 VAC 50/60 Hz, 2.5A max.
3 AC (black - "live”)
TB2
1 Input 1 (+)
2 Input 1 (-) 16 – 33 VDC/VFW, 7mA max.
3 Input 1
4 Input 2 (+)
5 Input 2 (-) 16 - 33 VDC/VFW, 7mA max.
6 Input 2
7 Normally Open contact 2.5 A @ 30 VDC/VAC,
8 Common resistive
9 Normally Open contact
10 Common 2.5 A @ 30 VDC/VAC,
11 Normally Closed contact resistive
12 NAC 1 Output (+) Special Application
13 NAC 1 Output (-) 16-32 VDC, 3A max
14 NAC 2 Output (+) Special Application
15 NAC 2 Output (-) 16-32 VDC, 3A max
16 NAC 3 Output (+) Special Application
17 NAC 3 Output (-) 16-32 VDC, 3A max
18 NAC 4 Output (+) Special Application
19 NAC 4 Output (-) 16-32 VDC, 3A max
20 Auxiliary Power Output (+) Special Application
21 Auxiliary Power Output (-) 18-28 VDC, 3A max (Refer to
Section 1.3 General
Specifications)
Even though
each output is
rated for 3 amps,
the total
current draw
from the 4 NAC
outputs and the
auxiliary power
output must not
exceed 6 amps.
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2.5 WIRING THE PAD-3
Figure 2-2 shows the general layout of the PAD-3 PC board. This section also provides specific wiring
details for accessories. Consult your control unit manual for specific wiring information on the control unit
being used. If you are using a Siemens control unit, see Section 3 for connections.
Note: Branch current
must be protected by
a 15A overcurrent
device.
CAUTION HOT
Figure 2-3. AC Wiring
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2.5.2 Battery Connection
The PAD-3 requires a 24V sealed lead-acid battery set. The battery capacity can be from 7 to 15A.H. For
battery sets larger than 7A.H., an enclosure with System 3 rails or a separate battery enclosure is
required.
The following steps and diagram explain how to connect the Siemens BT-33, 7A.H. battery set.
1. Connect black wire to the negative (-) side of battery #2.
2. Connect jumper wire from the positive (+) side of battery #2 to the negative side of battery #1.
3. Connect red wire to the positive (+) side of battery #1.
Figure 2-4. Battery Installation
F2
1
2
3
J4
BATTERY
CHARGER
1-2 ENABLED
2-3 DISABLED
J10
1
2
3
1
2
3
K6
J5
N.A.C.
JUMPERS
1-2 CLASS B
2-3 CLASS A
D14
1
2
3
F3
J2
B+
J3
B-
J8J7
1
2
3
INPUT CURRENT (MAX.) : 6.1A
CHARGE VOLTAGE (MAX.) : 27.8VDC
CHARGE CURRENT (MAX.) : 3.3A
24V BATTERY SET
(7 TO 15.0 AH)
SUPERVISED
NON-POWER LIMITED
Figure 2-5. Battery Wiring
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2.5.2.1 Multiple Module Battery Connection
For applications where multiple PAD-3 boards are mounted in an enclosure with System 3 rails, it may be
possible to connect two boards to a single battery set. When using a single battery set for two boards, the
following rules must be followed:
a) Both PAD-3 boards must be located within the same enclosure and mounted adjacent to each other.
b) The combined battery A.H. rating required for both boards does not exceed 15 A.H.
c) The alarm current must never exceed 6.14A singularly or with 2 PAD-3s combined.
d) One of the PAD-3 boards must have its charging circuit disabled.
e) The PAD-3 with the active charger is limited to 1.5 amps of auxiliary DC power at terminals 18 and
19.
f) Two (2) battery connection splitters (part number 230-299203) are used on the battery set for proper
connection.
The following steps and diagrams explain how to connect two PAD-3 boards to a single battery set.
1. Install a battery connection splitter (see Figure 2-6) to the positive and negative terminals on the
battery set. If the battery set contains two 12-volt batteries to be wired in series, install one splitter on
the positive terminal of battery #1 and the other to the negative terminal of the battery #2.
2. Connect the black wires from both PAD-3 boards to the splitter on the negative terminal of battery #2.
3. If the battery set contains two 12-volt batteries, connect the jumper wire from the remaining single
positive terminal of battery #2 to the negative terminal on battery #1.
4. Connect the red wires from both PAD-3 boards to the splitter on the positive terminal of battery #1.
See Figure 2-7.
To each PAD-3
battery connection
terminal
To Battery Terminal
5. Disable the battery charger on one of the units. See Section 5.2 for directions.
Figure 2-8 shows how to wire for Style Y (Class B) input and output supervision. Use in/out wiring
methods for proper supervision.
Style Y (Class B) Output Notification Circuits
Figure 2-8 shows four, 1.5 amp devices wired as Style Y (Class B) circuits.
Place a 24K ohm EOL resistor (provided) at the end of each loop to enable notification output supervision
when using all outputs as Style Y (Class B) notification circuits. The 24K EOLs must be wired to the
terminals whether or not you are using all output terminals.
Style Y (Class B) Supervised Input Circuits
Figure 2-8 shows Style Y (Class B) supervised wiring from a fire alarm control unit to the PAD-3 board.
Use the control panel’s EOL resistor installed as shown to enable notification input supervision.
Trouble
Relay
10 1115
16-33VDC / VFW
7mA MAX.
SUPERVISED BY
FIRE ALARM CONTROL
UNIT, POWER LIMITED
Input 1
213
Input 2
4
AC Fail
5
6789
Class B notification
EOL
(SEE CONTROL UNIT
INSTALLATION
INSTRUCTIONS)
output from fire panel
-
+
Figure 2-8. Style Y (Class B) Supervised Input/Output Connections
NAC
12
13
-
+
-
+
24K 1/2W
PART NO.
140-820405
NAC
NAC
16
14
Notification Appliance Circuit
Style Y, Class B
Supervised, Power Limited
See Owner's Manual for
Compatible Devices
Figure 2-9 shows how to wire for Style Z (Class A) input and output supervision. Use in/out wiring
methods for proper supervision.
Style Z (Class A) Output Notification Circuits
The configuration shown in Figure 2-9 shows two, 3-amp devices wired as Style Z (Class A) circuits.
When you are using the outputs as Style Z (Class A) circuits, loop the wiring back to the corresponding
circuit pair. For Style Z (Class A) wiring, no external EOL is necessary since it is built into the board.
Style Z (Class A) Supervised Input Circuits
The configuration shown in Figure 2-9 shows Style Z (Class A) supervised wiring from a fire alarm control
unit to the PAD-3 board. Pay close attention to the polarities when wiring the unit and follow these
requirements:
When wiring to terminal 2 and 5 on TB2, you must use two separate wires. Do not loop a single wire or
twist two conductor wires together.
Do not use notification appliances on Style Z (Class A) circuits connected for input. The PAD-3 will detect
voltage across the input circuits, but is not designed to pass the added current load from notification
appliances.
Two separate
2
wires
2
Correct
Input 1
1
Input 2
2
3
4
AC Fail
5
678 9
Trouble
Relay
10
NAC
14
15
NAC
16
17
NAC
18
19
AUX PS
20 21
NAC
12
11
13
16-33VDC / VFW
7mA MAX.
SUPERVISED
BY FIRE ALARM
CONTROL
UNIT, POWER
LIMITED
Looping
Single wire
CAUTION:
For system supervision,
DO NOT USE LOOPED WIRE
UNDER TERMINALS for terminal
2 and 5. Break wire run to provide
supervision of connections.
Figure 2-9 Style Z (Class A) Supervised Input/Output Connections
Notification Appliance Circuit
Style Z, Class A
Supervised, Power Limited
See Owner’s Manual for
Compatible Devices
Polarity shown in activated
condition.
2 NAC CIRCUITS
.
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2.5.5 Auxiliary Power Supply Output
The auxiliary power supply output provides a 24VDC power source. It is unsupervised and power limited.
For applications where the battery charger circuit charges batteries of 7.0 A.H. or less, or if the battery
charger is disabled, this output is limited to 3.0 amps maximum. For batteries between 15 A.H. and 7.0
A.H., this output is limited to 1.5 amps maximum.
TB2
AUX
P.S.
AUXILIARY POWER OUTPUT
(REFER TO SECTION 1.3 GENERAL SPECIFICATIONS)
Figure 2-10. Auxiliary Power Supply Output Connection
3A MAX., 18-28 VDC
UNSUPERVISED, POWER LIMITED
2.5.6 Common Trouble Relay
The PAD-3 board has a Form C trouble relay built into terminals 9-11 of TB2. The trouble relay will deenergize under a trouble condition.
A typical application of the trouble relay is to connect the PAD-3 normally closed (N.C.) contacts in series
with an EOL of a spare IDC or NAC or monitor input from a fire alarm control unit. This will cause a
trouble on the fire alarm control unit when the PAD-3 opens its trouble contacts.
The common trouble relay will be de-energized after selectable delay (60-180 minutes, refer to Section
5.1.4) if AC is low or lost.
Note: The N.C. contact is the relay contact that is closed when the PAD-3 has power and there are no
trouble conditions.
Input 1
1
2
TROUBLE RELAY CONTACT
(SHOWN IN NORMAL
STANDBY CONDITION)
5A @ 30VDC/VAC,
RESISTIVE FOR POWER
LIMITED SOURCE
UNSUPERVISED
Input 2
5
4
678 9
3
AC Fail
Trouble
Relay
10
11
N.O.COMN.C.
IDC EOL
(SEE CONTROL UNIT
INSTALLATION INSTRUCTIONS)
NAC
NAC
12
INITIATING CIRCUIT
15
14
13
CONTROL UNIT
CONNECTION
+
-
IDC
Figure 2-11. Trouble Relay Connection Example
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2.5.7AC Fail Relay
AC Fail Relay provides a normally open (N.O.) Form “A” contact which will be de-energized without delay
if AC is low or lost. It provides a local signal (audible and visual) of AC fail at the protected premises but
will not cause the DACT to signal.
PAD-3
Trouble
AC Fail
Input 1
1
Input 2
2
3
4
5
6
Relay
NAC
9
7
8
10
11
12
13
14
*
*
EOL
1
234
FS-250
TB3
LOOP CKT
1+
12+
2-
EOL 24K
½W 5%
P/N 140-820405
FS-DLC LOOP
EOL
5
HTRI-S
#1
TB12
TB13
1+
12+
NOTES:
2-
1. Program HTRI-S #1 as Status causing, which will not cause the DACT
3+
34+
4-
to signal but will cause local visual and audible signal. It provides a local
signaling of AC fail at the protected premises.
2. Program HTRI-S #2 as Trouble causing, which will cause the DACT to
signal for all common troubles (including AC fail with reporting delay).
Figure 2-12. AC Fail Relay Connection Example
*
EOL
3.6K, 1/4W
P/N 140-830185,
or
470 OHMS, 1/4W
P/N 140-820164,
as applicable
3
4
5
HTRI-S
#2
1
2
2.6 Ground Fault Detection Enable/Disable
For some applications (when used with RSA-Series annunciators, for instance), the PAD-3 is used to
provide power to an auxiliary device which gets a control signal from a fire alarm panel. The ground fault
reference for the PAD-3 may be different than the reference used by the fire alarm panel, resulting in a
ground fault trouble at the panel even when none exists. To remedy this condition, the PAD-3 can have
its ground fault detection circuit disabled. Once disabled, the fire alarm panel’s ground fault detection
circuitry will detect any ground fault in the system. See Section 5-2 for correct positioning of this jumper,
and see Figure 2-2 for the location of this jumper.
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3. CONNECTION TO CONTROL UNITS
The drawings in this section show you how to connect the PAD-3 to compatible Siemens control units.
See control unit owners manual for more information.
PAD-3
Input 1
213
Input 2
4
5
6789
2.2K 1/2W EOL
P/N 140-820380
Note:
3 ohm max. total line resistance
of Notification Appliance Circuit
connecting wire.
SMB-2, MMB-2
AC Fail
Trouble
Relay
10 1115
NAC
12
13
-
P/N 140-820405
14
+
NAC
-
24K EOL
16
+
NAC
NAC
AUX
18
19
17
-
+
2120
+-
-
Class B
Supervised
Notification
Circuits
TB5-4
TB5-3
TB5-2
TB5-1
MMB-3
TB7-4
TB7-3
TB7-2
TB7-1
Polarized
Notification
+
Appliances
-
Polarized
Notification
+
Appliances
-
Figure 3-1. Connection to MXL, MXL-IQ
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Input 1
1
2
2.2K 1/2W EOL
P/N 140-820380
PAD-3
Input 2
4
3
AC Fail
5
67 89
Trouble
Relay
10 11
12
NAC
13
NAC
14
15
NAC
16
17
NAC
18
19
AUX
20 21
-
Note: The CSM-4 allows up to
3 ohm max. total line resistance
for Notification Appliance Circuits.
Figure 3-2. Connection to CSM-4
-
--
P/N 140-820405
24K EOL
TB1, TB2, TB3 or TB4
5
1
2
4
3
MOM-4
Polarized Notification
Appliances
-
Class B
Supervised
Notification
Circuits
6
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Input 1
1
3
2
Input 2
4
5
67 89
10K 1/2W EOL
P/N 140-820396
AC Fail
Trouble
Relay
10 11
NAC
12
13
NAC
14
15
PAD-3
NAC
17
16
NAC
18
19
AUX
20 21
-
Note:
3 ohm max. total line resistance
of Notification Appliance Circuit
connecting wire.
Figure 3-3. Connection to SXL-EX
SXL-EX
TB-7
BL1-1
BL1-2
BL2-1
BL2-2
-
--
-
Class B
Supervised
Notification
P/N 140-820405
24K EOL
Circuit
Polarized
Notification
+
Appliances
-
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Page 24
Input 1
1
2
5.6K 1/2W EOL
P/N 140-112166
PAD-3
Input 2
4
3
AC Fail
5
67 89
Trouble
Relay
10 11
NAC
12
13
NAC
14
15
NAC
16
17
NAC
18
19
AUX
20
21
-
Note:
3 ohm max. total line resistance
of Notification Appliance Circuit
connecting wire.
Figure 3-4. Connection to CP-35
31
-
--
-
Class B
Supervised
Notification
P/N 140-820405
24K EOL
+
33
3
3
2
-
4
36
3
5
CP-35
Circuits
Polarized
Notification
Appliances
20
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Input 1
1
3
2
Input 2
4
5
67 89
5.6K 1/2W EOL
P/N 140-112166
AC Fail
Trouble
Relay
10 11
12
NAC
13
NAC
14
15
PAD-3
NAC
17
16
NAC
18
19
AUX
20
21
-
CP-35
1
2
AE-30U
-
+
3
456
CP-35
36
-
P/N 140-820405
24K EOL
Note:
3 ohm max. total line resistance
of Notification Appliance Circuit
connecting wire.
--
-
Class B
Supervised
Notification
Circuit
37
Actuation input
38
Polarized Notification
Input power
Figure 3-5. Connection to AE-30U
Appliances
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AA-30U
Input 1
1
PAD-3
Input 2
4
3
2
AC Fail
5
67 89
Trouble
Relay
10 11
NAC
12
13
+
NAC
NAC
14
15
16
+
Class A
+
--
17
-
NAC
18
19
+
AUX
20
21
-
-
Supervised
Notification
Circuits
5.6K 1/2W EOL
P/N 140-112166
8
7
-
+
1
3
2
456
CP-35
37
Actuation input
38
Input power
Figure 3-6. Connection to AA-30U
CP-35
36
Note:
3 ohm max. total line resistance
of Notification Appliance Circuit
connecting wire.
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Page 27
ALD
Loop
PAD-3
Input 1
213
Input 2
4
5
3.6K 1/4W EOL
P/N 140-820185
AC Fail
67 89
_
+
1
3
2
Trouble
Relay
10 11
NAC
12
13
-
+
P/N 140-820405
NAC
14
15
+
24K EOL
45678
NAC
16
-
+
NAC
17
18
19
+
-
-
+
Class B
Supervised
Notification
Circuits
To earth ground
AUX
20
21
-
_
ALD
Loop
+
TRI-B6R
Figure 3-7. Connection to TRI-B6R
3.6K 1/4W EOL
P/N 140-820185
To earth ground
1
3
2
45678
TRI-B6R
Note:
Set TRI-B6R for normally
open trouble causing
operation.
23
Page 28
Input 1
213
Input 2
4
AC Fail
5
67 891210 11
Trouble
Relay
NAC
13
NAC
14
PAD-3
NAC
15
16
17
NAC
18
19
20
+
AUX
21
-
ALD
Loop
3.6K, 1/4W EOL
P/N 140-820185, or
470 ohm, 1/4W EOL
P/N 140-820164,
as applicable
To earth ground
3.6K 1/4W EOL
P/N 140-820185
1
2
1
2
3
4
5
+
3
45678
TRI-B6R
TRI-R
-
-
+
+
P/N 140-820405
24K EOL
To earth ground
8
7
6
-
-
+
Class B
Supervised
Notification
Circuits
__
++
Note:
Set TRI-B6R and TRI-R for
normally open trouble
causing operation.
ALD
Loop
Figure 3-8. Connection to TRI-B6R and TRI-R
24
Page 29
PAD-3
Input 1
2
1
3
EOL 24K
½W 5%
P/N 140-820405
Input 2
4
5
AC Fail
6
Trouble
Relay
9
7
8
NAC
10
11
12
13
14
TB12
1+
12+
2-
TB13
3+
34+
4-
Figure 3-9. Connection to FS-250
25
Page 30
POLARIZED
NOTIFICATION
APPLIANCES
Input 1
213
Input 2
4
5
24K, 1W EOL
P/N 140-033771
*
NC NC
+
AC Fail
6789
-
+
NCNCNC
Trouble
Relay
NAC
14
12
10 1115
13
-
+
+-+
P/N 140-820405
ZONE 2
24K,
*
1W
5%
STYLE Y
CLASS B
FOR CANADIAN APPLICATIONS,
*
USE EOL MODEL REL-EOL.
OMIT THE DIODE.
-
PAD-3
NAC
24K EOL
16
NAC
NOTES:
1. All wiring must be in accordance
with Article 760 of NEC or local
building codes. Wiring for each
AUX
NAC
17
20
18
21
19
+-
-
-
+
Class B
Supervised
Notification
Circuits
zone can either be Class A or
Class B.
2. All output circuits are power limited
to NFPA 70 per NEC 760.
3. Electrical Ratings:
Output Zone Supervisory:
4mA max @ 24VDC
Output Zone Alarm:
4A max @ 24VDC
6. Maximum line resistance is
dependent upon the maximum
current draw of connected
notification appliances when
activated. The field wiring
resistance cannot exceed the
maximum line resistance specified
for any given NAC current draw
(See Table below).
7. ZIC output must be configured as
NAC, NAC-Coded or Sync Strobe
only. All other usages are not
applicable.
8. Refer to the Zeus Quick Start
Manual (P/N 315-033875) and
ZIC-4A Installation Instructions
(P/N 315-033050) for additional
information.
12345678
910111213141516
ONE SLOT OF CC-5
1718192021222324
+
ZONE 1
INPUT
-
+
ZONE 2
INPUT
-
+
ZONE 3
INPUT
NC
-
+
ZONE 4
INPUT
-
Figure 3-10. Connection to ZIC-4A (FireFinder-XLS)
ZONE 4
STYLE Y
CLASS B
*
24K,
Current
Draw
1W
5%
4.0A0.8 ohms
Max Line
Resistance
3.5A1.0 ohms
3.0A1.2 ohms
2.5A1.5 ohms
2.0A2.0 ohms
1.5A2.7 ohms
1.0A4.2 ohms
0.5A8.7 ohms
26
Page 31
4. SAMPLE APPLICATIONS
O
p
3
O
p
O
p
O
p
O
p
3
O
p
O
p
O
p
The drawings in this section show various configurations, including daisy-chaining.
4.1 Notification Appliance Power Applications
120 VAC
Notification Appliance
Circuit
Fire Control
Unit
Input 1
1
2
3
PAD-3
Figure 4-1. Input 1 activates All Four Outputs and Input 2 not used
120 VAC
Notification Appliance
Circuit
Fire Control
Unit
Sync Horns/Strobes
Input 2
1
2
3
Input 1
u
u
t
t
u
u
t
t
1 2
PAD-3
u
u
t
t
u
u
t
t
1 2
u
u
t
t
u
u
t
t
4
u
u
t
t
u
u
t
t
4
Figure 4-2. Input 1 activates All Four Outputs and Input 2 used to silence Sync Horns
NOTE: Only the appliances connected to the same PAD-3 will operate synchronously when the output
circuits of the PAD-3 are set to synchronization mode. The appliances connected to a different
PAD-3 will not operate synchronously.
Figure 4-4. One Control Panel activating two PAD-3s
28
Page 33
O
p
3
O
p
O
p
O
p
3
O
p
O
p
O
p
3
O
p
O
p
O
p
120 VAC
Notification Appliance
Circuit
Fire Control
Unit
Output 4
120 VAC
Input 1
120 VAC
1
2
3
PAD-3
u
u
u
t
t
t
u
u
u
t
t
t
1 2
1
2
3
Input 1
PAD-3
u
u
t
t
u
u
t
t
u
t
u
t
Output 4
1 2
Figure 4-5. One Control Panel activating three PAD-3s
Input 1
1
2
3
PAD-3
u
u
u
t
t
t
u
u
u
t
t
t
1 2
u
t
u
t
4
29
Page 34
O
p
3
O
p
O
p
O
p
O
p
3
O
p
O
p
O
p
O
p
3
O
p
p
A
120 VAC
Notification Appliance
Circuit #1
120 VAC
Input 1
Fire Control
Unit
PAD-3
Notification Appliance
Circuit #2
Output 1
Input 1
Input 2
Input 1
ut 4
Out
120 VAC
PAD-3
PAD-3
u
u
u
t
t
t
u
u
u
t
t
t
12
Outputs Active when Fire
Panel’s Notification Circuit
#1 Activates
NOTE: Only the appliances connected to the same PAD-3 will operate synchronously when the
output circuits of the PAD-3 are set to synchronization mode. The appliances connected to a different
D-3 will not operate synchronously.
P
Figure 4-6. Each control signal circuit activates five output circuits
u
t
u
t
4
u
t
u
t
2
u
t
u
t
u
u
t
u
u
t
12
u
u
t
t
t
u
u
t
t
t
4
Outputs Active when Fire
Panel’s Notification Circuit
#2 Activates
30
Page 35
Fire Control Unit
CAUTION: For system supervision,
DO NOT USE LOOPED WIRE UNDER TERMINALS.
Break wire run to provide supervision of connections.
Notification
Circuit
+-
Fire Alarm
Zone
1+
PAD-3
1-
Trouble contacts
monitored by
FACP zone
NC
COM
1+
PAD-3
1-
NC
COM
Two Separate
Wires
Correct
1+
Looping
Single Wire
Incorrect
PAD-3
1-
Twisting
Two Wires
Incorrect
NC
COM
P/N 140-820405
24K EOL of
NAC Circuit
EOL of Trouble
Contact from FACP
Figure 4-7. Multiple PAD-3s activated by a single notification circuit
31
Page 36
4.2 Door Holder Applications
In a typical door holder application, the door holder power must be released to close all fire doors under
the following conditions:
Any active alarm condition.
AC power is no longer present (to conserve backup battery power).
To close the fire doors in these situations, wire a normally closed relay contact from the fire alarm control
unit in series with the auxiliary power to the door holders.
The circuit shown in Figure 4-8 will provide up to 3 amps of door holder current. The power in this
example is released when AC power is off for 30 seconds or more, or when the relay from the fire alarm
control unit opens. See Section 1.1 for a description of the auxiliary power options, and Section 5.1.2 for
information on choosing the options.
Fire Alarm
Control Unit
AUX
20
21
Alarm Relay
Figure 4-8. Door Holder Wiring Example
Door Holders
32
Page 37
5. PROGRAMMING
The PAD-3 functions are programmed with a 10-position DIP switch and six 3-position jumpers. The
following section describes each setting.
5.1 DIP SWITCH SETTINGS
The 10-position DIP switch allows you to select the following:
• How long will the unit wait before indicating a loss of AC
• Which input (Input 1 or Input 2) will control the NAC outputs
• Which outputs to wire as Style Z (Class A) and Style Y (Class B)
• Auxiliary power output operation on AC power fault
• Which outputs to operate as steady outputs or ANSI temporal
Refer to Figure 2-2 for the location of the DIP switch on the circuit board assembly.
All DIP switches are factory set for off; verify proper settings for proper system operation. Slide the
switches to the left for OFF and to the right for ON.
Note: The unit checks DIP switch settings only when reset. If you change these switch
settings, you must push SW2 reset switch to recognize the new DIP switch settings.
SW1
OFF ON
1
2
3
4
5
6
7
8
9
10
33
Page 38
5.1.1 Selecting the Input/Output Configuration
Figure 5-1 shows the position of each switch on the DIP switch for various input and output
configurations. The position of switch 4 through 10 does not affect the relationship of inputs to outputs.
ON
OFF
1
12
12
12
Switch 1 OFF & Switch 2 OFF & Switch 3 OFF:
Input 1 controls all outputs (Class B).
21
6
45
3
910
7
8
Input 2 not used.
Switch 1 ON & Switch 2 OFF & Switch 3 OFF:
Input 1 controls all outputs (Class B).
4
3
2
5
6
910
7
8
Input 2 used to control silencing of Sync horns.
Switch 1 OFF & Switch 2 ON & Switch 3 OFF:
Input 1 controls outputs 1, 2 and 3 (Class B).
4
3
21
5
6
910
7
8
Input 2 controls output 4 (Class B).
Switch 1 ON & Switch 2 ON & Switch 3 OFF:
Input 1 controls outputs 1 and 2 (Class B).
4
3
5
7
6
8
10
9
Input 2 controls outputs 3 and 4 (Class B).
Switch 1 OFF & Switch 2 OFF & Switch 3 ON:
Input 1 controls outputs 1-2 and 3-4 as Class A.
4
3
5
6
8
7
910
Input 2 not used.
Switch 1 ON & Switch 2 OFF & Switch 3 ON:
Input 1 controls outputs 1-2 and 3-4 as Class A.
4
3
5
6
910
7
8
Input 2 used to control silencing of Sync horns.
Switch 1 OFF & Switch 2 ON & Switch 3 ON:
Input 1 controls output 1-2 as Class A.
12
3
5
7
6
8
10
9
Input 2 controls output 3-4 as Class A.
4
Figure 5-1. Setting DIP Switches 1-3
Note: Changing settings for DIP switches 1-3 may affect the settings for jumpers J4-J8.
34
Page 39
5.1.2 Setting the Auxiliary Output
Switch 4 on the DIP switch determines how the auxiliary power operates.
The PAD-3 checks switch 4 only when powering up. If you change this switch, you must push switch SW2
momentarily to reset the unit to recognize the new switch setting.
ON
OFF
23456
3
2
56
4
Figure 5-2. Setting DIP Switch 4
Switch 4 OFF:
Auxiliary Power Output always on.
Switch 4 ON:
Auxiliary Power Output will shutdown 30 seconds after an AC Power fault
and the unit is running on battery.
35
Page 40
5.1.3 Setting the Input’s Control of their NACs
DIP switch settings 5 to 8 are designed to produce outputs from a constant on input. The figures shown
below compare the output patterns of configurations before and after the addition of this feature.
Slave Operation
The Slave operation output follows the input and can be used when the fire alarm control unit NAC is
steady, coded, march time, or temporal and the desired output is the same.
Master Temporal Operation
Master Sync Strobe/Horn Operation
Input:
Steady
Output:
Temporal Operation
Output:
Sync Strobe/Horn Operation
Figure 5-3. Master Input/Output Relationship
Switch 5 OFF & Switch 6 OFF:
Slave Operation-Input 1’s outputs will follow the input
pattern (steady in, coded, march time, temporal, or Sync).
Switch 5 ON & Switch 6 OFF:
Master Temporal Operation-Inputs 1’s outputs will be
temporal when the input is on steady.
Switch 5 OFF & Switch 6 ON:
Master Sync Strobe/Horn Operation-Inputs 1’s outputs will
provide Sync signals when the input is on steady.
Switch 7 OFF & Switch 8 OFF:
Slave Operation-Input 2’s outputs will follow the input
pattern (steady, coded, march time, temporal, or Sync).
Switch 7 ON & Switch 8 OFF:
Master Temporal Operation-Inputs 2’s outputs will be
temporal when the input is on steady.
Figure 5-4. Setting DIP Switches 5-8
Switch 7 OFF & Switch 8 ON:
Master Sync Strobe/Horn Operation-Inputs 2’s outputs will
provide Sync signals when the input is on steady.
36
Page 41
5.1.4 Setting the AC Power Fault Reporting Delay
Normal selection for reporting loss of AC is 60 minutes.
The OFF position is for test purposes only and the normal position for switch 9 is ON. For testing the Low
AC reporting, you can temporarily turn switch 4 OFF without removing power.
Remember to turn the switch ON when testing is complete.
ON
Switch 9 OFF & Switch 10 OFF:
AC power fault reporting will not be delayed.
OFF
7
6
9
8
10
Switch 9 ON & Switch 10 OFF:
AC power fault reporting will be delayed 60 minutes.
678910
Switch 9 OFF & Switch 10 ON:
AC power fault reporting will be delayed 120 minutes.
678910
Switch 9 ON & Switch 10 ON:
AC power fault reporting will be delayed 180 minutes.
678910
Figure 5-5. Setting DIP Switch 9 and 10
37
Page 42
5.2 JUMPER SETTINGS
Factory settings are shown. See Figure 2-2 for the location of these jumpers.
Note: Changing settings for J4-J8 also affect the settings for SW1 DIP switches 1-3.
J4 – NAC 1-2 Configuration (J5 must be set the same)
• 1 Class B
• 2
• 3 Class A
J5 – NAC 1-2 Configuration (J4 must be set the same)
• 1 Class B
• 2
• 3 Class A
J7 – NAC 3-4 Configuration (J8 must be set the same)
• 1 Class B
• 2
• 3 Class A
J8 – NAC 3-4 Configuration (J7 must be set the same)
• 1 Class B
• 2
• 3 Class A
J9 – Ground Detection Configuration
• 1 Enabled
• 2
• 3 Disabled
J10 – Battery Charger Configuration
• 1 Enabled
• 2
• 3 Disabled
38
Page 43
6. REFERENCE DATA
This section provides reference for the following topics:
Notification Appliances – refer to the device manual for ratings
Model No. Quantity Alarm current
3)
Auxiliary Devices – refer to the device manual for ratings
Model No. Quantity Standby current Alarm current
4)
5) Total amperage required (totals for line 1, 2, 3 and 4)
6) Number of Standby Hours required (4, 24, or 60, per NFPA 72)
7) A.H. for Standby (without AC reporting delay) Multiply line 5 times line 6
8) A.H. for AC reporting delay C
9) Total A.H for Standby (add line 7 and line 8)
10) Length of Alarm Operation D
11) A.H for Alarm (multiply line 5 times line 10)
12) Total Standby and Alarm A.H required (add line 9 and line 11)
13) Battery De-rating Factor 1.25
14) Battery Amp-Hour Rating required (multiply line 12 times line 13) E
A. Up to two PAD-3 boards can be connected to a common battery set. When calculating for 2 PAD-3 boards
I. Both boards must be mounted on System 3 rails in the same enclosure.
II. One of the boards must have the battery charger circuit disconnected.
III. The board with the ACTIVE charger is limited to 1.50 amps for the aux. power (terminals 18 and 19).
IV. Both sets of battery connections are to be connected to the same battery set using 2 battery connection splitters, P/N 230-
299203.
B. The Alarm Current must never exceed 6.14 amps! (6 amps output for NACs and aux. power, 0.14 amps for internal operation)
C. A.H. required for AC reporting delay – 0 hours = 0.00 A.H.; 60 minutes = 0.24 A.H.; 120 minutes = 0.60 A.H.; 180 minutes =
0.96 A.H.
D. Alarm operation length while on battery power varies with application and local codes. Check with the AHJ to determine if 5
minutes (0.0833 hours), 30 minutes (0.5 hours), 1 hour, or 2 hours of alarm operation is required.
E. Battery rating required cannot exceed 15 A.H. For battery ratings 7.0 A.H. or below, the full 3.0 amps are available for auxiliary
power (terminals 18 and 19). For battery ratings between 7.0 and 15 A.H., 1.50 amps are available for auxiliary power.
F. The following table shows the maximum standby current allowed: When the Auxiliary Power Output is programmed to
shutdown on AC power fault (SW1.4-ON), up to 3.015 Amps is allowed.
See Siemens P/N 315-096363 for compatible notification appliances.
8. TROUBLESHOOTING
This section describes the LED states and provides possible trouble conditions of the PAD-3.
8.1 LED INDICATORS
Light-emitting diodes (LEDs) indicate fault and normal conditions. The seven LEDs indicate a fault
condition in one of the circuits (either outputs 1 through 4, auxiliary power, ground fault, or battery). A fault
condition in the LEDs corresponding circuit will turn on the LED (labeled on the board). The POWER LED
will normally be on and turn off to indicate an AC Fail condition. See Figure 2-2 for locations of LEDs.
Their functions are as follows:
DESIGNATION MARKING COLOR DESCRIPTION
DS1 OUTPUT1 Yellow NAC 1 trouble LED.
DS2 OUTPUT2 Yellow NAC 2 trouble LED.
DS3 OUTPUT3 Yellow NAC 3 trouble LED.
DS4 OUTPUT4 Yellow NAC 4 trouble LED.
DS5 AUX. P.S. Yellow Auxiliary power output trouble LED
DS6 GRND Yellow Ground fault LED
DS7 BATTRY Yellow Battery trouble LED
DS8 POWER Green AC Power normal LED
8.2 IMPROPER OPERATION
If there is improper operation of the activation of the outputs, check for the following:
Was the reset switch SW2 pressed after changing the DIP switch settings?
Are the DIP switch settings correct for the application?
(See Section 5.1)
Are the jumper settings correct for the application?
(See Section 5.2)
Are the inputs activating correctly?
Are the correct type of notification appliances connected?
(Conventional or Sync Strobes/Horns)
41
Page 46
8.3 TROUBLE CONDITIONS
CAUTION: Troubleshooting is to be done only by qualified personnel who have been
trained to repair and test this fire alarm accessory.
Trouble conditions are sent to the fire alarm control unit from the trouble relay or associated input trouble
relay.
DESCRIPTION PROBABLE CAUSE
POWER LED (DS8) not lit. No AC input power.
Low AC input power (Less than 90VAC).
Notes:
1. DIP Switch SW1 switches 9 & 10 set the delay for reporting AC
power faults from 0 to 24 hours.
2. The green POWER LED turns off as soon as low AC or loss of AC
occurs (does not wait for delay).
3. The trouble restores within1 minute of the AC voltage restoring to
normal level.
BATTRY LED (DS7) lit. Low battery input power (Less than 21.4VDC).
No battery input power.
Shorted battery input.
Open polyswitch F2 or F3 (Disconnect battery and reconnect to reset).
Note:
The battery input is checked about once a minute for troubles and
restorals.
GRND LED (DS6) lit. One or more external field connections shorted to earth ground (Less
than 40K ohms).
Note:
When the PAD-3 power is referenced to the control unit power; the
ground detection circuit may be disabled with jumper J9.
AUX. P.S. LED (DS5) lit. Overcurrent condition on the auxiliary power output. (Trip with greater
than 3.7Amps.).
Note:
The circuit automatically tries to restore about once a minute.
OUTPUT1 LED (DS1) lit or
OUTPUT2 LED (DS2) lit or
OUTPUT3 LED (DS3) lit or
OUTPUT4 LED (DS4) lit.
Associated NAC is open (Greater than 49K ohms).
Associated NAC is shorted (Less than 18K ohms).
Associated NAC has an overcurrent condition (Trip with greater than
3.7Amps.).
Note:
The circuit automatically tries to restore about once a minute.
42
Page 47
8.4 FUSE REPLACEMENT
FUSE DESCRIPTION
F1 5A 250V 3AG Axial Lead Fuse
F2 5A RUE 500 Resettable Fuse
F3 9A RUE 900 Resettable Fuse
43
Page 48
9. BATTERY MAINTENANCE
Perform the following tests at the recommended interval. Replace the battery set every four years or if
any of the test criteria are not met.
Initiation / Reacceptance
1. Charger Test—With the batteries fully charged and connected to the charger, measure the voltage
across the battery set. It must read 27.3V +/- 0.3V.
2. Discharge Test—With full system alarm load, the voltage on a fully charged battery must not fall
below 20.4V after 30 minutes.
3. Load Voltage Test—With full system alarm load, the voltage on a fully charged battery must not fall
below 24.6V after one minute.
Testing Interval
1. Semiannually—Perform the Load Voltage Test.
2. Annually—Perform the Charger Test and Discharge Test.
44
Page 49
10. GLOSSARY
Alarm Signal. A signal that indicates the presence of an emergency requiring immediate action, such as
an alarm for fire from a manual station, a waterflow alarm, or a automatic smoke detector.
Alarm System. A combination of compatible initiating devices, control units, and notification appliances
designed and installed to produce an alarm signal in the event of a fire.
Audible Signal. A sound made by one or more audible notification appliances, such as bells or horns, in
response to the operation of an initiating device.
Authority Having Jurisdiction (AHJ). The organization, office, or individual responsible for approving
equipment, installations or procedures.
Class A Circuit. An initiating device or notification appliance circuit in which all components remain fully
functional when a single open or ground exists in the circuit.
Class B Circuit. An initiating device or notification appliance circuit in which some or all components may
be disabled when a single open or ground exists in the circuit.
End Of Line (EOL). A device used to terminate a supervised circuit.
General Alarm. A term usually applied to the simultaneous operation of all the notification appliances on
a system.
Ground Fault. A trouble condition in which a low resistance has been detected between the system
wiring and conduit ground.
Initiating Device Circuit (IDC). A circuit to which initiating devices are connected.
Labeled. Equipment or materials to which a label, symbol, or other identifying mark of an organization
acceptable to the AHJ and concerned with product evaluation has been attached. The organization’s
label indicates that the manufacturer complies with appropriate standards, performs in a specified manner
and maintains periodic inspection of the production of such labeled equipment or materials.
Listed. Equipment or materials included in a list published by an organization acceptable to the AHJ and
concerned with product evaluation. Inclusion in the list indicates that the equipment or materials comply
with appropriate standards, and has been found suitable for use in a specified manner. The manufacturer
maintains periodic inspection of production of listed equipment or materials.
NEC. National Electrical Code also published as NFPA standard 70.
Notification Appliance. An electrically operated appliance used to indicate the system status such as a
bell, horn, strobe light or speaker.
Notification Appliance Circuit (NAC). A circuit to which notification appliances are connected.
Power Supply. That portion of the fire alarm control unit which provides the power needed to operate all
control unit modules, as well as that, needed to operate all electrically powered initiating devices and all
notification appliances.
Trouble Signal. An audible signal indicating trouble of any nature, such as a circuit break or ground,
occurring in the device or wiring associated with a fire alarm signal.
Zone. A designated area of a building. Zone is commonly interchanged with initiating device circuit.
45
Page 50
46
Page 51
47
Page 52
Siemens Building Technologies, Inc. Siemens Building Technologies, Ltd.
8 Fernwood Road 2 Kenview Boulevard
Florham Park, New Jersey 07932 Brampton, Ontario L6T 5E4 Canada
P/N 315-099082-9
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