wheelock SP4-APS INSTALLATION INSTRUCTIONS

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Long Branch, N.J. 07740

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INSTALLATION INSTRUCTIONS

ADDRESSABLE PAGING SPLITTER

(FOR SP40/2, SPB-160, SPB-80/4, and SPB-320)

Use this product according to this instruction manual. Please keep this instruction manual for future reference.

MODEL NUMBER:

109920 SP4-APS

1.0 GENERAL:

The Addressable Paging Splitter module (SP4-APS) is designed to be used with Wheelock’s SP40/2 SAFEPATH4 panel and
the SP4-TZC Zone Controller. The SP4-APS can also be mounted in SAFEPATH4 Audio Booster (SPB-160, SPB-80/4, and
SPB-320) panels. The SP4-APS provides a means for expanding one supervised audio output zone to four Class B or two
Class A supervised zones. The SP4-APS also provides two expansion outputs that can be used to add additional audio
booster modules in Class A or B configuration. The SP4-APS is UL Listed under Standard 864, Control Units for Fire
Protective Signaling Systems. It is for indoor use only.

One SP4-APS can be mounted inside the SP40/2 panel. The use of the Splitter Mounting Bracket (SPMB4Z) is required
when mounting the SP4-APS splitter(s) inside the Audio Booster panels.

The Addressable Paging Splitter module (SP4-APS) is also used to expand and distribute supervised telephone paging and
background music to selected zones when the SAFEPATH4 system is not in the alarm condition. When the SAFEPATH4
system is in the alarm condition all telephone paging and background music inputs are silenced and the emergency message
is broadcast on all zones. The SP4-APS is used with the Telephone Zone Controller (SP4-TZC) and controls the distribution
of the telephone paging and background music functions.

NOTE: Use of the Telephone Zone Controller (SP4-TZC) is supplementary.

The SP4-APS contains 16 LED indicators used to monitor and troubleshoot the module.

Refer to the Installation Instructions for the Telephone Zone Controller (SP4-TZC) P84567 when connecting the SP4-APS
modules for telephone paging and background music operation.

NOTE: All CAUTIONS and WARNINGS are identified by the symbol . All warnings are printed in bold capital
letters.

WARNING: PLEASE READ THESE INSTRUCTIONS CAREFULLY BEFORE USING THIS PRODUCT.
FAILURE TO COMPLY WITH ANY OF THE FOLLOWING INSTRUCTIONS, CAUTIONS AND WARNINGS
COULD RESULT IN IMPROPER APPLICATION, INSTALLATION AND/OR OPERATION OF THESE
PRODUCTS IN AN EMERGENCY SITUATION, WHICH COULD RESULT IN PROPERTY DAMAGE AND
SERIOUS INJURY OR DEATH TO YOU AND/OR OTHERS.

2.0 SPECIFICATIONS:

The SP4-APS has a maximum power output per zone that cannot exceed what is listed in Table 1.

Table 1: SP4-APS Specifications

Rated

Voltage

Rated

Current

Audio Input

Voltage

Max Power

Per Zone

25VRMS 40W 24VDC 0.120A

70.7VRMS 40W

The total audio power output from all zones on the SP4-APS cannot exceed the audio input power.

Copyright 2005 Wheelock, Inc. All rights reserved.

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2.1 WIRING SPECIFICATIONS:

Cable Size: All terminal blocks accept #12 - #18 American Wire Gauge (AWG) for single wire connection.

3.0 WIRING INSTRUCTIONS:

NOTE: The terminal blocks on the SP4-APS are removable. To remove a terminal block, pull the block straight up from the

circuit board as shown in Figure 1. Attach wires to the desired connections, then plug the terminal block back on the board
being careful to match and align the pins.

Figure 1: Removable Terminal Block

Figure 2 shows the PC board layout with the locations of all terminal blocks.

TB7

TB6

OUT

RS-485

D38

D34

D39

D40

D33

D41

D42

D43

D36

D35

D37

D32

POWER TROUBLE

TB1

Terminals for the RS-485 connections are used with the SP4-TZC and are explained in the SP4-TZC installation instructions.

3.1 Audio Zone Output Wiring

OUT IN

IN

ALARM

D45

D44

CLASS

24 VDC

OUT

IN

Figure 2: SP4-APS PC Board

SW1

NAC

CC

B

A

JP1

JP1

Shorted = 70Vrms
Open = 25Vrms

Z1

Z2

SP4-APS

SW2

Z3 Z4

TB4TB3

AUDIO

TB2

TB5

EX2

EX1

IN

The SP4-APS can be configured for either “CLASS A” or “CLASS B”. It cannot do both at the same time. The maximum
audio power output on any zone is 40 watts. Expansion (EX1, EX2) terminals follow the Class A or B setting that applies to
all zones.
Instead of speakers, up to four SPB-160 or SPB-80/4 (or two SPB-320) Audio Boosters may be connected to an audio output
zone, provided that nothing else is on that zone. The total number of Audio Boosters combined shall not exceed 33.

NOTE: Factory setting is for Class B Wiring.

3.1.1 “CLASS A” Audio Wiring:

When an installation requires “CLASS A” audio field wiring on the SP4-APS module, the Class Selector Switch (SW2)
must be set for “CLASS A”. Note that no end-of-line resistors (UL Listed 10K Ohm, EOLR) are used on any of
the SP4-APS module audio output zones as shown in Figure 3. Zones Z1 and Z2 are connected in Class A
configuration as well as Z3 and Z4. Figure 3 shows the SP4-APS with SW2 and the audio field wiring set for “CLASS
A”.

The audio zone outputs are either 25Vrms or 70.7Vrms matching the audio input voltage. Remember, the SP40/2 has a
maximum audio output to the splitter of 40 watts, while the Audio Boosters have a maximum audio output to the splitter
of 80 watts.

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When circuit is not used, jumper
negative to negative and positive
to positive.

TB7

TB6

IN

TB1

IN

24 VDC

OUT

OUT

ALARM

D45

D44

CLASS

IN

OUT

RS-485

D38

D34

D39

D40

D33

D41

D42

D43

D37

D36

D35

D32

POWER TROUBLE

SW1

NAC

CC

B

A

JP1

JP1

Shorted = 70Vrms
Open = 25Vrms

Z1

Z2

SP4-APS

SW2

Z3 Z4

TB4TB3

AUDIO

TB2

TB5

EX2

EX1

IN

Figure 3: “CLASS A” Zone Connections

Any unused “CLASS A” zone must be jumpered negative to negative and positive to positive. If the Expansion (EX1,
EX2) terminals are not used, jumpers are required

3.1.2 “CLASS B” Audio Wiring:

. See Figure 3.

When an installation requires “CLASS B” audio field wiring, the Addressable Paging Splitter module’s Class Selector
Switch (SW2) must be set for “CLASS B.” Note that end-of-line resistors (UL Listed 10K Ohm, EOLR) are

required at the end of each audio output zone even if no speakers are present on a zone. End-of-line resistors are
required on the EX1 and EX2 connections whether they are used or not. Figure 4 shows the SP4-APS set for CLASS B

audio field wiring:

The audio zone outputs are either 25Vrms or 70.7Vrms matching the audio input voltage. Remember, the SP40/2 has a
maximum audio output to the splitter of 40 watts, while the Audio Boosters have a maximum audio output to the SP4­APS of 80 watts.

All circuits are terminated with an
UL Listed 10K Ohm EOLR

EOLR

EOLR

EOLR

EOLR

EOLR

TB7

D38

D41

D37

POWER

TB6

IN

TB1

IN

24 VDC

OUT

OUT

ALARM

D45

D44

CLASS

IN

OUT

RS-485

D34

D39

D40

D33

D42

D43

D36

D35

D32

SW1

NAC

CC

B

A

JP1

JP1

Shorted = 70Vrms
Open = 25Vrms

Z1

Z2

SP4-APS

SW2

Z3 Z4

TB4TB3

AUDIO

TB2

Figure 4: “CLASS B” Zone Connections

IN

EX1

EX2

TROUBLE

TB5

EOLR

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3.2 Other Wiring

3.2.1 Expansion Circuit Wiring

The Expansion Circuits (EX1, EX2) are used to link additional audio booster panels (SPB-160, SPB-80/4, and SPB-320)
through the SP4-APS. The audio zone outputs are either 25Vrms or 70.7Vrms matching the audio input voltage. EX1
and EX2 are current limited outputs. If an over current condition is detected, the affected Expansion Zone(s) will
disable their audio output. When the over current condition has been cleared and the affected Expansion Zone(s) go
back to “Normal” condition, the audio output will be re-enabled. To ensure that current limiting works properly, for
25Vrms JP1 must be open, for 70Vrms JP1 must be closed. SPB-160 and SPB-80/4 enclosures contain one audio
booster module, while the SPB-320 contains two. The SP40/2 has a maximum audio output to the splitter of 40 watts,
while the Audio Boosters have a maximum audio output to the splitter of 80 watts. Each audio booster module
connected to the expansion circuits uses 1.2 watts. There is a limit of 33 Audio Boosters that can be connected to an
SP40/2 using SPB-160 or SPB-80/4 models. Each SPB-320 counts as two SPB-160 models.

The wiring of EX1 and EX2 for “CLASS A” or “CLASS B” is determined by the wiring of the zone outputs and switch
SW2 setting. If SW2 is set for “CLASS A”, then all zone outputs and expansion outputs must be wired for “CLASS A”.
When using the SP4-APS in “CLASS B” configuration, end-of-line resistors (UL Listed 10K Ohm, EOLR) must be
used at the end of each expansion circuit.

3.2.2 24VDC Wiring

The SP4-APS requires 24VDC input in order to operate. Wire the 24VDC from +/- 24VDC connections on the SP40/2
or the DC OUT connections on the applicable audio booster to the +/- 24VDC IN connections on the splitter. If two
SP4-APS are used on an SPB-160 or two are used with each SPB-160 in the SPB-320 audio booster enclosure, wire the
24VDC OUT connections on the first SP4-APS to the +/- 24VDC IN connection on the second splitter. Observe correct
polarity. See Figure 5 for connection locations.

TB1

24 VDC

OUT

IN

JP1

JP1

Shorted = 70Vrms
Open = 25Vrms

POWER TROUBLE

TB2

AUDIO

IN

Figure 5: 24VDC Connections

3.2.3 AUDIO IN wiring

The SP4-APS AUDIO IN uses the Audio Out from the SP40/2 or an audio booster, which is either 25Vrms or

70.7Vrms. The total audio output from all zones on the SP4-APS must not exceed its audio input power. See Table 2.
See Figure 2 for the location of the AUDIO IN. The SP4-APS uses 8 watts of audio power to operate (1.35 watts per
zone.)

Table 2: Maximum Audio Input Power to the Splitter from SP4 Products

SafePath4 Product Max number

of SP4-APS

SP40/2 1 No 40W

SPB-80/4 1 Yes (1) 80W

SPB-160 2 Yes (1) 80W

SPB-320 4 Yes (2) 80W

Requires SPMB4Z

(Purchased Separately)

Max Audio Power for

Each SP4-APS

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4.0 USING THE SP4-APS WITH THE SP40/2

One SP4-APS can be connected to the SP40/2 panel. It is to be mounted inside the panel enclosure onto the backplane in the
upper right hand corner.

4.1 MOUNTING INSTRUCTIONS: (SP40/2)

Figure 6 shows the mounting location of the SP4-APS Splitter to the backplane of the SP40/2 panel. Figure 7 shows the
correct mounting procedure.

SP4-APS
MOUNTING STUDS

RIGHT
SIDE

TOP

MOUNTING SCREW (4)

SP4-APS COVER

COVER STANDOFFS (4)

SP4-APS PC BOARD

MOUNTING STUDS

SP40/2 BACKPLANE

INDICATIONS

When the GREEN "AC" light is ON, the system is energized.
When the YELLOW "TROUBLE" light is ON, there is a fault in the system
which MUST BE CORRECTED.
When the RED "STROBE" light is ON,, the strobe circuit is active.

WARNING

IF THE YELLOW "TROUBLE" LIGHT IS ON, THIS UNIT MAY NOT BE ABLE TO PROVIDE EMERGENCY
MESSAGE ANNOUNCEMENT CAPABILITIES AND COULD RESULT IN PROPERTY DAMAGE, SERIOUS INJURY,
OR DEATH TO YOU AND/OR OTHERS. IN THE EVENT THE "TROUBLE" LIGHT IS ON, YOU SHOULD
CONTACT YOUR SERVICE REPRESENTATIVE IMMEDIATELY.

MICROPHONE OPERATION

1. Hold the microphone within two inches of the mouth and pr ess the
push-to-talk switch on t he microphone.

2. Deliver the message. Activation of the microphone will deliver the message
to all circuits.

FOR ADDITIONAL INFORMATION

REFER TO THE OPERATION AND INSTALLATION MANUAL.

BEFORE REMOVING THIS PANEL.

CAUTION

DO NOT ATTEMPT TO REMOVE OR REPLACE
MODULAR PC BOARDS INSIDE WITHOUT
DISCONNECTING ALL POWER SOUR CES TO
THIS UNIT FIRST. FAILURE TO DO SO MAY
RESULT IN DAMAGE TO THE PC BOARDS.

DISCONNECTING -

FIRST DISCONNECT
BATTERY POWER AT BATTERY TERMINALS
THEN DISCONNECT AC POWER AT THE
POWER SOURCE.

RECONNECTING -

FIRST RECONNECT AC
POWER AT THE POWER SOURCE. THEN
RECONNECT BATTERY POWER AT THE BATTERY
TERMINALS.

STATUS

AC

ALARM

TROUBLE

AUDIBLE
TROUBLE
SILENCE

+ -

BGM

VOLUME

Figure 6: Figure 7:

SP4-APS Mounting Location in SP40/2 Enclosure SP4-APS Mounting in SP40/2 Enclosure

1. Position the SP4-APS PC board so that the side with most of the terminal blocks are pointing to the top of the

SP40/2 enclosure and the writing on the PC board can be read. Align the mounting holes on the SP4-APS PC board
with the backplane mounting studs.

2. Using the supplied screws, studs, and standoffs, screw the male end of the 4 cover standoffs through the SP4-APS

PC board and to the 4 mounting studs on the SP40/2 backplane. Tighten all standoffs snug plus 1/4 turn.

3. Attach wiring in accordance with this section and Figure 7.

4. Align the SP4-APS cover with the holes in the cover standoffs and mount the cover using the 4 mounting screws.

Tighten the screws hand tight.

The CC (Contact Closure) Mode Wiring is used when the SP40/2 and Audio boosters are used or when a single SP40/2 is
used with one SP4-APS. The Alarm In and Out terminals on the SP4-APS are supervised. If multiple splitters are used,

ONLY the SP4-APS connected to the SP40/2 is configured for CC Multi-mode.

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