Bosch Evax 25, Evax 200, Evax 50, Evax 100, Evax 150 User Manual

EVAX 25 / EVAX 50 / EVAX 100 / EVAX 150 / EVAX 200

VOICE EVACUATION INTERFACE SYSTEM

INSTALLATION INSTRUCTIONS

The EVAX 25 / EVAX 50 / EVAX 100 is a self contained amplifier, tone generator, digital message repeater and supervisory interface. It is
designed to be used in conjunction with a UL listed Fire Alarm Control Panel (FACP) to provide a Listed Voice Evacuation Alarm System.

The FACP provides all initiating circuitry and a signaling circuit to the EVAX 25 / 50 / 100. The EVAX 25 / 50 / 100 provides its own internal
supervision as well as supervision for its speaker lines. Any fault is reported back to the FACP. In normal standby the supervisory circuit from
the panel is connected to a matching EOLR. Should the EVAX 25 / 50 / 100 suffer an internal failure or should there be any fault on the
speaker line a contact would open and the FACP would report it as an open fault for that circuit.

The EVAX 25 / 50 / 100 is designed to be powered from 120 VAC at 60 Hz. The EVAX 25 will provide 25W to the speaker circuit. The EVAX
50 will provide 50W. The EVAX 100 will provide 100W. Speakers may be 25 or 70 Vrms (jumper selected, 25V is factory set).

MODELS

The EVX-25 / 50 / 100 are complete Voice Evacuation Modules, EVX-25E / 50E / 100E are complete modules with built-in tone
generators capable of operating as a stand-alone Voice Evacuation Systems with only tone and microphone amplification. They are not
equipped with power transformers or cabinets. The EVAX 25 / 25E / 50 / 50E / 100 / 100E / 150 / 150E / 200 / 200E are complete Voice
Evacuation Panels. The EVX-50E / 100E are capable of operating as slave amplifiers when connected to the EVX-100 / 100E, which
supplies source audio to the slaves. Different Model numbers are derived from the amplifier sizes used together: These multiple amplifier
configurations are factory setup and pre-wired. When using any EVX 25E / 50E / 100E refer to installation instructions P/N B-5002 Rev. E.

EVAX 150
EVAX 200
EVAX 150E
EVAX 200E

INSTALLATION

Installer must insure that all wiring and devices installed in system meet the following standards:
National Electrical Code (NFPA 70)
NFPA Standard 72
Life Safety Code (NFPA 101)

Install equipment in a clean, dry environment, avoid installation where equipment could be subjected to vibration. Remove electronic
assemblies from the enclosure prior to any drilling or punching of the enclosure. Where possible, make all cable entries from the rear or
sides. Before making any modifications to the enclosure, be certain that they will not interfere with assemblies or batteries

Install equipment adjacent to FACP or FACP Annunciator to insure proper reporting and display of system Fault conditions..

WIRING (Refer to wiring and terminal designation diagrams)

1. Connect speaker lines to TB1 - 5(+) & 6(-), observe polarity and insure all speakers are connected likewise. For Class "A" (Style "Z")the
returns are TB1 - 7(-) & 8(+).

2 . Insure that the microphone is attached to connector P2. If Microphone is not installed insure that switch SN2 - 8 is in the OFF position.

3. Attach the appropriate EOLR for the FACP to TB3 - 3 & 4 and TB3 - 5 & 6. The TB3 term 5 & 6 value must be placed at the end of the
speaker line as well. You must use EOLR value as specified in the FACP manufactures installation instructions for the indicating appliance
circuit. Note: if your system includes one or more EVX-4Z zone splitters, the FACP EOLR is relocated. See EVX-4Z install instructions P/N
1-5022.

Contains 1) EVX-100
Contains 1) EVX-100
Contains 1) EVX-100E
Contains 2) EVX-100E

And 1) EVX-50E
And 1) EVX-100E
And 1) EVX-50E

2) Speaker Circuits

2) Speaker Circuits

2) Speaker Circuits

2) Speaker Circuits

4. Connect FACP signaling circuit to TB1 - 3(+) & 4(-), Alarm Polarity (alarm polarity is shown).

5. Connect 120 VAC, 60 Hz, power to the black and white pigtail leads from transformer primary. Secure ground lead to grounding stud in
cabinet.

6. Once power is on to the unit, connect battery wiring harness, Red (+) / Black (-). Observe polarity. Minimum battery size is 24V 7Ah.
Maximum battery size is 18Ah on EVAX 25 / EVAX 50 and 24Ah on EVAX 100. (use two (2) 12V batteries connected in series, see typical
installation diagram). If the unit does not have its own batteries and relies on an external power supply with battery back-up, insure that
switch SN2 - 7 is in the OFF position. NOTE: Wiring for batteries is Non Power-Limited. Care must be taken to insure that all Power-Limited
wiring maintain a minimum spacing of ¼" from any Non Power-Limited wiring. If batteries must be located in separate enclosure, provide
separate conduit run for battery wiring only.

Once all power and circuits are connected, the Green LED will remain on to indicate that the EVAX 25 / EVAX 50 / EVAX 100 is fully
operational and all circuits are nominal.

130 Perinton Parkway, Fairport, NY 11450

P/N B-5001 REV. E

Page 1 of 8

Customer Service: [phone]
Technical Support: [phone]

EVAX 25 / EVAX 50 / EVAX 100

TERMINAL DESIGNATIONS

TB1:
TER 1 & 2 - Power Input 24-32V AC/DC (NOTE 1, 4)
TER 3 & 4 - FACP Signal Circuit Input - 10mA max. (Alarm Polarity shown) (NOTE 1, 4)
TER 5 & 6 - 25/70 Vrms Speaker Loop Style Y/Z (Class “A”/”B” start) (NOTE 2, 4)
TER 7 & 8 - 25/70 Vrms Speaker Loop Style Z (Class “A” return) (NOTE 2, 4)

TB3:
TER 1 & 2 (NOTE 1, 4)

Optional FACP Supervisory Circuit
(See installation instructions page 5
diagram 2 for details (32V - 0.4A
max.)). Factory set for none - J1
(Installed)

TER 3 & 4

FACP Signal/Supervisory Circuit
EOLR

TER 5 & 6

Matching EOLR for speaker
supervisory circuit

TER 7 (NOTE 1, 3, 5)
General purpose output (pulls to
circuit neg on fault condition
32V - 0.2A max). Not for Fire
Protective Signaling use.

TER 8 (NOTE 1, 3,5)
Trouble input +24 VDC 5mA

NOTES:
1 - Intended for connection to Listed
Class 2 / Class 3 (Power Limited)
sources only.
2 - Power Limited
3 - Non-Supervised
4 - Supervised
5 - Terminating equipment must be
installed in same room as

EVAX25 / EVAX 50 / EVAX 100.

TB1

1 2 3

TB3

1
2

3
4

YEL

5
6

GRN

7
8

RED

YEL

GROUND

MSG

FAULT

GAIN

S1

Switch Network Detail

4

1

2

MIC

GAIN

J1

FAULT

NORMAL

ALARM

SN2 SN1

5 6 7 8

J2

1 2 3

70V 25V

1 8

OFF

ON

Field wiring connections:

#6-32 wire clamp screw 14-18 AWG
#8-32 wire clamp screw 12-18 AWG

Horizontal wire entry terminal 18-26 AWG

Wire gauge determined by circuit load

Tb2:
TER 1 - Circuit Neg

TER 2 (NOTE 1, 3)

Aux Audio Input
(0.5V nominal)
(1VRMS - 1mA max.)

TER 3 (NOTE 1, 3, 5)

9

PreAmp In/Out

8

(600 Ohm 0dBm)

7
6

TER 4 (NOTE 1, 3, 5)

5

Master - Programmable

4

+24VDC Active

3

Slave - +24VDC Input

2
1

TER 5 (NOTE 1, 3, 5)
Signal Active
Master - Out / Slave - In

TER 6 (NOTE 1, 3)
Aux Audio Enable
(+24V)(32V - 5mA max.)

TER 7 (NOTE 1, 3)
Aux Signal Activate
(+24V) (32V - 5mA max.)

TER 8 (NOTE 2, 3, 5)
Common Alarm Voltage +24V
condition (0.1A)

TER 9 (NOTE 2, 3)
Common Int V+ (+24V)
disconnected in alarm
condition (0.1A)

TER 10 (NOTE 2, 3)
V+ (+24V 0.1A)

TER 11 (NOTE 5)
Mic PTT (+24V 0.1A)

1
2

U6

J5

TB2

11
10

P2

FACTORY DEFAULT SWITCH / JUMPER SETTINGS:

SN1

1 = OFF 8 sec. initial delay
2 = ON
3 = OFF
4 = ON 8 sec. repeat delay
5 = OFF
6 = ON Message On
7 = OFF 3 Repeats
8 = ON

SN2
1 = OFF Temporal Whoop Signal
2 = OFF
3 = OFF
4 = Fault Code Lock
5 = X Do not use
6 = AC Fault Delay
7 = ON Battery connected
8 = ON Mic connected

P/N B-5001 REV. E

Page 2 of 8

J1 A/B
1 - 2 = SHORT

J2
25 VRMS 2-3 = SHORT
70 VRMS 1-2 = SHORT

To change output voltage
move shorting block.

J5
1 + 2 SHORT = Ground Fault Enable

130 Perinton Parkway, Fairport, NY 11450
Customer Service: [phone]
Technical Support: [phone]

OPTIONS:

AUX +24VDC OUTPUT - TB2-4, 8, 9 & 10
These terminals provide a max. 200 mA of regulated 24VDC power for auxiliary functions. Do not exceed 200 mA load combined on
these terminals. For connection to Listed General Signal devices only (Non-Fire Protective Signaling applications). Terminal 4
activation is programmed in the U6 EPROM chip. Standard chips are programmed for TB2-4 to go active +24VDC under these
conditions: Aux Signal Active, Aux Audio Enable, Bell Circuit Active, RSI Active. Reprogramming of these functions must be done at
the factory and require replacing EPROM U6.

CONNECTION OF AN AUX AUDIO SOURCE - TB2-1 & 2
An aux audio source from additional paging equipment may be connected to the EVAX 25 / 50 / 100 to augment an existing paging
system. It is not intended for continuous signal input, but may be used for paging applications. For such an operation the Aux Audio
Enable input, TB2-6, must be powered from Int V+, TB2-9. This is to insure that in the event of an alarm, the aux audio will not
override the evacuation signal. See Wiring Diagram 5 for connection detail.

OPTIONAL SUPERVISORY CIRCUIT - TB3-1 & 2
In place of normal supervision via the signaling circuit, an alternate method may be employed using any supervisory circuit from the
FACP. Connection would be made to Terminal Block 3, Ter. 1 and 2. This would provide a normally closed connection to the EOLR
on Ter. 3 and 4. The relay contact in the circuit will open upon any trouble condition and report an open circuit trouble to the FACP.
NOTE, jumper shorting blocks A and B must be removed from J1 if a circuit is to be connected in this manner. See Optional
Supervisory Circuit Application (Wiring Diagram 2) for connection detail.

OPERATION

In normal standby the Green LED will remain on.
In alarm condition the Red LED will remain on as long as the unit is in alarm. Green LED will modulate with the audio level.
Default Factory Alarm Sequence settings: (Alarm Tone - 2 cycles Temporal Whoop, Message On - 3 Repeats)
Alarm Tone / Digital Message plays / Alarm Tone / Digital Message plays / Alarm Tone / Digital Message plays / unit reverts to
Alarm Tone until alarm condition is cleared. If the Mic is keyed it will override both the tone and the message so a direct broadcast
may be made. If this occurs during the initial sequence the digital message will be reset and will not repeat. When the Mic is keyed
or when the message is played the Green LED will dim. The intensity of the Green LED will vary with the level of the broadcast
audio. Under a fault condition, the Yellow LED will remain on. The Green LED will flash. The number of flashes display a code
depending on the specific type of fault. When there is a fault condition the contact connecting the FACP signal circuit to the EOLR
will open indicating the fault to the panel which will provide annunciation. During a ground fault condition, Yellow LED 4 will
illuminate.

ELECTRICAL RATINGS:

EVAX 25 / 25E

Primary Input Voltage
Primary Input Current

120 Vac @ 60 Hz

0.8 A @ 120 Vac

EVAX 50 / 50E

120 Vac @ 60 Hz

0.5 A @ 120 Vac

EVAX 100 / 100E

120 Vac @ 60 Hz

1.0 A @ 120 Vac

*Battery Input Current Standby
Battery Input Current Alarm

0.18 A / 1.1 A

1.1 A / 2.5 A

0.15 A / 1.0 A

0.8 A / 1.1A

0.16 A / 1.1 A

0.6 A / 2.0 A

Output power
Freq. Response
Output Voltage

25 Watt
800 - 2800 Hz
25 / 70 Vrms Selectable

50 Watt
400 - 4000 Hz
25 / 70 Vrms Selectable

100 Watt
400 - 4000 Hz
25 / 70 Vrms Selectable

**Optional 24 VDC input

Battery Charging Current
Minimum Battery Size
Maximum Battery Size
Battery Type

1.3 A Standby

2.6 A Alarm

4.2 A Sine

800mA
24V 7 AH
24V 18 AH
(2) 12V Gel Cell (in Series)

1.0 A Standby

1.3 A Alarm

5.3 A Sine

800mA
24V 7 AH
24V 18 AH
(2) 12V Gel Cell (in Series)

1.6 A Standby

2.6 A Alarm

8.9 A Sine

800mA
24V 7 AH
24V 24 AH
(2) 12V Gel Cell (in Series)

Battery Standby Operating Time: 24 - 60 Hours standby, 15 Minutes in Alarm
Output Protection: Power Limited, Open and Short Circuit protected

*Battery input current measurements are determined by test conditions. Two values are shown. First value reflects the unit with a full speaker load and no auxiliary load.
Second value reflects the unit with a full speaker load and a full auxiliary load of 0.5A in Standby and 0.75A in Alarm. Your actual load will vary depending on which and
how many auxiliary devices, ie...Zone Splitter, Remote Mic, Relays,...etc., are used. Insure that any current draw from an aux device is added into your final battery
calculation.

**Input current measurements are determined by test conditions under UL 1711. Sine represents measurements made while the unit produces a continuous non-distorted
sine wave of 1 KHz into the rated load of 25 / 50 / 100W at rated output voltage. Alarm is the average current the unit experiences delivering an alarm signal, Temporal
Whoop, to the rated load. Standby is the current draw of the unit with all normal power on and aux., terminals fully loaded. Battery Standby is current draw from the
batteries on loss of power and otherwise normal standby.

TESTING

Per NFPA 72 Chapter 7, 100% system test is required, at a minimum, annually. Additional testing may be required by the Local
Jurisdiction.

P/N B-5001 REV. E

Page 3 of 8

130 Perinton Parkway, Fairport, NY 11450
Customer Service: [phone]
Technical Support: [phone]