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Fireswitch applications: 1. general information, Class a and class b hookups, Testing and maintenance (cont’d.) – Altronix FireSwitch108 Installation Instructions User Manual

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- 12 - FireSwitch108

FireSwitch Applications:

1. General Information:

Altronix FireSwitch units are very versatile devices. They can be used with or without specific synchronization

modules provided by some manufacturers. Multiple units can be synchronized by using either the built-in sync mode or
a external synchronization module. Please note, that only notification appliances with synchronization capabilities can be
synchronized. Contact signal manufacturer for more detailed information. Units can operate with either one (1) or two
(2) outputs from the FACP.

2. Class A and Class B Hookups:

Units can be used with the outputs configured for:

• Four (4) Class A (Fig. 6 ).

• Up to eight (8) Class B.

• Combination of Class A and Class B outputs (Fig. 7).

Two (2) Class A

Hookups

From

FACP NAC1

Return

to FACP

From

FACP NAC2

Return

to FACP

INP1

RET1

INP2

RET2

OUT1 OUT2

OUT3

OUT4

NEGA

TIV

E

POSITIV

E

One (1) Class A

two (2) Class B Hookups

NEGA

TIV

E

POSITIV

E

INP1

RET1

INP2

RET2

OUT1 OUT2

OUT3

OUT4

OUT5

OUT6

OUT7

OUT8

10K

EOL

10K

EOL

Fig. 6

Fig. 7

NAC Loop

Starts On

Terminates On

1

OUT 1

OUT 2

2

OUT 3

OUT 4

3

OUT 5

OUT 6

4

OUT 7

OUT 8

Please make sure corresponding outputs are
programmed appropriately.

Combination of two (2) Class B and one (1) Class A circuit.

Testing and Maintenance (cont’d.):

Test operation of unit as follows:
Ground fault test: Directly short one leg of the circuit to chassis ground. The ground fault and trouble fault
should be indicated.
NAC open circuit test: Remove the EOL resistor from the last device on the circuit. Open trouble should be indicated.
NAC short circuit test: Place a short across each NAC output individually. NAC short should be indicated.
Disconnect Battery: BAT trouble should be indicated.
Reset Trouble Memory.