ADEMCO Symphony 8142 Setup Guide download pdf (Page 15)

Mounting and Wiring the Control

2-9

Smoke Detectors

4-Wire Smoke Detectors

Connect 4-wire smoke detectors (up to 16,

depending on detector current drain) to any

zone from 2-8 as shown on the next page. This

control does not automatically reset power to

4-wire smoke detector zones, so you must use a

relay (e.g., 4204, 4229), or on-board trigger 17

to reset power (also required for fire

verification). Do this by programming the

designated relay/trigger as zone type 54 (fire

zone reset); see On-Board Trigger section for

other information.

Notes

•

••

• Fire Verification (zone type 16): The control

panel will “verify” a fire alarm by resetting the

smoke detectors after the first alarm trigger,

and then waiting 90 seconds for a second

alarm trigger. If the smoke detector does not

trigger again, the control will disregard the

first trigger, and no alarm signal will occur.

This feature eliminates false alarms from

smoke detectors due to electrical or physical

transients.

• Maximum current for trigger 17 output for 4-

wire smoke detectors is 300mA.

Figure 6. 4-Wire Smoke Detector Connections

+

+

2000

OHMS

EOLR

HEAT

DETECTOR

RED

EOL

POWER

SUPERVISION

RELAY MODULE

A77-716B.

USE N.O.

CONTACT,

WHICH CLOSES

WHEN POWER

IS APPLIED.

VIOLET

AUX PWR

OUTPUT

TERMINALS

5

4

+

BLK

+

4_wiresmk-007-V0

TO ZONE TERM. ( )

TO ZONE TERM. ( )

RELAY

CONTACT OPENS

MOMENTARILY UPON

FIRE ALARM RESET

PROGRAM

RELAY

AS ZONE

TYPE 54

(FIRE ZONE

RESET)

4-WIRE SMOKE

OR COMBUSTION

DETECTOR

N.C.

N.O.

4-Wire Smoke Detector Using Relay for Power Reset

+

2000

OHMS

EOLR

HEAT

DETECTOR

RED

VIOLET

AUX PWR

5

+

BLK

+

4_wiresmk-008-V0

4-WIRE SMOKE

OR COMBUSTION

DETECTOR

( )

( )

+

TO ZONE TERM. ( )

TO ZONE TERM. ( )

TO OUTPUT 17

PROGRAM OUTPUT 17

FOR "OUT NORM

LOW" = YES IN 79 MENU

MODE AND AS ZONE

TYPE 54 IN

80 MENU MODE

EOL

POWER

SUPERVISION

RELAY MODULE

A77-716B.

USE N.O.

CONTACT,

WHICH CLOSES

WHEN POWER

IS APPLIED.

N.O.

4-Wire Smoke Detector Using Output 17 for Power Reset

1 2 ... 10 11 12 13 14 15 16 17 18 19 20 ... 111 112

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