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DEPENDENCY MODES

Dependency modes are features described in EN54-4 for the processing of confirmation alarms. It is a

requirement by some monitoring stations and local fire authorities in order to reduce the possibility of false

alarms.

The QuickZone XL has 3 dependency mode options, A, B & C. Only one type can be applied to the panel but

any or all zones can be independently set for dependency mode.

The panel is set to dependency mode A by default.

Dependency ‘A’ will apply the following sequence:

1. The first detector alarm is inhibited.

2. The panel resets and re-checks the inhibited zone within 15-30 seconds.

3. If an alarm is detected then the panel activates a full fire condition.

4. If no alarm is detected, the panel stays in an alert condition for 30 minutes. Any new alarm from the same

zone within this time activates a full fire condition.

5. After 30 minutes or if RESET, the panel reverts to step 1.

Note: 220Ω ‘Evacuate’ call points should be used on such zones to provide an instant un-delayed alarm. A

470Ω call point will be included in the dependency delay sequence.

Dependency ‘B’ will apply the following sequence:

1. The first detector alarm will indicate at the control panel but not activate the sounders.

2. The panel resets and re-checks the inhibited zone within 1 - 4 minutes (programmable, see code 2-1-3-4)

3. If an alarm is detected then the panel activates a full fire condition.

4. If no alarm is detected, the panel stays in an alert condition for 5 - 30 minutes (programmable, see code 2-

1-3-4)

. Any new alarm from the same or a different zone within this time activates a full fire condition.

5. After the time set above or if RESET, the panel reverts to step 1.

Note: 220Ω ‘Evacuate’ call points should be used on such zones to provide an instant un-delayed alarm.

A 470Ω call point will be included in the dependency delay sequence.

Dependency ‘C’ will apply the following sequence:

1. The first detector or 470Ω call point alarm will indicate at the control panel but not activate the sounders.

2. The panel will not activate a full fire condition unless a second detector or 470Ω call point is activated in the

same or any other zone.

Note: A 220Ω ‘Evacuate’ call point can be used on such zones to provide an instant un-delayed alarm.

Advanced Quick Zone XL User Manual

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