1: Single Interlock Zone Releasing; 2: Double Interlock Zone Releasing - Honeywell Silent Knight SK318PT Installation And Operation Manual

10.7.1 Single Interlock Zone Releasing
A single interlock zone utilizes a minimum of two addressable detectors and a designated manual release switch.

Conditions Required for an Pre-Alarm Output Activation
If any single addressable detector is activated, the "Pre-Alarm" output will activate. This alerts the user that the initial stages required for
a release condition are present. (Also refer to Table 10.4.)

Conditions required for an General Alarm and Release Output Activation
If two or more addressable detectors, or a manual release switch activate, the "Alarm" and the "Release" outputs will activate and the
"Pre-Alarm" output will deactivate. (Also refer to Table 10.4.)
1st Addressable Detector
2nd Addressable Detector
Manual Release Station
10.7.2 Double Interlock Zone Releasing
A Double Interlock Zone uses a minimum of two addressable detectors, a designated manual release switch, and an interlock switch
input. An interlock switch is typically a dry-contact pressure switch and will be referred to as an interlock/pressure switch in this docu-
ment.
Only addressable detectors can be used. No conventional detectors can be used.
Each Double Interlock Zone input requires at least one Interlock/pressure switch and at least one manual release switch.

Conditions Required for a Pre-Alarm Output Activation
If any single addressable detector is activated, the "Pre-Alarm" output will activate. This alerts the user that the initial stages required for
a release condition are present. (Also refer to Table 10.4.)

Conditions Required for a General Alarm Output Activation
If two addressable detectors, a manual release switch is activated, or an interlock switch is active, the "Pre-Alarm", and "General Alarm"
outputs will activate.
6820 / 6820EVS Manual P/N LS10144-001SK-E:C 09/28/2017
Only addressable detectors can be used. No conventional detectors can be used.
Each Single Interlock Zone input requires at least one manual release switch.
Inputs
Table 10.4 : Single Interlock Zone Operation
Important!
Output Results
x x
x x
Important!
x
x
x x x
x
x
x
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