Honeywell 6820EVS Installation And Optimization Manual page 136

Model 6820 / 6820-EVS Installation Manual
Table 9-1 list the detector characteristics and a description of each.
Type of Delay Description
One Count (No Delay). When this option is enabled, an alarm occurs immediately when a
single device of any of the following types goes into alarm: detector, manual pull, water flow,
1-Count
Zone Aux1 or Zone Aux2. This is considered the most typical operation and is the default
for all zones.
When this type of alarm delay is used, two or more detectors within the zone must go into
alarm in order for the zone to report an alarm. Switches of type manual pull, Detector
Switch, water flow, Zone Aux1 and Zone Aux2 are an exception; they will cause an alarm
when only one switch is in alarm.
When a single detector is in alarm in a 2-Count zone, the system enters a prealarm
condition. In a prealarm condition, the touchpad PZT beeps and the annunciator display
2-Count
indicates that a prealarm has occurred. If the zone has been mapped to an output group for
the prealarm event, the output group will activate. The prealarm will not be reported to the
central station.
When two count is used, detector spacing shall be cut in half. You should, not use the alarm
verification feature, and no delay shall be used.
Alarm verification is an optional false alarm prevention feature that verifies an alarm
condition by resetting the smoke detector. If the alarm condition still exists by the time the
reset cycle has completed, the detector will go into alarm. If the detector is no longer in
Alarm Verification
alarm, no report will go to the central station. The alarm verification sequence is ignored if
the zone is already in alarm.
This option is intended to be used with an acknowledge switch. An alarm is delayed for 15
seconds, giving on-site personnel a chance to investigate the alarm. If the acknowledge
switch is not activated within 15 seconds, an alarm occurs automatically.
If this option is enabled for a zone, the zone will respond to an alarm condition as follows:
P.A.S.- Positive Alarm
Sequence
Single Interlock See Section 10.7.1 for single interlock releasing operation.
Double Interlock See Section 10.7.2 for double interlock releasing operation.
Note: SK-Fire-CO and other CO detectors can only be installed in a 1 count zone.
Heat Temperature Setting
Use this feature to set the temperature at which high temperature detectors will respond.All detectors in the zone
will respond in the same way.The range for SK-Heat-HT heat detector is from 135°F to 190°F and the range for
SD505-HEAT is 135°to 150°F.
The high temperature SK heat detectors are absolute temperature devices. This means that they respond to an
alarm immediately if the temperature in the zone goes above the programmed temperature.
3. Enter the temperature at which the heat detector will respond, or use the up or down arrow key to scroll
through the range, or enter directly from the number keys on the annunciator, then press ENTER.
Table 9-1: Alarm Detector Characteristics
• The zone will not go into alarm for 15 seconds to allow an on-site operator to activate
the acknowledge switch.
• If the operator does not press the acknowledge switch within 15 seconds, the zone will
go into alarm.
• If the operator presses the acknowledge switch within 15 seconds, a 180-second time-
frame will begin counting down. This time-frame allows the operator to investigate the
cause of the alarm.
If the operator performs a reset within 180 seconds, the alarm will not occur. If the
operator does not perform a reset within 180 seconds, an alarm will occur automati-
cally.
• The P.A.S. feature will be overridden if another alarm occurs.
9-5
LS10144-001SK-E