15
When non-latching.
It is possible that a short increase of humidity, dust or rise in temperature, nearby the detector occurs.
This can result in a fire alarm that only disappears when the reset button on the panel is physically
pressed. Normally somebody will go to the fire panel and press the reset button and with that restore
the false alarm. But not in all the cases is that easy and handy. Then the use of the non-latching
feature can be a solution. Be careful with using and applying the non-latching solution.
WARNING
Non-latching feature is ONLY applicable at the Fenwal heat detectors, some cable heat detection
systems, and the Apollo optical smoke detector type ORB-OP-02032-APO.
8.5
S
INGLE OR DUAL FIRE ALARM
Normally we work in dual fire zone mode. In some cases, a single mode
status can be handy. A single or dual fire alarm triggers the fire relay, LEDs,
and fire-extinguisher. Single or dual mode is configurable with one
dipswitch. Any detection zone alarm will operate audible and visual
indications as follow.
In dual (standard) mode the extinguisher(s) will be released after both detection zones will have a fire
alarm condition and cause an internal pulsing alarm sound. The fire relay and extinguisher are
activated according to the dip-switch settings. In single mode the extinguisher(s) will be released
when one detection zone is in fire alarm condition and cause an internal pulsing alarm sound. The
fire relay and extinguisher are activated according to the dip-switch settings.
8.6
D
IRECT RELEASE
When the timer settings are set to a delay (between 10
–
30 seconds), the
direct extinguish dipswitch gives the choose to override the delay in case of
a fire event. If a fire alarm is detected, by the automatic fire detectors of
the µ-FEP and the count-down timer is started, you can override the timer.
By pressing the dual release extinguishing buttons on the front of the panel
or the external release extinguishing button, the extinguishing releasing
process starts without delay immediately.
8.7
N
O AUTOMATIC RELEASE
In this state, only pressing the extinguishing release buttons on the device or the external release
button can (immediately) release the fire-extinguisher. In this case, FIRE alarms from the detector
zones will only trigger the FIRE indications and fire output relays (and not
release the fire-extinguishers). The TIME-SWITCH dipswitches can also be
used to set the device in No-AUTO release state. In this state, only pressing
the fire-buttons on the device or the external extinguishing release button
can (immediately) release the fire-extinguisher. In this case the fire alarm
from the detector zones will only trigger the fire alarm leds and relays (but
will not activate the fire-extinguishers).
ON
OFF
1
2
3
4
5
6
7
8
ONLY MANUAL RELEASE
ON
OFF
1
2
3
4
5
6
7
8
AUTO AND MANUAL RELEASE
ON
OFF
1
2
3
4
5
6
7
8
DIRECT RELEASE
ON
OFF
1
2
3
4
5
6
7
8
NO DIRECT RELEASE
ON
OFF
1
2
3
4
5
6
7
8
SINGLE MODE
ON
OFF
1
2
3
4
5
6
7
8
DUAL MODE
