
33
Smoke Verification
Enable Verification: Smoke verification in the panel is handled as follows:
1) Smoke verification works with on-board hardwire and the 2-wire smoke loop only.
2) All HWB416, RF, and keypad smoke zones do not use smoke verification, they will
activate a smoke alarm after the first trip.
3) While a smoke verification sequence is active, the smoke reset function is locked
out.
4) For zones that can use smoke verification, no audible notification is given for the
first
trip. If the zone is set to show open/close, this will show up as an open only.
5) Smoke verification must be enabled with option 001 in location 0250. It is disabled
with 000 by default.
Smoke reset sequence: Upon the trip of an on-board or 2-wire smoke zone, the smoke power relay activates
and drops smoke power. The relay will remain off for the period in seconds that is
programmed in location 0251. A value of 000 is treated as 256 seconds. The default is
005 (5)seconds. During this period, all on-board and 2-wire smoke zone trips are ignored.
Location 0251 must be 010 (10 seconds) for a UL installation.
After the power off delay is completed, the panel will restore smoke power and start a
settling delay. The period of this delay is determined by the value in seconds that is
programmed in location 0252. The default value is 010 (10)seconds. During this period,
all on-board and 2-wire smoke zone trips are ignored. Location 0252 must be 025 (25
seconds) for a UL installation.
After the settling delay completes, the panel begins a window delay and starts
watching for another on-board or 2-wire smoke zone trip. The period of this window is
determined by the value in seconds programmed in location 0253. The default value is
120 seconds. Location 0253 must be 120 (120 seconds) for a UL installation.
Any trip during the window period results in a smoke alarm activation. Note that this
activation need not be from the same zone that started the smoke verification sequence;
any other on-board or 2-wire smoke zone that trips during the window delay will cause
a smoke alarm activation. This is a fail-safe so that if the initial detector that started the
smoke verification sequence has been damaged, some other detector will hopefully be
tripped.
Once the smoke verification sequence starts a smoke alarm, all delays are cancelled
and the sequence begins again for the next on-board or 2-wire smoke zone trip.
It should be noted that since smoke verification only applies to on-board and 2-wire
smoke zones, smoke zones from any other source will immediately trip a smoke alarm
and cancel the smoke verification sequence.
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