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Section 18: Fire Zone Types
This section explains all Fire zones that can be programmed on the PC4020 and all zone expansion modules. Fire zone programming is the same
as burglary zone programming. Instructions on zone programming are located in Section 5 “Partitions and Zones.”
NOTE: Do not turn off the “Audible” zone attribute for fire zones.
NOTE: 2-wire smoke detectors cannot be used on panel or expansion zones. 2-wire smokes can only be connected to the dedicated 2-wire smoke zone on
the PC4701.
18.1 Partitions and Fire System Configuration
A fire system within a single building must not be partitioned
such that audible or visual alarm notification appliances would
operate in one partition and not another.
Even though the system may be partitioned for security control
purposes, any fire zone on any partition in the building must acti
-
vate all fire alarm notification appliances in all system partitions.
The PC4020 provides two methods for achieving these results.
Fire Configuration 1
• Assign all fire zones to one partition. Do not program fire
zones as ‘silent’.
• Assign all PC4702 Bell zones to the same Partition as the fire
zones.
• Assign at least one fire keypad to the same partition as the fire
zones.
• Zones on the PC4701 module are always global and do not
require partition assignment.
• Other types of zones may also be assigned to this partition
without affecting the fire operation as described below.
Operation
On alarm, from any fire zone in this partition, the fire auto-scroll
display will only show on keypads assigned to the fire partition
and on any system global keypads.
The waterflow and 2-wire smoke zones on the PC4701 module
will show, in the auto-scroll mode, on all partition and global key
-
pads. If a zone on the PC4701 is in alarm, then fire silence and
reset can be done from any partition keypad.
If the alarm is from a partition zone (not PC4701) then fire alarm
silence and reset can only be done directly on the fire partition
keypad(s). To silence from other partition keypads or a global
keypad requires that the keypad be loaned to the fire partition.
Fire Configuration 2 (Recommended)
• Assign ALL fire zones to ALL active partitions in the system.
Do not program fire zones as ‘silent’.
• PC4702 Bell zones automatically respond to any fire zone in
the system and can be assigned to any partition.
• Zones on the PC4701 module are always global and do not
require partition assignment.
• One or more fire keypads may be located on any partition.
Operation
On alarm, the fire auto-scroll display will show on all partition
keypads and on all global keypads.
Fire alarm silence and fire system reset may be done directly on
any partition keypad. To silence from a global keypad requires
that the global keypad be loaned to one of the partitions.
NOTE: Assign command output 2 (sensor reset) to all partitions.
18.2 Standard Fire Zone
All 128 zones can be programmed as Standard Fire zones. This
zone is always an end-of-line resistor type with normally open
alarm contacts from the alarm initiating device(s). Multiple
devices may be connected in parallel on a single zone.
The zone wiring is supervised by the control panel for:
• Short Circuit: Fire Alarm
• Open Circuit: loss of the end-of-line resistor and will be indi-
cated as a Zone Trouble
• Ground Fault: resistance < 40k to earth ground indicated as
a Common Ground Fault Trouble.
Typical Fire Devices used on this zone type are:
• Heat Detectors – Fixed Temperature and/or Rate-of-Rise
• Manual pull stations
• 4-wire smoke detectors
• WLS906 Wireless Smoke Detectors
• AMS-220 smoke detectors on an addressable loop
Standard Fire Operation
When a Standard Fire zone goes into alarm, the panel will activate
the alarm notification output(s) and will immediately transmit a
reporting code to the central station, if programmed. The alarm
notification output(s) can be programmed to pulse—one second
on, one second off—or to follow another programmed alarm noti
-
fication pattern (see Section 4.1 “Bell Output Types”). If an open
condition is present, the panel will immediately display and com
-
municate a trouble condition. All keypads will annunciate the
trouble by activating the Trouble light and beeping twice every
ten seconds. The keypads can be silenced by entering an access
code.
18.3 Delayed Fire Zone
NOTE: IMPORTANT NOTE: This zone type is not to be used for
Commercial Fire installations. This zone type is typically used for res
-
idential installations to reduce false alarms (Ref: NFPA 72 / 1-5.4.11
Positive Alarm Sequence).
All 128 zones can be programmed as Delayed Fire zones. This
type is a Contact Input Fire zone. It is always an end-of-line resis
-
tor type with Normally Open alarm contacts from the initiating
device(s). Multiple devices may be connected on a single zone.
The zone wiring is supervised by the control panel for:
• Short Circuit: Fire Alarm
• Open Circuit: loss of the end-of-line resistor and will be indi-
cated as a Zone Trouble
• Ground Fault: resistance < 40k to earth ground indicated as
a Common Ground Fault Trouble.
Typical fire devices used on this zone type are:
• Contacts from 4-wire Smoke Detectors
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