Wireless Transmitters - Honeywell OMNI 624 Installation And Setup Manual

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User manual (32 pages)

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Table of Contents

OMNI624 Installation and Setup Guide

detectors, plus one 2.2K end of line resistor. Any device that opens adds 2.2K to the loop causing an

alarm. If the loop resistance exceeds 22K, the loop is considered tampered. If the system is set for

double-balanced, this will override any individual zone settings.

Zone Doubling: Up to 24 zones may be used as hardwired if an expander is also used when this zone

option is selected. The zones are consecutive on each physical loop. The low zone uses a 3.3K resistor

and the next zone uses a 7.5K resistor. The loop is wired with normally shorted devices in parallel.

This means that Loop 1 uses the 3.3K resistor for Zone 1 and the 7.5K resistor for zone 2; Loop 2

contains zones 3 and 4, etc. In Zone programming (Programming Submode 2, Question 50, L3 and L4),

the value of 00 disables zone doubling; otherwise, program the first odd numbered loop that zone

doubling is to begin. For example, programming a "15" in the zone doubling question means that loop

15 on the zone expander will contain zones 15 and 16, and loop 16 will contain zones 17 and 18. Only

odd numbers may be selected because the system scans 2 consecutive zones at one time.

Cross Zoning: Two groups of 2-zone crosses can be programmed. Two cross-zone timers are

programmable (Question 53, L3 [timer 1] and L4 [timer 2] in Programming Submode 2: Zone

Programming) in 15-second increments (15 Sec. to 4 min.) Cross-zone processing only occurs when

controlled zones are armed or on 24-hour zones. Cross zoning has not been evaluated by UL. NOTE:

Delay zones should not be programmed as crossed zones.

Cross zoning functions in either of 2 ways:

• If the group contains 2 different zones, when the first zone in the group is tripped, the cross-zone

timer loads and starts counting. An alarm will occur if:

The other zone in the same group trips before the timer reaches 0. This causes an alarm on the

second zone to trip. The first zone to trip will only go into alarm if it is still violated at the time

the second zone causes an alarm.

The timer expires and the zone that started the timer is still violated and has not restored during

the entire timing cycle.

• The zone is crossed to itself (e.g., Programming Submode 2, Question 51 is programmed as 0101 –

Zone 1 crossed to itself) and the zone has tripped 3 times within the timing period (Pulse counter).

Zone Expander Module: Using the OMNIEXP8 Zone Expander Module, up to 8 additional hardwire

zones can be used. These zones can be configured as standard (EOL, NC, NO), double balanced, or set

for zone doubling. Refer to Section 3: PC Board and Keypad Mounting for information on installing the

Zone Expander Module. Zone doubling and double balanced zones have not been evaluated by UL.