Does A Vista Automation Module Need To Be Registered

What is Zone-Doubling on a Honeywell VISTA System?

Zone-Doubling, available on the Vista-20P and Vista-21iP panels, is a method of using unlike resistor values to let zones ii-8 to each exist treated as two separate zones. When zone 2 is doubled, it becomes both zone two and 10. Zone 2 uses a 3K resistor, and zone ten uses a half-dozen.2K resistor.

The Vista-20P and Vista-21iP panels each take eight hardwired zones built into the console. Traditionally, additional hardwired zones were added to the panel using a Honeywell 4219 8-zone expansion board. But, in some cases, the user may simply need to add 1 or two boosted zones. In these situations, adding a 4219 is somewhat wasteful. Zone-Doubling is perfect for these circumstances.

Simply zones 2 through viii tin exist doubled, which adds up to 7 boosted hardwired zones. When zone 2 is doubled, information technology becomes both two and 10, when zone iii is doubled, information technology becomes both 3 and 11, and so on. Zone ane can non be doubled, every bit it is electrically isolated from all other zones on the console, and information technology has a lower resistance tolerance than any other zone (100 ohms tolerance, vs. 300 ohms). This is because it serves as the console's 2-wire fume zone.

The following rules utilize to doubled zones:

Response Fourth dimension. The response fourth dimension programmed for the lower zone number volition also apply to the college zone number. If zone 3 is programmed with a 700 millisecond response time, zone 11 volition also have a 700 millisecond response fourth dimension.
Unremarkably Airtight Simply. Only Usually Closed devices tin can exist doubled. A short across either resistor of a doubled zone will crusade a tamper response (Mean solar day/Night) on both doubled zones. When the system is armed, this will report equally an E135 and is treated equally an alarm. When disarmed, it reports as an E383 and displays equally a trouble.
Double similar zone types together. Before panel versions had bug when unalike zones were doubled together, such as when an Entry/Go out zone was doubled with a move zone. In that particular example, the move zone volition nearly probable be bypassed in Stay mode, while the Entry/Leave zone will be active. As a upshot, walking around and faulting the motion zone while in armed stay way could sometimes cause a false alert on the Entry/Exit zone. For this reason, information technology was recommended to but double like zone types. This was corrected in later versions, but it's non a bad idea to attach to this logic, even now.
The video below will bear witness yous how to wire the 3K resistor to the lower number zone in a zone doubled pair:

The videos below volition prove you lot how to wire the six.2K resistor to the higher number zone in a zone doubled pair:

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Honeywell 4219

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Answered: December 28, 2017
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