Vista 20P Zone Doubling for dummies

Old 01-19-05, 08:25 AM
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Question Vista 20P Zone Doubling for dummies

I need some major help trying to get this zone doubling through my noggin. I had the system set up by a guy who failed to use the doubling feature and instead put 2, 3, even 4 sensors in line on 1 zone.

Looks like he used resistors in the panel to wire up the connections, but its my understanding that to double the zones I need to place the resistors at the switch end, not at the control I right about this?

If I place them at the sensor/switch end, am I able to remove the cover over the sensor and place the resistor in there, or do I place it below the sensor in that bit of wire that protruds from the wall?

The company that I purchased the system from says that the zone doubling resistors were included and they do not sell them by themselves. Anyone know where I can obtain them now?

When placing resistors across wires, should the wire be bare?

Am I better off just ordering an expansion module and forgo the doubling? Are resistors used soley in the control panel in this option, or are they used at the sensor as well.

Very confused.....
Old 01-19-05, 09:31 PM
Join Date: Dec 2004
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first i would advice you to not to use zone doubling for it causes lots of troubles when it comes to service the system (lots of wires in the panel),beside the expandor is not that expensive,if you want do so you could obtain another set of resistors from another vista20 panel,and place different color resistors on the high section in the panel (if you are going by the color code it connects to the yellow not across between yellow and green as you do for the smoke,so you use one for each zone starting from zone 2, Do not double one for it is programmed as fire zone. zone 2 takes zone 10 zone ,3 takes 11 and so on .so you will have 1,2,3,4,5,6,7,8,10,11,12,13,14,15,16 on one panel ,in the programing part you choose option 3 when you get eol type .and that is about it.and remember an important thing resitors are different so do not try to use those regualr resistors which comes in set of 8 for zone doubling they will not work .

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