Re: Natural gas detectors and Co detectors

[JoeRaisin <joeraisin@xxxxxxxxxxx>]

Mark Leuck wrote:
> "Jim Rojas" <jrojas@xxxxxxxxxxxx> wrote in message
> news:46e4198c$0$10412$4c368faf@xxxxxxxxxxxxxxxxx
>> I had my Vista20P originally setup for zone doubling. I had my 2 wire
>> smokes on zone 1. I was still able to use zone 9 as a wireless zone. But
>> soon afterwards, I threw in a 4219 to keep things simple. I am no fan of
>> zone doubling.
>>
>> Jim Rojas
>
> True but zone 1 isn't zone doubled, I was referring to having say zone 2 as
> a burg and zone 10 as a fire which is bad
>
> I never cared for it either, too many wires in too few terminals
>
>>
>>
>>
>> Mark Leuck wrote:
>>> Fault as in alarm? If you are using Contact ID I'd say a 151 Gas
> Detection
>>> should work. Honeywell says it's a bad idea to program fire on a zone
> thats
>>> set for zone doubling and the same if on a zone expander.  For those use
> the
>>> panel's built-in zones
>>>
>>> <paul@xxxxxxxxxxxxx> wrote in message
>>> news:1189346248.446114.307000@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
>>>> I use Ademco Vista 20p panels.  I need to add 2 Co detectors and 2
>>>> Natural gas detectors.
>>>> Ademco has a Co type for fault reporting, but I do not see a Natural
>>>> gas faul code.   What do you guys use?
>>>>
>>>>  Also can I put all 4 detectors on a zone expander?  The manual says
>>>> don't use zone doubling and Ademco Tech said don't use expansion
>>>> module but he seemed a bit confused when I asked him why.  Anybody
>>>> know why?   Thanks Paul.
>>>>
>>>
>
>

Zone doubling cannot be done with any normally open zone and that panel
views an open on a fire zone as a trouble.  I suppose you could create a
configurable zone.  I wouldn't.

I have done quite a few zone doubled systems and it is something you
shouldn't do in a hurry.  Proper documentation of what zone is what as
well as resistor locations is vital.