Re: Replacing Radionics with Vista 20P

[Frank Kurz <tech@xxxxxxxxxxxxx>]

On 21/01/2011 6:49 PM, Christopher Glaeser wrote:
> The Radionics uses 2K EOLR for fire and 1K EOLR for alarm. The Vista
> uses 2K for both fire and alarm. I replaced all the 1K alarm EOLRs with
> 2K EOLRs and all the alarm sensors are now functioning on the Vista.
>
> The Radionics D2112 uses powered two-wire 2K EOLR on the fire zone, so I
> did not have to replace that resistor. However, the Vista 20P panel
> still indicates a fault on the fire zone (The Radionics did not report a
> fault prior to removal). I have checked polatiry (positive on 8,
> negative on 9) and tested voltages at the panel, at the smoke, and
> across the EOLR. All are 13+ VDC. The resistance of the fire circuit is 2K.
>
> There are two fire devices wired to the panel. One is a System Sensor
> 2100TD smoke and the other is a Potter VSR-SF waterflow alarm.
> Four-conductor fire wire runs from the panel to each fire device,
> red/black powered outgoing and blue/brown return. The return pair of the
> first is wired to the outgoing of the second. The second return has a 2K
> EOLR.
>
> Question: Are these two fire devices compatible with the Vista 20P?
>
> Best,
> Christopher
>


I seem to recall you have to cut a jumper in the Vista 20 for zone 1 to
be a supervised fire circuit.  Mind you, my memory could be faulty.  :-)

--
Frank Kurz
www.firetechs.net