How do I install a 4-wire smoke on my VISTA-P system?

There are 2 types of wired smoke detectors that can be used on the Vista-21IP, Vista-20P, Vista-15P panels, 2-wire, or 4-wire.

2-wire smokes are only supported on zone 1 of the panel, and the logic for resetting the smoke after an alarm is built in, and happens automatically on the 2nd disarm after an alarm on that zone.

4-wire smokes can be used on any hardwired zone other than zone 1. When a 4-wire smoke goes into alarm, it latches, and in order to reset it, power to the smoke has to be dropped for several seconds. On some older style panels, this was handled automatically by the panel, but on the P series panels, you must perform additional wiring and programming to make the reset happen. Fire reset logic works like this: If any zone programmed as fire, other than zone 1, has a short on the zone after an alarm with the first code and off sequence have been entered, the 2nd code and off sequence causes the output to activate for 2 seconds, dropping power and resetting the smokes.

The reset for a 4-wire smoke can be accomplished using an on-board trigger (panel version 2 or higher) or by using a programmable relay, such as the ones found on a 4229 or the 4204. We’re going to discuss, and show wiring for using the on-board trigger. This output, called Trigger 1, or Output 17, has 100 mA of current available, and can usually be used by itself to power up to two 4-wire smokes. If more than 2 4-wire smokes or more than 100 mA of current are needed, a relay would need to be used. Wire the smokes as shown in the diagram, and perform the following programming:

First, we must invert the trigger, so that in the normal, deactivated state it provides the power negative for the smokes:

  1. Enter program: [Installer Code] (default 4112) + [8] + [00]. Be sure to use an alpha display keypad, such as a 6160.
  2. Enter Output Mapping: Enter [*79], at the “Enter Output Number" prompt, enter [17], then [*].
  3. Invert Trigger 1, Output 17: At the “Output Norm Low” prompt, enter [1], then [*].
  4. Exit Output Mapping: Back at the “Enter Output Number” prompt enter [00].

Next, we program the trigger to "float" or remove the negative, for a Fire Reset:

  1. Enter Output Function Programming: Enter [*80], and at the “Output Funct #.” prompt, choose the next available output function number. If this is the first, enter [01], then [*]
  2. Continue through programming: You’ll see a summary screen, press [*] again.
  3. Enter the output trigger: At the “Activated By” prompt press [2], for “Zone Type” then [*].
  4. Enter the type output trigger type: At the “Enter Zn Type” prompt enter [54] “Fire Zn Reset”, then [*].
  5. Enter partition, if applicable: If prompted for partition, enter the partition number for the Fire Zone to be reset, or enter [0] for “All” then press [*].
  6. Specify which output is being used: At the “Enter Output No.” prompt, enter [17] then [*].
  7. Continue through programming: You’ll see another summary screen, showing your programming, press [*].
  8. Exit programming: Back at the “Output Funct #” prompt press [00], this will put you back in regular programming, and you can press [*99] to exit.

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I'm using a 4204 for the reset function now. I was hoping to move it to the trigger output and free up a 4204 relay for another use. It seems I'll have to add another 4204 for more relay outputs. Thanks for the info.
What you're trying to do is called "inverting" the trigger, and this option was added in version 2 of these panels. This is why you don't get the programming option, as your panel is a version 1. Also, trigger 1 only has 40mA of current available on this version panel, so probably not enough to power your smokes anyway. Sadly, you can't chip upgrade these panels either, as the difference between version 1 and 2 was a board change as well as a firmware change. Your options are to upgrade the (meaning, buy a new) panel, or you could add a 4204, or a 4229 and use the relay to do your smoke reset.
https://uploads.disquscdn.com/images/9e87ed8e6f4fc306a582329a556755a2fff0da80d79bcc755e1d0ef7e79ce70a.jpg Hi: I'm trying to setup my smoke detector reset using the trigger output 17 as illustrated above. When I move into the relay programming section *79 and try to enter 17 it is not accepted. I can enter 01 through 16, but not 17 or 18. It just blanks out the 1 of 17 returning it to 0, for 07. If I proceed to the output programming *80 it does allow me to enter output 17, showing T17 in the summary after programming it for alarm reset zone type 54. The Vista-20P PCB marking show: SAVS20P3 D W152249 F290 The EPROM is marked: WA20P-1.5 Pitway 2003 Rev. 1.5 How can I get T17 to be inverted? Thanks.

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