Multple GRI 2600's on a single zone?

Ira

Active Member
I'm running the water sensor wiring on a bathroom remodel, and I need to know if I can have multiple GRI 2600 (NC) water sensors on a single zone, i.e., can I run a four conductor cable from the Elk M1G zone to the first 2600, then a four conductor cable from the first 2600 to the second 2600, and so on? Or do they all have to be home run to a separate zone?
 
If I can have multiple sensors on a zone, do I lose anything other than not being able to tell sensor tripped? Since they are all in the same bathroom, and I will probably split five sensors across two zones, knowing the specific sensor that tripped isn't all that important anyway.
 
Unfortunately, the walls will be closed in before I have the sensors in hand to bench test.
 
Thanks,
Ira
 
They'll all need power, wire the 12VDC in parallel to all sensors.
Wire the outputs in series with a single EOL at the farthest sensor.
 
Actually, using a common negative, a single 4/22 can bring back 2 sensors to separate zones and be EOLR supervised. In the case (what I'm reading) the OP can drive 4 2600's on separate zones using a pair of 4/22's and only have to double up a single unit.
 
Or if I'm reading as a single 4/22 exists, then you'll be able to use 2 zones sharing a common negative.
 
2600's are NC devices. They wire in series. Wire them in parallel and you'll never get an alarm, period.
 
The more zones you can separate devices, especially powered ones, the better.
 
I thought I was correct, in theory at least, with the NC sensors.

What is the issue with placing multiple powered sensors on a single zone?
 
Always going to be considered a non-best practice, for burg alarm and any other alarm purposes. Exponentially increases troubleshooting if there is an issue or false. Not only do you have the protective circuit to troubleshoot but now you're introducing another 2 items that can be just as troublesome (low voltage, ground, etc.)
 
In the case of running a pair of devices on a single 4/22, at least if you have a false alarm, it's easy to determine if it's power related or circuit related (or the common negative lifting).
 
If you have multiple devices installed in series, with power and NC, what is causing the alarm? Is it the circuit? Power? Ground? Cabling between devices?
 
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