wiring of addressable horns
Posted: Sun Jun 19, 2016 8:23
We are installing a Simplex fire alarm system at one of our hospitals. Simplex makes a special isolator for these notification devices. My questions are as follows:
(1)Are these addressable horns considered to be an "Active Field Devices" in CAN/ULC-S524-06?
(2)Should these addressable horns be wired with isolators in the same manner as addressable initiating devices such that if that the wiring run (either A loop or B run) serves more than one National Building Code of Canada required fire alarm zone, a fault within one fire alarm zone shall not prevent the normal operation of other addressable horns in another fire alarm zone?
(3)Where in CAN/ULC-S524-06 does it refer to the issue brought up in my question (2)?
(4)We were considering wiring the addressable horns with isolation like Figure 2.6 (JANUARY 2016 CAN/ULC-S524:2014-AMD1 AMENDMENT 1). We would have an A loop of NAC isolators located in a cabinet next to the FAP in a fire separated room. The number of isolators would equal the number of National Building Code of Canada required fire alarm zones that had horns.
Then we would have B T-taps off these isolators to horns in each respective fire alarm zone. Does that seem reasonable?
Thanks
Pat
(1)Are these addressable horns considered to be an "Active Field Devices" in CAN/ULC-S524-06?
(2)Should these addressable horns be wired with isolators in the same manner as addressable initiating devices such that if that the wiring run (either A loop or B run) serves more than one National Building Code of Canada required fire alarm zone, a fault within one fire alarm zone shall not prevent the normal operation of other addressable horns in another fire alarm zone?
(3)Where in CAN/ULC-S524-06 does it refer to the issue brought up in my question (2)?
(4)We were considering wiring the addressable horns with isolation like Figure 2.6 (JANUARY 2016 CAN/ULC-S524:2014-AMD1 AMENDMENT 1). We would have an A loop of NAC isolators located in a cabinet next to the FAP in a fire separated room. The number of isolators would equal the number of National Building Code of Canada required fire alarm zones that had horns.
Then we would have B T-taps off these isolators to horns in each respective fire alarm zone. Does that seem reasonable?
Thanks
Pat