Reverse Polarity City Ties / UDACT's
The recent elimination of reverse polarity City Ties, and the addition of Auto Dialers, or UDACT's is creating a problem in the field. These units are being installed within the Fire Alarm Cabinets, with their transformers mounted within the same cabinet. Often, the installer is "sharing" either one , or both of the FACP batteries.
The membership should be advised that any equipment mounted within a Fire Alarm Cabinet has to be UL listed with that product. If it not, the manufacturers can remove the limited product liability for their equipment and possibly void the UL Listings. These units may share the 120 VAC power for the FACP, but no other power unless listed with the FACP in question.
It is also important that the installers of these units make sure that all portions of the FACP is considered: Alarm, Trouble, and Supervisory contacts. Many of the Fire Alarm Panels offer UL listed UDACT's for their products which are compatible, and listed for internal mounting. These units have Contact ID, or SIA operations and can be programmed to dial any Central Station the end user would require. They do not specifically lock in any FA Vendor, and meet all Code and UL requirements.
If you have any questions regarding this please let me know.
Frank Frizell, NFS Inc. |