Engineered Systems - November 2008 - (Page 16)

CaseInPoint A fire alarm system featuring 1,000 addressable points provided needed flexibility to this hotel chain. Input 100 at www.esmagazine.com/instantproductinfo along with engineering ﬁrm Thorson Baker. “Due to the nature of the hotel’s construction — the way the pre-cast concrete was poured, among other factors — we were unable to use horizontal conduits. So we designed and speciﬁed a ﬁre alarm system somewhat out of the ordinary: instead of horizontal type rungs of cabling, we used vertical risers. These served as the backbone of the system’s piping.” “Ultimately, this minimized labor and material costs and helped Staybridge realize signiﬁcant cost savings.” Not every ﬁre protection system is ﬂexible enough to accommodate such directional idiosyncrasies; the system Klag speciﬁed, however, more than ﬁts the bill. His recommendation was a system from Silent Knight, part of the Honeywell Life Safety group and a leading provider of industry-wide compatible ﬁre alarm solutions for small and mid-size institutions as well as commercial sites. At the heart of the system that Klag provided was the Farenhyt IFP-1000 Analog/Addressable Fire Alarm Control Panel (FACP). The basic IFP1000 system, which has over 1,000 addressable points, has one signaling line circuit (SLC) that supports expansion of up to seven more SLC’s. The FACP also has a built-in, dual-line digital ﬁre communicator and supports a variety of devices, including remote annunciators, serial/parallel printer interface (for printing system reports), and System Sensor Intelligent Device Protocol (IDP) or Hochiki devices. For added ﬂexibility, the system can use standard wire — no shielded or twisted pairs are required. Powering the system are eight RPS-1000 Intelligent Power Modules. The RPS-1000 adds 5.0 amps of power supports its own backup battery and monitors the AC power. The Flexput circuits can be programmed as notiﬁcation appliance circuits, continuous, resettable, or door holder power; or as conventional initiation circuits for two or four-wire smoke detectors and contact devices (i.e. pull stations). Some of the RPS-1000 devices house SLC cards, depending on where they are positioned in the vertical riser structure. Because of the complexity of the project, Life Safety Systems has been involved in this project for a couple of years. Now that the installation is complete, Klag says that the system’s performance has pleased everyone connected with the project. “The job came off very well, and the products are operating exactly as they are supposed to,” he said. “The local [Mayﬁeld Heights] ﬁre marshal has been especially happy with the system’s functionality. Most importantly, hotel management is satisﬁed.” Despite their satisfaction, Staybridge representatives have requested certain modiﬁcations to the system — changes necessitated by Staybridge’s own stringent ﬁre safety standards. “At the time the system was being installed, Ohio code did not require smoke detection capabilities in the corridors of buildings equipped with sprinklers,” said Klag. “But it was required by Staybridge in its standards manual. After negotiating with Staybridge, the owners decided to install it. Ultimately, they weren’t concerned with minimal code compliance; they wanted a level of protection that met their own needs.” “Silent Knight made this a very simple procedure. To begin with, the changes were easily made because of the ﬂexibility of the installation and the product itself. Plus, material was delivered within days of order, and the installation and programming were completed within a week.” Another revision was catalyzed by a visit from the State Fire Marshal once the project was completed. The Marshal came through and saw a few magnetic doors that had been added for ﬁre protection of the lobby area. The Marshal requested that Staybridge put a beam-style smoke detection across the lobby area. “Still, engineering the change has been relatively simple because of the system’s ﬂexibility. Almost anything that is asked of us can be accomplished with the core system we have in 16 En gi neer ed S y stem s November 2008 ESM09081REMA.indd 1 8/20/08 3:54:48 PM http://www.remadrivac.com http://www.remadrivac.com http://www.esmagazine.com/instantproductinfo

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Engineered Systems - November 2008 Contents Editor’s Note HVAC Challenge Back2Basics Case In Point Commissioning Building Automation HVACR Designer Tips Show Me The Motor Money The IAQ Top 10 Putting A Damper on Tragedy Special: Lighting Controls Computers & Software Products Glossary Classifieds Advertiser Index Tomorrow’s Environment

Engineered Systems - November 2008

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