“We ran the data bus to the DGP node in each quad and we placed addressable SLCs and output cards in them as needed,” said Beers. “One of the added benefits of the ONYX Series is that there are very few wires that run between each node and the main fire alarm control head-end. Unlike many other systems, we didn’t have to install a ton of cables to accommodate the 2,000-plus initiating devices, warden phones, graphic command stations and other command and control equipment.”
Most of today’s traditional fire alarm systems call for multiple wires per device. While capable of utilizing one or more networking options, involving copper, fiber optic cable or IP, the ONYX Series system in Citi Field uses UTP (unshielded twisted-pair) per N.Y. City requirements.
“There was a lot of integration on this job. We had to integrate with the BMS (building management system) on site as well as the PA (public address) system in the bowl,” continued Beers. “We received the final approval from the New York City Fire Department to use the public address system as a method of broadcasting alarm signals throughout the ballpark.”
Integration with Citi Field’s PA system was accomplished using input from a NOTIFIER DVC. If warranted for mass notification purposes, the fire alarm’s DVC can override the bowl’s public address system to broadcast live emergency communications throughout the ballpark. The DVC is capable of providing up to eight channels of audio with five channels of firefighters’ telephone, plus control and supervision for up to 32 digital audio amplifier units. During an event, the screen automatically zeroes-in on the activated device and displays related information labels and other critical critera specific to the area.
Additional integration to Citi Field’s fire protection system includes controls of fans, dampers, elevators and escalators for smoke control functions.
“We’ve been very pleased with the (fire alarm) system,” said Pat McGovern, vice president of Operations at Citi Field. “The system itself comes with interesting features that I’ve never seen before in a fire alarm system. Because of the scalability potential, I am confident that it will meet our needs well into the future,” McGovern said.