The 115 Scarsdale Road project began in 1997 and involved renovating an existing industrial warehouse into a television satellite transmission facility. This project was a design-build in conjunction with the trades. The major renovations commenced in 2011, and upon completion, the mechanical and electrical systems could be concurrently maintained and operated with very little or no impact to the critical loads. As services to the public could not be impacted, all major renovations and upgrades occurred with the critical loads operating. The design was performed in a manner that accommodated a high level of uptime, availability and flexibility in addition to schedule and budget challenges.
The mechanical systems utilized direct expansion (DX) cooling technology and was composed in a N+1 configuration - this afforded excellent reliability and met delivery requirements. During the 2011 renovations, the mechanical systems supporting the new equipment were all configured in an N+1 manner.
This transmission facility was initially designed as a Tier I facility utilizing a single 750kVA uninterruptible power supply (UPS) system and a single 400kVA UPS system working independently. The building was supported by a 1500kW stand-by diesel generator system. The 2011 renovations included the upgrade of the UPS system to facilitate 2N redundancy as well as a 33% increase in capacity. As a result, two separate 2N UPS systems were deployed. Each system is made up of two independent 750kVA UPSs and two independent 400kVA UPSs. The UPS distribution was upgraded to have two paths of power to the IT racks. Dual corded equipment is utilized and, where equipment could not facilitate dual cords, static switches were utilized. The emergency generation system was upgraded from a single 1500kW generator to a 2N configuration consisting of two 2500kW generators. Power densities exceed 80 watts per square feet for the server rooms and transmitter rooms.