Scope of Work/Overview:
The DDC system consists of obsolete field control panels (Barber Colemen Network 8000) and a third party gateway device and server from Tridium (Niagara R2 package) both of which are now considered obsolete and software licenses for the Niagara R2 are no longer available. The current graphics server is a JAVA based software, with inherent security vulnerabilities which limits the ability to operate on the BGIS network. The replacement project is to include new DDC controllers, operator interface software (web based), new field devices (thermostats, sensors, transmitters, actuators, relays, etc.). Terminal units such as VAV¿s and fancoils and their associated controllers are to be reviewed for current network configurations (i.e. to DDC field panels or the Tridium gateway) to determine if the controllers require immediate replacement with the new DDC system or can remain in operation through the Tridium Gateway until the recommendations of Carbon Neutral Study are implemented. Investigate possibility to install occupancy and CO2 sensors and use those to individually control each room based on actual demand. The new DDC controllers will allow for several energy-saving practices including night set-back, optimum start/stop, occupancy based controls, etc. Sequences of operation should be reviewed holistically and implemented based on ASHRAE guideline 36. Project to be future ready for inclusion of smart building analytics including Building Data Analytics and Fault Detection and Diagnostics (BDA/FDD) platform and services. The new DDC system shall be native BACnet to help ensure future-proofing for the system, and to accommodate future additions/integration to new systems being proposed in the ongoing Carbon Neutral Study GOC0887557.
