Central Washington University CHCI Assessment Report 12-10-13
Cooling The building is provided with central campus chilled water that supplies to cooling coils in the building. Ventilation The existing ventilation system is 100% outside air/exhaust. Outside air enters the building at the ground floor mechanical room, passes through a heat recovery coil, is cooled and then distributed to terminal hot water coils for the office portion of the building. This air is then returned to an air handling unit, heated and cooled and then supplied to the interior of the animal holding area. Finally, it is exhausted through the heat recovery coil and discharged into the outside animal area. The condition of the existing duct system is not known. Some portions may be able to be reused in a major renovation, but the extent of this reuse is highly dependent on the new program/space layout and is not expected to be significant. ELECTRICAL SERVICE The existing building distribution system is comprised of a single 600A, 208/120V Main Switchboard which serves individual 208V branch circuit panelboards throughout the building. The Main Switchboard utilizes fused overcurrent protection and is original to the building construction. The existing branch circuit panelboards are also original to the building construction, but utilize circuit breakers for overcurrent protection. The 208V distribution system supplies power to all power, lighting, and mechanical loads throughout the building. Existing branch circuit panelboards throughout the building appear to have few alterations since the original construction. Each observed panelboard was noted to have approximately 10% spare circuits available for future expansion or additions. Building wall construction types include gypsum wall board, concrete or masonry. In areas where concrete or masonry walls exist, future devices will need to be installed using surface mounted conduit. Most components of the building electrical systems are nearing the end of their useful service life. Additionally, the majority of the electrical distribution equipment within the existing building no longer meets CWU campus standards. As a result, it is expected that any future uses for this building, will require a complete electrical distribution system upgrade. It is currently anticipated that the majority of the existing electrical equipment, conduit and conductors will be completely removed from the existing building and replaced, with the following exceptions: • Existing conduit which is located below the existing floor slab. • Existing conduit which is located within existing masonry/concrete walls which are not being demolished. ENERGY MANAGEMENT SYSTEM (E.M.S.) It appears some of the existing controls have been replaced with direct digital controllers.
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