This month’s B2B will focus on an existing datacom room located within a 200,000-sq-ft financial business office building. The existing datacom room is being expanded from 10,000 sq ft to 20,000 sq ft. This existing interior room has a class A1 environment and shall remain class A1 with the expansion project. Room shall remain at 78˚F +/- 2˚F and 40% relative humidity +/- 5%.
The existing building central chilled water plant is adequate to accommodate the increased chilled water demand so no changes are required within the central chiller plant. To select the optimum computer room air handling (CRAH) units, much of the selection criteria was already determined when the building program and the basis of design were approved by the building owner: 1) Match the existing, standardized 20-ton CRAH units. 2) Match the existing design parameters e.g., chilled water supply and return temperatures. 3) Provide N+2 CRAH units within the datacom room.