CORPORATE CAMPUS OFFICE BUILDING RETROFIT TO RADIANT HVAC DESIGN-BID-BUILD PROJECT

摘要

This month's Facility File will focus on the B2B June test for the renovation of an office building located on a major corporation's U.S. headquarters campus. The existing HVAC system to be replaced is an antiquated hot water heating system serving baseboard radiation, unit heaters, and a rooftop HVAC unit. This single-story building is scheduled to be renovated into an open office concept, and the HVAC system will have a direct outside air system (DOAS) with gas-fired heat and direct expansion cooling supply air to active chilled beams. Supply air to active chilled beams shall receive supplemental cooling via a 60-ton, air-cooled chiller providing 55℉ chilled water supply connections at each active chilled beam. Hot water radiant heat panels, located around the perimeter of the building, will be served by a 600-MBH condensing boiler providing 125° hot water supply to these panel. The project delivery is design-bid-build (DBB), so there will be little interaction between the owner, outsourced O&M staff, design team, and the DBB general contractor and his subcontractors. The design engineer will specify in the contract bid documents the method of data collection of equipment in a manner that will make seamless the compilation of the preventive maintenance (PM) work orders to populate the existing corporate campus CMMS system to have work orders ready for day one of owner occupancy.