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MAY 2009SOLICITATION FOR OFFERS OUTPATIENT CLINIC SFO NO. VA-101-XX-RP-XXXX[INSERT LOCATION OF FACILITY](6) Temperature Control – Open SpacesOpen spaces with exposed perimeter and interior spaces shall be divided into two sub-zones,perimeter and interior. Each sub-zone shall be served by a dedicated air terminal unit. Openspaces are defined as the spaces without floor to ceiling partitions.F. Air Distribution ArrangementProvide fully ducted supply, return, and exhaust air systems between the fans andinlets/outlets. Use of partial or common ducted return air arrangement is not acceptable. Toavoid contamination and other shortcomings cited below, do not use ceiling space betweenthe structural ceiling and suspended ceiling space as the supply or return air plenum.In the ASHRAE Application Handbook (2007 Edition), drawbacks of plenum return system arecited as reproduced below:"Suspended ceiling return air plenums eliminate sheet metal return air ductwork to reducefloor-to-floor height requirements. However, suspended ceiling plenums may increase thedifficulty of proper air balancing throughout the building. Problems often connected withsuspended ceiling return plenums are as follows:Air leakage throughout cracks, with resulting smudges.Tendency of return air openings nearest to a shaft opening or collector duct to pulltoo much air, thus creating uneven air motion and possible noise.Noise transmission between office spaces."G. AHU Controls(1) GeneralProvide a fully functional automatic control system to ensure comfort and energy efficiencyfrom full load to part load conditions, with integral safety features to protect the occupants andequipment.(2) System Components and Minimum SequencesProvide motorized control valves, automatic dampers, airflow measuring devices, a staticpressure sensor, chilled-water flow meters, temperature, pressure, and humidity sensors,humidifiers, smoke detectors and smoke dampers, as required, to address such sequencesas: Supply Air Temperature Control Fan Speed Control Provision of Minimum Outside Air from Full Load to Part Load System Start-Up Morning Warm-Up and Night Setback Cycles Smoke Detection Alarms6.4.7 FAN COIL UNITSA. GeneralProvide a 4-pipe fan coil unit system for spaces not required to be in compliance with thecriteria cited in Paragraph 6.4.6A above. Cooling only fan coil units are permitted, where yearroundcooling is required for applications, such as elevator machine room, telephone room,and computer room. Provide at least one fan coil unit for each room. A single fan coil unitcannot serve two or more rooms by ducted supply air takeoffs. Use of a 2-pipe fan coil unitsystem, with seasonal changeover, is not permitted.Part I: Basic Solicitation Requirements – Page 102 of 196Lessor __________ Gov’t. ____________________ of __________ Pages