* Hiring environmental contractors to clean unit ventilators
DDC enables/disables unit ventilators
and fan coil units by zones, rooftop units, air handling units and selected exhaust fans.
This system also cools and partially dehumidifies the ventilation air that is supplied directly to the unit ventilator
A modern two-pipe unit ventilator
system designed per the E-Source pamphlet,5 with an air-cooled chiller and the following boiler options: (a) propane and (b) fuel oil.
"Teachers learn that their classrooms' unit ventilators
shouldn't be used as bookshelves, that they shouldn't block the door vents or shut off air cleaner fans to muffle noise, or spray pests with their own can of Raid.
Common examples of terminal units that can be equipped with variable speed fan control include water-source heat pumps (WSHP), fan coils, blower coils, classroom unit ventilators
, and variable refrigerant flow (VRF) terminals.
McQuay chillers, self-contained units, rooftop units, and AAF[TM]-HermanNelson[TM] unit ventilators
are all available with MicroTech II with the Protocol Selectability feature.
District-wide, Infinity controls and monitors exterior and interior lighting; chilled water plants, including ice storage systems; central heating plants; domestic and kitchen water heating systems; bell systems for starting/ending class periods; occupancy scheduling by classroom; real-time monitoring of 17 electric meters; and DDC control of classroom unit ventilators
and VAV boxes.
According to Kirkwood Facilities Manager Pete Pilgrim, Kirkwood has every type of conventional HVAC system used somewhere within its 300-acre campus: constant volume, constant volume reheat, VAV, steam and hot water, unit ventilators
, small split systems, rooftops, chilled water, and direct expansion cooling.