BEDES Dictionary

HVAC
Term	Term Definition	Lists	Unit of Measure
Cell Control Type	Cooling tower cell control type. A cooling tower cell is the smallest tower subdivision bounded by either exterior walls or partition walls, which can function as an independent unit with regard to air and water flow. Most larger cooling tower systems use a multiple-cell configuration. This configuration allows for the correct staging of equipment as the facility loads vary and incorporate redundancies such that critical operations are never in jeopardy of being nonoperational.	View	None
Cell Count	The number of cells in the cooling tower. Each cell has its own fan, water flow allowing for responding to lower load conditions		count
Chiller Compressor Driver	Equipment driving the compressor used in a chiller	View	None
Chiller Compressor Type	Type of compressor in the chiller.	View	None
Compressor Staging	The compressor staging for the unit. Select "Single Stage" for units with single stage (on/off) control. Select "Multiple, Discrete Stages" for units with multiple compressors, discrete unloading stages, or compressors with stepped speed motors that are controlled to operate at discrete stages. Select "Variable" for compressors that operate at variable speeds or with modulating unloading.	View	None
Condenser Fan Speed Operation	The condenser fan control option used by the unit. If the unit has several constant-speed condenser fans that stage on in conjunction with multiple compressors, this should be set to ÒStepped Speed.Ó	View	None
Condenser Type	Type of condenser used for DX cooling plant.	View	None
Condensing Operation	Capability of a boiler or furnace of condensing the water vapor in the exhaust flue gas to obtain a higher efficiency.	View	None
Cooling Delivery Type	Method of delivering cooling to the zone.	View	None
Cooling Heating Delivery Type	Delivery type of either a cooling or heating system	View	None
Cooling Heating Medium	Cooling or heating medium	View	None
Cooling Heating Type	Type of cooling or heating system	View	None
Cooling Medium	Medium used to transport cooling energy from a central cooling system to individual zones.	View	None
Cooling Stage Capacity	Average capacity of each cooling stage, at ARI rated conditions, expressed as a fraction of total capacity		None
Cooling Type	Source of cooling. Cooling delivery is recorded in a separate data field. Use of fans or blowers by themselves without chilled air or water is not included in this definition of cooling. Stand-alone dehumidifiers are also not included.	View	None
Dehumidification Type	Dehumidification type in air-distribution system.	View	None
Design Static Pressure	The design static pressure for the fan		Pa
Draft Type	Draft mechanism used for drawing air through a boiler, furnace, or water heater.	View	None
Duct Configuration	Configuration of ducts.	View	None
Duct Insulation R Value	R-value of duct insulation.		hr-ft2-F/Btu
Duct Leakage Test Method	Method used to estimate duct leakage	View	None
Duct Pressure Test Leakage Percentage	Duct leakage found from pressure test. Reported as a percentage. [%]		percent
Duct Pressure Test Leakage Rate	Duct leakage found from pressure test. Reported in cubic feet per minute.		cfm
Duct Sealing	Condition of duct sealing.	View	None
Duct Surface Area	Total surface area of ducts associated with this air distribution system.		ft2

BEDES Dictionary

Version 2.6

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