ASHRAE.HandBook_27-2008 UNIT VENTILATORS UNIT HEATERS

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1、RelatedCommercialResourcesCHAPTER27UNITVENTILATORS,UNITHEATERS,ANDMAKEUPAIRUNITSUNITVENTILATORS...............................................................27.1Maintenance.............................................................................27.8Application.............................

2、..................................................27.1MAKEUPAIRUNITS..............................................................27.8Selection...................................................................................27.3DescriptionandApplications......................................

3、.............27.8Control.....................................................................................27.3Selection...................................................................................27.8UNITHEATERS.......................................................................27.

4、4Control.....................................................................................27.9Application...............................................................................27.4Selection...................................................................................27.4Applica

5、bleCodesandStandards.............................................27.9Control.....................................................................................27.7Commissioning.........................................................................27.9PipingConnections......................

6、............................................27.7Maintenance...........................................................................27.10UNITVENTILATORSprovidedwithface-and-bypassdampersforcapacitycontrol,ifdesired.Valvecontrolofcapacityisalsoavailable.AHEATINGunitventilatorisanassemblywhose

7、principalFigure1Bshowsatypicalair-conditioningunitventilatorwithafunctionsaretoheat,ventilate,andcoolaspacebyintroduc-combinationhot-andchilled-watercoilforuseinatwo-pipesys-ingoutsideairinquantitiesupto100%ofitsratedcapacity.Thetem.Thi