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DOE-2 Reference Manual Version 2.1 - DOE2.com

DOE-2 Reference Manual Version 2.1 - DOE2.com

DOE-2 Reference Manual Version 2.1 - DOE2.com

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ECONO-LIMIT -TPREHEAT-Ton weekends and holidays. Design baseboard heat input isdefined as BASEBOARD-RATING.is the outside air temperature above whichreturns to,minimum outside air operation.ECONO-LIMIT-T will default to the weighteddesign CFM, of DESIGN-COOL-T for all ZONEsthe economizer(See Fig. IV.22).average, based onin the SYSTEM.is the minimum temperature of air leaving the preheat coil.The SYSTEMS program calculates the necessary preheat coilenergy input to maintain this temperature.minimumoutside airf--L------' - - - -lO~_L __ ~~ ___L~__-L__ ~~ __-L--L--L--~---20 0 90Outside Te~~ - ofECONO-LiMIT - TFig. IV.22.Typical curve of air flow vs outside air temperature for systemswith temperature type economizer (illustrating use of keywordECONO-L1MIT-T) .IV.210 (Revised 5/81)

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