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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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part-load horsepower consumption for the supply fan andreturn fan (if any), on the basis of the part load versusfan horsepower characteristics that are typical for thecontrol mode selected (see Fig. IV.23). The program assumesthat both supply and return fans have the same kind of flowcontrol. The FAN-EIR-FPLR code-word is input forFAN-CONTROL when the user wishes to specify his own fancontrol method. The user must then enter, under theCURVE-FIT command, a replacement curve and then enter itsU-name as a value for the FAN-EIR-FPLR keyword in theSYSTEM-FANS command (later in this section).TABLE IV.35Code-WordSPEEDINLETDISCHARGECYCLINGTWO-SPEEDCONSTANT-VOLUMEFAN-EIR-FPLRFAN-CONTROLVariable speed motor (1)*Fan inlet vanes (2)*Damper in fan discharge (3)*Cycles on and off (4)High or low speed (for PTAC only -represented as 100 per cent and anotherpoint lower on curve 1)Volume kept constantUser specified fan control**For systems that have variable flow central air-handlers only.IV.222 (Revised 5/81)

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