change from Fan:ConstantVolume to Fan:OnOff

asked 2014-12-10 17:17:42 -0600

Alex Vlachokostas

928 ●4 ●15

updated 2015-01-09 12:36:32 -0600

Neal Kruis

4745 ●10 ●17 http://bigladdersoftware.com/

Hi everyone, I currently have a Fan:ConstantVolume in a single thermal zone model: I want to change the Fan:ConstantVolume which does not cycle to a Fan:OnOff which cycles with heating/cooling. Therefore, after reading the InputOutput Reference document, I just substituted the Fan:ConstantVolume with the Fan:OnOff object.

However, I get the following severe error: * Severe * GetAirPathData: AirLoopHVAC = "SYS-1". * ~~~ * ..Invalid Air Loop Component Type = "FAN:ONOFF". * ~~~ * ..Air Loop Component Name = "SYS-1 SUPPLY FAN". * ~~~ * ..reference Branch = "SYS-1 MAIN BRANCH". * ~~~ * ...This component may only be referenced by a parent component such as AirLoopHVAC:Unitary:Furnace:HeatCool or similar. * Fatal * GetAirPathData: Errors found retrieving input for AirLoopHVAC.

Apparently there are more objects that I have to define. Any thoughts?

Thank you very much. I appreciate your help.

Alex

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And with any of these unitary or packaged equipment types, you use the Supply Fan Operating Mode Schedule to indicate when the fan should run in cycling mode (0) or continuously (1).