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change from Fan:ConstantVolume to Fan:OnOff

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

change from Fan:ConstantVolume to Fan:OnOff

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

change from Fan:ConstantVolume to Fan:OnOff

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