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Adding Electric Radiant supplemental Heat to a Multifamily with Packaged FAF

asked 2018-06-11 11:05:32 -0500

kbdick's avatar

updated 2018-06-11 13:58:25 -0500

I have a multifamily building with packaged FAF serving the apartment zones. The apartments also include radiant floor heating as supplemental heating (separate thermostat).

I am using EnergyPlus. I added the HVACTemplate:Thermostat, HVACTemplate:Zone:Unitary, and HVACTemplate:System:Unitary to model the package units. Adding the ZoneHVAC:LowTemperatureRadiant:Electric gives me: * Severe * GetZoneEquipmentData1: Number of Controlled Zone objects [83] greater than Number of Zones [45] * Fatal * GetZoneEquipmentData1: Too many ZoneHVAC:EquipmentConnections objects.

I recognize each zone can only have one thermostat, so I want to add both pieces of equipment to ZoneHVAC:EquipmentList, but I can't select the Unitary system and add it in order to prioritize.

What is the proper way to add these systems into the same zone?

Thanks for any help.


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answered 2018-06-21 17:46:09 -0500

HVACTemplate only understands other HVACTemplate objects, so it is not aware of the other HVAC objects that were added for the electric radiant heat.

To add additional HVAC components, start with an input file that has only the HVACTemplate objects (no other HVAC objects) and run the simulation. Then take the expanded idf output file (expidf), rename that to newname.idf and edit this file to add the ZoneHVAC:LowTemperatureRadiant:Electric object and add it to the zone equipment list that is already there from the templates.

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Asked: 2018-06-11 11:05:32 -0500

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Last updated: Jun 21 '18