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You can model water to air DX coils on an air loop by using an AirLoopHVACUnitarySystem. In the Library menu, if you expand the 'Air Loop HVAC Unitary System' selection, at the bottom you'll see 'Unitary - WaterToAir Heat Pump - Cycling - Elec reheat', which you can drag to the supply side of an empty air loop. That object is a composite system containing a Fan:OnOff, Coil:Cooling:WaterToAirHeatPump:EquationFit, Coil:Heating:WaterToAirHeatPumpEquationFit, and Coil:HeatingElectric. You can connect the coils to your ground source loop via the chain icons at the top, similar to how you would connect water coils.

You'll probably also want a OutdoorAirSystem on the air loop.

You can model water to air DX coils on an air loop by using an AirLoopHVACUnitarySystem. In the Library menu, if you expand the 'Air Loop HVAC Unitary System' selection, at the bottom you'll see 'Unitary - WaterToAir Heat Pump - Cycling - Elec reheat', which you can drag to the supply side of an empty air loop. That object is a composite system containing a Fan:OnOff, Coil:Cooling:WaterToAirHeatPump:EquationFit, Coil:Heating:WaterToAirHeatPumpEquationFit, Coil:Heating:WaterToAirHeatPump:EquationFit, and Coil:HeatingElectric. You can connect the coils to your ground source loop via the chain icons at the top, similar to how you would connect water coils.

You'll probably also want a OutdoorAirSystem on the air loop. loop.

You can model water to air DX coils on an air loop by using an AirLoopHVACUnitarySystem. In the Library menu, if you expand the 'Air Loop HVAC Unitary System' selection, at the bottom you'll see 'Unitary - WaterToAir Heat Pump - Cycling - Elec reheat', which you can drag to the supply side of an empty air loop. That object is a composite system containing a Fan:OnOff, Coil:Cooling:WaterToAirHeatPump:EquationFit, Coil:Heating:WaterToAirHeatPump:EquationFit, and Coil:HeatingElectric. Coil:Heating:Electric. You can connect the coils to your ground source loop via the chain icons at the top, similar to how you would connect water coils.

You'll probably also want a OutdoorAirSystem on the air loop.