RE: [EnergyPlus_Support] AirLoopHVAC allowable componant types

The DX coil needs to be wrapped inside one of the Unitary objects so that it can be controlled. See AirloopHVAC:UnitaryCoolOnly or AirLoopHVAC:UnitaryHeatCool.

From: EnergyPlus_Support@xxxxxxxxxxxxxxx [mailto:EnergyPlus_Support@xxxxxxxxxxxxxxx] On Behalf Of jeannieboef
Sent: Wednesday, September 01, 2010 9:20 AM
To: EnergyPlus_Support@xxxxxxxxxxxxxxx
Subject: [EnergyPlus_Support] AirLoopHVAC allowable componant types

is there a list somewhere of all the componant types allowed in this loop? My error report says:
- no zone equipment allowed
- no Fan:OnOff allowed
- Fan:VariableVolume is allowed
- Coil:Heating:Water is allowed
- Coil:Cooling:Water is allowed
- Coil:Cooling:DX:SingleSpeed is not! this is a real problem

I'm trying to contruct a unitary type equipment (roof top, not zone) which uses a water heating coil (not gas) because i must use purchased hot water and a DX expansion. At the moment it looks like I have to use a unitary:furnace type and nullify the heating coil and then stick an additional water heating coil in the back!

The following did not work:

AirLoopHVAC,
118129 AHU, !- Name
, !- Controller List Name
118129 AHU Availability Managers, !- Availability Manager List Name
autosize, !- Primary air design volumetric flow rate {m3/s}
118129 AHU Branches, !- BranchList Name
, !- ConnectorList Name
118129 AHU Air Loop Inlet, !- Supply Side Inlet Node Name
118129 AHU Return Air Outlet, !- Demand Side Outlet Node Name
118129 AHU Supply Path Inlet, !- Demand Side Inlet Node Names
118129 AHU Air Loop Outlet; !- Supply Side Outlet Node Names

BranchList,
118129 AHU Branches, !- Name
118129 AHU Main Branch; !- Branch 1 Name

Branch,
118129 AHU Main Branch, !- Name
autosize, !- Maximum Branch Flow Rate {m3/s}
, !- Pressure Drop Curve Name
AirLoopHVAC:OutdoorAirSystem, !- Comp Type
118129 AHU OA System, !- Comp Name
118129 AHU Air Loop Inlet, !- Comp Inlet Node Name
118129 AHU Mixed Air Outlet, !- Comp Outlet Node Name
Passive, !- Comp Branch Control Type
Fan:OnOff, !- Comp Type
118129 AHU Supply Fan, !- Comp Name
118129 AHU Mixed Air Outlet, !- Fan Inlet Node !- Comp Inlet Node Name
118129 AHU Supply Fan Outlet, !- Fan Outlet Node Name !- Comp Outlet Node Name
Passive, !- Comp Branch Control Type
Coil:Cooling:DX:SingleSpeed, !- Cooling coil type !- Comp Type
118129 AHU Cooling Coil, !- Comp Name
118129 AHU Supply Fan Outlet, !- Cooling coil Inlet Node !- Comp Inlet Node Name
118129 AHU Cooling Coil Outlet, !- also Heating coil Inlet Node !- Comp Outlet Node Name
Passive, !- Comp Branch Control Type
Coil:Heating:Water, !- Heating coil type !- Comp Type
118129 AHU Heating Coil, !- Comp Name
118129 AHU Cooling Coil Outlet, !- also Heating coil Inlet Node !- Comp Inlet Node Name
118129 AHU Air Loop Outlet, !- Heating coil Outlet Node !- Comp Outlet Node Name !118129 AHU Air Loop Outlet
Active; !- Comp Branch Control Type

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