I'm attempting to model a ChillerHeater:Absorption:DirectFired and I get this error:
** Severe ** SimGasAbsorber: Invalid call to Gas Absorbtion Chiller-Heater GAHP
** ~~~ ** Node connections in branch are not consistent with object nodes.
** Fatal ** Preceding conditions cause termination.
...Summary of Errors that led to program termination:
..... Reference severe error count=1
..... Last severe error=SimGasAbsorber: Invalid call to Gas Absorbtion Chiller-Heater GAHP
Here is my ChillerHeater:Absorption:DirectFired object:
ChillerHeater:Absorption:DirectFired,
GAHP, !- Name
autosize, !- Nominal Cooling Capacity {W}
0.8, !- Heating to Cooling Capacity Ratio
0.97, !- Fuel Input to Cooling Output Ratio
1.25, !- Fuel Input to Heating Output Ratio
0.01, !- Electric Input to Cooling Output Ratio
, !- Electric Input to Heating Output Ratio
GAHP ChW Inlet, !- Chilled Water Inlet Node Name
GAHP ChW Outlet, !- Chilled Water Outlet Node Name
GAHP Cnd Inlet, !- Condenser Inlet Node Name
GAHP Cnd Outlet, !- Condenser Outlet Node Name
GAHP HW Inlet, !- Hot Water Inlet Node Name
GAHP HW Outlet, !- Hot Water Outlet Node Name
0.1, !- Minimum Part Load Ratio
1, !- Maximum Part Load Ratio
1, !- Optimum Part Load Ratio
29, !- Design Entering Condenser Water Temperature {C}
7, !- Design Leaving Chilled Water Temperature {C}
autosize, !- Design Chilled Water Flow Rate {m3/s}
autosize, !- Design Condenser Water Flow Rate {m3/s}
autosize, !- Design Hot Water Flow Rate {m3/s}
GasAbsFlatBiQuad, !- Cooling Capacity Function of Temperature Curve Name
GasAbsFlatBiQuad, !- Fuel Input to Cooling Output Ratio Function of Temperature Curve Name
GasAbsLinearQuad, !- Fuel Input to Cooling Output Ratio Function of Part Load Ratio Curve Name
GasAbsFlatBiQuad, !- Electric Input to Cooling Output Ratio Function of Temperature Curve Name
GasAbsFlatQuad, !- Electric Input to Cooling Output Ratio Function of Part Load Ratio Curve Name
GasAbsInvLinearQuad, !- Heating Capacity Function of Cooling Capacity Curve Name
GasAbsLinearQuad, !- Fuel Input to Heat Output Ratio During Heating Only Operation Curve Name
EnteringCondenser, !- Temperature Curve Input Variable
AirCooled, !- Condenser Type
2, !- Chilled Water Temperature Lower Limit {C}
, !- Fuel Higher Heating Value {kJ/kg}
NaturalGas, !- Fuel Type
1; !- Sizing Factor
I have double-checked all my nodes in other classes and they seem correct. Before I inserted the ChillerHeater, my model had an air-cooled chiller and 2 boilers and it ran fine. Now, the ChillerHeater replaced the chiller and the first of two boilers. The chilled water loop serves one dummy fan coil without any load. The heating hot water loop serves numerous heating hot water coils with load on them.
Please assist with any troubleshooting ideas. I'm using EnergyPlus 22.1.0 exclusively.