[EnergyPlus_Support] Electric Chiller: air cooled

["Elmer Morrissey" <elmofuddly@xxxxxxxxx>]

Hello all,

I'm am getting the following error from an electric chiller (air 
cooled) which supplies the cool water at 7C for the cooling coil in 
the AHU...

ElectricChillerModel:Air Cooled Condenser Inlet Temperature below 0C 
continues

Can anyone point me where I would remove this error? 

My chiller definition looks like this

CHILLER:ELECTRIC,
    Z1:Plant1,               !- Chiller Name
    AIR COOLED,              !- Condenser Type
    autosize,                !- Nominal Capacity {W}
    3.2,                     !- COP
    Z1:Plant1In,             !- Plant_Side_Inlet_Node
    Z1:Plant1Out,            !- Plant_Side_Outlet_Node
    ZC1:Plant1In,            !- Condenser_Side_Inlet_Node
    ZC1:Plant1Out,           !- Condenser_Side_Outlet_Node
    0,                       !- Minimum Part Load Ratio
    1,                       !- Maximum Part Load Ratio
    0.65,                    !- Opt Part Load Ratio
    35,                      !- Temp Design Condenser Inlet {C}
    2.778,                   !- Temp Rise Coefficient
    6.67,                    !- Temp Design Evaporator Outlet {C}
    autosize,                !- Design Evaporator Volumetric Water 
Flow Rate {m3/s}
    autosize,                !- Design Condenser Volumetric Water 
Flow Rate {m3/s}
    0.9949,                  !- Coefficient1 of the capacity ratio 
curve
    -0.045954,               !- Coefficient2 of the capacity ratio 
curve
    -0.0013543,              !- Coefficient3 of the capacity ratio 
curve
    2.333,                   !- Coefficient1 of the power ratio curve
    -1.975,                  !- Coefficient2 of the power ratio curve
    0.6121,                  !- Coefficient3 of the power ratio curve
    0.03303,                 !- Coefficient1 of the full load ratio 
curve
    0.6852,                  !- Coefficient2 of the full load ratio 
curve
    0.2818,                  !- Coefficient3 of the full load ratio 
curve
    5,                       !- Temp Lower Limit Evaporator Outlet 
{C}
    ConstantFlow;            !- Chiller Flow Mode

I've attempted reducing the design inlet temperature into the 
condenser but it doesn't appear to be making a difference. Also the 
cooling coil is not reducing the temperature of the outlet air 
stream to the desired temp of 12C. It gets close (13C) but never 
quite down there at peak times.

I appreciate the help, kind regards

-Elmer






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